./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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 23:28:50,911 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:28:50,966 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:28:50,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:28:50,970 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:28:50,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:28:50,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:28:50,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:28:51,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:28:51,004 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:28:51,004 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:28:51,004 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:28:51,005 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:28:51,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:28:51,006 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:28:51,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:28:51,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:28:51,007 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:28:51,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:28:51,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:28:51,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:28:51,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:28:51,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:28:51,008 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:28:51,008 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:28:51,008 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:28:51,009 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:28:51,009 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:28:51,009 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:28:51,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:28:51,010 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:28:51,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:28:51,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:28:51,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:28:51,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:28:51,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:28:51,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:28:51,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:28:51,012 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:28:51,012 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:28:51,012 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:28:51,012 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:28:51,012 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:28:51,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:28:51,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:28:51,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:28:51,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:28:51,223 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:28:51,224 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:28:51,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-27 23:28:51,327 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:28:51,327 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:28:51,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 23:28:52,452 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:28:52,693 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:28:52,694 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 23:28:52,710 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def2bd12e/a1aab064ec1c4e7f9b4f87bce3695bc6/FLAG38518f92c [2024-06-27 23:28:52,723 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/def2bd12e/a1aab064ec1c4e7f9b4f87bce3695bc6 [2024-06-27 23:28:52,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:28:52,725 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:28:52,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:28:52,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:28:52,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:28:52,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:28:51" (1/2) ... [2024-06-27 23:28:52,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23893fdf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:28:52, skipping insertion in model container [2024-06-27 23:28:52,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:28:51" (1/2) ... [2024-06-27 23:28:52,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f53ab48 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:28:52, skipping insertion in model container [2024-06-27 23:28:52,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:28:52" (2/2) ... [2024-06-27 23:28:52,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23893fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:52, skipping insertion in model container [2024-06-27 23:28:52,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:28:52" (2/2) ... [2024-06-27 23:28:52,734 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:28:52,750 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:28:52,751 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:28:52,751 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p1_EBX) + (long long )y$mem_tmp >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$flush_delayed) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0_used >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff0_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$r_buff1_thd1) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )y$w_buff0) + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0_used >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0_used >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0_used >= 0LL) && (long long )x + (long long )y$r_buff0_thd1 >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff0_used >= 0LL) && (long long )y + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff0_used >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 + (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd1 + (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0_used >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0_used + (long long )y$w_buff1_used >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0_used >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd1 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0_used >= 0LL) && (1LL + (long long )y$w_buff0_used) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$mem_tmp >= 0LL) && (long long )y - (long long )y$mem_tmp >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd1 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 23:28:52,751 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:28:52,751 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-27 23:28:52,793 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:28:53,170 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:28:53,182 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:28:53,336 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:28:53,379 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:28:53,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53 WrapperNode [2024-06-27 23:28:53,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:28:53,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:28:53,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:28:53,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:28:53,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (1/1) ... [2024-06-27 23:28:53,413 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (1/1) ... [2024-06-27 23:28:53,463 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 113 [2024-06-27 23:28:53,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:28:53,464 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:28:53,464 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:28:53,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:28:53,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (1/1) ... [2024-06-27 23:28:53,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (1/1) ... [2024-06-27 23:28:53,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (1/1) ... [2024-06-27 23:28:53,511 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 23:28:53,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (1/1) ... [2024-06-27 23:28:53,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (1/1) ... [2024-06-27 23:28:53,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (1/1) ... [2024-06-27 23:28:53,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (1/1) ... [2024-06-27 23:28:53,536 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (1/1) ... [2024-06-27 23:28:53,542 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (1/1) ... [2024-06-27 23:28:53,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:28:53,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:28:53,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:28:53,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:28:53,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (1/1) ... [2024-06-27 23:28:53,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:28:53,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:28:53,585 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 23:28:53,604 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 23:28:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:28:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:28:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:28:53,619 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:28:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:28:53,620 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:28:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:28:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:28:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:28:53,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:28:53,621 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 23:28:53,707 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:28:53,709 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:28:54,111 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:28:54,111 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:28:54,238 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:28:54,239 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:28:54,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:28:54 BoogieIcfgContainer [2024-06-27 23:28:54,257 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:28:54,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:28:54,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:28:54,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:28:54,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:28:51" (1/4) ... [2024-06-27 23:28:54,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53238375 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:28:54, skipping insertion in model container [2024-06-27 23:28:54,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:28:52" (2/4) ... [2024-06-27 23:28:54,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53238375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:28:54, skipping insertion in model container [2024-06-27 23:28:54,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:28:53" (3/4) ... [2024-06-27 23:28:54,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53238375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:28:54, skipping insertion in model container [2024-06-27 23:28:54,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:28:54" (4/4) ... [2024-06-27 23:28:54,262 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 23:28:54,275 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:28:54,275 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 23:28:54,275 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:28:54,325 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:28:54,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 23:28:54,379 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-27 23:28:54,380 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:28:54,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:28:54,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 23:28:54,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-27 23:28:54,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:28:54,402 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;@4816d374, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:28:54,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 23:28:54,405 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:28:54,406 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:28:54,406 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:28:54,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:54,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:28:54,407 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 23:28:54,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:54,412 INFO L85 PathProgramCache]: Analyzing trace with hash 325944614, now seen corresponding path program 1 times [2024-06-27 23:28:54,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:54,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115821380] [2024-06-27 23:28:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:54,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:55,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:55,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:55,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115821380] [2024-06-27 23:28:55,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115821380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:55,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:55,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:28:55,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238815637] [2024-06-27 23:28:55,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:55,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:28:55,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:55,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:28:55,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:28:55,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:28:55,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:55,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:55,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:28:55,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:55,781 INFO L124 PetriNetUnfolderBase]: 162/306 cut-off events. [2024-06-27 23:28:55,781 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 23:28:55,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 306 events. 162/306 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1107 event pairs, 97 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 606. Up to 288 conditions per place. [2024-06-27 23:28:55,787 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-27 23:28:55,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 113 flow [2024-06-27 23:28:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:28:55,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:28:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-27 23:28:55,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-27 23:28:55,812 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 53 transitions. [2024-06-27 23:28:55,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 113 flow [2024-06-27 23:28:55,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:28:55,815 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-27 23:28:55,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-27 23:28:55,819 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-27 23:28:55,820 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-27 23:28:55,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:55,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:55,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:55,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:28:55,821 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 23:28:55,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:55,821 INFO L85 PathProgramCache]: Analyzing trace with hash -299804411, now seen corresponding path program 1 times [2024-06-27 23:28:55,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:55,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227697931] [2024-06-27 23:28:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:55,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:56,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:56,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227697931] [2024-06-27 23:28:56,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227697931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:56,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:56,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:28:56,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868146946] [2024-06-27 23:28:56,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:56,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:28:56,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:56,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:28:56,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:28:56,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 23:28:56,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:56,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:56,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 23:28:56,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:56,579 INFO L124 PetriNetUnfolderBase]: 159/303 cut-off events. [2024-06-27 23:28:56,579 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-27 23:28:56,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 303 events. 159/303 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1097 event pairs, 79 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 679. Up to 274 conditions per place. [2024-06-27 23:28:56,581 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 25 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-27 23:28:56,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 155 flow [2024-06-27 23:28:56,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:28:56,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:28:56,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-27 23:28:56,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-27 23:28:56,583 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 68 transitions. [2024-06-27 23:28:56,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 155 flow [2024-06-27 23:28:56,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:28:56,584 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-27 23:28:56,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-27 23:28:56,585 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-27 23:28:56,585 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-27 23:28:56,585 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 23:28:56,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:56,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:56,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:28:56,586 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 23:28:56,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:56,586 INFO L85 PathProgramCache]: Analyzing trace with hash -704001021, now seen corresponding path program 1 times [2024-06-27 23:28:56,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:56,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27789741] [2024-06-27 23:28:56,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:56,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:57,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:57,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:57,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27789741] [2024-06-27 23:28:57,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27789741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:57,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:57,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:28:57,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574563130] [2024-06-27 23:28:57,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:57,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:28:57,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:57,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:28:57,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:28:57,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 23:28:57,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:57,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:57,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 23:28:57,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:57,383 INFO L124 PetriNetUnfolderBase]: 187/338 cut-off events. [2024-06-27 23:28:57,384 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-06-27 23:28:57,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 338 events. 187/338 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1201 event pairs, 67 based on Foata normal form. 3/340 useless extension candidates. Maximal degree in co-relation 852. Up to 293 conditions per place. [2024-06-27 23:28:57,386 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 34 selfloop transitions, 11 changer transitions 0/48 dead transitions. [2024-06-27 23:28:57,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 48 transitions, 249 flow [2024-06-27 23:28:57,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:28:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:28:57,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-27 23:28:57,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-27 23:28:57,388 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 85 transitions. [2024-06-27 23:28:57,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 48 transitions, 249 flow [2024-06-27 23:28:57,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:28:57,389 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 160 flow [2024-06-27 23:28:57,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-06-27 23:28:57,390 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-27 23:28:57,390 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 160 flow [2024-06-27 23:28:57,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:57,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:57,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:57,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:28:57,391 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 23:28:57,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:57,391 INFO L85 PathProgramCache]: Analyzing trace with hash -210665862, now seen corresponding path program 1 times [2024-06-27 23:28:57,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:57,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002813827] [2024-06-27 23:28:57,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:57,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:58,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:58,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002813827] [2024-06-27 23:28:58,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002813827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:58,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:58,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:28:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755201501] [2024-06-27 23:28:58,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:58,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:28:58,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:58,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:28:58,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:28:58,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:28:58,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:58,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:58,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:28:58,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:58,660 INFO L124 PetriNetUnfolderBase]: 188/340 cut-off events. [2024-06-27 23:28:58,660 INFO L125 PetriNetUnfolderBase]: For 417/417 co-relation queries the response was YES. [2024-06-27 23:28:58,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 340 events. 188/340 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1187 event pairs, 46 based on Foata normal form. 3/342 useless extension candidates. Maximal degree in co-relation 1026. Up to 282 conditions per place. [2024-06-27 23:28:58,662 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 38 selfloop transitions, 15 changer transitions 0/55 dead transitions. [2024-06-27 23:28:58,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 336 flow [2024-06-27 23:28:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:28:58,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:28:58,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-06-27 23:28:58,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-27 23:28:58,665 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 160 flow. Second operand 7 states and 102 transitions. [2024-06-27 23:28:58,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 336 flow [2024-06-27 23:28:58,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 332 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 23:28:58,670 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 214 flow [2024-06-27 23:28:58,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-06-27 23:28:58,671 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-06-27 23:28:58,672 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 214 flow [2024-06-27 23:28:58,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:58,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:58,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:58,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:28:58,673 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:28:58,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:58,673 INFO L85 PathProgramCache]: Analyzing trace with hash 2059888706, now seen corresponding path program 1 times [2024-06-27 23:28:58,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:58,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738347588] [2024-06-27 23:28:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:58,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:59,761 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 23:28:59,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:59,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738347588] [2024-06-27 23:28:59,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738347588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:59,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:59,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:28:59,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082332920] [2024-06-27 23:28:59,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:59,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:28:59,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:28:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:28:59,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:28:59,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 214 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:59,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:59,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:28:59,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:00,036 INFO L124 PetriNetUnfolderBase]: 189/343 cut-off events. [2024-06-27 23:29:00,036 INFO L125 PetriNetUnfolderBase]: For 640/640 co-relation queries the response was YES. [2024-06-27 23:29:00,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 343 events. 189/343 cut-off events. For 640/640 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1210 event pairs, 24 based on Foata normal form. 6/348 useless extension candidates. Maximal degree in co-relation 1156. Up to 259 conditions per place. [2024-06-27 23:29:00,039 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 38 selfloop transitions, 17 changer transitions 0/57 dead transitions. [2024-06-27 23:29:00,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 57 transitions, 384 flow [2024-06-27 23:29:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:00,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:00,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-27 23:29:00,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-27 23:29:00,042 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 214 flow. Second operand 8 states and 111 transitions. [2024-06-27 23:29:00,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 57 transitions, 384 flow [2024-06-27 23:29:00,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 350 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:00,047 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 217 flow [2024-06-27 23:29:00,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-27 23:29:00,049 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-27 23:29:00,051 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 217 flow [2024-06-27 23:29:00,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:00,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:00,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:00,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:29:00,057 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:00,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:00,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1384917533, now seen corresponding path program 1 times [2024-06-27 23:29:00,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:00,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692282656] [2024-06-27 23:29:00,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:00,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:00,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:00,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692282656] [2024-06-27 23:29:00,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692282656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:00,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:00,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:29:00,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356822044] [2024-06-27 23:29:00,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:00,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:29:00,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:00,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:29:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:29:01,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:01,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:01,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:01,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:01,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:01,193 INFO L124 PetriNetUnfolderBase]: 187/340 cut-off events. [2024-06-27 23:29:01,193 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-27 23:29:01,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1225 conditions, 340 events. 187/340 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1190 event pairs, 47 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 1202. Up to 329 conditions per place. [2024-06-27 23:29:01,195 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-27 23:29:01,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 323 flow [2024-06-27 23:29:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:29:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:29:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-06-27 23:29:01,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:29:01,197 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 217 flow. Second operand 5 states and 60 transitions. [2024-06-27 23:29:01,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 323 flow [2024-06-27 23:29:01,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 278 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:01,199 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 214 flow [2024-06-27 23:29:01,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-06-27 23:29:01,199 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-27 23:29:01,199 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 214 flow [2024-06-27 23:29:01,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:01,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:01,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:01,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:29:01,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:01,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:01,200 INFO L85 PathProgramCache]: Analyzing trace with hash -17632073, now seen corresponding path program 1 times [2024-06-27 23:29:01,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:01,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147220629] [2024-06-27 23:29:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:01,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:02,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147220629] [2024-06-27 23:29:02,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147220629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:02,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:02,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:29:02,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161536074] [2024-06-27 23:29:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:02,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:29:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:02,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:29:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:29:02,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:02,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:02,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:02,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:02,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:02,705 INFO L124 PetriNetUnfolderBase]: 181/331 cut-off events. [2024-06-27 23:29:02,705 INFO L125 PetriNetUnfolderBase]: For 876/876 co-relation queries the response was YES. [2024-06-27 23:29:02,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 331 events. 181/331 cut-off events. For 876/876 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1147 event pairs, 44 based on Foata normal form. 3/333 useless extension candidates. Maximal degree in co-relation 1137. Up to 311 conditions per place. [2024-06-27 23:29:02,708 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 36 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-27 23:29:02,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 330 flow [2024-06-27 23:29:02,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:29:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:29:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-27 23:29:02,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-27 23:29:02,710 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 214 flow. Second operand 6 states and 71 transitions. [2024-06-27 23:29:02,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 330 flow [2024-06-27 23:29:02,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 321 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 23:29:02,713 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 244 flow [2024-06-27 23:29:02,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-06-27 23:29:02,714 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-27 23:29:02,714 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 244 flow [2024-06-27 23:29:02,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:02,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:02,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:02,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:29:02,714 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:02,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:02,715 INFO L85 PathProgramCache]: Analyzing trace with hash -912488294, now seen corresponding path program 1 times [2024-06-27 23:29:02,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:02,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121148328] [2024-06-27 23:29:02,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:02,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:03,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:03,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:03,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121148328] [2024-06-27 23:29:03,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121148328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:03,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:03,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:29:03,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900996550] [2024-06-27 23:29:03,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:03,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:29:03,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:03,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:29:03,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:29:03,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:03,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:03,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:03,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:03,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:03,752 INFO L124 PetriNetUnfolderBase]: 204/372 cut-off events. [2024-06-27 23:29:03,752 INFO L125 PetriNetUnfolderBase]: For 1135/1135 co-relation queries the response was YES. [2024-06-27 23:29:03,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 372 events. 204/372 cut-off events. For 1135/1135 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1326 event pairs, 49 based on Foata normal form. 2/373 useless extension candidates. Maximal degree in co-relation 1372. Up to 333 conditions per place. [2024-06-27 23:29:03,754 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 41 selfloop transitions, 15 changer transitions 0/58 dead transitions. [2024-06-27 23:29:03,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 449 flow [2024-06-27 23:29:03,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:29:03,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:29:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2024-06-27 23:29:03,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:29:03,758 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 244 flow. Second operand 6 states and 75 transitions. [2024-06-27 23:29:03,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 449 flow [2024-06-27 23:29:03,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 425 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:03,763 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 324 flow [2024-06-27 23:29:03,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-06-27 23:29:03,765 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-27 23:29:03,765 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 324 flow [2024-06-27 23:29:03,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:03,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:03,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:03,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:29:03,766 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:03,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash -534088964, now seen corresponding path program 2 times [2024-06-27 23:29:03,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:03,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607801561] [2024-06-27 23:29:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:03,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:03,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:04,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:04,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607801561] [2024-06-27 23:29:04,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607801561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:04,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:04,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:29:04,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738166573] [2024-06-27 23:29:04,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:04,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:29:04,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:04,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:29:04,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:29:04,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:04,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:04,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:04,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:04,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:04,701 INFO L124 PetriNetUnfolderBase]: 201/367 cut-off events. [2024-06-27 23:29:04,702 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2024-06-27 23:29:04,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 367 events. 201/367 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1313 event pairs, 48 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 1438. Up to 351 conditions per place. [2024-06-27 23:29:04,704 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 43 selfloop transitions, 10 changer transitions 0/55 dead transitions. [2024-06-27 23:29:04,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 452 flow [2024-06-27 23:29:04,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:29:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:29:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-27 23:29:04,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:29:04,706 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 324 flow. Second operand 6 states and 69 transitions. [2024-06-27 23:29:04,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 452 flow [2024-06-27 23:29:04,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 441 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 23:29:04,709 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 350 flow [2024-06-27 23:29:04,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 23:29:04,710 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-27 23:29:04,710 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 350 flow [2024-06-27 23:29:04,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:04,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:04,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:04,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:29:04,711 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:04,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:04,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1732430776, now seen corresponding path program 3 times [2024-06-27 23:29:04,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:04,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521498899] [2024-06-27 23:29:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:04,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:05,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:05,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521498899] [2024-06-27 23:29:05,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521498899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:05,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:05,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:29:05,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839015166] [2024-06-27 23:29:05,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:05,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:29:05,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:05,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:29:05,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:29:05,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:05,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 350 flow. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:05,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:05,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:05,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:06,062 INFO L124 PetriNetUnfolderBase]: 194/354 cut-off events. [2024-06-27 23:29:06,062 INFO L125 PetriNetUnfolderBase]: For 1608/1608 co-relation queries the response was YES. [2024-06-27 23:29:06,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 354 events. 194/354 cut-off events. For 1608/1608 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1245 event pairs, 44 based on Foata normal form. 2/355 useless extension candidates. Maximal degree in co-relation 1420. Up to 293 conditions per place. [2024-06-27 23:29:06,065 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 41 selfloop transitions, 19 changer transitions 0/62 dead transitions. [2024-06-27 23:29:06,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 515 flow [2024-06-27 23:29:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:29:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:29:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-06-27 23:29:06,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 23:29:06,067 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 350 flow. Second operand 6 states and 81 transitions. [2024-06-27 23:29:06,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 515 flow [2024-06-27 23:29:06,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 62 transitions, 494 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:06,070 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 399 flow [2024-06-27 23:29:06,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=399, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-06-27 23:29:06,071 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-27 23:29:06,071 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 399 flow [2024-06-27 23:29:06,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:06,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:06,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:06,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:29:06,072 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:06,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:06,072 INFO L85 PathProgramCache]: Analyzing trace with hash 268191758, now seen corresponding path program 1 times [2024-06-27 23:29:06,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:06,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590697060] [2024-06-27 23:29:06,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:06,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:07,007 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 23:29:07,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590697060] [2024-06-27 23:29:07,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590697060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:07,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:07,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:07,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598496090] [2024-06-27 23:29:07,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:07,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:07,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:07,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:07,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:07,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:07,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 399 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:07,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:07,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:07,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:07,255 INFO L124 PetriNetUnfolderBase]: 210/380 cut-off events. [2024-06-27 23:29:07,255 INFO L125 PetriNetUnfolderBase]: For 2114/2114 co-relation queries the response was YES. [2024-06-27 23:29:07,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1629 conditions, 380 events. 210/380 cut-off events. For 2114/2114 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1346 event pairs, 50 based on Foata normal form. 2/381 useless extension candidates. Maximal degree in co-relation 1596. Up to 319 conditions per place. [2024-06-27 23:29:07,258 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 48 selfloop transitions, 19 changer transitions 0/69 dead transitions. [2024-06-27 23:29:07,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 69 transitions, 615 flow [2024-06-27 23:29:07,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-27 23:29:07,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-27 23:29:07,259 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 399 flow. Second operand 7 states and 87 transitions. [2024-06-27 23:29:07,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 69 transitions, 615 flow [2024-06-27 23:29:07,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 555 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:07,263 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 427 flow [2024-06-27 23:29:07,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-27 23:29:07,264 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-27 23:29:07,264 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 427 flow [2024-06-27 23:29:07,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:07,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:07,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:07,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:29:07,265 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:07,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash 623349434, now seen corresponding path program 2 times [2024-06-27 23:29:07,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:07,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446147981] [2024-06-27 23:29:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:07,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:08,032 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 23:29:08,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:08,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446147981] [2024-06-27 23:29:08,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446147981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:08,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:08,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:08,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940714190] [2024-06-27 23:29:08,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:08,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:08,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:08,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:08,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:08,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:08,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 427 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:08,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:08,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:08,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:08,294 INFO L124 PetriNetUnfolderBase]: 213/385 cut-off events. [2024-06-27 23:29:08,295 INFO L125 PetriNetUnfolderBase]: For 2384/2384 co-relation queries the response was YES. [2024-06-27 23:29:08,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1710 conditions, 385 events. 213/385 cut-off events. For 2384/2384 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1372 event pairs, 48 based on Foata normal form. 1/385 useless extension candidates. Maximal degree in co-relation 1674. Up to 366 conditions per place. [2024-06-27 23:29:08,297 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 53 selfloop transitions, 12 changer transitions 0/67 dead transitions. [2024-06-27 23:29:08,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 67 transitions, 583 flow [2024-06-27 23:29:08,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:08,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 23:29:08,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-27 23:29:08,299 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 427 flow. Second operand 7 states and 78 transitions. [2024-06-27 23:29:08,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 67 transitions, 583 flow [2024-06-27 23:29:08,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 67 transitions, 569 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 23:29:08,305 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 458 flow [2024-06-27 23:29:08,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=458, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2024-06-27 23:29:08,305 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-27 23:29:08,306 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 458 flow [2024-06-27 23:29:08,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:08,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:08,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:08,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:29:08,306 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:08,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:08,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1782276572, now seen corresponding path program 3 times [2024-06-27 23:29:08,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:08,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998003860] [2024-06-27 23:29:08,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:08,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:09,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:09,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998003860] [2024-06-27 23:29:09,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998003860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:09,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:09,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:09,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359848146] [2024-06-27 23:29:09,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:09,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:09,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:09,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:09,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:09,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:09,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 458 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:09,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:09,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:09,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:09,394 INFO L124 PetriNetUnfolderBase]: 211/382 cut-off events. [2024-06-27 23:29:09,395 INFO L125 PetriNetUnfolderBase]: For 2776/2776 co-relation queries the response was YES. [2024-06-27 23:29:09,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 382 events. 211/382 cut-off events. For 2776/2776 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1365 event pairs, 48 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1720. Up to 357 conditions per place. [2024-06-27 23:29:09,397 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 52 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-06-27 23:29:09,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 69 transitions, 622 flow [2024-06-27 23:29:09,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-27 23:29:09,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-27 23:29:09,399 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 458 flow. Second operand 7 states and 80 transitions. [2024-06-27 23:29:09,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 69 transitions, 622 flow [2024-06-27 23:29:09,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 593 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:09,403 INFO L231 Difference]: Finished difference. Result has 71 places, 63 transitions, 484 flow [2024-06-27 23:29:09,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=71, PETRI_TRANSITIONS=63} [2024-06-27 23:29:09,404 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-27 23:29:09,404 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 63 transitions, 484 flow [2024-06-27 23:29:09,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:09,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:09,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:09,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:29:09,405 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:09,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:09,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1630515718, now seen corresponding path program 4 times [2024-06-27 23:29:09,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:09,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787979058] [2024-06-27 23:29:09,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:09,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:10,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787979058] [2024-06-27 23:29:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787979058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:10,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:10,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:10,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947362464] [2024-06-27 23:29:10,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:10,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:10,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:10,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:10,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:10,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 63 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:10,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:10,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:10,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:10,914 INFO L124 PetriNetUnfolderBase]: 212/384 cut-off events. [2024-06-27 23:29:10,914 INFO L125 PetriNetUnfolderBase]: For 3218/3218 co-relation queries the response was YES. [2024-06-27 23:29:10,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807 conditions, 384 events. 212/384 cut-off events. For 3218/3218 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1382 event pairs, 44 based on Foata normal form. 2/385 useless extension candidates. Maximal degree in co-relation 1767. Up to 286 conditions per place. [2024-06-27 23:29:10,917 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 52 selfloop transitions, 27 changer transitions 0/81 dead transitions. [2024-06-27 23:29:10,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 81 transitions, 763 flow [2024-06-27 23:29:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-27 23:29:10,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-27 23:29:10,918 INFO L175 Difference]: Start difference. First operand has 71 places, 63 transitions, 484 flow. Second operand 7 states and 96 transitions. [2024-06-27 23:29:10,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 81 transitions, 763 flow [2024-06-27 23:29:10,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 726 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:10,923 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 545 flow [2024-06-27 23:29:10,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-06-27 23:29:10,923 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-27 23:29:10,924 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 545 flow [2024-06-27 23:29:10,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:10,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:10,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:10,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:29:10,924 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:10,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash -279717821, now seen corresponding path program 1 times [2024-06-27 23:29:10,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:10,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227502989] [2024-06-27 23:29:10,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:10,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:12,137 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 23:29:12,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:12,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227502989] [2024-06-27 23:29:12,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227502989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:12,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:12,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:12,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341302976] [2024-06-27 23:29:12,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:12,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:12,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:12,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:12,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:12,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:12,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 545 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:12,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:12,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:12,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:12,380 INFO L124 PetriNetUnfolderBase]: 227/409 cut-off events. [2024-06-27 23:29:12,380 INFO L125 PetriNetUnfolderBase]: For 3839/3839 co-relation queries the response was YES. [2024-06-27 23:29:12,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2013 conditions, 409 events. 227/409 cut-off events. For 3839/3839 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1512 event pairs, 53 based on Foata normal form. 1/409 useless extension candidates. Maximal degree in co-relation 1973. Up to 357 conditions per place. [2024-06-27 23:29:12,383 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 64 selfloop transitions, 19 changer transitions 0/85 dead transitions. [2024-06-27 23:29:12,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 85 transitions, 808 flow [2024-06-27 23:29:12,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:12,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-27 23:29:12,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-27 23:29:12,385 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 545 flow. Second operand 7 states and 85 transitions. [2024-06-27 23:29:12,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 85 transitions, 808 flow [2024-06-27 23:29:12,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 85 transitions, 748 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:12,389 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 583 flow [2024-06-27 23:29:12,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=583, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-06-27 23:29:12,390 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2024-06-27 23:29:12,390 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 583 flow [2024-06-27 23:29:12,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:12,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:12,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:12,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:29:12,391 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:12,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:12,391 INFO L85 PathProgramCache]: Analyzing trace with hash -279714101, now seen corresponding path program 2 times [2024-06-27 23:29:12,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:12,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834548092] [2024-06-27 23:29:12,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:12,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:13,549 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 23:29:13,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:13,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834548092] [2024-06-27 23:29:13,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834548092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:13,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:13,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:13,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955206770] [2024-06-27 23:29:13,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:13,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:13,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:13,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:13,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:13,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:13,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 583 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:13,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:13,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:13,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:13,815 INFO L124 PetriNetUnfolderBase]: 225/406 cut-off events. [2024-06-27 23:29:13,816 INFO L125 PetriNetUnfolderBase]: For 4162/4162 co-relation queries the response was YES. [2024-06-27 23:29:13,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 406 events. 225/406 cut-off events. For 4162/4162 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1493 event pairs, 53 based on Foata normal form. 1/406 useless extension candidates. Maximal degree in co-relation 1991. Up to 366 conditions per place. [2024-06-27 23:29:13,819 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 64 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-06-27 23:29:13,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 770 flow [2024-06-27 23:29:13,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:13,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:13,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-27 23:29:13,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-27 23:29:13,820 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 583 flow. Second operand 7 states and 83 transitions. [2024-06-27 23:29:13,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 770 flow [2024-06-27 23:29:13,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 742 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 23:29:13,827 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 594 flow [2024-06-27 23:29:13,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=594, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2024-06-27 23:29:13,827 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-27 23:29:13,828 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 594 flow [2024-06-27 23:29:13,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:13,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:13,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:13,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:29:13,830 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:13,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash -871611946, now seen corresponding path program 1 times [2024-06-27 23:29:13,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:13,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554763759] [2024-06-27 23:29:13,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:13,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:14,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:14,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:14,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554763759] [2024-06-27 23:29:14,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554763759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:14,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:14,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:14,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355916795] [2024-06-27 23:29:14,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:14,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:14,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:14,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:14,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:14,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:14,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 594 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:14,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:14,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:14,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:15,098 INFO L124 PetriNetUnfolderBase]: 228/411 cut-off events. [2024-06-27 23:29:15,098 INFO L125 PetriNetUnfolderBase]: For 4660/4660 co-relation queries the response was YES. [2024-06-27 23:29:15,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2107 conditions, 411 events. 228/411 cut-off events. For 4660/4660 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1521 event pairs, 54 based on Foata normal form. 1/411 useless extension candidates. Maximal degree in co-relation 2062. Up to 348 conditions per place. [2024-06-27 23:29:15,101 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 62 selfloop transitions, 23 changer transitions 0/87 dead transitions. [2024-06-27 23:29:15,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 87 transitions, 839 flow [2024-06-27 23:29:15,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:15,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 23:29:15,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:29:15,102 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 594 flow. Second operand 8 states and 96 transitions. [2024-06-27 23:29:15,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 87 transitions, 839 flow [2024-06-27 23:29:15,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 87 transitions, 804 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:15,109 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 624 flow [2024-06-27 23:29:15,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=624, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2024-06-27 23:29:15,109 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-06-27 23:29:15,110 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 624 flow [2024-06-27 23:29:15,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:15,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:15,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:15,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:29:15,110 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:15,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:15,111 INFO L85 PathProgramCache]: Analyzing trace with hash -727890631, now seen corresponding path program 1 times [2024-06-27 23:29:15,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:15,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566879276] [2024-06-27 23:29:15,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:15,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:16,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:16,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566879276] [2024-06-27 23:29:16,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566879276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:16,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:16,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:16,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302214143] [2024-06-27 23:29:16,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:16,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:16,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:16,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:16,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:16,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:16,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 624 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:16,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:16,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:16,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:16,650 INFO L124 PetriNetUnfolderBase]: 260/463 cut-off events. [2024-06-27 23:29:16,650 INFO L125 PetriNetUnfolderBase]: For 6189/6189 co-relation queries the response was YES. [2024-06-27 23:29:16,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 463 events. 260/463 cut-off events. For 6189/6189 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1748 event pairs, 57 based on Foata normal form. 4/466 useless extension candidates. Maximal degree in co-relation 2372. Up to 350 conditions per place. [2024-06-27 23:29:16,653 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 70 selfloop transitions, 25 changer transitions 0/97 dead transitions. [2024-06-27 23:29:16,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 97 transitions, 941 flow [2024-06-27 23:29:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:16,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 23:29:16,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-27 23:29:16,655 INFO L175 Difference]: Start difference. First operand has 84 places, 77 transitions, 624 flow. Second operand 8 states and 101 transitions. [2024-06-27 23:29:16,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 97 transitions, 941 flow [2024-06-27 23:29:16,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 97 transitions, 889 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:16,662 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 692 flow [2024-06-27 23:29:16,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=692, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2024-06-27 23:29:16,663 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-27 23:29:16,663 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 692 flow [2024-06-27 23:29:16,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:16,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:16,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:16,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:29:16,664 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:16,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:16,664 INFO L85 PathProgramCache]: Analyzing trace with hash 220150634, now seen corresponding path program 2 times [2024-06-27 23:29:16,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:16,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657946018] [2024-06-27 23:29:16,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:16,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:16,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:17,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:17,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657946018] [2024-06-27 23:29:17,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657946018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:17,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:17,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:17,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797319543] [2024-06-27 23:29:17,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:17,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:17,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:17,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:17,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:17,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:17,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 692 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:17,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:17,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:17,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:17,715 INFO L124 PetriNetUnfolderBase]: 263/468 cut-off events. [2024-06-27 23:29:17,715 INFO L125 PetriNetUnfolderBase]: For 6309/6309 co-relation queries the response was YES. [2024-06-27 23:29:17,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 468 events. 263/468 cut-off events. For 6309/6309 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1770 event pairs, 57 based on Foata normal form. 1/468 useless extension candidates. Maximal degree in co-relation 2534. Up to 404 conditions per place. [2024-06-27 23:29:17,718 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 66 selfloop transitions, 28 changer transitions 0/96 dead transitions. [2024-06-27 23:29:17,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 96 transitions, 963 flow [2024-06-27 23:29:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 23:29:17,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-27 23:29:17,720 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 692 flow. Second operand 7 states and 88 transitions. [2024-06-27 23:29:17,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 96 transitions, 963 flow [2024-06-27 23:29:17,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 96 transitions, 931 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 23:29:17,728 INFO L231 Difference]: Finished difference. Result has 92 places, 87 transitions, 761 flow [2024-06-27 23:29:17,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=761, PETRI_PLACES=92, PETRI_TRANSITIONS=87} [2024-06-27 23:29:17,728 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-27 23:29:17,729 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 87 transitions, 761 flow [2024-06-27 23:29:17,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:17,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:17,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:17,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:29:17,729 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:17,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1964415251, now seen corresponding path program 2 times [2024-06-27 23:29:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:17,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960786158] [2024-06-27 23:29:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:18,798 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 23:29:18,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:18,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960786158] [2024-06-27 23:29:18,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960786158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:18,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:18,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:18,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354104864] [2024-06-27 23:29:18,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:18,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:18,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:18,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:18,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:18,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:18,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 87 transitions, 761 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:18,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:18,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:18,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:19,109 INFO L124 PetriNetUnfolderBase]: 274/486 cut-off events. [2024-06-27 23:29:19,110 INFO L125 PetriNetUnfolderBase]: For 7640/7640 co-relation queries the response was YES. [2024-06-27 23:29:19,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2782 conditions, 486 events. 274/486 cut-off events. For 7640/7640 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1856 event pairs, 52 based on Foata normal form. 2/487 useless extension candidates. Maximal degree in co-relation 2729. Up to 448 conditions per place. [2024-06-27 23:29:19,113 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 78 selfloop transitions, 20 changer transitions 0/100 dead transitions. [2024-06-27 23:29:19,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 100 transitions, 1059 flow [2024-06-27 23:29:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 23:29:19,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:29:19,115 INFO L175 Difference]: Start difference. First operand has 92 places, 87 transitions, 761 flow. Second operand 9 states and 99 transitions. [2024-06-27 23:29:19,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 100 transitions, 1059 flow [2024-06-27 23:29:19,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 100 transitions, 1028 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 23:29:19,127 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 832 flow [2024-06-27 23:29:19,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=832, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2024-06-27 23:29:19,128 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-27 23:29:19,128 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 832 flow [2024-06-27 23:29:19,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:19,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:19,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:19,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:29:19,130 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:19,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:19,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1297696410, now seen corresponding path program 3 times [2024-06-27 23:29:19,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:19,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667234021] [2024-06-27 23:29:19,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:19,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:20,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:20,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667234021] [2024-06-27 23:29:20,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667234021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:20,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:20,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:20,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911015183] [2024-06-27 23:29:20,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:20,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:20,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:20,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:20,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:20,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:20,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 832 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:20,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:20,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:20,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:20,532 INFO L124 PetriNetUnfolderBase]: 288/509 cut-off events. [2024-06-27 23:29:20,532 INFO L125 PetriNetUnfolderBase]: For 8823/8823 co-relation queries the response was YES. [2024-06-27 23:29:20,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3021 conditions, 509 events. 288/509 cut-off events. For 8823/8823 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1974 event pairs, 54 based on Foata normal form. 3/511 useless extension candidates. Maximal degree in co-relation 2966. Up to 456 conditions per place. [2024-06-27 23:29:20,536 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 86 selfloop transitions, 20 changer transitions 0/108 dead transitions. [2024-06-27 23:29:20,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 108 transitions, 1180 flow [2024-06-27 23:29:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:20,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 23:29:20,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:29:20,557 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 832 flow. Second operand 8 states and 96 transitions. [2024-06-27 23:29:20,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 108 transitions, 1180 flow [2024-06-27 23:29:20,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 108 transitions, 1139 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:20,571 INFO L231 Difference]: Finished difference. Result has 103 places, 96 transitions, 904 flow [2024-06-27 23:29:20,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=904, PETRI_PLACES=103, PETRI_TRANSITIONS=96} [2024-06-27 23:29:20,571 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2024-06-27 23:29:20,571 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 96 transitions, 904 flow [2024-06-27 23:29:20,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:20,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:20,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:20,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:29:20,572 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:20,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:20,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1290077633, now seen corresponding path program 3 times [2024-06-27 23:29:20,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:20,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963528182] [2024-06-27 23:29:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:20,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:21,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:21,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963528182] [2024-06-27 23:29:21,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963528182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:21,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:21,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:21,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744761857] [2024-06-27 23:29:21,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:21,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:21,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:21,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:21,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:21,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 96 transitions, 904 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:21,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:21,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:21,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:21,927 INFO L124 PetriNetUnfolderBase]: 287/508 cut-off events. [2024-06-27 23:29:21,927 INFO L125 PetriNetUnfolderBase]: For 9574/9574 co-relation queries the response was YES. [2024-06-27 23:29:21,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 508 events. 287/508 cut-off events. For 9574/9574 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1969 event pairs, 54 based on Foata normal form. 3/510 useless extension candidates. Maximal degree in co-relation 3013. Up to 477 conditions per place. [2024-06-27 23:29:21,931 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 87 selfloop transitions, 18 changer transitions 0/107 dead transitions. [2024-06-27 23:29:21,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 107 transitions, 1168 flow [2024-06-27 23:29:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:29:21,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:29:21,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 23:29:21,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3433333333333333 [2024-06-27 23:29:21,933 INFO L175 Difference]: Start difference. First operand has 103 places, 96 transitions, 904 flow. Second operand 10 states and 103 transitions. [2024-06-27 23:29:21,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 107 transitions, 1168 flow [2024-06-27 23:29:21,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 107 transitions, 1134 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:21,946 INFO L231 Difference]: Finished difference. Result has 109 places, 99 transitions, 956 flow [2024-06-27 23:29:21,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=956, PETRI_PLACES=109, PETRI_TRANSITIONS=99} [2024-06-27 23:29:21,946 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2024-06-27 23:29:21,946 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 99 transitions, 956 flow [2024-06-27 23:29:21,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:21,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:21,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:21,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:29:21,947 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:21,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:21,947 INFO L85 PathProgramCache]: Analyzing trace with hash 475570626, now seen corresponding path program 4 times [2024-06-27 23:29:21,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:21,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689623963] [2024-06-27 23:29:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:21,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:22,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:22,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689623963] [2024-06-27 23:29:22,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689623963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:22,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:22,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:22,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109755325] [2024-06-27 23:29:22,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:22,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:22,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:22,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:22,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:22,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:22,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 99 transitions, 956 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:22,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:22,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:22,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:23,119 INFO L124 PetriNetUnfolderBase]: 285/505 cut-off events. [2024-06-27 23:29:23,120 INFO L125 PetriNetUnfolderBase]: For 9613/9613 co-relation queries the response was YES. [2024-06-27 23:29:23,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 505 events. 285/505 cut-off events. For 9613/9613 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1954 event pairs, 56 based on Foata normal form. 1/505 useless extension candidates. Maximal degree in co-relation 3061. Up to 483 conditions per place. [2024-06-27 23:29:23,123 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 91 selfloop transitions, 14 changer transitions 0/107 dead transitions. [2024-06-27 23:29:23,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 107 transitions, 1191 flow [2024-06-27 23:29:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 23:29:23,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 23:29:23,125 INFO L175 Difference]: Start difference. First operand has 109 places, 99 transitions, 956 flow. Second operand 8 states and 87 transitions. [2024-06-27 23:29:23,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 107 transitions, 1191 flow [2024-06-27 23:29:23,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 107 transitions, 1098 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 23:29:23,139 INFO L231 Difference]: Finished difference. Result has 108 places, 100 transitions, 907 flow [2024-06-27 23:29:23,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=907, PETRI_PLACES=108, PETRI_TRANSITIONS=100} [2024-06-27 23:29:23,139 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2024-06-27 23:29:23,139 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 100 transitions, 907 flow [2024-06-27 23:29:23,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:23,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:23,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:23,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:29:23,140 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:23,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:23,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1290344543, now seen corresponding path program 4 times [2024-06-27 23:29:23,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:23,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717070116] [2024-06-27 23:29:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:23,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:24,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:24,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717070116] [2024-06-27 23:29:24,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717070116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:24,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:24,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:24,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071342374] [2024-06-27 23:29:24,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:24,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:24,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:24,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:24,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:24,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:24,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 100 transitions, 907 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:24,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:24,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:24,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:24,547 INFO L124 PetriNetUnfolderBase]: 281/499 cut-off events. [2024-06-27 23:29:24,547 INFO L125 PetriNetUnfolderBase]: For 9972/9972 co-relation queries the response was YES. [2024-06-27 23:29:24,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2992 conditions, 499 events. 281/499 cut-off events. For 9972/9972 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1941 event pairs, 55 based on Foata normal form. 2/500 useless extension candidates. Maximal degree in co-relation 2936. Up to 465 conditions per place. [2024-06-27 23:29:24,550 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 89 selfloop transitions, 18 changer transitions 0/109 dead transitions. [2024-06-27 23:29:24,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 109 transitions, 1149 flow [2024-06-27 23:29:24,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:24,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:24,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 23:29:24,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-27 23:29:24,552 INFO L175 Difference]: Start difference. First operand has 108 places, 100 transitions, 907 flow. Second operand 9 states and 97 transitions. [2024-06-27 23:29:24,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 109 transitions, 1149 flow [2024-06-27 23:29:24,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 109 transitions, 1106 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:24,567 INFO L231 Difference]: Finished difference. Result has 112 places, 101 transitions, 920 flow [2024-06-27 23:29:24,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=920, PETRI_PLACES=112, PETRI_TRANSITIONS=101} [2024-06-27 23:29:24,568 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-27 23:29:24,568 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 101 transitions, 920 flow [2024-06-27 23:29:24,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:24,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:24,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:24,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:29:24,568 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:24,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:24,569 INFO L85 PathProgramCache]: Analyzing trace with hash -86951907, now seen corresponding path program 3 times [2024-06-27 23:29:24,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:24,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864264835] [2024-06-27 23:29:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:24,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:25,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:25,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864264835] [2024-06-27 23:29:25,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864264835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:25,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:25,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:25,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153315919] [2024-06-27 23:29:25,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:25,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:25,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:25,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:25,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:29:25,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 101 transitions, 920 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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 23:29:25,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:25,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:29:25,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:26,053 INFO L124 PetriNetUnfolderBase]: 284/504 cut-off events. [2024-06-27 23:29:26,053 INFO L125 PetriNetUnfolderBase]: For 10388/10388 co-relation queries the response was YES. [2024-06-27 23:29:26,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3049 conditions, 504 events. 284/504 cut-off events. For 10388/10388 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1968 event pairs, 46 based on Foata normal form. 1/504 useless extension candidates. Maximal degree in co-relation 2991. Up to 410 conditions per place. [2024-06-27 23:29:26,064 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 86 selfloop transitions, 29 changer transitions 0/117 dead transitions. [2024-06-27 23:29:26,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 117 transitions, 1264 flow [2024-06-27 23:29:26,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:29:26,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:29:26,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-27 23:29:26,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-27 23:29:26,065 INFO L175 Difference]: Start difference. First operand has 112 places, 101 transitions, 920 flow. Second operand 6 states and 88 transitions. [2024-06-27 23:29:26,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 117 transitions, 1264 flow [2024-06-27 23:29:26,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 117 transitions, 1225 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:26,082 INFO L231 Difference]: Finished difference. Result has 111 places, 105 transitions, 983 flow [2024-06-27 23:29:26,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=983, PETRI_PLACES=111, PETRI_TRANSITIONS=105} [2024-06-27 23:29:26,082 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-27 23:29:26,082 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 105 transitions, 983 flow [2024-06-27 23:29:26,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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 23:29:26,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:26,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:26,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:29:26,083 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:26,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash -74839587, now seen corresponding path program 4 times [2024-06-27 23:29:26,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:26,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986718601] [2024-06-27 23:29:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:26,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:27,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:27,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:27,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986718601] [2024-06-27 23:29:27,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986718601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:27,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:27,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:27,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425082725] [2024-06-27 23:29:27,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:27,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:27,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:27,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:27,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:27,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:29:27,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 105 transitions, 983 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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 23:29:27,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:27,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:29:27,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:27,342 INFO L124 PetriNetUnfolderBase]: 282/501 cut-off events. [2024-06-27 23:29:27,342 INFO L125 PetriNetUnfolderBase]: For 10945/10945 co-relation queries the response was YES. [2024-06-27 23:29:27,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3103 conditions, 501 events. 282/501 cut-off events. For 10945/10945 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1959 event pairs, 44 based on Foata normal form. 1/501 useless extension candidates. Maximal degree in co-relation 3045. Up to 434 conditions per place. [2024-06-27 23:29:27,346 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 86 selfloop transitions, 25 changer transitions 0/113 dead transitions. [2024-06-27 23:29:27,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 113 transitions, 1225 flow [2024-06-27 23:29:27,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:29:27,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:29:27,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-06-27 23:29:27,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 23:29:27,347 INFO L175 Difference]: Start difference. First operand has 111 places, 105 transitions, 983 flow. Second operand 6 states and 84 transitions. [2024-06-27 23:29:27,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 113 transitions, 1225 flow [2024-06-27 23:29:27,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 1186 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 23:29:27,364 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 1002 flow [2024-06-27 23:29:27,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1002, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2024-06-27 23:29:27,364 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-06-27 23:29:27,365 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 1002 flow [2024-06-27 23:29:27,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 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 23:29:27,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:27,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:27,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:29:27,365 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:27,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:27,366 INFO L85 PathProgramCache]: Analyzing trace with hash 620935682, now seen corresponding path program 5 times [2024-06-27 23:29:27,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:27,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698773371] [2024-06-27 23:29:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:27,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:28,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:28,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:28,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698773371] [2024-06-27 23:29:28,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698773371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:28,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:28,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:28,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779349982] [2024-06-27 23:29:28,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:28,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:28,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:28,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:28,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:28,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:28,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 1002 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:28,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:28,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:28,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:29,175 INFO L124 PetriNetUnfolderBase]: 285/506 cut-off events. [2024-06-27 23:29:29,176 INFO L125 PetriNetUnfolderBase]: For 10907/10907 co-relation queries the response was YES. [2024-06-27 23:29:29,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3143 conditions, 506 events. 285/506 cut-off events. For 10907/10907 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1975 event pairs, 43 based on Foata normal form. 1/506 useless extension candidates. Maximal degree in co-relation 3084. Up to 405 conditions per place. [2024-06-27 23:29:29,181 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 83 selfloop transitions, 35 changer transitions 0/120 dead transitions. [2024-06-27 23:29:29,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 1337 flow [2024-06-27 23:29:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-27 23:29:29,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:29:29,182 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 1002 flow. Second operand 8 states and 104 transitions. [2024-06-27 23:29:29,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 1337 flow [2024-06-27 23:29:29,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 120 transitions, 1267 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:29,196 INFO L231 Difference]: Finished difference. Result has 116 places, 107 transitions, 1019 flow [2024-06-27 23:29:29,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1019, PETRI_PLACES=116, PETRI_TRANSITIONS=107} [2024-06-27 23:29:29,197 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-06-27 23:29:29,197 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 107 transitions, 1019 flow [2024-06-27 23:29:29,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:29,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:29,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:29,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:29:29,198 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:29,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:29,198 INFO L85 PathProgramCache]: Analyzing trace with hash 981109089, now seen corresponding path program 5 times [2024-06-27 23:29:29,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:29,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103938691] [2024-06-27 23:29:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:29,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:30,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:30,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103938691] [2024-06-27 23:29:30,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103938691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:30,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:30,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:30,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336796237] [2024-06-27 23:29:30,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:30,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:30,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:30,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:30,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:30,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:30,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 107 transitions, 1019 flow. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:30,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:30,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:30,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:30,740 INFO L124 PetriNetUnfolderBase]: 292/518 cut-off events. [2024-06-27 23:29:30,741 INFO L125 PetriNetUnfolderBase]: For 11664/11664 co-relation queries the response was YES. [2024-06-27 23:29:30,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3165 conditions, 518 events. 292/518 cut-off events. For 11664/11664 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2035 event pairs, 47 based on Foata normal form. 4/521 useless extension candidates. Maximal degree in co-relation 3106. Up to 321 conditions per place. [2024-06-27 23:29:30,744 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 85 selfloop transitions, 42 changer transitions 0/129 dead transitions. [2024-06-27 23:29:30,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 129 transitions, 1486 flow [2024-06-27 23:29:30,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:30,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:30,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:29:30,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-27 23:29:30,745 INFO L175 Difference]: Start difference. First operand has 116 places, 107 transitions, 1019 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:29:30,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 129 transitions, 1486 flow [2024-06-27 23:29:30,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 129 transitions, 1414 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:30,762 INFO L231 Difference]: Finished difference. Result has 119 places, 112 transitions, 1097 flow [2024-06-27 23:29:30,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1097, PETRI_PLACES=119, PETRI_TRANSITIONS=112} [2024-06-27 23:29:30,766 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-06-27 23:29:30,766 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 112 transitions, 1097 flow [2024-06-27 23:29:30,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:30,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:30,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:30,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:29:30,767 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:30,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:30,768 INFO L85 PathProgramCache]: Analyzing trace with hash 993874982, now seen corresponding path program 6 times [2024-06-27 23:29:30,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:30,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036401260] [2024-06-27 23:29:30,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:30,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:31,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:31,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036401260] [2024-06-27 23:29:31,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036401260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:31,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:31,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:29:31,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923887785] [2024-06-27 23:29:31,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:31,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:29:31,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:31,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:29:31,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:29:31,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:31,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 112 transitions, 1097 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:31,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:31,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:31,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:32,288 INFO L124 PetriNetUnfolderBase]: 294/522 cut-off events. [2024-06-27 23:29:32,289 INFO L125 PetriNetUnfolderBase]: For 11031/11031 co-relation queries the response was YES. [2024-06-27 23:29:32,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3265 conditions, 522 events. 294/522 cut-off events. For 11031/11031 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2058 event pairs, 47 based on Foata normal form. 1/522 useless extension candidates. Maximal degree in co-relation 3204. Up to 418 conditions per place. [2024-06-27 23:29:32,292 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 88 selfloop transitions, 36 changer transitions 0/126 dead transitions. [2024-06-27 23:29:32,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 126 transitions, 1407 flow [2024-06-27 23:29:32,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:29:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:29:32,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-06-27 23:29:32,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-27 23:29:32,294 INFO L175 Difference]: Start difference. First operand has 119 places, 112 transitions, 1097 flow. Second operand 7 states and 95 transitions. [2024-06-27 23:29:32,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 126 transitions, 1407 flow [2024-06-27 23:29:32,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 126 transitions, 1329 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:32,313 INFO L231 Difference]: Finished difference. Result has 123 places, 115 transitions, 1149 flow [2024-06-27 23:29:32,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1149, PETRI_PLACES=123, PETRI_TRANSITIONS=115} [2024-06-27 23:29:32,315 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-27 23:29:32,316 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 115 transitions, 1149 flow [2024-06-27 23:29:32,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:32,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:32,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:32,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:29:32,316 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:32,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:32,317 INFO L85 PathProgramCache]: Analyzing trace with hash 2144241115, now seen corresponding path program 1 times [2024-06-27 23:29:32,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:32,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399364810] [2024-06-27 23:29:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:32,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:33,874 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 23:29:33,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:33,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399364810] [2024-06-27 23:29:33,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399364810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:33,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:33,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:33,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487541344] [2024-06-27 23:29:33,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:33,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:33,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:33,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:33,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:33,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:33,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 115 transitions, 1149 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 23:29:33,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:33,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:33,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:34,285 INFO L124 PetriNetUnfolderBase]: 291/517 cut-off events. [2024-06-27 23:29:34,300 INFO L125 PetriNetUnfolderBase]: For 11609/11609 co-relation queries the response was YES. [2024-06-27 23:29:34,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3254 conditions, 517 events. 291/517 cut-off events. For 11609/11609 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2043 event pairs, 58 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 3190. Up to 489 conditions per place. [2024-06-27 23:29:34,304 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 107 selfloop transitions, 14 changer transitions 0/123 dead transitions. [2024-06-27 23:29:34,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 123 transitions, 1409 flow [2024-06-27 23:29:34,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:34,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-27 23:29:34,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-27 23:29:34,305 INFO L175 Difference]: Start difference. First operand has 123 places, 115 transitions, 1149 flow. Second operand 9 states and 93 transitions. [2024-06-27 23:29:34,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 123 transitions, 1409 flow [2024-06-27 23:29:34,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 123 transitions, 1344 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:34,357 INFO L231 Difference]: Finished difference. Result has 128 places, 115 transitions, 1116 flow [2024-06-27 23:29:34,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1116, PETRI_PLACES=128, PETRI_TRANSITIONS=115} [2024-06-27 23:29:34,358 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-27 23:29:34,358 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 115 transitions, 1116 flow [2024-06-27 23:29:34,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 23:29:34,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:34,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:34,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:29:34,359 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:34,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:34,359 INFO L85 PathProgramCache]: Analyzing trace with hash -84058639, now seen corresponding path program 1 times [2024-06-27 23:29:34,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:34,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690133851] [2024-06-27 23:29:34,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:34,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:35,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:35,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690133851] [2024-06-27 23:29:35,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690133851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:35,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:35,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:35,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320911973] [2024-06-27 23:29:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:35,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:35,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:35,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:35,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:35,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:35,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 115 transitions, 1116 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:35,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:35,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:35,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:36,029 INFO L124 PetriNetUnfolderBase]: 311/558 cut-off events. [2024-06-27 23:29:36,029 INFO L125 PetriNetUnfolderBase]: For 13071/13071 co-relation queries the response was YES. [2024-06-27 23:29:36,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 558 events. 311/558 cut-off events. For 13071/13071 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2294 event pairs, 64 based on Foata normal form. 2/559 useless extension candidates. Maximal degree in co-relation 3356. Up to 471 conditions per place. [2024-06-27 23:29:36,033 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 108 selfloop transitions, 22 changer transitions 0/132 dead transitions. [2024-06-27 23:29:36,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 132 transitions, 1494 flow [2024-06-27 23:29:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:36,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:36,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 23:29:36,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-27 23:29:36,034 INFO L175 Difference]: Start difference. First operand has 128 places, 115 transitions, 1116 flow. Second operand 9 states and 102 transitions. [2024-06-27 23:29:36,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 132 transitions, 1494 flow [2024-06-27 23:29:36,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 132 transitions, 1457 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:29:36,087 INFO L231 Difference]: Finished difference. Result has 130 places, 119 transitions, 1167 flow [2024-06-27 23:29:36,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1167, PETRI_PLACES=130, PETRI_TRANSITIONS=119} [2024-06-27 23:29:36,087 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2024-06-27 23:29:36,087 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 119 transitions, 1167 flow [2024-06-27 23:29:36,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:36,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:36,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:36,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:29:36,088 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:36,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:36,089 INFO L85 PathProgramCache]: Analyzing trace with hash -83998065, now seen corresponding path program 1 times [2024-06-27 23:29:36,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:36,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881119720] [2024-06-27 23:29:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:36,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:37,306 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 23:29:37,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:37,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881119720] [2024-06-27 23:29:37,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881119720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:37,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:37,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906157662] [2024-06-27 23:29:37,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:37,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:37,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:37,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:37,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:37,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 119 transitions, 1167 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 23:29:37,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:37,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:37,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:37,627 INFO L124 PetriNetUnfolderBase]: 319/571 cut-off events. [2024-06-27 23:29:37,627 INFO L125 PetriNetUnfolderBase]: For 13908/13908 co-relation queries the response was YES. [2024-06-27 23:29:37,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3566 conditions, 571 events. 319/571 cut-off events. For 13908/13908 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2375 event pairs, 69 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 3499. Up to 473 conditions per place. [2024-06-27 23:29:37,648 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 100 selfloop transitions, 31 changer transitions 0/133 dead transitions. [2024-06-27 23:29:37,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 133 transitions, 1533 flow [2024-06-27 23:29:37,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-27 23:29:37,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-27 23:29:37,650 INFO L175 Difference]: Start difference. First operand has 130 places, 119 transitions, 1167 flow. Second operand 8 states and 97 transitions. [2024-06-27 23:29:37,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 133 transitions, 1533 flow [2024-06-27 23:29:37,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 133 transitions, 1497 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:37,678 INFO L231 Difference]: Finished difference. Result has 133 places, 123 transitions, 1222 flow [2024-06-27 23:29:37,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1222, PETRI_PLACES=133, PETRI_TRANSITIONS=123} [2024-06-27 23:29:37,678 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 104 predicate places. [2024-06-27 23:29:37,678 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 123 transitions, 1222 flow [2024-06-27 23:29:37,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 23:29:37,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:37,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:37,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:29:37,679 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:37,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash -83998189, now seen corresponding path program 2 times [2024-06-27 23:29:37,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:37,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786680356] [2024-06-27 23:29:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:37,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:39,047 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 23:29:39,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:39,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786680356] [2024-06-27 23:29:39,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786680356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:39,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:39,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:39,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189517818] [2024-06-27 23:29:39,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:39,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:39,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:39,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:39,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:39,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:39,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 123 transitions, 1222 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:39,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:39,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:39,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:39,386 INFO L124 PetriNetUnfolderBase]: 323/579 cut-off events. [2024-06-27 23:29:39,386 INFO L125 PetriNetUnfolderBase]: For 15392/15392 co-relation queries the response was YES. [2024-06-27 23:29:39,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3684 conditions, 579 events. 323/579 cut-off events. For 15392/15392 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2416 event pairs, 68 based on Foata normal form. 2/580 useless extension candidates. Maximal degree in co-relation 3615. Up to 521 conditions per place. [2024-06-27 23:29:39,390 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 112 selfloop transitions, 20 changer transitions 0/134 dead transitions. [2024-06-27 23:29:39,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 134 transitions, 1521 flow [2024-06-27 23:29:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 23:29:39,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:29:39,401 INFO L175 Difference]: Start difference. First operand has 133 places, 123 transitions, 1222 flow. Second operand 9 states and 99 transitions. [2024-06-27 23:29:39,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 134 transitions, 1521 flow [2024-06-27 23:29:39,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 134 transitions, 1483 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 23:29:39,428 INFO L231 Difference]: Finished difference. Result has 138 places, 124 transitions, 1239 flow [2024-06-27 23:29:39,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1184, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1239, PETRI_PLACES=138, PETRI_TRANSITIONS=124} [2024-06-27 23:29:39,428 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2024-06-27 23:29:39,428 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 124 transitions, 1239 flow [2024-06-27 23:29:39,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:39,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:39,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:39,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:29:39,429 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:39,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:39,430 INFO L85 PathProgramCache]: Analyzing trace with hash -81196905, now seen corresponding path program 2 times [2024-06-27 23:29:39,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:39,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070607350] [2024-06-27 23:29:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:39,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:40,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:40,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:40,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070607350] [2024-06-27 23:29:40,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070607350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:40,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:40,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:40,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280005995] [2024-06-27 23:29:40,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:40,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:40,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:40,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:40,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:40,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:40,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 124 transitions, 1239 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 23:29:40,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:40,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:40,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:40,942 INFO L124 PetriNetUnfolderBase]: 331/592 cut-off events. [2024-06-27 23:29:40,943 INFO L125 PetriNetUnfolderBase]: For 16313/16313 co-relation queries the response was YES. [2024-06-27 23:29:40,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 592 events. 331/592 cut-off events. For 16313/16313 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2495 event pairs, 70 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 3767. Up to 514 conditions per place. [2024-06-27 23:29:40,947 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 102 selfloop transitions, 33 changer transitions 0/137 dead transitions. [2024-06-27 23:29:40,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 137 transitions, 1622 flow [2024-06-27 23:29:40,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 23:29:40,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-27 23:29:40,949 INFO L175 Difference]: Start difference. First operand has 138 places, 124 transitions, 1239 flow. Second operand 8 states and 98 transitions. [2024-06-27 23:29:40,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 137 transitions, 1622 flow [2024-06-27 23:29:40,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 137 transitions, 1580 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:40,978 INFO L231 Difference]: Finished difference. Result has 140 places, 128 transitions, 1327 flow [2024-06-27 23:29:40,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1327, PETRI_PLACES=140, PETRI_TRANSITIONS=128} [2024-06-27 23:29:40,978 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2024-06-27 23:29:40,978 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 128 transitions, 1327 flow [2024-06-27 23:29:40,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 23:29:40,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:40,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:40,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:29:40,979 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:40,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash -81201555, now seen corresponding path program 3 times [2024-06-27 23:29:40,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:40,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543456442] [2024-06-27 23:29:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:40,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:42,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:42,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543456442] [2024-06-27 23:29:42,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543456442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:42,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:42,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:42,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558478803] [2024-06-27 23:29:42,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:42,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:42,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:42,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:42,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:42,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:42,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 128 transitions, 1327 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:42,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:42,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:42,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:42,526 INFO L124 PetriNetUnfolderBase]: 334/597 cut-off events. [2024-06-27 23:29:42,526 INFO L125 PetriNetUnfolderBase]: For 17465/17465 co-relation queries the response was YES. [2024-06-27 23:29:42,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3993 conditions, 597 events. 334/597 cut-off events. For 17465/17465 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2515 event pairs, 69 based on Foata normal form. 1/597 useless extension candidates. Maximal degree in co-relation 3920. Up to 523 conditions per place. [2024-06-27 23:29:42,530 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 104 selfloop transitions, 32 changer transitions 0/138 dead transitions. [2024-06-27 23:29:42,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 138 transitions, 1635 flow [2024-06-27 23:29:42,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 23:29:42,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-27 23:29:42,532 INFO L175 Difference]: Start difference. First operand has 140 places, 128 transitions, 1327 flow. Second operand 9 states and 102 transitions. [2024-06-27 23:29:42,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 138 transitions, 1635 flow [2024-06-27 23:29:42,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 138 transitions, 1586 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:42,564 INFO L231 Difference]: Finished difference. Result has 144 places, 130 transitions, 1367 flow [2024-06-27 23:29:42,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1367, PETRI_PLACES=144, PETRI_TRANSITIONS=130} [2024-06-27 23:29:42,565 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 115 predicate places. [2024-06-27 23:29:42,565 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 130 transitions, 1367 flow [2024-06-27 23:29:42,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:42,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:42,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:42,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:29:42,565 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:42,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:42,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1205247903, now seen corresponding path program 3 times [2024-06-27 23:29:42,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:42,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74629708] [2024-06-27 23:29:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:42,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:43,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:43,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74629708] [2024-06-27 23:29:43,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74629708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:43,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:43,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:43,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553806384] [2024-06-27 23:29:43,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:43,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:43,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:43,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:43,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:43,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:43,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 130 transitions, 1367 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:43,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:43,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:43,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:44,216 INFO L124 PetriNetUnfolderBase]: 331/592 cut-off events. [2024-06-27 23:29:44,217 INFO L125 PetriNetUnfolderBase]: For 17974/17974 co-relation queries the response was YES. [2024-06-27 23:29:44,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3921 conditions, 592 events. 331/592 cut-off events. For 17974/17974 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2500 event pairs, 67 based on Foata normal form. 2/593 useless extension candidates. Maximal degree in co-relation 3847. Up to 545 conditions per place. [2024-06-27 23:29:44,220 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 119 selfloop transitions, 18 changer transitions 0/139 dead transitions. [2024-06-27 23:29:44,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 139 transitions, 1663 flow [2024-06-27 23:29:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 23:29:44,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-06-27 23:29:44,222 INFO L175 Difference]: Start difference. First operand has 144 places, 130 transitions, 1367 flow. Second operand 9 states and 98 transitions. [2024-06-27 23:29:44,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 139 transitions, 1663 flow [2024-06-27 23:29:44,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 139 transitions, 1592 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:44,255 INFO L231 Difference]: Finished difference. Result has 146 places, 130 transitions, 1336 flow [2024-06-27 23:29:44,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1336, PETRI_PLACES=146, PETRI_TRANSITIONS=130} [2024-06-27 23:29:44,256 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 117 predicate places. [2024-06-27 23:29:44,256 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 130 transitions, 1336 flow [2024-06-27 23:29:44,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:44,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:44,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:44,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:29:44,256 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:44,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:44,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1089956609, now seen corresponding path program 4 times [2024-06-27 23:29:44,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:44,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617813391] [2024-06-27 23:29:44,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:44,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:45,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:45,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617813391] [2024-06-27 23:29:45,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617813391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:45,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:45,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:45,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036591882] [2024-06-27 23:29:45,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:45,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:45,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:45,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:45,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:45,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 130 transitions, 1336 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 23:29:45,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:45,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:45,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:45,771 INFO L124 PetriNetUnfolderBase]: 334/597 cut-off events. [2024-06-27 23:29:45,772 INFO L125 PetriNetUnfolderBase]: For 18303/18303 co-relation queries the response was YES. [2024-06-27 23:29:45,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3944 conditions, 597 events. 334/597 cut-off events. For 18303/18303 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2515 event pairs, 68 based on Foata normal form. 1/597 useless extension candidates. Maximal degree in co-relation 3869. Up to 511 conditions per place. [2024-06-27 23:29:45,776 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 105 selfloop transitions, 36 changer transitions 0/143 dead transitions. [2024-06-27 23:29:45,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 143 transitions, 1736 flow [2024-06-27 23:29:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 23:29:45,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 23:29:45,777 INFO L175 Difference]: Start difference. First operand has 146 places, 130 transitions, 1336 flow. Second operand 8 states and 100 transitions. [2024-06-27 23:29:45,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 143 transitions, 1736 flow [2024-06-27 23:29:45,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 143 transitions, 1698 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:45,813 INFO L231 Difference]: Finished difference. Result has 147 places, 132 transitions, 1395 flow [2024-06-27 23:29:45,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1395, PETRI_PLACES=147, PETRI_TRANSITIONS=132} [2024-06-27 23:29:45,813 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2024-06-27 23:29:45,813 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 132 transitions, 1395 flow [2024-06-27 23:29:45,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 23:29:45,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:45,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:45,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:29:45,814 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:45,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:45,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1089778979, now seen corresponding path program 5 times [2024-06-27 23:29:45,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:45,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594916946] [2024-06-27 23:29:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:45,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:47,032 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 23:29:47,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:47,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594916946] [2024-06-27 23:29:47,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594916946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:47,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:47,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:47,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31075330] [2024-06-27 23:29:47,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:47,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:47,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:47,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:47,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:47,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:47,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 132 transitions, 1395 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:47,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:47,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:47,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:47,377 INFO L124 PetriNetUnfolderBase]: 337/602 cut-off events. [2024-06-27 23:29:47,377 INFO L125 PetriNetUnfolderBase]: For 19297/19297 co-relation queries the response was YES. [2024-06-27 23:29:47,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4041 conditions, 602 events. 337/602 cut-off events. For 19297/19297 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2551 event pairs, 70 based on Foata normal form. 1/602 useless extension candidates. Maximal degree in co-relation 3965. Up to 534 conditions per place. [2024-06-27 23:29:47,382 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 112 selfloop transitions, 29 changer transitions 0/143 dead transitions. [2024-06-27 23:29:47,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 143 transitions, 1723 flow [2024-06-27 23:29:47,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:47,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 23:29:47,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-27 23:29:47,385 INFO L175 Difference]: Start difference. First operand has 147 places, 132 transitions, 1395 flow. Second operand 9 states and 104 transitions. [2024-06-27 23:29:47,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 143 transitions, 1723 flow [2024-06-27 23:29:47,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 143 transitions, 1630 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:47,428 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 1393 flow [2024-06-27 23:29:47,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1393, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2024-06-27 23:29:47,428 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2024-06-27 23:29:47,428 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 1393 flow [2024-06-27 23:29:47,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:47,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:47,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:47,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:29:47,429 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:47,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:47,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1089772283, now seen corresponding path program 1 times [2024-06-27 23:29:47,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:47,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037881955] [2024-06-27 23:29:47,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:47,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:48,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:48,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037881955] [2024-06-27 23:29:48,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037881955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:48,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:48,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:48,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714893966] [2024-06-27 23:29:48,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:48,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:48,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:48,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:48,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:48,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:48,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 1393 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:48,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:48,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:48,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:49,352 INFO L124 PetriNetUnfolderBase]: 353/628 cut-off events. [2024-06-27 23:29:49,353 INFO L125 PetriNetUnfolderBase]: For 22436/22436 co-relation queries the response was YES. [2024-06-27 23:29:49,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4268 conditions, 628 events. 353/628 cut-off events. For 22436/22436 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2699 event pairs, 70 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 4191. Up to 479 conditions per place. [2024-06-27 23:29:49,357 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 115 selfloop transitions, 38 changer transitions 0/155 dead transitions. [2024-06-27 23:29:49,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 155 transitions, 1949 flow [2024-06-27 23:29:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:29:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:29:49,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 23:29:49,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38055555555555554 [2024-06-27 23:29:49,371 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 1393 flow. Second operand 12 states and 137 transitions. [2024-06-27 23:29:49,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 155 transitions, 1949 flow [2024-06-27 23:29:49,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 155 transitions, 1882 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:49,417 INFO L231 Difference]: Finished difference. Result has 155 places, 138 transitions, 1459 flow [2024-06-27 23:29:49,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1326, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1459, PETRI_PLACES=155, PETRI_TRANSITIONS=138} [2024-06-27 23:29:49,419 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-06-27 23:29:49,419 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 138 transitions, 1459 flow [2024-06-27 23:29:49,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:49,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:49,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:49,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:29:49,420 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:49,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1089951959, now seen corresponding path program 6 times [2024-06-27 23:29:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:49,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667260154] [2024-06-27 23:29:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:49,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:50,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:50,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667260154] [2024-06-27 23:29:50,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667260154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:50,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:50,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:50,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860741194] [2024-06-27 23:29:50,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:50,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:50,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:50,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:50,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:50,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:50,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 138 transitions, 1459 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 23:29:50,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:50,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:50,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:50,741 INFO L124 PetriNetUnfolderBase]: 356/633 cut-off events. [2024-06-27 23:29:50,741 INFO L125 PetriNetUnfolderBase]: For 23083/23083 co-relation queries the response was YES. [2024-06-27 23:29:50,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 633 events. 356/633 cut-off events. For 23083/23083 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2727 event pairs, 71 based on Foata normal form. 1/633 useless extension candidates. Maximal degree in co-relation 4286. Up to 565 conditions per place. [2024-06-27 23:29:50,745 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 115 selfloop transitions, 32 changer transitions 0/149 dead transitions. [2024-06-27 23:29:50,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 149 transitions, 1801 flow [2024-06-27 23:29:50,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:29:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:29:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 23:29:50,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:29:50,746 INFO L175 Difference]: Start difference. First operand has 155 places, 138 transitions, 1459 flow. Second operand 8 states and 96 transitions. [2024-06-27 23:29:50,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 149 transitions, 1801 flow [2024-06-27 23:29:50,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 149 transitions, 1704 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 23:29:50,794 INFO L231 Difference]: Finished difference. Result has 154 places, 140 transitions, 1459 flow [2024-06-27 23:29:50,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1459, PETRI_PLACES=154, PETRI_TRANSITIONS=140} [2024-06-27 23:29:50,795 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2024-06-27 23:29:50,795 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 140 transitions, 1459 flow [2024-06-27 23:29:50,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 23:29:50,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:50,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:50,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:29:50,795 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:50,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:50,796 INFO L85 PathProgramCache]: Analyzing trace with hash 34094451, now seen corresponding path program 2 times [2024-06-27 23:29:50,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:50,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414715355] [2024-06-27 23:29:50,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:50,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:51,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:51,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414715355] [2024-06-27 23:29:51,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414715355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:51,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:51,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:51,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405414455] [2024-06-27 23:29:51,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:51,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:51,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:51,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:51,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:51,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:51,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 140 transitions, 1459 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 23:29:51,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:51,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:51,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:52,256 INFO L124 PetriNetUnfolderBase]: 362/643 cut-off events. [2024-06-27 23:29:52,257 INFO L125 PetriNetUnfolderBase]: For 24751/24751 co-relation queries the response was YES. [2024-06-27 23:29:52,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4396 conditions, 643 events. 362/643 cut-off events. For 24751/24751 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2790 event pairs, 67 based on Foata normal form. 2/644 useless extension candidates. Maximal degree in co-relation 4317. Up to 490 conditions per place. [2024-06-27 23:29:52,261 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 107 selfloop transitions, 46 changer transitions 0/155 dead transitions. [2024-06-27 23:29:52,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 155 transitions, 1911 flow [2024-06-27 23:29:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 23:29:52,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-27 23:29:52,262 INFO L175 Difference]: Start difference. First operand has 154 places, 140 transitions, 1459 flow. Second operand 9 states and 109 transitions. [2024-06-27 23:29:52,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 155 transitions, 1911 flow [2024-06-27 23:29:52,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 155 transitions, 1834 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:52,310 INFO L231 Difference]: Finished difference. Result has 157 places, 142 transitions, 1505 flow [2024-06-27 23:29:52,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1505, PETRI_PLACES=157, PETRI_TRANSITIONS=142} [2024-06-27 23:29:52,311 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 128 predicate places. [2024-06-27 23:29:52,311 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 142 transitions, 1505 flow [2024-06-27 23:29:52,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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 23:29:52,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:52,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:52,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:29:52,312 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:52,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:52,312 INFO L85 PathProgramCache]: Analyzing trace with hash 34267431, now seen corresponding path program 3 times [2024-06-27 23:29:52,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:52,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734559703] [2024-06-27 23:29:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:52,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:53,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:53,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734559703] [2024-06-27 23:29:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734559703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:53,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:53,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:53,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590076891] [2024-06-27 23:29:53,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:53,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:53,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:53,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:53,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:53,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 142 transitions, 1505 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:53,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:53,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:53,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:53,938 INFO L124 PetriNetUnfolderBase]: 358/637 cut-off events. [2024-06-27 23:29:53,938 INFO L125 PetriNetUnfolderBase]: For 24560/24560 co-relation queries the response was YES. [2024-06-27 23:29:53,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4364 conditions, 637 events. 358/637 cut-off events. For 24560/24560 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2761 event pairs, 71 based on Foata normal form. 2/638 useless extension candidates. Maximal degree in co-relation 4284. Up to 487 conditions per place. [2024-06-27 23:29:53,943 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 115 selfloop transitions, 39 changer transitions 0/156 dead transitions. [2024-06-27 23:29:53,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 156 transitions, 1939 flow [2024-06-27 23:29:53,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:29:53,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:29:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:29:53,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-27 23:29:53,944 INFO L175 Difference]: Start difference. First operand has 157 places, 142 transitions, 1505 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:29:53,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 156 transitions, 1939 flow [2024-06-27 23:29:53,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 156 transitions, 1854 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:53,995 INFO L231 Difference]: Finished difference. Result has 161 places, 142 transitions, 1503 flow [2024-06-27 23:29:53,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1503, PETRI_PLACES=161, PETRI_TRANSITIONS=142} [2024-06-27 23:29:53,995 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 132 predicate places. [2024-06-27 23:29:53,995 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 142 transitions, 1503 flow [2024-06-27 23:29:53,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:53,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:53,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:53,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:29:53,996 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:53,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:53,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1868299821, now seen corresponding path program 7 times [2024-06-27 23:29:53,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:53,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657724293] [2024-06-27 23:29:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:53,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:55,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657724293] [2024-06-27 23:29:55,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657724293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:55,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:55,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:55,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88749870] [2024-06-27 23:29:55,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:55,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:55,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:55,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:55,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:55,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:55,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 142 transitions, 1503 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:55,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:55,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:55,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:55,528 INFO L124 PetriNetUnfolderBase]: 361/641 cut-off events. [2024-06-27 23:29:55,528 INFO L125 PetriNetUnfolderBase]: For 24925/24925 co-relation queries the response was YES. [2024-06-27 23:29:55,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4416 conditions, 641 events. 361/641 cut-off events. For 24925/24925 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2762 event pairs, 70 based on Foata normal form. 1/641 useless extension candidates. Maximal degree in co-relation 4335. Up to 604 conditions per place. [2024-06-27 23:29:55,533 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 128 selfloop transitions, 22 changer transitions 0/152 dead transitions. [2024-06-27 23:29:55,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 152 transitions, 1849 flow [2024-06-27 23:29:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:29:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:29:55,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 23:29:55,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-27 23:29:55,534 INFO L175 Difference]: Start difference. First operand has 161 places, 142 transitions, 1503 flow. Second operand 10 states and 106 transitions. [2024-06-27 23:29:55,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 152 transitions, 1849 flow [2024-06-27 23:29:55,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 152 transitions, 1771 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 23:29:55,586 INFO L231 Difference]: Finished difference. Result has 162 places, 144 transitions, 1506 flow [2024-06-27 23:29:55,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1506, PETRI_PLACES=162, PETRI_TRANSITIONS=144} [2024-06-27 23:29:55,587 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2024-06-27 23:29:55,587 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 144 transitions, 1506 flow [2024-06-27 23:29:55,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:55,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:55,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:55,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:29:55,588 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:55,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:55,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1559746201, now seen corresponding path program 4 times [2024-06-27 23:29:55,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:55,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127981761] [2024-06-27 23:29:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:55,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:56,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:56,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127981761] [2024-06-27 23:29:56,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127981761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:56,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:56,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:56,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011458523] [2024-06-27 23:29:56,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:56,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:56,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:56,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:56,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:56,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:56,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 144 transitions, 1506 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:56,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:56,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:56,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:57,151 INFO L124 PetriNetUnfolderBase]: 372/659 cut-off events. [2024-06-27 23:29:57,151 INFO L125 PetriNetUnfolderBase]: For 27734/27734 co-relation queries the response was YES. [2024-06-27 23:29:57,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4549 conditions, 659 events. 372/659 cut-off events. For 27734/27734 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2861 event pairs, 68 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4467. Up to 594 conditions per place. [2024-06-27 23:29:57,156 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 134 selfloop transitions, 24 changer transitions 0/160 dead transitions. [2024-06-27 23:29:57,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 160 transitions, 2076 flow [2024-06-27 23:29:57,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:29:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:29:57,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:29:57,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-27 23:29:57,157 INFO L175 Difference]: Start difference. First operand has 162 places, 144 transitions, 1506 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:29:57,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 160 transitions, 2076 flow [2024-06-27 23:29:57,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 160 transitions, 2001 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 23:29:57,246 INFO L231 Difference]: Finished difference. Result has 164 places, 148 transitions, 1540 flow [2024-06-27 23:29:57,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1540, PETRI_PLACES=164, PETRI_TRANSITIONS=148} [2024-06-27 23:29:57,246 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-06-27 23:29:57,247 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 148 transitions, 1540 flow [2024-06-27 23:29:57,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:57,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:57,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:57,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:29:57,247 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:57,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:57,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1857788347, now seen corresponding path program 8 times [2024-06-27 23:29:57,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:57,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429187131] [2024-06-27 23:29:57,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:58,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:58,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429187131] [2024-06-27 23:29:58,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429187131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:58,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:58,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:58,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470439730] [2024-06-27 23:29:58,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:58,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:58,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:58,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:58,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 148 transitions, 1540 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:58,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:58,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:58,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:58,621 INFO L124 PetriNetUnfolderBase]: 370/656 cut-off events. [2024-06-27 23:29:58,621 INFO L125 PetriNetUnfolderBase]: For 27270/27270 co-relation queries the response was YES. [2024-06-27 23:29:58,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4512 conditions, 656 events. 370/656 cut-off events. For 27270/27270 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2852 event pairs, 70 based on Foata normal form. 1/656 useless extension candidates. Maximal degree in co-relation 4429. Up to 631 conditions per place. [2024-06-27 23:29:58,626 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 138 selfloop transitions, 16 changer transitions 0/156 dead transitions. [2024-06-27 23:29:58,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 156 transitions, 1866 flow [2024-06-27 23:29:58,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:29:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:29:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 23:29:58,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-27 23:29:58,630 INFO L175 Difference]: Start difference. First operand has 164 places, 148 transitions, 1540 flow. Second operand 9 states and 96 transitions. [2024-06-27 23:29:58,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 156 transitions, 1866 flow [2024-06-27 23:29:58,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 156 transitions, 1781 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:58,688 INFO L231 Difference]: Finished difference. Result has 166 places, 148 transitions, 1492 flow [2024-06-27 23:29:58,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1492, PETRI_PLACES=166, PETRI_TRANSITIONS=148} [2024-06-27 23:29:58,691 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 137 predicate places. [2024-06-27 23:29:58,691 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 148 transitions, 1492 flow [2024-06-27 23:29:58,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:58,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:58,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:58,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:29:58,692 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:29:58,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:58,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1345980881, now seen corresponding path program 5 times [2024-06-27 23:29:58,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:58,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873790983] [2024-06-27 23:29:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:58,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:59,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:59,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:59,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873790983] [2024-06-27 23:29:59,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873790983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:59,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:59,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:29:59,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852875582] [2024-06-27 23:29:59,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:59,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:29:59,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:59,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:29:59,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:29:59,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:29:59,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 148 transitions, 1492 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:59,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:59,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:29:59,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:00,214 INFO L124 PetriNetUnfolderBase]: 366/650 cut-off events. [2024-06-27 23:30:00,215 INFO L125 PetriNetUnfolderBase]: For 27236/27236 co-relation queries the response was YES. [2024-06-27 23:30:00,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4358 conditions, 650 events. 366/650 cut-off events. For 27236/27236 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2827 event pairs, 67 based on Foata normal form. 2/651 useless extension candidates. Maximal degree in co-relation 4274. Up to 588 conditions per place. [2024-06-27 23:30:00,218 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 132 selfloop transitions, 26 changer transitions 0/160 dead transitions. [2024-06-27 23:30:00,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 160 transitions, 1932 flow [2024-06-27 23:30:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:00,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 23:30:00,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-06-27 23:30:00,240 INFO L175 Difference]: Start difference. First operand has 166 places, 148 transitions, 1492 flow. Second operand 10 states and 109 transitions. [2024-06-27 23:30:00,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 160 transitions, 1932 flow [2024-06-27 23:30:00,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 160 transitions, 1879 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:00,314 INFO L231 Difference]: Finished difference. Result has 169 places, 148 transitions, 1496 flow [2024-06-27 23:30:00,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1496, PETRI_PLACES=169, PETRI_TRANSITIONS=148} [2024-06-27 23:30:00,314 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-27 23:30:00,314 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 148 transitions, 1496 flow [2024-06-27 23:30:00,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:00,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:00,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:00,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:30:00,315 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 23:30:00,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1858025683, now seen corresponding path program 6 times [2024-06-27 23:30:00,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:00,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8092281] [2024-06-27 23:30:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:00,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:01,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:01,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8092281] [2024-06-27 23:30:01,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8092281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:01,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:01,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:01,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210364297] [2024-06-27 23:30:01,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:01,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:01,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:01,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:01,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:01,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:01,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 148 transitions, 1496 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:01,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:01,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:01,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:01,783 INFO L124 PetriNetUnfolderBase]: 362/644 cut-off events. [2024-06-27 23:30:01,783 INFO L125 PetriNetUnfolderBase]: For 26576/26576 co-relation queries the response was YES. [2024-06-27 23:30:01,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4280 conditions, 644 events. 362/644 cut-off events. For 26576/26576 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2795 event pairs, 69 based on Foata normal form. 2/645 useless extension candidates. Maximal degree in co-relation 4195. Up to 610 conditions per place. [2024-06-27 23:30:01,788 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 135 selfloop transitions, 21 changer transitions 0/158 dead transitions. [2024-06-27 23:30:01,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 158 transitions, 1846 flow [2024-06-27 23:30:01,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:01,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 23:30:01,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:30:01,791 INFO L175 Difference]: Start difference. First operand has 169 places, 148 transitions, 1496 flow. Second operand 10 states and 105 transitions. [2024-06-27 23:30:01,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 158 transitions, 1846 flow [2024-06-27 23:30:01,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 158 transitions, 1756 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:30:01,848 INFO L231 Difference]: Finished difference. Result has 169 places, 150 transitions, 1480 flow [2024-06-27 23:30:01,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1480, PETRI_PLACES=169, PETRI_TRANSITIONS=150} [2024-06-27 23:30:01,848 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-27 23:30:01,848 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 150 transitions, 1480 flow [2024-06-27 23:30:01,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:01,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:01,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:01,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:30:01,849 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:01,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:01,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1599398589, now seen corresponding path program 4 times [2024-06-27 23:30:01,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:01,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304095015] [2024-06-27 23:30:01,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:01,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:03,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:03,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304095015] [2024-06-27 23:30:03,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304095015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:03,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:03,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:03,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188788589] [2024-06-27 23:30:03,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:03,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:03,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:03,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:03,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:03,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:03,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 150 transitions, 1480 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:03,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:03,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:03,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:03,238 INFO L124 PetriNetUnfolderBase]: 366/652 cut-off events. [2024-06-27 23:30:03,238 INFO L125 PetriNetUnfolderBase]: For 27581/27581 co-relation queries the response was YES. [2024-06-27 23:30:03,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4292 conditions, 652 events. 366/652 cut-off events. For 27581/27581 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2843 event pairs, 27 based on Foata normal form. 2/653 useless extension candidates. Maximal degree in co-relation 4207. Up to 473 conditions per place. [2024-06-27 23:30:03,243 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 127 selfloop transitions, 37 changer transitions 0/166 dead transitions. [2024-06-27 23:30:03,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 166 transitions, 1950 flow [2024-06-27 23:30:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:30:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:30:03,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-27 23:30:03,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-27 23:30:03,246 INFO L175 Difference]: Start difference. First operand has 169 places, 150 transitions, 1480 flow. Second operand 7 states and 97 transitions. [2024-06-27 23:30:03,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 166 transitions, 1950 flow [2024-06-27 23:30:03,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 166 transitions, 1897 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:03,306 INFO L231 Difference]: Finished difference. Result has 168 places, 151 transitions, 1519 flow [2024-06-27 23:30:03,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1427, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1519, PETRI_PLACES=168, PETRI_TRANSITIONS=151} [2024-06-27 23:30:03,307 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2024-06-27 23:30:03,307 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 151 transitions, 1519 flow [2024-06-27 23:30:03,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:03,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:03,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:03,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:30:03,308 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:03,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:03,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1599459039, now seen corresponding path program 5 times [2024-06-27 23:30:03,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:03,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391704936] [2024-06-27 23:30:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:03,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:04,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:04,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391704936] [2024-06-27 23:30:04,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391704936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:04,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:04,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:04,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786644533] [2024-06-27 23:30:04,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:04,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:04,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:04,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:04,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:04,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:04,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 151 transitions, 1519 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:04,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:04,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:04,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:04,697 INFO L124 PetriNetUnfolderBase]: 370/660 cut-off events. [2024-06-27 23:30:04,697 INFO L125 PetriNetUnfolderBase]: For 28908/28908 co-relation queries the response was YES. [2024-06-27 23:30:04,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4419 conditions, 660 events. 370/660 cut-off events. For 28908/28908 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2894 event pairs, 46 based on Foata normal form. 2/661 useless extension candidates. Maximal degree in co-relation 4335. Up to 548 conditions per place. [2024-06-27 23:30:04,701 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 131 selfloop transitions, 32 changer transitions 0/165 dead transitions. [2024-06-27 23:30:04,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 165 transitions, 1895 flow [2024-06-27 23:30:04,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:30:04,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:30:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-27 23:30:04,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2024-06-27 23:30:04,703 INFO L175 Difference]: Start difference. First operand has 168 places, 151 transitions, 1519 flow. Second operand 7 states and 97 transitions. [2024-06-27 23:30:04,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 165 transitions, 1895 flow [2024-06-27 23:30:04,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 165 transitions, 1817 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 23:30:04,765 INFO L231 Difference]: Finished difference. Result has 170 places, 152 transitions, 1527 flow [2024-06-27 23:30:04,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1527, PETRI_PLACES=170, PETRI_TRANSITIONS=152} [2024-06-27 23:30:04,766 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 141 predicate places. [2024-06-27 23:30:04,766 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 152 transitions, 1527 flow [2024-06-27 23:30:04,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:04,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:04,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:04,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:30:04,767 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:04,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:04,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1962313543, now seen corresponding path program 9 times [2024-06-27 23:30:04,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:04,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203554595] [2024-06-27 23:30:04,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:04,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:05,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:05,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:05,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203554595] [2024-06-27 23:30:05,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203554595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:05,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:05,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:05,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883321558] [2024-06-27 23:30:05,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:05,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:05,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:05,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:05,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:05,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:05,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 152 transitions, 1527 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:05,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:05,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:05,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:06,163 INFO L124 PetriNetUnfolderBase]: 373/665 cut-off events. [2024-06-27 23:30:06,163 INFO L125 PetriNetUnfolderBase]: For 27845/27845 co-relation queries the response was YES. [2024-06-27 23:30:06,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4411 conditions, 665 events. 373/665 cut-off events. For 27845/27845 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 2927 event pairs, 51 based on Foata normal form. 1/665 useless extension candidates. Maximal degree in co-relation 4327. Up to 487 conditions per place. [2024-06-27 23:30:06,184 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 106 selfloop transitions, 61 changer transitions 0/169 dead transitions. [2024-06-27 23:30:06,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 169 transitions, 2017 flow [2024-06-27 23:30:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:06,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:06,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:30:06,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 23:30:06,185 INFO L175 Difference]: Start difference. First operand has 170 places, 152 transitions, 1527 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:30:06,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 169 transitions, 2017 flow [2024-06-27 23:30:06,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 169 transitions, 1930 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:06,250 INFO L231 Difference]: Finished difference. Result has 171 places, 156 transitions, 1604 flow [2024-06-27 23:30:06,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1604, PETRI_PLACES=171, PETRI_TRANSITIONS=156} [2024-06-27 23:30:06,250 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-06-27 23:30:06,251 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 156 transitions, 1604 flow [2024-06-27 23:30:06,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:06,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:06,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:06,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:30:06,251 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:06,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:06,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1974945733, now seen corresponding path program 10 times [2024-06-27 23:30:06,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:06,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834985148] [2024-06-27 23:30:06,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:06,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:07,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:07,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834985148] [2024-06-27 23:30:07,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834985148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:07,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:07,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:07,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373425445] [2024-06-27 23:30:07,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:07,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:07,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:07,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:07,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:07,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 156 transitions, 1604 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 23:30:07,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:07,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:07,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:07,668 INFO L124 PetriNetUnfolderBase]: 376/670 cut-off events. [2024-06-27 23:30:07,669 INFO L125 PetriNetUnfolderBase]: For 27898/27898 co-relation queries the response was YES. [2024-06-27 23:30:07,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4460 conditions, 670 events. 376/670 cut-off events. For 27898/27898 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2949 event pairs, 47 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 4376. Up to 560 conditions per place. [2024-06-27 23:30:07,673 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 119 selfloop transitions, 46 changer transitions 0/167 dead transitions. [2024-06-27 23:30:07,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 167 transitions, 1974 flow [2024-06-27 23:30:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-27 23:30:07,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:30:07,675 INFO L175 Difference]: Start difference. First operand has 171 places, 156 transitions, 1604 flow. Second operand 8 states and 104 transitions. [2024-06-27 23:30:07,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 167 transitions, 1974 flow [2024-06-27 23:30:07,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 167 transitions, 1911 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 23:30:07,739 INFO L231 Difference]: Finished difference. Result has 174 places, 158 transitions, 1663 flow [2024-06-27 23:30:07,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1543, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1663, PETRI_PLACES=174, PETRI_TRANSITIONS=158} [2024-06-27 23:30:07,740 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-06-27 23:30:07,740 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 158 transitions, 1663 flow [2024-06-27 23:30:07,740 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 23:30:07,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:07,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:07,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:30:07,741 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:07,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:07,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1602255673, now seen corresponding path program 11 times [2024-06-27 23:30:07,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:07,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778583615] [2024-06-27 23:30:07,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:07,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:08,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:08,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778583615] [2024-06-27 23:30:08,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778583615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:08,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:08,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:08,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684515178] [2024-06-27 23:30:08,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:08,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:08,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:08,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:08,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:08,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 158 transitions, 1663 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:08,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:08,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:08,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:09,055 INFO L124 PetriNetUnfolderBase]: 379/675 cut-off events. [2024-06-27 23:30:09,055 INFO L125 PetriNetUnfolderBase]: For 27874/27874 co-relation queries the response was YES. [2024-06-27 23:30:09,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 675 events. 379/675 cut-off events. For 27874/27874 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2979 event pairs, 47 based on Foata normal form. 1/675 useless extension candidates. Maximal degree in co-relation 4462. Up to 553 conditions per place. [2024-06-27 23:30:09,059 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 116 selfloop transitions, 51 changer transitions 0/169 dead transitions. [2024-06-27 23:30:09,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 169 transitions, 2039 flow [2024-06-27 23:30:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:30:09,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:30:09,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-27 23:30:09,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 23:30:09,061 INFO L175 Difference]: Start difference. First operand has 174 places, 158 transitions, 1663 flow. Second operand 7 states and 98 transitions. [2024-06-27 23:30:09,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 169 transitions, 2039 flow [2024-06-27 23:30:09,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 169 transitions, 1944 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:09,124 INFO L231 Difference]: Finished difference. Result has 174 places, 160 transitions, 1702 flow [2024-06-27 23:30:09,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1702, PETRI_PLACES=174, PETRI_TRANSITIONS=160} [2024-06-27 23:30:09,124 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 145 predicate places. [2024-06-27 23:30:09,124 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 160 transitions, 1702 flow [2024-06-27 23:30:09,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:09,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:09,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:09,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:30:09,125 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:09,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:09,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1602255549, now seen corresponding path program 6 times [2024-06-27 23:30:09,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:09,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962152672] [2024-06-27 23:30:09,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:09,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:10,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:10,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962152672] [2024-06-27 23:30:10,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962152672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:10,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:10,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:10,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769579263] [2024-06-27 23:30:10,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:10,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:10,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:10,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:10,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:10,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 160 transitions, 1702 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 23:30:10,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:10,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:10,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:10,693 INFO L124 PetriNetUnfolderBase]: 376/670 cut-off events. [2024-06-27 23:30:10,693 INFO L125 PetriNetUnfolderBase]: For 26871/26871 co-relation queries the response was YES. [2024-06-27 23:30:10,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4454 conditions, 670 events. 376/670 cut-off events. For 26871/26871 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2947 event pairs, 43 based on Foata normal form. 2/671 useless extension candidates. Maximal degree in co-relation 4370. Up to 587 conditions per place. [2024-06-27 23:30:10,698 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 138 selfloop transitions, 30 changer transitions 0/170 dead transitions. [2024-06-27 23:30:10,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 170 transitions, 2062 flow [2024-06-27 23:30:10,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:10,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:10,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 23:30:10,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-27 23:30:10,700 INFO L175 Difference]: Start difference. First operand has 174 places, 160 transitions, 1702 flow. Second operand 8 states and 101 transitions. [2024-06-27 23:30:10,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 170 transitions, 2062 flow [2024-06-27 23:30:10,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 170 transitions, 1951 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:10,755 INFO L231 Difference]: Finished difference. Result has 176 places, 160 transitions, 1657 flow [2024-06-27 23:30:10,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1657, PETRI_PLACES=176, PETRI_TRANSITIONS=160} [2024-06-27 23:30:10,756 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2024-06-27 23:30:10,756 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 160 transitions, 1657 flow [2024-06-27 23:30:10,756 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 23:30:10,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:10,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:10,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:30:10,757 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:10,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:10,757 INFO L85 PathProgramCache]: Analyzing trace with hash 745349549, now seen corresponding path program 12 times [2024-06-27 23:30:10,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:10,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162723254] [2024-06-27 23:30:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:10,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:11,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:11,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162723254] [2024-06-27 23:30:11,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162723254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:11,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:11,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:11,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120283136] [2024-06-27 23:30:11,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:11,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:11,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:11,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:11,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:11,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:11,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 160 transitions, 1657 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:11,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:11,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:11,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:12,150 INFO L124 PetriNetUnfolderBase]: 379/676 cut-off events. [2024-06-27 23:30:12,151 INFO L125 PetriNetUnfolderBase]: For 25710/25710 co-relation queries the response was YES. [2024-06-27 23:30:12,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4442 conditions, 676 events. 379/676 cut-off events. For 25710/25710 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 2993 event pairs, 44 based on Foata normal form. 1/676 useless extension candidates. Maximal degree in co-relation 4357. Up to 524 conditions per place. [2024-06-27 23:30:12,156 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 112 selfloop transitions, 64 changer transitions 0/178 dead transitions. [2024-06-27 23:30:12,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 178 transitions, 2175 flow [2024-06-27 23:30:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-27 23:30:12,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-06-27 23:30:12,158 INFO L175 Difference]: Start difference. First operand has 176 places, 160 transitions, 1657 flow. Second operand 8 states and 113 transitions. [2024-06-27 23:30:12,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 178 transitions, 2175 flow [2024-06-27 23:30:12,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 178 transitions, 2095 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:12,219 INFO L231 Difference]: Finished difference. Result has 176 places, 162 transitions, 1739 flow [2024-06-27 23:30:12,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1739, PETRI_PLACES=176, PETRI_TRANSITIONS=162} [2024-06-27 23:30:12,220 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2024-06-27 23:30:12,220 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 162 transitions, 1739 flow [2024-06-27 23:30:12,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:12,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:12,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:12,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:30:12,221 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:12,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash 737310629, now seen corresponding path program 13 times [2024-06-27 23:30:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:12,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930618362] [2024-06-27 23:30:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:12,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:13,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:13,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930618362] [2024-06-27 23:30:13,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930618362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:13,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:13,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:30:13,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051418392] [2024-06-27 23:30:13,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:13,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:30:13,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:13,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:30:13,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:30:13,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:13,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 162 transitions, 1739 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:13,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:13,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:13,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:13,536 INFO L124 PetriNetUnfolderBase]: 382/683 cut-off events. [2024-06-27 23:30:13,537 INFO L125 PetriNetUnfolderBase]: For 25756/25756 co-relation queries the response was YES. [2024-06-27 23:30:13,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4534 conditions, 683 events. 382/683 cut-off events. For 25756/25756 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3038 event pairs, 54 based on Foata normal form. 1/683 useless extension candidates. Maximal degree in co-relation 4449. Up to 570 conditions per place. [2024-06-27 23:30:13,542 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 125 selfloop transitions, 49 changer transitions 0/176 dead transitions. [2024-06-27 23:30:13,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 176 transitions, 2151 flow [2024-06-27 23:30:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:30:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:30:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-27 23:30:13,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 23:30:13,543 INFO L175 Difference]: Start difference. First operand has 176 places, 162 transitions, 1739 flow. Second operand 7 states and 100 transitions. [2024-06-27 23:30:13,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 176 transitions, 2151 flow [2024-06-27 23:30:13,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 176 transitions, 1992 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:13,608 INFO L231 Difference]: Finished difference. Result has 176 places, 164 transitions, 1718 flow [2024-06-27 23:30:13,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1718, PETRI_PLACES=176, PETRI_TRANSITIONS=164} [2024-06-27 23:30:13,609 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2024-06-27 23:30:13,609 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 164 transitions, 1718 flow [2024-06-27 23:30:13,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:13,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:13,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:13,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:30:13,609 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:13,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:13,610 INFO L85 PathProgramCache]: Analyzing trace with hash 737310815, now seen corresponding path program 7 times [2024-06-27 23:30:13,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:13,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021836651] [2024-06-27 23:30:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:13,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:15,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:15,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021836651] [2024-06-27 23:30:15,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021836651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:15,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:15,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:15,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262283574] [2024-06-27 23:30:15,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:15,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:15,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:15,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:15,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:15,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:15,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 164 transitions, 1718 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:15,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:15,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:15,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:15,555 INFO L124 PetriNetUnfolderBase]: 388/690 cut-off events. [2024-06-27 23:30:15,555 INFO L125 PetriNetUnfolderBase]: For 26730/26730 co-relation queries the response was YES. [2024-06-27 23:30:15,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4520 conditions, 690 events. 388/690 cut-off events. For 26730/26730 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3087 event pairs, 48 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 4436. Up to 469 conditions per place. [2024-06-27 23:30:15,560 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 126 selfloop transitions, 56 changer transitions 0/184 dead transitions. [2024-06-27 23:30:15,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 184 transitions, 2340 flow [2024-06-27 23:30:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:30:15,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:30:15,562 INFO L175 Difference]: Start difference. First operand has 176 places, 164 transitions, 1718 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:30:15,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 184 transitions, 2340 flow [2024-06-27 23:30:15,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 184 transitions, 2227 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:15,623 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 1740 flow [2024-06-27 23:30:15,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1740, PETRI_PLACES=179, PETRI_TRANSITIONS=166} [2024-06-27 23:30:15,623 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2024-06-27 23:30:15,623 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 1740 flow [2024-06-27 23:30:15,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:15,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:15,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:15,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:30:15,624 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:15,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:15,624 INFO L85 PathProgramCache]: Analyzing trace with hash 737483609, now seen corresponding path program 14 times [2024-06-27 23:30:15,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:15,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746091017] [2024-06-27 23:30:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:15,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:16,798 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 23:30:16,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:16,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746091017] [2024-06-27 23:30:16,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746091017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:16,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:16,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:16,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274902061] [2024-06-27 23:30:16,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:16,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:16,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:16,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:16,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:16,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:30:16,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 166 transitions, 1740 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 23:30:16,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:16,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:30:16,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:17,149 INFO L124 PetriNetUnfolderBase]: 386/687 cut-off events. [2024-06-27 23:30:17,149 INFO L125 PetriNetUnfolderBase]: For 24782/24782 co-relation queries the response was YES. [2024-06-27 23:30:17,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4489 conditions, 687 events. 386/687 cut-off events. For 24782/24782 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3051 event pairs, 45 based on Foata normal form. 1/687 useless extension candidates. Maximal degree in co-relation 4404. Up to 577 conditions per place. [2024-06-27 23:30:17,154 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 129 selfloop transitions, 45 changer transitions 0/176 dead transitions. [2024-06-27 23:30:17,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 176 transitions, 2112 flow [2024-06-27 23:30:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:30:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:30:17,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-27 23:30:17,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-27 23:30:17,155 INFO L175 Difference]: Start difference. First operand has 179 places, 166 transitions, 1740 flow. Second operand 8 states and 107 transitions. [2024-06-27 23:30:17,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 176 transitions, 2112 flow [2024-06-27 23:30:17,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 176 transitions, 1984 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:17,212 INFO L231 Difference]: Finished difference. Result has 180 places, 166 transitions, 1710 flow [2024-06-27 23:30:17,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1710, PETRI_PLACES=180, PETRI_TRANSITIONS=166} [2024-06-27 23:30:17,212 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2024-06-27 23:30:17,212 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 166 transitions, 1710 flow [2024-06-27 23:30:17,212 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 23:30:17,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:17,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:17,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:30:17,213 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:17,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:17,213 INFO L85 PathProgramCache]: Analyzing trace with hash 349604975, now seen corresponding path program 8 times [2024-06-27 23:30:17,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:17,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447213546] [2024-06-27 23:30:17,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:17,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:18,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:18,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447213546] [2024-06-27 23:30:18,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447213546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:18,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:18,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:18,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890046547] [2024-06-27 23:30:18,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:18,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:18,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:18,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:18,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:18,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:18,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 166 transitions, 1710 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:18,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:18,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:18,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:19,291 INFO L124 PetriNetUnfolderBase]: 392/698 cut-off events. [2024-06-27 23:30:19,292 INFO L125 PetriNetUnfolderBase]: For 26709/26709 co-relation queries the response was YES. [2024-06-27 23:30:19,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4500 conditions, 698 events. 392/698 cut-off events. For 26709/26709 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3131 event pairs, 45 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 4415. Up to 472 conditions per place. [2024-06-27 23:30:19,296 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 126 selfloop transitions, 59 changer transitions 0/187 dead transitions. [2024-06-27 23:30:19,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 187 transitions, 2346 flow [2024-06-27 23:30:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:30:19,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:30:19,298 INFO L175 Difference]: Start difference. First operand has 180 places, 166 transitions, 1710 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:30:19,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 187 transitions, 2346 flow [2024-06-27 23:30:19,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 187 transitions, 2198 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 23:30:19,353 INFO L231 Difference]: Finished difference. Result has 181 places, 168 transitions, 1703 flow [2024-06-27 23:30:19,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1703, PETRI_PLACES=181, PETRI_TRANSITIONS=168} [2024-06-27 23:30:19,354 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2024-06-27 23:30:19,354 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 168 transitions, 1703 flow [2024-06-27 23:30:19,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:19,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:19,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:19,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:30:19,355 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:19,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash 349611485, now seen corresponding path program 9 times [2024-06-27 23:30:19,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:19,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211280468] [2024-06-27 23:30:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:19,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:20,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:20,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211280468] [2024-06-27 23:30:20,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211280468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:20,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:20,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:20,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090359030] [2024-06-27 23:30:20,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:20,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:20,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:20,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:20,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:20,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:20,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 168 transitions, 1703 flow. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:20,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:20,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:20,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:21,295 INFO L124 PetriNetUnfolderBase]: 388/692 cut-off events. [2024-06-27 23:30:21,295 INFO L125 PetriNetUnfolderBase]: For 24597/24597 co-relation queries the response was YES. [2024-06-27 23:30:21,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4358 conditions, 692 events. 388/692 cut-off events. For 24597/24597 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3095 event pairs, 47 based on Foata normal form. 2/693 useless extension candidates. Maximal degree in co-relation 4273. Up to 469 conditions per place. [2024-06-27 23:30:21,300 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 126 selfloop transitions, 60 changer transitions 0/188 dead transitions. [2024-06-27 23:30:21,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 188 transitions, 2235 flow [2024-06-27 23:30:21,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:30:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:30:21,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-27 23:30:21,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-27 23:30:21,301 INFO L175 Difference]: Start difference. First operand has 181 places, 168 transitions, 1703 flow. Second operand 12 states and 146 transitions. [2024-06-27 23:30:21,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 188 transitions, 2235 flow [2024-06-27 23:30:21,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 188 transitions, 2104 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:21,350 INFO L231 Difference]: Finished difference. Result has 185 places, 168 transitions, 1697 flow [2024-06-27 23:30:21,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1697, PETRI_PLACES=185, PETRI_TRANSITIONS=168} [2024-06-27 23:30:21,350 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-27 23:30:21,350 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 168 transitions, 1697 flow [2024-06-27 23:30:21,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:21,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:21,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:21,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:30:21,351 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:21,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:21,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1203455895, now seen corresponding path program 1 times [2024-06-27 23:30:21,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:21,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856695639] [2024-06-27 23:30:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:21,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:22,743 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 23:30:22,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:22,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856695639] [2024-06-27 23:30:22,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856695639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:22,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:22,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:22,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200415733] [2024-06-27 23:30:22,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:22,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:22,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:22,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:22,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:22,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:22,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 168 transitions, 1697 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:22,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:22,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:22,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:23,138 INFO L124 PetriNetUnfolderBase]: 399/713 cut-off events. [2024-06-27 23:30:23,138 INFO L125 PetriNetUnfolderBase]: For 27870/27870 co-relation queries the response was YES. [2024-06-27 23:30:23,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4531 conditions, 713 events. 399/713 cut-off events. For 27870/27870 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3249 event pairs, 81 based on Foata normal form. 2/714 useless extension candidates. Maximal degree in co-relation 4445. Up to 531 conditions per place. [2024-06-27 23:30:23,143 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 138 selfloop transitions, 45 changer transitions 0/185 dead transitions. [2024-06-27 23:30:23,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 185 transitions, 2209 flow [2024-06-27 23:30:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:30:23,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:30:23,144 INFO L175 Difference]: Start difference. First operand has 185 places, 168 transitions, 1697 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:30:23,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 185 transitions, 2209 flow [2024-06-27 23:30:23,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 185 transitions, 2084 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 23:30:23,196 INFO L231 Difference]: Finished difference. Result has 184 places, 170 transitions, 1680 flow [2024-06-27 23:30:23,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1680, PETRI_PLACES=184, PETRI_TRANSITIONS=170} [2024-06-27 23:30:23,196 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-27 23:30:23,196 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 170 transitions, 1680 flow [2024-06-27 23:30:23,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:23,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:23,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:23,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:30:23,197 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:23,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:23,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1205333565, now seen corresponding path program 2 times [2024-06-27 23:30:23,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:23,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281876860] [2024-06-27 23:30:23,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:23,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:24,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:24,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281876860] [2024-06-27 23:30:24,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281876860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:24,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:24,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:24,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664185662] [2024-06-27 23:30:24,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:24,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:24,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:24,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:24,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:24,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:24,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 170 transitions, 1680 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:24,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:24,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:24,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:25,155 INFO L124 PetriNetUnfolderBase]: 413/737 cut-off events. [2024-06-27 23:30:25,156 INFO L125 PetriNetUnfolderBase]: For 31192/31192 co-relation queries the response was YES. [2024-06-27 23:30:25,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4694 conditions, 737 events. 413/737 cut-off events. For 31192/31192 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3349 event pairs, 91 based on Foata normal form. 2/738 useless extension candidates. Maximal degree in co-relation 4607. Up to 610 conditions per place. [2024-06-27 23:30:25,161 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 134 selfloop transitions, 50 changer transitions 0/186 dead transitions. [2024-06-27 23:30:25,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 186 transitions, 2208 flow [2024-06-27 23:30:25,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:25,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:30:25,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-27 23:30:25,163 INFO L175 Difference]: Start difference. First operand has 184 places, 170 transitions, 1680 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:30:25,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 186 transitions, 2208 flow [2024-06-27 23:30:25,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 186 transitions, 2141 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:25,237 INFO L231 Difference]: Finished difference. Result has 189 places, 173 transitions, 1776 flow [2024-06-27 23:30:25,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1617, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1776, PETRI_PLACES=189, PETRI_TRANSITIONS=173} [2024-06-27 23:30:25,237 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-27 23:30:25,238 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 173 transitions, 1776 flow [2024-06-27 23:30:25,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:25,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:25,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:25,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:30:25,238 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:25,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:25,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1205329845, now seen corresponding path program 3 times [2024-06-27 23:30:25,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:25,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836604676] [2024-06-27 23:30:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:26,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:26,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836604676] [2024-06-27 23:30:26,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836604676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:26,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:26,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:26,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50324942] [2024-06-27 23:30:26,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:26,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:26,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:26,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:26,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 173 transitions, 1776 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:26,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:26,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:26,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:27,043 INFO L124 PetriNetUnfolderBase]: 417/745 cut-off events. [2024-06-27 23:30:27,043 INFO L125 PetriNetUnfolderBase]: For 32586/32586 co-relation queries the response was YES. [2024-06-27 23:30:27,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4875 conditions, 745 events. 417/745 cut-off events. For 32586/32586 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3420 event pairs, 88 based on Foata normal form. 2/746 useless extension candidates. Maximal degree in co-relation 4785. Up to 622 conditions per place. [2024-06-27 23:30:27,049 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 139 selfloop transitions, 45 changer transitions 0/186 dead transitions. [2024-06-27 23:30:27,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 186 transitions, 2180 flow [2024-06-27 23:30:27,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:27,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:27,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 23:30:27,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-27 23:30:27,050 INFO L175 Difference]: Start difference. First operand has 189 places, 173 transitions, 1776 flow. Second operand 10 states and 113 transitions. [2024-06-27 23:30:27,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 186 transitions, 2180 flow [2024-06-27 23:30:27,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 186 transitions, 2105 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:27,124 INFO L231 Difference]: Finished difference. Result has 192 places, 174 transitions, 1803 flow [2024-06-27 23:30:27,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1803, PETRI_PLACES=192, PETRI_TRANSITIONS=174} [2024-06-27 23:30:27,124 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-06-27 23:30:27,124 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 174 transitions, 1803 flow [2024-06-27 23:30:27,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:27,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:27,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:27,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:30:27,125 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:27,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:27,125 INFO L85 PathProgramCache]: Analyzing trace with hash 528312014, now seen corresponding path program 1 times [2024-06-27 23:30:27,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:27,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215756879] [2024-06-27 23:30:27,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:27,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:28,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:28,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215756879] [2024-06-27 23:30:28,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215756879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:28,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:28,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:28,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848688983] [2024-06-27 23:30:28,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:28,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:28,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:28,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:28,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:28,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:28,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 174 transitions, 1803 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:28,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:28,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:28,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:28,978 INFO L124 PetriNetUnfolderBase]: 433/771 cut-off events. [2024-06-27 23:30:28,979 INFO L125 PetriNetUnfolderBase]: For 36465/36465 co-relation queries the response was YES. [2024-06-27 23:30:28,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5137 conditions, 771 events. 433/771 cut-off events. For 36465/36465 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3574 event pairs, 88 based on Foata normal form. 2/772 useless extension candidates. Maximal degree in co-relation 5046. Up to 515 conditions per place. [2024-06-27 23:30:28,985 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 135 selfloop transitions, 56 changer transitions 0/193 dead transitions. [2024-06-27 23:30:28,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 193 transitions, 2481 flow [2024-06-27 23:30:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:28,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:28,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:30:28,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-27 23:30:28,995 INFO L175 Difference]: Start difference. First operand has 192 places, 174 transitions, 1803 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:30:28,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 193 transitions, 2481 flow [2024-06-27 23:30:29,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 193 transitions, 2391 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:29,075 INFO L231 Difference]: Finished difference. Result has 194 places, 178 transitions, 1878 flow [2024-06-27 23:30:29,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1878, PETRI_PLACES=194, PETRI_TRANSITIONS=178} [2024-06-27 23:30:29,076 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-27 23:30:29,077 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 178 transitions, 1878 flow [2024-06-27 23:30:29,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:29,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:29,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:29,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:30:29,077 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:29,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:29,078 INFO L85 PathProgramCache]: Analyzing trace with hash 615153554, now seen corresponding path program 2 times [2024-06-27 23:30:29,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:29,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395295909] [2024-06-27 23:30:29,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:29,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:30,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:30,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395295909] [2024-06-27 23:30:30,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395295909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:30,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:30,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:30,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243471370] [2024-06-27 23:30:30,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:30,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:30,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:30,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:30,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:30,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:30,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 178 transitions, 1878 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:30,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:30,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:30,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:30,972 INFO L124 PetriNetUnfolderBase]: 439/781 cut-off events. [2024-06-27 23:30:30,972 INFO L125 PetriNetUnfolderBase]: For 38041/38041 co-relation queries the response was YES. [2024-06-27 23:30:30,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5288 conditions, 781 events. 439/781 cut-off events. For 38041/38041 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3626 event pairs, 89 based on Foata normal form. 2/782 useless extension candidates. Maximal degree in co-relation 5196. Up to 622 conditions per place. [2024-06-27 23:30:30,986 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 146 selfloop transitions, 45 changer transitions 0/193 dead transitions. [2024-06-27 23:30:30,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 193 transitions, 2432 flow [2024-06-27 23:30:30,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:30,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:30,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:30:30,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-27 23:30:30,990 INFO L175 Difference]: Start difference. First operand has 194 places, 178 transitions, 1878 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:30:30,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 193 transitions, 2432 flow [2024-06-27 23:30:31,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 193 transitions, 2354 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 23:30:31,085 INFO L231 Difference]: Finished difference. Result has 198 places, 180 transitions, 1925 flow [2024-06-27 23:30:31,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1925, PETRI_PLACES=198, PETRI_TRANSITIONS=180} [2024-06-27 23:30:31,087 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 169 predicate places. [2024-06-27 23:30:31,087 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 180 transitions, 1925 flow [2024-06-27 23:30:31,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:31,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:31,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:31,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:30:31,088 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:31,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:31,088 INFO L85 PathProgramCache]: Analyzing trace with hash 615147819, now seen corresponding path program 4 times [2024-06-27 23:30:31,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:31,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562846238] [2024-06-27 23:30:31,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:31,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:32,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:32,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562846238] [2024-06-27 23:30:32,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562846238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:32,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:32,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:32,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129176578] [2024-06-27 23:30:32,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:32,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:32,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:32,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:32,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:32,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:32,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 180 transitions, 1925 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:32,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:32,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:32,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:32,610 INFO L124 PetriNetUnfolderBase]: 443/789 cut-off events. [2024-06-27 23:30:32,610 INFO L125 PetriNetUnfolderBase]: For 39499/39499 co-relation queries the response was YES. [2024-06-27 23:30:32,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5404 conditions, 789 events. 443/789 cut-off events. For 39499/39499 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3667 event pairs, 92 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 5310. Up to 715 conditions per place. [2024-06-27 23:30:32,616 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 159 selfloop transitions, 30 changer transitions 0/191 dead transitions. [2024-06-27 23:30:32,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 191 transitions, 2335 flow [2024-06-27 23:30:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 23:30:32,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-06-27 23:30:32,617 INFO L175 Difference]: Start difference. First operand has 198 places, 180 transitions, 1925 flow. Second operand 9 states and 104 transitions. [2024-06-27 23:30:32,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 191 transitions, 2335 flow [2024-06-27 23:30:32,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 191 transitions, 2234 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:32,703 INFO L231 Difference]: Finished difference. Result has 199 places, 181 transitions, 1898 flow [2024-06-27 23:30:32,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1898, PETRI_PLACES=199, PETRI_TRANSITIONS=181} [2024-06-27 23:30:32,703 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-27 23:30:32,703 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 181 transitions, 1898 flow [2024-06-27 23:30:32,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:32,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:32,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:32,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:30:32,704 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:32,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1777864256, now seen corresponding path program 3 times [2024-06-27 23:30:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:32,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174315709] [2024-06-27 23:30:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:32,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:34,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:34,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:34,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174315709] [2024-06-27 23:30:34,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174315709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:34,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:34,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:34,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729151751] [2024-06-27 23:30:34,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:34,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:34,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:34,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:34,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:34,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:34,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 181 transitions, 1898 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:34,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:34,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:34,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:34,421 INFO L124 PetriNetUnfolderBase]: 449/799 cut-off events. [2024-06-27 23:30:34,422 INFO L125 PetriNetUnfolderBase]: For 40925/40925 co-relation queries the response was YES. [2024-06-27 23:30:34,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 799 events. 449/799 cut-off events. For 40925/40925 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3747 event pairs, 93 based on Foata normal form. 2/800 useless extension candidates. Maximal degree in co-relation 5335. Up to 716 conditions per place. [2024-06-27 23:30:34,428 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 156 selfloop transitions, 35 changer transitions 0/193 dead transitions. [2024-06-27 23:30:34,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 193 transitions, 2334 flow [2024-06-27 23:30:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 23:30:34,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-27 23:30:34,429 INFO L175 Difference]: Start difference. First operand has 199 places, 181 transitions, 1898 flow. Second operand 10 states and 113 transitions. [2024-06-27 23:30:34,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 193 transitions, 2334 flow [2024-06-27 23:30:34,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 193 transitions, 2272 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:34,525 INFO L231 Difference]: Finished difference. Result has 202 places, 183 transitions, 1941 flow [2024-06-27 23:30:34,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1941, PETRI_PLACES=202, PETRI_TRANSITIONS=183} [2024-06-27 23:30:34,526 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-27 23:30:34,526 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 183 transitions, 1941 flow [2024-06-27 23:30:34,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:34,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:34,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:34,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:30:34,527 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:34,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:34,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1777719951, now seen corresponding path program 5 times [2024-06-27 23:30:34,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:34,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77622591] [2024-06-27 23:30:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:34,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:35,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:35,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77622591] [2024-06-27 23:30:35,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77622591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:35,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:35,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:35,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768862733] [2024-06-27 23:30:35,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:35,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:35,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:35,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:35,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:35,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:35,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 183 transitions, 1941 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:35,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:35,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:35,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:36,020 INFO L124 PetriNetUnfolderBase]: 453/807 cut-off events. [2024-06-27 23:30:36,021 INFO L125 PetriNetUnfolderBase]: For 42415/42415 co-relation queries the response was YES. [2024-06-27 23:30:36,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5507 conditions, 807 events. 453/807 cut-off events. For 42415/42415 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3810 event pairs, 94 based on Foata normal form. 2/808 useless extension candidates. Maximal degree in co-relation 5411. Up to 727 conditions per place. [2024-06-27 23:30:36,027 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 159 selfloop transitions, 33 changer transitions 0/194 dead transitions. [2024-06-27 23:30:36,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 194 transitions, 2359 flow [2024-06-27 23:30:36,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 23:30:36,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 23:30:36,028 INFO L175 Difference]: Start difference. First operand has 202 places, 183 transitions, 1941 flow. Second operand 9 states and 105 transitions. [2024-06-27 23:30:36,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 194 transitions, 2359 flow [2024-06-27 23:30:36,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 194 transitions, 2274 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:36,130 INFO L231 Difference]: Finished difference. Result has 203 places, 184 transitions, 1938 flow [2024-06-27 23:30:36,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1938, PETRI_PLACES=203, PETRI_TRANSITIONS=184} [2024-06-27 23:30:36,131 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 174 predicate places. [2024-06-27 23:30:36,131 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 184 transitions, 1938 flow [2024-06-27 23:30:36,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:36,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:36,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:36,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:30:36,131 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:36,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:36,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1777720106, now seen corresponding path program 4 times [2024-06-27 23:30:36,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:36,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804080150] [2024-06-27 23:30:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:36,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:37,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:37,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804080150] [2024-06-27 23:30:37,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804080150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:37,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:37,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:37,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636287004] [2024-06-27 23:30:37,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:37,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:37,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:37,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:37,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:37,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 184 transitions, 1938 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:37,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:37,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:37,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:37,861 INFO L124 PetriNetUnfolderBase]: 459/817 cut-off events. [2024-06-27 23:30:37,862 INFO L125 PetriNetUnfolderBase]: For 43980/43980 co-relation queries the response was YES. [2024-06-27 23:30:37,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5575 conditions, 817 events. 459/817 cut-off events. For 43980/43980 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3847 event pairs, 96 based on Foata normal form. 2/818 useless extension candidates. Maximal degree in co-relation 5478. Up to 713 conditions per place. [2024-06-27 23:30:37,868 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 152 selfloop transitions, 43 changer transitions 0/197 dead transitions. [2024-06-27 23:30:37,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 197 transitions, 2392 flow [2024-06-27 23:30:37,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:37,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:37,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:30:37,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 23:30:37,870 INFO L175 Difference]: Start difference. First operand has 203 places, 184 transitions, 1938 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:30:37,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 197 transitions, 2392 flow [2024-06-27 23:30:37,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 197 transitions, 2322 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:37,982 INFO L231 Difference]: Finished difference. Result has 205 places, 186 transitions, 1993 flow [2024-06-27 23:30:37,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1868, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1993, PETRI_PLACES=205, PETRI_TRANSITIONS=186} [2024-06-27 23:30:37,982 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-27 23:30:37,983 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 186 transitions, 1993 flow [2024-06-27 23:30:37,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:37,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:37,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:37,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:30:37,983 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:37,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:37,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1777716231, now seen corresponding path program 6 times [2024-06-27 23:30:37,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:37,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64143639] [2024-06-27 23:30:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:37,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:39,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:39,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64143639] [2024-06-27 23:30:39,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64143639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:39,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:39,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:39,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925838439] [2024-06-27 23:30:39,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:39,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:39,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:39,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:39,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:39,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 186 transitions, 1993 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:39,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:39,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:39,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:39,698 INFO L124 PetriNetUnfolderBase]: 463/825 cut-off events. [2024-06-27 23:30:39,699 INFO L125 PetriNetUnfolderBase]: For 45545/45545 co-relation queries the response was YES. [2024-06-27 23:30:39,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5664 conditions, 825 events. 463/825 cut-off events. For 45545/45545 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3918 event pairs, 94 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 5566. Up to 725 conditions per place. [2024-06-27 23:30:39,705 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 161 selfloop transitions, 35 changer transitions 0/198 dead transitions. [2024-06-27 23:30:39,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 198 transitions, 2423 flow [2024-06-27 23:30:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:39,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 23:30:39,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-27 23:30:39,706 INFO L175 Difference]: Start difference. First operand has 205 places, 186 transitions, 1993 flow. Second operand 9 states and 106 transitions. [2024-06-27 23:30:39,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 198 transitions, 2423 flow [2024-06-27 23:30:39,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 198 transitions, 2318 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:39,806 INFO L231 Difference]: Finished difference. Result has 207 places, 187 transitions, 1976 flow [2024-06-27 23:30:39,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1976, PETRI_PLACES=207, PETRI_TRANSITIONS=187} [2024-06-27 23:30:39,806 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-06-27 23:30:39,807 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 187 transitions, 1976 flow [2024-06-27 23:30:39,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:39,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:39,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:39,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:30:39,807 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:39,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:39,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1056775205, now seen corresponding path program 7 times [2024-06-27 23:30:39,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:39,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954929091] [2024-06-27 23:30:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:39,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:41,118 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 23:30:41,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:41,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954929091] [2024-06-27 23:30:41,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954929091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:41,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:41,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:41,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531242644] [2024-06-27 23:30:41,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:41,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:41,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:41,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:41,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:41,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:41,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 187 transitions, 1976 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:41,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:41,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:41,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:41,514 INFO L124 PetriNetUnfolderBase]: 467/833 cut-off events. [2024-06-27 23:30:41,514 INFO L125 PetriNetUnfolderBase]: For 47141/47141 co-relation queries the response was YES. [2024-06-27 23:30:41,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5698 conditions, 833 events. 467/833 cut-off events. For 47141/47141 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3968 event pairs, 92 based on Foata normal form. 2/834 useless extension candidates. Maximal degree in co-relation 5599. Up to 704 conditions per place. [2024-06-27 23:30:41,520 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 156 selfloop transitions, 45 changer transitions 0/203 dead transitions. [2024-06-27 23:30:41,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 203 transitions, 2548 flow [2024-06-27 23:30:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:41,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:41,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 23:30:41,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 23:30:41,521 INFO L175 Difference]: Start difference. First operand has 207 places, 187 transitions, 1976 flow. Second operand 9 states and 112 transitions. [2024-06-27 23:30:41,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 203 transitions, 2548 flow [2024-06-27 23:30:41,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 203 transitions, 2472 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:41,628 INFO L231 Difference]: Finished difference. Result has 209 places, 188 transitions, 2008 flow [2024-06-27 23:30:41,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2008, PETRI_PLACES=209, PETRI_TRANSITIONS=188} [2024-06-27 23:30:41,628 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2024-06-27 23:30:41,628 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 188 transitions, 2008 flow [2024-06-27 23:30:41,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:41,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:41,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:41,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:30:41,629 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:41,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:41,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1056778925, now seen corresponding path program 8 times [2024-06-27 23:30:41,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:41,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519016252] [2024-06-27 23:30:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:41,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:43,071 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 23:30:43,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:43,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519016252] [2024-06-27 23:30:43,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519016252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:43,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:43,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:43,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362250553] [2024-06-27 23:30:43,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:43,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:43,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:43,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:43,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 188 transitions, 2008 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:43,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:43,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:43,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:43,459 INFO L124 PetriNetUnfolderBase]: 471/841 cut-off events. [2024-06-27 23:30:43,459 INFO L125 PetriNetUnfolderBase]: For 48784/48784 co-relation queries the response was YES. [2024-06-27 23:30:43,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5786 conditions, 841 events. 471/841 cut-off events. For 48784/48784 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4030 event pairs, 96 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 5686. Up to 747 conditions per place. [2024-06-27 23:30:43,466 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 156 selfloop transitions, 43 changer transitions 0/201 dead transitions. [2024-06-27 23:30:43,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 201 transitions, 2454 flow [2024-06-27 23:30:43,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:43,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:43,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 23:30:43,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:30:43,468 INFO L175 Difference]: Start difference. First operand has 209 places, 188 transitions, 2008 flow. Second operand 9 states and 108 transitions. [2024-06-27 23:30:43,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 201 transitions, 2454 flow [2024-06-27 23:30:43,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 201 transitions, 2344 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:43,583 INFO L231 Difference]: Finished difference. Result has 211 places, 189 transitions, 2006 flow [2024-06-27 23:30:43,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2006, PETRI_PLACES=211, PETRI_TRANSITIONS=189} [2024-06-27 23:30:43,585 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 182 predicate places. [2024-06-27 23:30:43,585 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 189 transitions, 2006 flow [2024-06-27 23:30:43,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:43,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:43,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:43,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:30:43,586 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:43,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:43,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1056779080, now seen corresponding path program 5 times [2024-06-27 23:30:43,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:43,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420241934] [2024-06-27 23:30:43,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:43,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:44,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:44,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420241934] [2024-06-27 23:30:44,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420241934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:44,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:44,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:30:44,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500709284] [2024-06-27 23:30:44,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:44,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:30:44,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:44,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:30:44,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:30:45,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:45,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 189 transitions, 2006 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:45,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:45,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:45,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:45,362 INFO L124 PetriNetUnfolderBase]: 492/875 cut-off events. [2024-06-27 23:30:45,363 INFO L125 PetriNetUnfolderBase]: For 56009/56009 co-relation queries the response was YES. [2024-06-27 23:30:45,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6175 conditions, 875 events. 492/875 cut-off events. For 56009/56009 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4225 event pairs, 103 based on Foata normal form. 2/876 useless extension candidates. Maximal degree in co-relation 6074. Up to 735 conditions per place. [2024-06-27 23:30:45,369 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 151 selfloop transitions, 56 changer transitions 0/209 dead transitions. [2024-06-27 23:30:45,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 209 transitions, 2674 flow [2024-06-27 23:30:45,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:30:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:30:45,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 23:30:45,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-27 23:30:45,370 INFO L175 Difference]: Start difference. First operand has 211 places, 189 transitions, 2006 flow. Second operand 9 states and 118 transitions. [2024-06-27 23:30:45,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 209 transitions, 2674 flow [2024-06-27 23:30:45,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 209 transitions, 2580 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:30:45,501 INFO L231 Difference]: Finished difference. Result has 214 places, 195 transitions, 2147 flow [2024-06-27 23:30:45,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2147, PETRI_PLACES=214, PETRI_TRANSITIONS=195} [2024-06-27 23:30:45,501 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places. [2024-06-27 23:30:45,502 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 195 transitions, 2147 flow [2024-06-27 23:30:45,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:45,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:45,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:45,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:30:45,502 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:45,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:45,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1056928810, now seen corresponding path program 6 times [2024-06-27 23:30:45,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:45,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944174626] [2024-06-27 23:30:45,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:45,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:46,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:46,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944174626] [2024-06-27 23:30:46,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944174626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:46,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:46,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:46,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845578534] [2024-06-27 23:30:46,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:46,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:46,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:46,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:46,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:46,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:46,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 195 transitions, 2147 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:46,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:46,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:46,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:47,304 INFO L124 PetriNetUnfolderBase]: 498/885 cut-off events. [2024-06-27 23:30:47,305 INFO L125 PetriNetUnfolderBase]: For 58253/58253 co-relation queries the response was YES. [2024-06-27 23:30:47,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6376 conditions, 885 events. 498/885 cut-off events. For 58253/58253 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4284 event pairs, 92 based on Foata normal form. 2/886 useless extension candidates. Maximal degree in co-relation 6273. Up to 726 conditions per place. [2024-06-27 23:30:47,312 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 158 selfloop transitions, 52 changer transitions 0/212 dead transitions. [2024-06-27 23:30:47,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 212 transitions, 2779 flow [2024-06-27 23:30:47,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 23:30:47,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-27 23:30:47,331 INFO L175 Difference]: Start difference. First operand has 214 places, 195 transitions, 2147 flow. Second operand 10 states and 119 transitions. [2024-06-27 23:30:47,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 212 transitions, 2779 flow [2024-06-27 23:30:47,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 212 transitions, 2691 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 23:30:47,476 INFO L231 Difference]: Finished difference. Result has 219 places, 197 transitions, 2210 flow [2024-06-27 23:30:47,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2059, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2210, PETRI_PLACES=219, PETRI_TRANSITIONS=197} [2024-06-27 23:30:47,476 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-27 23:30:47,476 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 197 transitions, 2210 flow [2024-06-27 23:30:47,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:47,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:47,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:47,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:30:47,477 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:47,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:47,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1062285455, now seen corresponding path program 9 times [2024-06-27 23:30:47,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:47,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482121112] [2024-06-27 23:30:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:47,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:48,758 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 23:30:48,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:48,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482121112] [2024-06-27 23:30:48,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482121112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:48,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:48,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:30:48,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398967853] [2024-06-27 23:30:48,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:48,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:30:48,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:48,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:30:48,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:30:48,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:48,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 197 transitions, 2210 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:48,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:48,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:48,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:49,200 INFO L124 PetriNetUnfolderBase]: 502/893 cut-off events. [2024-06-27 23:30:49,200 INFO L125 PetriNetUnfolderBase]: For 60140/60140 co-relation queries the response was YES. [2024-06-27 23:30:49,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6518 conditions, 893 events. 502/893 cut-off events. For 60140/60140 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4342 event pairs, 103 based on Foata normal form. 2/894 useless extension candidates. Maximal degree in co-relation 6413. Up to 819 conditions per place. [2024-06-27 23:30:49,207 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 177 selfloop transitions, 30 changer transitions 0/209 dead transitions. [2024-06-27 23:30:49,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 209 transitions, 2666 flow [2024-06-27 23:30:49,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:30:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:30:49,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 23:30:49,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-27 23:30:49,209 INFO L175 Difference]: Start difference. First operand has 219 places, 197 transitions, 2210 flow. Second operand 11 states and 119 transitions. [2024-06-27 23:30:49,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 209 transitions, 2666 flow [2024-06-27 23:30:49,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 209 transitions, 2535 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:49,343 INFO L231 Difference]: Finished difference. Result has 222 places, 198 transitions, 2161 flow [2024-06-27 23:30:49,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2079, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2161, PETRI_PLACES=222, PETRI_TRANSITIONS=198} [2024-06-27 23:30:49,344 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2024-06-27 23:30:49,344 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 198 transitions, 2161 flow [2024-06-27 23:30:49,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:49,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:49,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:49,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:30:49,344 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:49,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:49,345 INFO L85 PathProgramCache]: Analyzing trace with hash 576798424, now seen corresponding path program 7 times [2024-06-27 23:30:49,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:49,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136510661] [2024-06-27 23:30:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:49,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:50,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:50,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136510661] [2024-06-27 23:30:50,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136510661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:50,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:50,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:50,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805581892] [2024-06-27 23:30:50,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:50,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:50,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:50,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:50,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:50,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:50,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 198 transitions, 2161 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:50,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:50,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:50,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:51,460 INFO L124 PetriNetUnfolderBase]: 508/903 cut-off events. [2024-06-27 23:30:51,460 INFO L125 PetriNetUnfolderBase]: For 62067/62067 co-relation queries the response was YES. [2024-06-27 23:30:51,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6532 conditions, 903 events. 508/903 cut-off events. For 62067/62067 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4392 event pairs, 96 based on Foata normal form. 2/904 useless extension candidates. Maximal degree in co-relation 6426. Up to 744 conditions per place. [2024-06-27 23:30:51,466 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 170 selfloop transitions, 46 changer transitions 0/218 dead transitions. [2024-06-27 23:30:51,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 218 transitions, 2821 flow [2024-06-27 23:30:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:30:51,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:30:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-27 23:30:51,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37435897435897436 [2024-06-27 23:30:51,468 INFO L175 Difference]: Start difference. First operand has 222 places, 198 transitions, 2161 flow. Second operand 13 states and 146 transitions. [2024-06-27 23:30:51,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 218 transitions, 2821 flow [2024-06-27 23:30:51,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 218 transitions, 2751 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 23:30:51,609 INFO L231 Difference]: Finished difference. Result has 226 places, 200 transitions, 2234 flow [2024-06-27 23:30:51,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2234, PETRI_PLACES=226, PETRI_TRANSITIONS=200} [2024-06-27 23:30:51,610 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 197 predicate places. [2024-06-27 23:30:51,610 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 200 transitions, 2234 flow [2024-06-27 23:30:51,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:51,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:51,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:51,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:30:51,611 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:51,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:51,611 INFO L85 PathProgramCache]: Analyzing trace with hash 571228499, now seen corresponding path program 10 times [2024-06-27 23:30:51,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:51,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144258191] [2024-06-27 23:30:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:51,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:53,118 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 23:30:53,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:53,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144258191] [2024-06-27 23:30:53,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144258191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:53,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:53,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:53,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691042566] [2024-06-27 23:30:53,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:53,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:53,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:53,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:53,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:53,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:53,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 200 transitions, 2234 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:53,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:53,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:53,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:53,532 INFO L124 PetriNetUnfolderBase]: 512/911 cut-off events. [2024-06-27 23:30:53,532 INFO L125 PetriNetUnfolderBase]: For 64097/64097 co-relation queries the response was YES. [2024-06-27 23:30:53,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6654 conditions, 911 events. 512/911 cut-off events. For 64097/64097 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4446 event pairs, 105 based on Foata normal form. 2/912 useless extension candidates. Maximal degree in co-relation 6547. Up to 837 conditions per place. [2024-06-27 23:30:53,540 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 177 selfloop transitions, 33 changer transitions 0/212 dead transitions. [2024-06-27 23:30:53,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 212 transitions, 2700 flow [2024-06-27 23:30:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:53,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 23:30:53,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2024-06-27 23:30:53,541 INFO L175 Difference]: Start difference. First operand has 226 places, 200 transitions, 2234 flow. Second operand 10 states and 111 transitions. [2024-06-27 23:30:53,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 212 transitions, 2700 flow [2024-06-27 23:30:53,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 212 transitions, 2577 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-27 23:30:53,679 INFO L231 Difference]: Finished difference. Result has 225 places, 201 transitions, 2201 flow [2024-06-27 23:30:53,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2201, PETRI_PLACES=225, PETRI_TRANSITIONS=201} [2024-06-27 23:30:53,680 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 196 predicate places. [2024-06-27 23:30:53,680 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 201 transitions, 2201 flow [2024-06-27 23:30:53,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:53,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:53,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:53,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:30:53,681 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:53,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:53,681 INFO L85 PathProgramCache]: Analyzing trace with hash 576591034, now seen corresponding path program 8 times [2024-06-27 23:30:53,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:53,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434210414] [2024-06-27 23:30:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:53,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:55,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:55,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:55,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434210414] [2024-06-27 23:30:55,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434210414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:55,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:55,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:55,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174571050] [2024-06-27 23:30:55,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:55,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:55,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:55,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:55,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:55,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 201 transitions, 2201 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:55,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:55,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:55,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:55,499 INFO L124 PetriNetUnfolderBase]: 528/937 cut-off events. [2024-06-27 23:30:55,500 INFO L125 PetriNetUnfolderBase]: For 70385/70385 co-relation queries the response was YES. [2024-06-27 23:30:55,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6941 conditions, 937 events. 528/937 cut-off events. For 70385/70385 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4600 event pairs, 94 based on Foata normal form. 2/938 useless extension candidates. Maximal degree in co-relation 6833. Up to 749 conditions per place. [2024-06-27 23:30:55,508 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 166 selfloop transitions, 54 changer transitions 0/222 dead transitions. [2024-06-27 23:30:55,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 222 transitions, 3045 flow [2024-06-27 23:30:55,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:30:55,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:30:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:30:55,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:30:55,509 INFO L175 Difference]: Start difference. First operand has 225 places, 201 transitions, 2201 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:30:55,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 222 transitions, 3045 flow [2024-06-27 23:30:55,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 222 transitions, 2967 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:55,652 INFO L231 Difference]: Finished difference. Result has 229 places, 205 transitions, 2339 flow [2024-06-27 23:30:55,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2123, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2339, PETRI_PLACES=229, PETRI_TRANSITIONS=205} [2024-06-27 23:30:55,652 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 200 predicate places. [2024-06-27 23:30:55,653 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 205 transitions, 2339 flow [2024-06-27 23:30:55,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:55,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:55,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:55,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:30:55,653 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:55,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash 576806360, now seen corresponding path program 1 times [2024-06-27 23:30:55,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:55,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10222414] [2024-06-27 23:30:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:55,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:57,234 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 23:30:57,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:57,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10222414] [2024-06-27 23:30:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10222414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:57,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:57,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:30:57,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950043205] [2024-06-27 23:30:57,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:57,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:30:57,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:57,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:30:57,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:30:57,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:57,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 205 transitions, 2339 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:57,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:57,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:57,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:30:57,783 INFO L124 PetriNetUnfolderBase]: 536/953 cut-off events. [2024-06-27 23:30:57,783 INFO L125 PetriNetUnfolderBase]: For 77310/77310 co-relation queries the response was YES. [2024-06-27 23:30:57,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7150 conditions, 953 events. 536/953 cut-off events. For 77310/77310 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4730 event pairs, 95 based on Foata normal form. 4/956 useless extension candidates. Maximal degree in co-relation 7040. Up to 790 conditions per place. [2024-06-27 23:30:57,791 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 173 selfloop transitions, 45 changer transitions 0/220 dead transitions. [2024-06-27 23:30:57,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 220 transitions, 2979 flow [2024-06-27 23:30:57,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:30:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:30:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 23:30:57,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-27 23:30:57,793 INFO L175 Difference]: Start difference. First operand has 229 places, 205 transitions, 2339 flow. Second operand 10 states and 117 transitions. [2024-06-27 23:30:57,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 220 transitions, 2979 flow [2024-06-27 23:30:57,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 220 transitions, 2857 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:30:57,950 INFO L231 Difference]: Finished difference. Result has 231 places, 207 transitions, 2350 flow [2024-06-27 23:30:57,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2217, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2350, PETRI_PLACES=231, PETRI_TRANSITIONS=207} [2024-06-27 23:30:57,954 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 202 predicate places. [2024-06-27 23:30:57,954 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 207 transitions, 2350 flow [2024-06-27 23:30:57,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:57,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:30:57,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:30:57,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:30:57,955 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:30:57,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:30:57,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1062291190, now seen corresponding path program 9 times [2024-06-27 23:30:57,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:30:57,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672644561] [2024-06-27 23:30:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:30:57,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:30:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:30:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:30:59,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:30:59,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672644561] [2024-06-27 23:30:59,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672644561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:30:59,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:30:59,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:30:59,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918911479] [2024-06-27 23:30:59,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:30:59,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:30:59,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:30:59,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:30:59,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:30:59,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:30:59,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 207 transitions, 2350 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:30:59,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:30:59,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:30:59,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:00,024 INFO L124 PetriNetUnfolderBase]: 532/947 cut-off events. [2024-06-27 23:31:00,024 INFO L125 PetriNetUnfolderBase]: For 70422/70422 co-relation queries the response was YES. [2024-06-27 23:31:00,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6972 conditions, 947 events. 532/947 cut-off events. For 70422/70422 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4698 event pairs, 95 based on Foata normal form. 2/948 useless extension candidates. Maximal degree in co-relation 6861. Up to 788 conditions per place. [2024-06-27 23:31:00,032 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 176 selfloop transitions, 45 changer transitions 0/223 dead transitions. [2024-06-27 23:31:00,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 223 transitions, 2982 flow [2024-06-27 23:31:00,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:31:00,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:31:00,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:31:00,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:31:00,033 INFO L175 Difference]: Start difference. First operand has 231 places, 207 transitions, 2350 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:31:00,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 223 transitions, 2982 flow [2024-06-27 23:31:00,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 223 transitions, 2841 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:00,182 INFO L231 Difference]: Finished difference. Result has 234 places, 207 transitions, 2304 flow [2024-06-27 23:31:00,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2304, PETRI_PLACES=234, PETRI_TRANSITIONS=207} [2024-06-27 23:31:00,183 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 205 predicate places. [2024-06-27 23:31:00,183 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 207 transitions, 2304 flow [2024-06-27 23:31:00,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:00,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:00,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:00,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:31:00,183 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 23:31:00,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1056923230, now seen corresponding path program 10 times [2024-06-27 23:31:00,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:00,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642976664] [2024-06-27 23:31:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:00,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:01,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642976664] [2024-06-27 23:31:01,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642976664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:01,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:01,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:01,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335265573] [2024-06-27 23:31:01,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:01,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:01,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:01,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:01,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:01,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:01,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 207 transitions, 2304 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:01,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:01,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:01,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:02,198 INFO L124 PetriNetUnfolderBase]: 538/957 cut-off events. [2024-06-27 23:31:02,198 INFO L125 PetriNetUnfolderBase]: For 72233/72233 co-relation queries the response was YES. [2024-06-27 23:31:02,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6999 conditions, 957 events. 538/957 cut-off events. For 72233/72233 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 4750 event pairs, 108 based on Foata normal form. 2/958 useless extension candidates. Maximal degree in co-relation 6887. Up to 874 conditions per place. [2024-06-27 23:31:02,206 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 179 selfloop transitions, 39 changer transitions 0/220 dead transitions. [2024-06-27 23:31:02,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 220 transitions, 2816 flow [2024-06-27 23:31:02,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:31:02,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:31:02,207 INFO L175 Difference]: Start difference. First operand has 234 places, 207 transitions, 2304 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:31:02,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 220 transitions, 2816 flow [2024-06-27 23:31:02,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 220 transitions, 2706 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 23:31:02,367 INFO L231 Difference]: Finished difference. Result has 234 places, 209 transitions, 2325 flow [2024-06-27 23:31:02,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2325, PETRI_PLACES=234, PETRI_TRANSITIONS=209} [2024-06-27 23:31:02,368 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 205 predicate places. [2024-06-27 23:31:02,368 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 209 transitions, 2325 flow [2024-06-27 23:31:02,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:02,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:02,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:02,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:31:02,368 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 23:31:02,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:02,369 INFO L85 PathProgramCache]: Analyzing trace with hash 290408250, now seen corresponding path program 2 times [2024-06-27 23:31:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:02,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808923423] [2024-06-27 23:31:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:02,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:03,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:03,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808923423] [2024-06-27 23:31:03,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808923423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:03,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:03,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:03,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735369701] [2024-06-27 23:31:03,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:03,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:03,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:03,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:03,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:03,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:03,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 209 transitions, 2325 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:03,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:03,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:03,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:04,202 INFO L124 PetriNetUnfolderBase]: 542/964 cut-off events. [2024-06-27 23:31:04,203 INFO L125 PetriNetUnfolderBase]: For 74450/74450 co-relation queries the response was YES. [2024-06-27 23:31:04,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7047 conditions, 964 events. 542/964 cut-off events. For 74450/74450 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 4801 event pairs, 101 based on Foata normal form. 2/965 useless extension candidates. Maximal degree in co-relation 6934. Up to 912 conditions per place. [2024-06-27 23:31:04,211 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 196 selfloop transitions, 23 changer transitions 0/221 dead transitions. [2024-06-27 23:31:04,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 221 transitions, 2821 flow [2024-06-27 23:31:04,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:04,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 23:31:04,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-27 23:31:04,212 INFO L175 Difference]: Start difference. First operand has 234 places, 209 transitions, 2325 flow. Second operand 10 states and 108 transitions. [2024-06-27 23:31:04,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 221 transitions, 2821 flow [2024-06-27 23:31:04,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 221 transitions, 2712 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:04,366 INFO L231 Difference]: Finished difference. Result has 236 places, 210 transitions, 2294 flow [2024-06-27 23:31:04,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2294, PETRI_PLACES=236, PETRI_TRANSITIONS=210} [2024-06-27 23:31:04,367 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 207 predicate places. [2024-06-27 23:31:04,367 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 210 transitions, 2294 flow [2024-06-27 23:31:04,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:04,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:04,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:04,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:31:04,367 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 23:31:04,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1545707456, now seen corresponding path program 11 times [2024-06-27 23:31:04,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:04,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644080245] [2024-06-27 23:31:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:05,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:05,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644080245] [2024-06-27 23:31:05,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644080245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:05,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:05,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:05,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948508803] [2024-06-27 23:31:05,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:05,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:05,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:05,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:05,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:06,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:06,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 210 transitions, 2294 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:06,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:06,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:06,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:06,581 INFO L124 PetriNetUnfolderBase]: 548/974 cut-off events. [2024-06-27 23:31:06,581 INFO L125 PetriNetUnfolderBase]: For 76552/76552 co-relation queries the response was YES. [2024-06-27 23:31:06,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7104 conditions, 974 events. 548/974 cut-off events. For 76552/76552 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4855 event pairs, 105 based on Foata normal form. 2/975 useless extension candidates. Maximal degree in co-relation 6990. Up to 931 conditions per place. [2024-06-27 23:31:06,590 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 196 selfloop transitions, 24 changer transitions 0/222 dead transitions. [2024-06-27 23:31:06,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 222 transitions, 2808 flow [2024-06-27 23:31:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:06,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 23:31:06,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:31:06,591 INFO L175 Difference]: Start difference. First operand has 236 places, 210 transitions, 2294 flow. Second operand 10 states and 110 transitions. [2024-06-27 23:31:06,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 222 transitions, 2808 flow [2024-06-27 23:31:06,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 222 transitions, 2740 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:06,759 INFO L231 Difference]: Finished difference. Result has 238 places, 212 transitions, 2331 flow [2024-06-27 23:31:06,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2226, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2331, PETRI_PLACES=238, PETRI_TRANSITIONS=212} [2024-06-27 23:31:06,759 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 209 predicate places. [2024-06-27 23:31:06,759 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 212 transitions, 2331 flow [2024-06-27 23:31:06,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:06,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:06,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:06,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:31:06,760 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 23:31:06,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:06,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1545500066, now seen corresponding path program 12 times [2024-06-27 23:31:06,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:06,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455420313] [2024-06-27 23:31:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:06,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:08,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:08,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455420313] [2024-06-27 23:31:08,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455420313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:08,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:08,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:08,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534299303] [2024-06-27 23:31:08,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:08,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:08,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:08,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:08,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:08,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:08,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 212 transitions, 2331 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:08,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:08,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:08,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:08,833 INFO L124 PetriNetUnfolderBase]: 560/994 cut-off events. [2024-06-27 23:31:08,833 INFO L125 PetriNetUnfolderBase]: For 78798/78798 co-relation queries the response was YES. [2024-06-27 23:31:08,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7244 conditions, 994 events. 560/994 cut-off events. For 78798/78798 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 4971 event pairs, 99 based on Foata normal form. 2/995 useless extension candidates. Maximal degree in co-relation 7129. Up to 923 conditions per place. [2024-06-27 23:31:08,842 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 200 selfloop transitions, 30 changer transitions 0/232 dead transitions. [2024-06-27 23:31:08,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 232 transitions, 2911 flow [2024-06-27 23:31:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:31:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:31:08,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 138 transitions. [2024-06-27 23:31:08,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35384615384615387 [2024-06-27 23:31:08,844 INFO L175 Difference]: Start difference. First operand has 238 places, 212 transitions, 2331 flow. Second operand 13 states and 138 transitions. [2024-06-27 23:31:08,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 232 transitions, 2911 flow [2024-06-27 23:31:09,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 232 transitions, 2832 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:09,021 INFO L231 Difference]: Finished difference. Result has 243 places, 216 transitions, 2387 flow [2024-06-27 23:31:09,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2252, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2387, PETRI_PLACES=243, PETRI_TRANSITIONS=216} [2024-06-27 23:31:09,021 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 214 predicate places. [2024-06-27 23:31:09,021 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 216 transitions, 2387 flow [2024-06-27 23:31:09,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:09,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:09,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:09,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:31:09,022 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:09,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:09,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1545707611, now seen corresponding path program 11 times [2024-06-27 23:31:09,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:09,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332995273] [2024-06-27 23:31:09,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:09,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:10,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:10,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:10,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332995273] [2024-06-27 23:31:10,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332995273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:10,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:10,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:31:10,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562551589] [2024-06-27 23:31:10,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:10,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:31:10,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:10,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:31:10,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:31:10,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:10,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 216 transitions, 2387 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:10,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:10,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:10,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:11,117 INFO L124 PetriNetUnfolderBase]: 564/1002 cut-off events. [2024-06-27 23:31:11,118 INFO L125 PetriNetUnfolderBase]: For 80846/80846 co-relation queries the response was YES. [2024-06-27 23:31:11,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7312 conditions, 1002 events. 564/1002 cut-off events. For 80846/80846 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5033 event pairs, 107 based on Foata normal form. 2/1003 useless extension candidates. Maximal degree in co-relation 7196. Up to 959 conditions per place. [2024-06-27 23:31:11,126 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 202 selfloop transitions, 23 changer transitions 0/227 dead transitions. [2024-06-27 23:31:11,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 227 transitions, 2879 flow [2024-06-27 23:31:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:31:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:31:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 23:31:11,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-27 23:31:11,128 INFO L175 Difference]: Start difference. First operand has 243 places, 216 transitions, 2387 flow. Second operand 11 states and 115 transitions. [2024-06-27 23:31:11,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 227 transitions, 2879 flow [2024-06-27 23:31:11,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 227 transitions, 2775 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 23:31:11,310 INFO L231 Difference]: Finished difference. Result has 244 places, 217 transitions, 2355 flow [2024-06-27 23:31:11,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2355, PETRI_PLACES=244, PETRI_TRANSITIONS=217} [2024-06-27 23:31:11,311 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 215 predicate places. [2024-06-27 23:31:11,311 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 217 transitions, 2355 flow [2024-06-27 23:31:11,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:11,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:11,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:11,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:31:11,311 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:11,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:11,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1013097850, now seen corresponding path program 13 times [2024-06-27 23:31:11,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:11,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677672948] [2024-06-27 23:31:11,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:11,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:12,765 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 23:31:12,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:12,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677672948] [2024-06-27 23:31:12,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677672948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:12,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:12,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:12,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328982568] [2024-06-27 23:31:12,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:12,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:12,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:12,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:12,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:12,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:12,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 217 transitions, 2355 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:12,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:12,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:12,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:13,353 INFO L124 PetriNetUnfolderBase]: 570/1012 cut-off events. [2024-06-27 23:31:13,353 INFO L125 PetriNetUnfolderBase]: For 83045/83045 co-relation queries the response was YES. [2024-06-27 23:31:13,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7361 conditions, 1012 events. 570/1012 cut-off events. For 83045/83045 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5110 event pairs, 101 based on Foata normal form. 2/1013 useless extension candidates. Maximal degree in co-relation 7244. Up to 941 conditions per place. [2024-06-27 23:31:13,363 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 202 selfloop transitions, 29 changer transitions 0/233 dead transitions. [2024-06-27 23:31:13,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 233 transitions, 2921 flow [2024-06-27 23:31:13,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:31:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:31:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:31:13,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-27 23:31:13,364 INFO L175 Difference]: Start difference. First operand has 244 places, 217 transitions, 2355 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:31:13,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 233 transitions, 2921 flow [2024-06-27 23:31:13,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 233 transitions, 2861 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 23:31:13,568 INFO L231 Difference]: Finished difference. Result has 246 places, 219 transitions, 2416 flow [2024-06-27 23:31:13,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2416, PETRI_PLACES=246, PETRI_TRANSITIONS=219} [2024-06-27 23:31:13,569 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2024-06-27 23:31:13,569 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 219 transitions, 2416 flow [2024-06-27 23:31:13,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:13,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:13,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:13,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:31:13,569 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:13,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:13,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1224266478, now seen corresponding path program 14 times [2024-06-27 23:31:13,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:13,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67730813] [2024-06-27 23:31:13,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:13,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:15,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:15,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:15,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67730813] [2024-06-27 23:31:15,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67730813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:15,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:15,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:31:15,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052979529] [2024-06-27 23:31:15,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:15,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:31:15,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:15,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:31:15,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:31:15,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:15,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 219 transitions, 2416 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:15,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:15,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:15,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:15,491 INFO L124 PetriNetUnfolderBase]: 576/1022 cut-off events. [2024-06-27 23:31:15,503 INFO L125 PetriNetUnfolderBase]: For 85604/85604 co-relation queries the response was YES. [2024-06-27 23:31:15,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7499 conditions, 1022 events. 576/1022 cut-off events. For 85604/85604 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5164 event pairs, 109 based on Foata normal form. 2/1023 useless extension candidates. Maximal degree in co-relation 7381. Up to 977 conditions per place. [2024-06-27 23:31:15,514 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 207 selfloop transitions, 23 changer transitions 0/232 dead transitions. [2024-06-27 23:31:15,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 232 transitions, 2966 flow [2024-06-27 23:31:15,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:31:15,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:31:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 23:31:15,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-27 23:31:15,515 INFO L175 Difference]: Start difference. First operand has 246 places, 219 transitions, 2416 flow. Second operand 11 states and 116 transitions. [2024-06-27 23:31:15,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 232 transitions, 2966 flow [2024-06-27 23:31:15,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 232 transitions, 2865 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 23:31:15,702 INFO L231 Difference]: Finished difference. Result has 248 places, 221 transitions, 2428 flow [2024-06-27 23:31:15,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2428, PETRI_PLACES=248, PETRI_TRANSITIONS=221} [2024-06-27 23:31:15,703 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 219 predicate places. [2024-06-27 23:31:15,703 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 221 transitions, 2428 flow [2024-06-27 23:31:15,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:15,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:15,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:15,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:31:15,703 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:15,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:15,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1757080250, now seen corresponding path program 3 times [2024-06-27 23:31:15,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:15,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572308190] [2024-06-27 23:31:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:15,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:17,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:17,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572308190] [2024-06-27 23:31:17,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572308190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:17,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:17,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:31:17,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097548730] [2024-06-27 23:31:17,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:17,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:31:17,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:17,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:31:17,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:31:17,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:17,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 221 transitions, 2428 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:17,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:17,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:17,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:17,818 INFO L124 PetriNetUnfolderBase]: 580/1030 cut-off events. [2024-06-27 23:31:17,818 INFO L125 PetriNetUnfolderBase]: For 87908/87908 co-relation queries the response was YES. [2024-06-27 23:31:17,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7529 conditions, 1030 events. 580/1030 cut-off events. For 87908/87908 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5228 event pairs, 109 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 7410. Up to 990 conditions per place. [2024-06-27 23:31:17,827 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 211 selfloop transitions, 19 changer transitions 0/232 dead transitions. [2024-06-27 23:31:17,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 232 transitions, 2942 flow [2024-06-27 23:31:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:17,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 23:31:17,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35333333333333333 [2024-06-27 23:31:17,829 INFO L175 Difference]: Start difference. First operand has 248 places, 221 transitions, 2428 flow. Second operand 10 states and 106 transitions. [2024-06-27 23:31:17,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 232 transitions, 2942 flow [2024-06-27 23:31:18,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 232 transitions, 2834 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 23:31:18,006 INFO L231 Difference]: Finished difference. Result has 249 places, 222 transitions, 2392 flow [2024-06-27 23:31:18,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2392, PETRI_PLACES=249, PETRI_TRANSITIONS=222} [2024-06-27 23:31:18,007 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 220 predicate places. [2024-06-27 23:31:18,007 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 222 transitions, 2392 flow [2024-06-27 23:31:18,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:18,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:18,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:18,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:31:18,008 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:18,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:18,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1224260898, now seen corresponding path program 15 times [2024-06-27 23:31:18,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:18,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593699533] [2024-06-27 23:31:18,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:18,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593699533] [2024-06-27 23:31:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593699533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:19,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:19,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:31:19,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570599001] [2024-06-27 23:31:19,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:19,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:31:19,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:31:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:31:19,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:19,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 222 transitions, 2392 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:19,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:19,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:19,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:20,243 INFO L124 PetriNetUnfolderBase]: 576/1024 cut-off events. [2024-06-27 23:31:20,243 INFO L125 PetriNetUnfolderBase]: For 84021/84021 co-relation queries the response was YES. [2024-06-27 23:31:20,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7274 conditions, 1024 events. 576/1024 cut-off events. For 84021/84021 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5196 event pairs, 110 based on Foata normal form. 2/1025 useless extension candidates. Maximal degree in co-relation 7154. Up to 962 conditions per place. [2024-06-27 23:31:20,253 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 200 selfloop transitions, 32 changer transitions 0/234 dead transitions. [2024-06-27 23:31:20,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 234 transitions, 3042 flow [2024-06-27 23:31:20,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:31:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:31:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:31:20,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:31:20,254 INFO L175 Difference]: Start difference. First operand has 249 places, 222 transitions, 2392 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:31:20,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 234 transitions, 3042 flow [2024-06-27 23:31:20,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 234 transitions, 2980 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:20,431 INFO L231 Difference]: Finished difference. Result has 252 places, 222 transitions, 2399 flow [2024-06-27 23:31:20,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2399, PETRI_PLACES=252, PETRI_TRANSITIONS=222} [2024-06-27 23:31:20,431 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 223 predicate places. [2024-06-27 23:31:20,431 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 222 transitions, 2399 flow [2024-06-27 23:31:20,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:20,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:20,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:20,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:31:20,432 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:20,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1224260743, now seen corresponding path program 12 times [2024-06-27 23:31:20,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:20,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074617027] [2024-06-27 23:31:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:20,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:21,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:21,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:21,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074617027] [2024-06-27 23:31:21,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074617027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:21,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:21,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:31:21,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409081060] [2024-06-27 23:31:21,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:21,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:31:21,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:21,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:31:21,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:31:21,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:21,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 222 transitions, 2399 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:21,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:21,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:21,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:22,263 INFO L124 PetriNetUnfolderBase]: 573/1019 cut-off events. [2024-06-27 23:31:22,264 INFO L125 PetriNetUnfolderBase]: For 79835/79835 co-relation queries the response was YES. [2024-06-27 23:31:22,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7104 conditions, 1019 events. 573/1019 cut-off events. For 79835/79835 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5177 event pairs, 111 based on Foata normal form. 2/1020 useless extension candidates. Maximal degree in co-relation 6983. Up to 988 conditions per place. [2024-06-27 23:31:22,274 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 213 selfloop transitions, 17 changer transitions 0/232 dead transitions. [2024-06-27 23:31:22,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 232 transitions, 2881 flow [2024-06-27 23:31:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:31:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:31:22,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 23:31:22,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-27 23:31:22,275 INFO L175 Difference]: Start difference. First operand has 252 places, 222 transitions, 2399 flow. Second operand 11 states and 111 transitions. [2024-06-27 23:31:22,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 232 transitions, 2881 flow [2024-06-27 23:31:22,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 232 transitions, 2755 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 23:31:22,487 INFO L231 Difference]: Finished difference. Result has 254 places, 222 transitions, 2311 flow [2024-06-27 23:31:22,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2311, PETRI_PLACES=254, PETRI_TRANSITIONS=222} [2024-06-27 23:31:22,487 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 225 predicate places. [2024-06-27 23:31:22,487 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 222 transitions, 2311 flow [2024-06-27 23:31:22,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:22,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:22,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:22,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:31:22,488 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:22,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:22,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1107491146, now seen corresponding path program 16 times [2024-06-27 23:31:22,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:22,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375673839] [2024-06-27 23:31:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:22,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:23,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:23,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375673839] [2024-06-27 23:31:23,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375673839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:23,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:23,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:23,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122052253] [2024-06-27 23:31:23,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:23,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:23,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:24,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:24,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 222 transitions, 2311 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:24,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:24,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:24,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:24,458 INFO L124 PetriNetUnfolderBase]: 574/1021 cut-off events. [2024-06-27 23:31:24,459 INFO L125 PetriNetUnfolderBase]: For 78486/78486 co-relation queries the response was YES. [2024-06-27 23:31:24,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6979 conditions, 1021 events. 574/1021 cut-off events. For 78486/78486 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5195 event pairs, 104 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 6857. Up to 953 conditions per place. [2024-06-27 23:31:24,466 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 209 selfloop transitions, 26 changer transitions 0/237 dead transitions. [2024-06-27 23:31:24,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 237 transitions, 3039 flow [2024-06-27 23:31:24,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 23:31:24,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2024-06-27 23:31:24,467 INFO L175 Difference]: Start difference. First operand has 254 places, 222 transitions, 2311 flow. Second operand 10 states and 114 transitions. [2024-06-27 23:31:24,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 237 transitions, 3039 flow [2024-06-27 23:31:24,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 237 transitions, 2999 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:31:24,665 INFO L231 Difference]: Finished difference. Result has 255 places, 224 transitions, 2394 flow [2024-06-27 23:31:24,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2271, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2394, PETRI_PLACES=255, PETRI_TRANSITIONS=224} [2024-06-27 23:31:24,666 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 226 predicate places. [2024-06-27 23:31:24,666 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 224 transitions, 2394 flow [2024-06-27 23:31:24,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:24,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:24,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:24,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:31:24,667 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:24,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:24,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1490499934, now seen corresponding path program 4 times [2024-06-27 23:31:24,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:24,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445442734] [2024-06-27 23:31:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:24,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:25,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:25,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445442734] [2024-06-27 23:31:25,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445442734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:25,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:25,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:25,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187390209] [2024-06-27 23:31:25,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:25,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:25,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:25,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:25,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:26,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:26,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 224 transitions, 2394 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:26,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:26,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:26,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:26,329 INFO L124 PetriNetUnfolderBase]: 578/1029 cut-off events. [2024-06-27 23:31:26,329 INFO L125 PetriNetUnfolderBase]: For 80987/80987 co-relation queries the response was YES. [2024-06-27 23:31:26,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7099 conditions, 1029 events. 578/1029 cut-off events. For 80987/80987 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5260 event pairs, 109 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 6976. Up to 993 conditions per place. [2024-06-27 23:31:26,338 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 218 selfloop transitions, 15 changer transitions 0/235 dead transitions. [2024-06-27 23:31:26,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 235 transitions, 2912 flow [2024-06-27 23:31:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 23:31:26,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2024-06-27 23:31:26,340 INFO L175 Difference]: Start difference. First operand has 255 places, 224 transitions, 2394 flow. Second operand 10 states and 102 transitions. [2024-06-27 23:31:26,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 235 transitions, 2912 flow [2024-06-27 23:31:26,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 235 transitions, 2809 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:26,549 INFO L231 Difference]: Finished difference. Result has 257 places, 225 transitions, 2357 flow [2024-06-27 23:31:26,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2357, PETRI_PLACES=257, PETRI_TRANSITIONS=225} [2024-06-27 23:31:26,549 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 228 predicate places. [2024-06-27 23:31:26,550 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 225 transitions, 2357 flow [2024-06-27 23:31:26,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:26,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:26,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:26,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:31:26,550 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:26,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:26,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2013573041, now seen corresponding path program 1 times [2024-06-27 23:31:26,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:26,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973725949] [2024-06-27 23:31:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:26,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:27,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:27,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973725949] [2024-06-27 23:31:27,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973725949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:27,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:27,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:27,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590274953] [2024-06-27 23:31:27,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:27,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:27,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:27,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:27,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:27,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 225 transitions, 2357 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:27,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:27,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:27,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:28,313 INFO L124 PetriNetUnfolderBase]: 576/1026 cut-off events. [2024-06-27 23:31:28,313 INFO L125 PetriNetUnfolderBase]: For 76108/76108 co-relation queries the response was YES. [2024-06-27 23:31:28,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6931 conditions, 1026 events. 576/1026 cut-off events. For 76108/76108 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5237 event pairs, 110 based on Foata normal form. 1/1026 useless extension candidates. Maximal degree in co-relation 6807. Up to 984 conditions per place. [2024-06-27 23:31:28,323 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 208 selfloop transitions, 24 changer transitions 0/234 dead transitions. [2024-06-27 23:31:28,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 234 transitions, 2841 flow [2024-06-27 23:31:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:28,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:28,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 23:31:28,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-27 23:31:28,325 INFO L175 Difference]: Start difference. First operand has 257 places, 225 transitions, 2357 flow. Second operand 10 states and 107 transitions. [2024-06-27 23:31:28,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 234 transitions, 2841 flow [2024-06-27 23:31:28,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 234 transitions, 2777 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:28,544 INFO L231 Difference]: Finished difference. Result has 259 places, 225 transitions, 2351 flow [2024-06-27 23:31:28,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2351, PETRI_PLACES=259, PETRI_TRANSITIONS=225} [2024-06-27 23:31:28,544 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-27 23:31:28,545 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 225 transitions, 2351 flow [2024-06-27 23:31:28,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:28,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:28,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:28,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:31:28,545 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:28,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:28,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2013572824, now seen corresponding path program 17 times [2024-06-27 23:31:28,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:28,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686864016] [2024-06-27 23:31:28,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:28,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:29,756 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 23:31:29,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:29,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686864016] [2024-06-27 23:31:29,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686864016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:29,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:29,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:29,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850671263] [2024-06-27 23:31:29,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:29,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:29,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:29,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:29,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:29,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:29,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 225 transitions, 2351 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:29,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:29,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:29,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:30,264 INFO L124 PetriNetUnfolderBase]: 568/1014 cut-off events. [2024-06-27 23:31:30,264 INFO L125 PetriNetUnfolderBase]: For 74128/74128 co-relation queries the response was YES. [2024-06-27 23:31:30,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6507 conditions, 1014 events. 568/1014 cut-off events. For 74128/74128 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5184 event pairs, 109 based on Foata normal form. 4/1017 useless extension candidates. Maximal degree in co-relation 6382. Up to 960 conditions per place. [2024-06-27 23:31:30,274 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 204 selfloop transitions, 30 changer transitions 0/236 dead transitions. [2024-06-27 23:31:30,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 236 transitions, 2847 flow [2024-06-27 23:31:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:31:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:31:30,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-27 23:31:30,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-27 23:31:30,275 INFO L175 Difference]: Start difference. First operand has 259 places, 225 transitions, 2351 flow. Second operand 12 states and 123 transitions. [2024-06-27 23:31:30,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 236 transitions, 2847 flow [2024-06-27 23:31:30,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 236 transitions, 2783 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:30,474 INFO L231 Difference]: Finished difference. Result has 263 places, 225 transitions, 2358 flow [2024-06-27 23:31:30,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2358, PETRI_PLACES=263, PETRI_TRANSITIONS=225} [2024-06-27 23:31:30,474 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 234 predicate places. [2024-06-27 23:31:30,474 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 225 transitions, 2358 flow [2024-06-27 23:31:30,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:30,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:30,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:30,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:31:30,475 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:30,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:30,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2022777530, now seen corresponding path program 5 times [2024-06-27 23:31:30,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:30,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972477226] [2024-06-27 23:31:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:30,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:31,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:31,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972477226] [2024-06-27 23:31:31,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972477226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:31,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:31,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:31,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473906696] [2024-06-27 23:31:31,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:31,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:31,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:31,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:31,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 225 transitions, 2358 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:31,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:31,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:31,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:32,046 INFO L124 PetriNetUnfolderBase]: 572/1022 cut-off events. [2024-06-27 23:31:32,046 INFO L125 PetriNetUnfolderBase]: For 69759/69759 co-relation queries the response was YES. [2024-06-27 23:31:32,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6610 conditions, 1022 events. 572/1022 cut-off events. For 69759/69759 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5240 event pairs, 111 based on Foata normal form. 2/1023 useless extension candidates. Maximal degree in co-relation 6484. Up to 983 conditions per place. [2024-06-27 23:31:32,056 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 214 selfloop transitions, 19 changer transitions 0/235 dead transitions. [2024-06-27 23:31:32,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 235 transitions, 2876 flow [2024-06-27 23:31:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:32,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:32,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-27 23:31:32,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3466666666666667 [2024-06-27 23:31:32,057 INFO L175 Difference]: Start difference. First operand has 263 places, 225 transitions, 2358 flow. Second operand 10 states and 104 transitions. [2024-06-27 23:31:32,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 235 transitions, 2876 flow [2024-06-27 23:31:32,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 235 transitions, 2768 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-27 23:31:32,281 INFO L231 Difference]: Finished difference. Result has 262 places, 226 transitions, 2327 flow [2024-06-27 23:31:32,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2327, PETRI_PLACES=262, PETRI_TRANSITIONS=226} [2024-06-27 23:31:32,281 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 233 predicate places. [2024-06-27 23:31:32,281 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 226 transitions, 2327 flow [2024-06-27 23:31:32,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:32,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:32,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:32,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:31:32,282 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:32,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:32,282 INFO L85 PathProgramCache]: Analyzing trace with hash 224288357, now seen corresponding path program 13 times [2024-06-27 23:31:32,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:32,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919020231] [2024-06-27 23:31:32,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:32,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:33,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:33,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919020231] [2024-06-27 23:31:33,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919020231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:33,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:33,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:33,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676650834] [2024-06-27 23:31:33,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:33,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:33,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:33,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:33,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:33,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:33,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 226 transitions, 2327 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 23:31:33,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:33,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:33,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:34,138 INFO L124 PetriNetUnfolderBase]: 576/1030 cut-off events. [2024-06-27 23:31:34,138 INFO L125 PetriNetUnfolderBase]: For 71189/71189 co-relation queries the response was YES. [2024-06-27 23:31:34,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6584 conditions, 1030 events. 576/1030 cut-off events. For 71189/71189 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5285 event pairs, 54 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 6458. Up to 650 conditions per place. [2024-06-27 23:31:34,148 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 159 selfloop transitions, 83 changer transitions 0/244 dead transitions. [2024-06-27 23:31:34,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 244 transitions, 3029 flow [2024-06-27 23:31:34,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:34,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:31:34,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:31:34,149 INFO L175 Difference]: Start difference. First operand has 262 places, 226 transitions, 2327 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:31:34,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 244 transitions, 3029 flow [2024-06-27 23:31:34,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 244 transitions, 2964 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:34,352 INFO L231 Difference]: Finished difference. Result has 263 places, 227 transitions, 2442 flow [2024-06-27 23:31:34,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2442, PETRI_PLACES=263, PETRI_TRANSITIONS=227} [2024-06-27 23:31:34,353 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 234 predicate places. [2024-06-27 23:31:34,353 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 227 transitions, 2442 flow [2024-06-27 23:31:34,353 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 23:31:34,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:34,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:34,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:31:34,354 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:34,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:34,354 INFO L85 PathProgramCache]: Analyzing trace with hash 226166027, now seen corresponding path program 14 times [2024-06-27 23:31:34,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:34,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710490130] [2024-06-27 23:31:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:34,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:35,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:35,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710490130] [2024-06-27 23:31:35,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710490130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:35,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:35,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:35,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288313096] [2024-06-27 23:31:35,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:35,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:35,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:35,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:35,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:35,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:35,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 227 transitions, 2442 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 23:31:35,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:35,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:35,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:36,008 INFO L124 PetriNetUnfolderBase]: 580/1038 cut-off events. [2024-06-27 23:31:36,008 INFO L125 PetriNetUnfolderBase]: For 72533/72533 co-relation queries the response was YES. [2024-06-27 23:31:36,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6771 conditions, 1038 events. 580/1038 cut-off events. For 72533/72533 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5352 event pairs, 76 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 6644. Up to 845 conditions per place. [2024-06-27 23:31:36,018 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 169 selfloop transitions, 71 changer transitions 0/242 dead transitions. [2024-06-27 23:31:36,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 242 transitions, 2970 flow [2024-06-27 23:31:36,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:31:36,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:31:36,019 INFO L175 Difference]: Start difference. First operand has 263 places, 227 transitions, 2442 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:31:36,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 242 transitions, 2970 flow [2024-06-27 23:31:36,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 242 transitions, 2825 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:36,186 INFO L231 Difference]: Finished difference. Result has 265 places, 228 transitions, 2457 flow [2024-06-27 23:31:36,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2302, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2457, PETRI_PLACES=265, PETRI_TRANSITIONS=228} [2024-06-27 23:31:36,186 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 236 predicate places. [2024-06-27 23:31:36,186 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 228 transitions, 2457 flow [2024-06-27 23:31:36,187 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 23:31:36,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:36,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:36,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 23:31:36,187 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:36,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:36,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1956376359, now seen corresponding path program 15 times [2024-06-27 23:31:36,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:36,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031141664] [2024-06-27 23:31:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:36,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:37,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:37,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031141664] [2024-06-27 23:31:37,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031141664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:37,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:37,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:37,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277678496] [2024-06-27 23:31:37,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:37,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:37,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:37,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:37,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:37,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:37,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 228 transitions, 2457 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 23:31:37,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:37,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:37,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:37,983 INFO L124 PetriNetUnfolderBase]: 584/1046 cut-off events. [2024-06-27 23:31:37,984 INFO L125 PetriNetUnfolderBase]: For 72653/72653 co-relation queries the response was YES. [2024-06-27 23:31:37,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6771 conditions, 1046 events. 584/1046 cut-off events. For 72653/72653 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5421 event pairs, 72 based on Foata normal form. 2/1047 useless extension candidates. Maximal degree in co-relation 6644. Up to 825 conditions per place. [2024-06-27 23:31:37,994 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 169 selfloop transitions, 73 changer transitions 0/244 dead transitions. [2024-06-27 23:31:37,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 244 transitions, 2988 flow [2024-06-27 23:31:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 23:31:37,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2024-06-27 23:31:37,995 INFO L175 Difference]: Start difference. First operand has 265 places, 228 transitions, 2457 flow. Second operand 9 states and 119 transitions. [2024-06-27 23:31:37,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 244 transitions, 2988 flow [2024-06-27 23:31:38,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 244 transitions, 2818 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:31:38,172 INFO L231 Difference]: Finished difference. Result has 265 places, 229 transitions, 2448 flow [2024-06-27 23:31:38,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2287, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2448, PETRI_PLACES=265, PETRI_TRANSITIONS=229} [2024-06-27 23:31:38,172 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 236 predicate places. [2024-06-27 23:31:38,172 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 229 transitions, 2448 flow [2024-06-27 23:31:38,172 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 23:31:38,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:38,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:38,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 23:31:38,173 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:38,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:38,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1956372484, now seen corresponding path program 18 times [2024-06-27 23:31:38,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:38,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485886333] [2024-06-27 23:31:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:38,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:39,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:39,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485886333] [2024-06-27 23:31:39,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485886333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:39,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:39,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:39,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031853300] [2024-06-27 23:31:39,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:39,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:39,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:39,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:39,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:39,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:39,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 229 transitions, 2448 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:39,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:39,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:39,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:39,960 INFO L124 PetriNetUnfolderBase]: 590/1056 cut-off events. [2024-06-27 23:31:39,960 INFO L125 PetriNetUnfolderBase]: For 72787/72787 co-relation queries the response was YES. [2024-06-27 23:31:39,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6783 conditions, 1056 events. 590/1056 cut-off events. For 72787/72787 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 5493 event pairs, 71 based on Foata normal form. 2/1057 useless extension candidates. Maximal degree in co-relation 6657. Up to 582 conditions per place. [2024-06-27 23:31:39,968 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 124 selfloop transitions, 124 changer transitions 0/250 dead transitions. [2024-06-27 23:31:39,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 250 transitions, 3220 flow [2024-06-27 23:31:39,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-27 23:31:39,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 23:31:39,970 INFO L175 Difference]: Start difference. First operand has 265 places, 229 transitions, 2448 flow. Second operand 9 states and 125 transitions. [2024-06-27 23:31:39,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 250 transitions, 3220 flow [2024-06-27 23:31:40,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 250 transitions, 3070 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:40,182 INFO L231 Difference]: Finished difference. Result has 266 places, 233 transitions, 2612 flow [2024-06-27 23:31:40,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2300, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2612, PETRI_PLACES=266, PETRI_TRANSITIONS=233} [2024-06-27 23:31:40,183 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2024-06-27 23:31:40,183 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 233 transitions, 2612 flow [2024-06-27 23:31:40,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:40,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:40,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:40,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 23:31:40,193 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:40,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1018646456, now seen corresponding path program 19 times [2024-06-27 23:31:40,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:40,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137906113] [2024-06-27 23:31:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:40,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:41,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:41,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137906113] [2024-06-27 23:31:41,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137906113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:41,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:41,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:41,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113819296] [2024-06-27 23:31:41,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:41,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:41,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:41,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:41,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:41,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:41,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 233 transitions, 2612 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:41,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:41,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:41,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:41,990 INFO L124 PetriNetUnfolderBase]: 596/1066 cut-off events. [2024-06-27 23:31:41,991 INFO L125 PetriNetUnfolderBase]: For 73134/73134 co-relation queries the response was YES. [2024-06-27 23:31:41,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7022 conditions, 1066 events. 596/1066 cut-off events. For 73134/73134 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5541 event pairs, 59 based on Foata normal form. 2/1067 useless extension candidates. Maximal degree in co-relation 6896. Up to 825 conditions per place. [2024-06-27 23:31:42,000 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 175 selfloop transitions, 71 changer transitions 0/248 dead transitions. [2024-06-27 23:31:42,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 248 transitions, 3176 flow [2024-06-27 23:31:42,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 23:31:42,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:31:42,001 INFO L175 Difference]: Start difference. First operand has 266 places, 233 transitions, 2612 flow. Second operand 9 states and 120 transitions. [2024-06-27 23:31:42,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 248 transitions, 3176 flow [2024-06-27 23:31:42,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 248 transitions, 3060 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 23:31:42,198 INFO L231 Difference]: Finished difference. Result has 269 places, 235 transitions, 2680 flow [2024-06-27 23:31:42,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2500, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2680, PETRI_PLACES=269, PETRI_TRANSITIONS=235} [2024-06-27 23:31:42,199 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 240 predicate places. [2024-06-27 23:31:42,199 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 235 transitions, 2680 flow [2024-06-27 23:31:42,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:42,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:42,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:42,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 23:31:42,200 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:42,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:42,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1406531011, now seen corresponding path program 16 times [2024-06-27 23:31:42,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:42,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048596561] [2024-06-27 23:31:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:42,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:43,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:43,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048596561] [2024-06-27 23:31:43,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048596561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:43,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:43,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:43,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186142622] [2024-06-27 23:31:43,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:43,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:43,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:43,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:43,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:43,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:43,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 235 transitions, 2680 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:43,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:43,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:43,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:43,749 INFO L124 PetriNetUnfolderBase]: 600/1074 cut-off events. [2024-06-27 23:31:43,749 INFO L125 PetriNetUnfolderBase]: For 73064/73064 co-relation queries the response was YES. [2024-06-27 23:31:43,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7171 conditions, 1074 events. 600/1074 cut-off events. For 73064/73064 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5624 event pairs, 74 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 7044. Up to 952 conditions per place. [2024-06-27 23:31:43,758 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 197 selfloop transitions, 48 changer transitions 0/247 dead transitions. [2024-06-27 23:31:43,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 247 transitions, 3205 flow [2024-06-27 23:31:43,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 23:31:43,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 23:31:43,761 INFO L175 Difference]: Start difference. First operand has 269 places, 235 transitions, 2680 flow. Second operand 9 states and 114 transitions. [2024-06-27 23:31:43,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 247 transitions, 3205 flow [2024-06-27 23:31:43,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 247 transitions, 3050 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:43,927 INFO L231 Difference]: Finished difference. Result has 270 places, 236 transitions, 2638 flow [2024-06-27 23:31:43,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2525, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2638, PETRI_PLACES=270, PETRI_TRANSITIONS=236} [2024-06-27 23:31:43,927 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 241 predicate places. [2024-06-27 23:31:43,927 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 236 transitions, 2638 flow [2024-06-27 23:31:43,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:43,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:43,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:43,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 23:31:43,928 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:43,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash 705897774, now seen corresponding path program 20 times [2024-06-27 23:31:43,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:43,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619602711] [2024-06-27 23:31:43,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:43,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:45,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:45,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619602711] [2024-06-27 23:31:45,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619602711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:45,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:45,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:45,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534966228] [2024-06-27 23:31:45,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:45,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:45,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:45,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:45,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:45,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:45,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 236 transitions, 2638 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:45,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:45,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:45,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:45,722 INFO L124 PetriNetUnfolderBase]: 606/1084 cut-off events. [2024-06-27 23:31:45,722 INFO L125 PetriNetUnfolderBase]: For 73031/73031 co-relation queries the response was YES. [2024-06-27 23:31:45,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7151 conditions, 1084 events. 606/1084 cut-off events. For 73031/73031 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5692 event pairs, 60 based on Foata normal form. 2/1085 useless extension candidates. Maximal degree in co-relation 7024. Up to 816 conditions per place. [2024-06-27 23:31:45,732 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 170 selfloop transitions, 80 changer transitions 0/252 dead transitions. [2024-06-27 23:31:45,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 252 transitions, 3216 flow [2024-06-27 23:31:45,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:45,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-27 23:31:45,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-27 23:31:45,735 INFO L175 Difference]: Start difference. First operand has 270 places, 236 transitions, 2638 flow. Second operand 8 states and 116 transitions. [2024-06-27 23:31:45,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 252 transitions, 3216 flow [2024-06-27 23:31:45,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 252 transitions, 3116 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:45,961 INFO L231 Difference]: Finished difference. Result has 270 places, 238 transitions, 2740 flow [2024-06-27 23:31:45,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2740, PETRI_PLACES=270, PETRI_TRANSITIONS=238} [2024-06-27 23:31:45,962 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 241 predicate places. [2024-06-27 23:31:45,962 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 238 transitions, 2740 flow [2024-06-27 23:31:45,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:45,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:45,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:45,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 23:31:45,963 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:45,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:45,963 INFO L85 PathProgramCache]: Analyzing trace with hash 705753469, now seen corresponding path program 17 times [2024-06-27 23:31:45,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:45,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192768280] [2024-06-27 23:31:45,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:45,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:47,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:47,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192768280] [2024-06-27 23:31:47,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192768280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:47,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:47,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:47,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741218998] [2024-06-27 23:31:47,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:47,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:47,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:47,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:47,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:47,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:47,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 238 transitions, 2740 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:47,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:47,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:47,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:47,526 INFO L124 PetriNetUnfolderBase]: 610/1092 cut-off events. [2024-06-27 23:31:47,526 INFO L125 PetriNetUnfolderBase]: For 73218/73218 co-relation queries the response was YES. [2024-06-27 23:31:47,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7293 conditions, 1092 events. 610/1092 cut-off events. For 73218/73218 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5734 event pairs, 76 based on Foata normal form. 2/1093 useless extension candidates. Maximal degree in co-relation 7167. Up to 958 conditions per place. [2024-06-27 23:31:47,536 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 195 selfloop transitions, 53 changer transitions 0/250 dead transitions. [2024-06-27 23:31:47,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 250 transitions, 3273 flow [2024-06-27 23:31:47,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:47,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 23:31:47,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 23:31:47,537 INFO L175 Difference]: Start difference. First operand has 270 places, 238 transitions, 2740 flow. Second operand 8 states and 108 transitions. [2024-06-27 23:31:47,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 250 transitions, 3273 flow [2024-06-27 23:31:47,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 250 transitions, 3096 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:47,735 INFO L231 Difference]: Finished difference. Result has 271 places, 239 transitions, 2688 flow [2024-06-27 23:31:47,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2563, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2688, PETRI_PLACES=271, PETRI_TRANSITIONS=239} [2024-06-27 23:31:47,736 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 242 predicate places. [2024-06-27 23:31:47,736 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 239 transitions, 2688 flow [2024-06-27 23:31:47,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:47,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:47,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:47,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 23:31:47,736 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:47,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:47,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1406675006, now seen corresponding path program 21 times [2024-06-27 23:31:47,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:47,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668785681] [2024-06-27 23:31:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:47,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:49,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:49,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668785681] [2024-06-27 23:31:49,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668785681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:49,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:49,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:49,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776375183] [2024-06-27 23:31:49,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:49,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:49,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:49,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:49,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 239 transitions, 2688 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:49,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:49,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:49,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:49,633 INFO L124 PetriNetUnfolderBase]: 616/1102 cut-off events. [2024-06-27 23:31:49,633 INFO L125 PetriNetUnfolderBase]: For 73181/73181 co-relation queries the response was YES. [2024-06-27 23:31:49,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7257 conditions, 1102 events. 616/1102 cut-off events. For 73181/73181 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5783 event pairs, 62 based on Foata normal form. 2/1103 useless extension candidates. Maximal degree in co-relation 7131. Up to 810 conditions per place. [2024-06-27 23:31:49,643 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 164 selfloop transitions, 89 changer transitions 0/255 dead transitions. [2024-06-27 23:31:49,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 255 transitions, 3276 flow [2024-06-27 23:31:49,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:31:49,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-27 23:31:49,644 INFO L175 Difference]: Start difference. First operand has 271 places, 239 transitions, 2688 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:31:49,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 255 transitions, 3276 flow [2024-06-27 23:31:49,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 255 transitions, 3164 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:49,836 INFO L231 Difference]: Finished difference. Result has 273 places, 241 transitions, 2800 flow [2024-06-27 23:31:49,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2576, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2800, PETRI_PLACES=273, PETRI_TRANSITIONS=241} [2024-06-27 23:31:49,838 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 244 predicate places. [2024-06-27 23:31:49,838 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 241 transitions, 2800 flow [2024-06-27 23:31:49,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:49,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:49,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:49,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 23:31:49,839 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:49,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:49,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1406678881, now seen corresponding path program 18 times [2024-06-27 23:31:49,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:49,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59229768] [2024-06-27 23:31:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:50,986 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 23:31:50,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:50,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59229768] [2024-06-27 23:31:50,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59229768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:50,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:50,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:50,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346532931] [2024-06-27 23:31:50,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:50,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:50,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:50,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:50,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:51,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:51,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 241 transitions, 2800 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:51,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:51,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:51,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:51,398 INFO L124 PetriNetUnfolderBase]: 620/1110 cut-off events. [2024-06-27 23:31:51,398 INFO L125 PetriNetUnfolderBase]: For 73384/73384 co-relation queries the response was YES. [2024-06-27 23:31:51,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7409 conditions, 1110 events. 620/1110 cut-off events. For 73384/73384 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 5833 event pairs, 74 based on Foata normal form. 2/1111 useless extension candidates. Maximal degree in co-relation 7282. Up to 936 conditions per place. [2024-06-27 23:31:51,409 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 195 selfloop transitions, 57 changer transitions 0/254 dead transitions. [2024-06-27 23:31:51,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 254 transitions, 3345 flow [2024-06-27 23:31:51,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:51,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-27 23:31:51,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-27 23:31:51,410 INFO L175 Difference]: Start difference. First operand has 273 places, 241 transitions, 2800 flow. Second operand 8 states and 109 transitions. [2024-06-27 23:31:51,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 254 transitions, 3345 flow [2024-06-27 23:31:51,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 254 transitions, 3146 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:51,607 INFO L231 Difference]: Finished difference. Result has 273 places, 242 transitions, 2736 flow [2024-06-27 23:31:51,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2601, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2736, PETRI_PLACES=273, PETRI_TRANSITIONS=242} [2024-06-27 23:31:51,607 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 244 predicate places. [2024-06-27 23:31:51,607 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 242 transitions, 2736 flow [2024-06-27 23:31:51,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:51,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:51,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:51,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 23:31:51,608 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:51,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1630996679, now seen corresponding path program 19 times [2024-06-27 23:31:51,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:51,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382495017] [2024-06-27 23:31:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:51,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:52,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:52,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382495017] [2024-06-27 23:31:52,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382495017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:52,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:52,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:52,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704627906] [2024-06-27 23:31:52,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:52,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:52,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:52,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:52,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:52,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:52,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 242 transitions, 2736 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:52,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:52,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:52,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:53,350 INFO L124 PetriNetUnfolderBase]: 624/1119 cut-off events. [2024-06-27 23:31:53,351 INFO L125 PetriNetUnfolderBase]: For 73314/73314 co-relation queries the response was YES. [2024-06-27 23:31:53,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7343 conditions, 1119 events. 624/1119 cut-off events. For 73314/73314 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 5920 event pairs, 52 based on Foata normal form. 2/1120 useless extension candidates. Maximal degree in co-relation 7217. Up to 868 conditions per place. [2024-06-27 23:31:53,360 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 185 selfloop transitions, 75 changer transitions 0/262 dead transitions. [2024-06-27 23:31:53,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 262 transitions, 3494 flow [2024-06-27 23:31:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:31:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:31:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-27 23:31:53,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-27 23:31:53,361 INFO L175 Difference]: Start difference. First operand has 273 places, 242 transitions, 2736 flow. Second operand 8 states and 117 transitions. [2024-06-27 23:31:53,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 262 transitions, 3494 flow [2024-06-27 23:31:53,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 262 transitions, 3370 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:53,549 INFO L231 Difference]: Finished difference. Result has 274 places, 243 transitions, 2785 flow [2024-06-27 23:31:53,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2785, PETRI_PLACES=274, PETRI_TRANSITIONS=243} [2024-06-27 23:31:53,549 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 245 predicate places. [2024-06-27 23:31:53,550 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 243 transitions, 2785 flow [2024-06-27 23:31:53,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:53,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:53,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:53,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 23:31:53,550 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:31:53,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:53,550 INFO L85 PathProgramCache]: Analyzing trace with hash -730778901, now seen corresponding path program 20 times [2024-06-27 23:31:53,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:53,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806696384] [2024-06-27 23:31:53,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:53,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:54,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:54,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806696384] [2024-06-27 23:31:54,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806696384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:54,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:54,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:54,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835465546] [2024-06-27 23:31:54,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:54,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:54,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:54,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:54,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:54,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 243 transitions, 2785 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:54,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:54,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:54,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:55,257 INFO L124 PetriNetUnfolderBase]: 628/1127 cut-off events. [2024-06-27 23:31:55,258 INFO L125 PetriNetUnfolderBase]: For 73497/73497 co-relation queries the response was YES. [2024-06-27 23:31:55,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7439 conditions, 1127 events. 628/1127 cut-off events. For 73497/73497 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 5977 event pairs, 76 based on Foata normal form. 2/1128 useless extension candidates. Maximal degree in co-relation 7313. Up to 963 conditions per place. [2024-06-27 23:31:55,268 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 191 selfloop transitions, 68 changer transitions 0/261 dead transitions. [2024-06-27 23:31:55,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 261 transitions, 3371 flow [2024-06-27 23:31:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-27 23:31:55,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-06-27 23:31:55,269 INFO L175 Difference]: Start difference. First operand has 274 places, 243 transitions, 2785 flow. Second operand 9 states and 122 transitions. [2024-06-27 23:31:55,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 261 transitions, 3371 flow [2024-06-27 23:31:55,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 261 transitions, 3189 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 23:31:55,470 INFO L231 Difference]: Finished difference. Result has 276 places, 244 transitions, 2764 flow [2024-06-27 23:31:55,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2605, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2764, PETRI_PLACES=276, PETRI_TRANSITIONS=244} [2024-06-27 23:31:55,470 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 247 predicate places. [2024-06-27 23:31:55,470 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 244 transitions, 2764 flow [2024-06-27 23:31:55,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:55,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:55,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:55,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 23:31:55,471 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 23:31:55,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:55,471 INFO L85 PathProgramCache]: Analyzing trace with hash -730778746, now seen corresponding path program 22 times [2024-06-27 23:31:55,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:55,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543786905] [2024-06-27 23:31:55,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:55,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:56,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:56,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:56,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543786905] [2024-06-27 23:31:56,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543786905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:56,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:56,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:31:56,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618102713] [2024-06-27 23:31:56,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:56,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:31:56,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:56,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:31:56,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:31:56,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:31:56,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 244 transitions, 2764 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:56,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:56,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:31:56,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:57,290 INFO L124 PetriNetUnfolderBase]: 634/1137 cut-off events. [2024-06-27 23:31:57,291 INFO L125 PetriNetUnfolderBase]: For 73375/73375 co-relation queries the response was YES. [2024-06-27 23:31:57,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7450 conditions, 1137 events. 634/1137 cut-off events. For 73375/73375 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6047 event pairs, 55 based on Foata normal form. 2/1138 useless extension candidates. Maximal degree in co-relation 7323. Up to 728 conditions per place. [2024-06-27 23:31:57,302 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 139 selfloop transitions, 126 changer transitions 0/267 dead transitions. [2024-06-27 23:31:57,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 267 transitions, 3575 flow [2024-06-27 23:31:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:31:57,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:31:57,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-27 23:31:57,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-27 23:31:57,303 INFO L175 Difference]: Start difference. First operand has 276 places, 244 transitions, 2764 flow. Second operand 9 states and 132 transitions. [2024-06-27 23:31:57,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 267 transitions, 3575 flow [2024-06-27 23:31:57,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 267 transitions, 3427 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:57,524 INFO L231 Difference]: Finished difference. Result has 277 places, 246 transitions, 2916 flow [2024-06-27 23:31:57,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2916, PETRI_PLACES=277, PETRI_TRANSITIONS=246} [2024-06-27 23:31:57,525 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 248 predicate places. [2024-06-27 23:31:57,525 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 246 transitions, 2916 flow [2024-06-27 23:31:57,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:57,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:57,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:57,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 23:31:57,525 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 23:31:57,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:57,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1387371740, now seen corresponding path program 6 times [2024-06-27 23:31:57,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:57,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739582672] [2024-06-27 23:31:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:57,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:31:59,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:31:59,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:31:59,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739582672] [2024-06-27 23:31:59,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739582672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:31:59,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:31:59,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:31:59,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311979763] [2024-06-27 23:31:59,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:31:59,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:31:59,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:31:59,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:31:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:31:59,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:31:59,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 246 transitions, 2916 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:59,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:31:59,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:31:59,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:31:59,752 INFO L124 PetriNetUnfolderBase]: 635/1140 cut-off events. [2024-06-27 23:31:59,752 INFO L125 PetriNetUnfolderBase]: For 73661/73661 co-relation queries the response was YES. [2024-06-27 23:31:59,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7441 conditions, 1140 events. 635/1140 cut-off events. For 73661/73661 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6073 event pairs, 63 based on Foata normal form. 4/1143 useless extension candidates. Maximal degree in co-relation 7314. Up to 902 conditions per place. [2024-06-27 23:31:59,763 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 198 selfloop transitions, 63 changer transitions 0/263 dead transitions. [2024-06-27 23:31:59,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 263 transitions, 3498 flow [2024-06-27 23:31:59,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:31:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:31:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 23:31:59,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42 [2024-06-27 23:31:59,764 INFO L175 Difference]: Start difference. First operand has 277 places, 246 transitions, 2916 flow. Second operand 10 states and 126 transitions. [2024-06-27 23:31:59,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 263 transitions, 3498 flow [2024-06-27 23:31:59,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 263 transitions, 3193 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:31:59,956 INFO L231 Difference]: Finished difference. Result has 279 places, 247 transitions, 2754 flow [2024-06-27 23:31:59,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2611, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2754, PETRI_PLACES=279, PETRI_TRANSITIONS=247} [2024-06-27 23:31:59,956 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 250 predicate places. [2024-06-27 23:31:59,956 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 247 transitions, 2754 flow [2024-06-27 23:31:59,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:31:59,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:31:59,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:31:59,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 23:31:59,957 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 23:31:59,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:31:59,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1631150284, now seen corresponding path program 23 times [2024-06-27 23:31:59,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:31:59,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794750229] [2024-06-27 23:31:59,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:31:59,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:31:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:01,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:01,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794750229] [2024-06-27 23:32:01,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794750229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:01,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:01,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:32:01,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595102530] [2024-06-27 23:32:01,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:01,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:32:01,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:01,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:32:01,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:32:01,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:32:01,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 247 transitions, 2754 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:01,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:01,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:32:01,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:01,835 INFO L124 PetriNetUnfolderBase]: 641/1152 cut-off events. [2024-06-27 23:32:01,836 INFO L125 PetriNetUnfolderBase]: For 66401/66401 co-relation queries the response was YES. [2024-06-27 23:32:01,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7308 conditions, 1152 events. 641/1152 cut-off events. For 66401/66401 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6158 event pairs, 74 based on Foata normal form. 2/1153 useless extension candidates. Maximal degree in co-relation 7181. Up to 908 conditions per place. [2024-06-27 23:32:01,847 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 185 selfloop transitions, 79 changer transitions 0/266 dead transitions. [2024-06-27 23:32:01,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 266 transitions, 3383 flow [2024-06-27 23:32:01,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:01,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:01,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:32:01,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-27 23:32:01,848 INFO L175 Difference]: Start difference. First operand has 279 places, 247 transitions, 2754 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:32:01,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 266 transitions, 3383 flow [2024-06-27 23:32:02,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 266 transitions, 3194 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 23:32:02,030 INFO L231 Difference]: Finished difference. Result has 278 places, 249 transitions, 2775 flow [2024-06-27 23:32:02,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2775, PETRI_PLACES=278, PETRI_TRANSITIONS=249} [2024-06-27 23:32:02,030 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 249 predicate places. [2024-06-27 23:32:02,030 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 249 transitions, 2775 flow [2024-06-27 23:32:02,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:02,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:02,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:02,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 23:32:02,031 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:02,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:02,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1381794034, now seen corresponding path program 24 times [2024-06-27 23:32:02,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:02,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687372984] [2024-06-27 23:32:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:02,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:03,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:03,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687372984] [2024-06-27 23:32:03,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687372984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:03,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:03,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:32:03,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204756585] [2024-06-27 23:32:03,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:03,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:32:03,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:32:03,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:32:03,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:32:03,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 249 transitions, 2775 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:03,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:03,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:32:03,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:03,917 INFO L124 PetriNetUnfolderBase]: 647/1162 cut-off events. [2024-06-27 23:32:03,917 INFO L125 PetriNetUnfolderBase]: For 67471/67471 co-relation queries the response was YES. [2024-06-27 23:32:03,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7344 conditions, 1162 events. 647/1162 cut-off events. For 67471/67471 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6229 event pairs, 74 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 7218. Up to 891 conditions per place. [2024-06-27 23:32:03,928 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 177 selfloop transitions, 90 changer transitions 0/269 dead transitions. [2024-06-27 23:32:03,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 269 transitions, 3418 flow [2024-06-27 23:32:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:03,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:03,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-27 23:32:03,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740740740740741 [2024-06-27 23:32:03,929 INFO L175 Difference]: Start difference. First operand has 278 places, 249 transitions, 2775 flow. Second operand 9 states and 128 transitions. [2024-06-27 23:32:03,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 269 transitions, 3418 flow [2024-06-27 23:32:04,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 269 transitions, 3235 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:32:04,126 INFO L231 Difference]: Finished difference. Result has 279 places, 251 transitions, 2826 flow [2024-06-27 23:32:04,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2826, PETRI_PLACES=279, PETRI_TRANSITIONS=251} [2024-06-27 23:32:04,126 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 250 predicate places. [2024-06-27 23:32:04,126 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 251 transitions, 2826 flow [2024-06-27 23:32:04,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:04,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:04,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:04,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 23:32:04,127 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:04,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:04,128 INFO L85 PathProgramCache]: Analyzing trace with hash -730634751, now seen corresponding path program 21 times [2024-06-27 23:32:04,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:04,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421655920] [2024-06-27 23:32:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:04,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:05,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:05,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421655920] [2024-06-27 23:32:05,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421655920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:05,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:05,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:32:05,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238361558] [2024-06-27 23:32:05,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:05,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:32:05,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:05,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:32:05,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:32:05,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:32:05,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 251 transitions, 2826 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:05,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:05,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:32:05,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:05,850 INFO L124 PetriNetUnfolderBase]: 651/1170 cut-off events. [2024-06-27 23:32:05,850 INFO L125 PetriNetUnfolderBase]: For 67607/67607 co-relation queries the response was YES. [2024-06-27 23:32:05,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7399 conditions, 1170 events. 651/1170 cut-off events. For 67607/67607 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6281 event pairs, 99 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 7273. Up to 1045 conditions per place. [2024-06-27 23:32:05,861 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 213 selfloop transitions, 51 changer transitions 0/266 dead transitions. [2024-06-27 23:32:05,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 266 transitions, 3410 flow [2024-06-27 23:32:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:32:05,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:32:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-27 23:32:05,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 23:32:05,863 INFO L175 Difference]: Start difference. First operand has 279 places, 251 transitions, 2826 flow. Second operand 8 states and 110 transitions. [2024-06-27 23:32:05,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 266 transitions, 3410 flow [2024-06-27 23:32:06,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 266 transitions, 3205 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 23:32:06,059 INFO L231 Difference]: Finished difference. Result has 279 places, 252 transitions, 2748 flow [2024-06-27 23:32:06,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2621, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2748, PETRI_PLACES=279, PETRI_TRANSITIONS=252} [2024-06-27 23:32:06,059 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 250 predicate places. [2024-06-27 23:32:06,059 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 252 transitions, 2748 flow [2024-06-27 23:32:06,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:06,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:06,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:06,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 23:32:06,060 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:06,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:06,061 INFO L85 PathProgramCache]: Analyzing trace with hash -725266636, now seen corresponding path program 25 times [2024-06-27 23:32:06,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:06,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801269112] [2024-06-27 23:32:06,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:06,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:07,481 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 23:32:07,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:07,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801269112] [2024-06-27 23:32:07,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801269112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:07,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:07,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:07,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147046335] [2024-06-27 23:32:07,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:07,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:07,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:07,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:07,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:07,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:32:07,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 252 transitions, 2748 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 23:32:07,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:07,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:32:07,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:08,073 INFO L124 PetriNetUnfolderBase]: 657/1177 cut-off events. [2024-06-27 23:32:08,073 INFO L125 PetriNetUnfolderBase]: For 67505/67505 co-relation queries the response was YES. [2024-06-27 23:32:08,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7343 conditions, 1177 events. 657/1177 cut-off events. For 67505/67505 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6317 event pairs, 57 based on Foata normal form. 2/1178 useless extension candidates. Maximal degree in co-relation 7218. Up to 936 conditions per place. [2024-06-27 23:32:08,085 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 197 selfloop transitions, 71 changer transitions 0/270 dead transitions. [2024-06-27 23:32:08,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 270 transitions, 3386 flow [2024-06-27 23:32:08,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:32:08,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:32:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 23:32:08,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44333333333333336 [2024-06-27 23:32:08,086 INFO L175 Difference]: Start difference. First operand has 279 places, 252 transitions, 2748 flow. Second operand 10 states and 133 transitions. [2024-06-27 23:32:08,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 270 transitions, 3386 flow [2024-06-27 23:32:08,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 270 transitions, 3272 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:32:08,291 INFO L231 Difference]: Finished difference. Result has 282 places, 254 transitions, 2834 flow [2024-06-27 23:32:08,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2834, PETRI_PLACES=282, PETRI_TRANSITIONS=254} [2024-06-27 23:32:08,292 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 253 predicate places. [2024-06-27 23:32:08,292 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 254 transitions, 2834 flow [2024-06-27 23:32:08,292 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 23:32:08,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:08,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:08,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 23:32:08,293 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:08,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:08,293 INFO L85 PathProgramCache]: Analyzing trace with hash -281237028, now seen corresponding path program 26 times [2024-06-27 23:32:08,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:08,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881267506] [2024-06-27 23:32:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:08,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:09,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:09,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881267506] [2024-06-27 23:32:09,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881267506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:09,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:09,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:09,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630796068] [2024-06-27 23:32:09,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:09,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:09,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:09,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:32:09,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 254 transitions, 2834 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 23:32:09,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:09,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:32:09,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:10,276 INFO L124 PetriNetUnfolderBase]: 663/1187 cut-off events. [2024-06-27 23:32:10,277 INFO L125 PetriNetUnfolderBase]: For 67937/67937 co-relation queries the response was YES. [2024-06-27 23:32:10,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7501 conditions, 1187 events. 663/1187 cut-off events. For 67937/67937 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6383 event pairs, 57 based on Foata normal form. 2/1188 useless extension candidates. Maximal degree in co-relation 7375. Up to 900 conditions per place. [2024-06-27 23:32:10,287 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 186 selfloop transitions, 85 changer transitions 0/273 dead transitions. [2024-06-27 23:32:10,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 273 transitions, 3654 flow [2024-06-27 23:32:10,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:32:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:32:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 23:32:10,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-06-27 23:32:10,289 INFO L175 Difference]: Start difference. First operand has 282 places, 254 transitions, 2834 flow. Second operand 10 states and 136 transitions. [2024-06-27 23:32:10,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 273 transitions, 3654 flow [2024-06-27 23:32:10,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 273 transitions, 3477 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:10,487 INFO L231 Difference]: Finished difference. Result has 283 places, 256 transitions, 2887 flow [2024-06-27 23:32:10,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2887, PETRI_PLACES=283, PETRI_TRANSITIONS=256} [2024-06-27 23:32:10,488 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 254 predicate places. [2024-06-27 23:32:10,488 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 256 transitions, 2887 flow [2024-06-27 23:32:10,488 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 23:32:10,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:10,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:10,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 23:32:10,488 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:10,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:10,489 INFO L85 PathProgramCache]: Analyzing trace with hash 135386097, now seen corresponding path program 22 times [2024-06-27 23:32:10,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:10,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617099015] [2024-06-27 23:32:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:10,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:11,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:11,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617099015] [2024-06-27 23:32:11,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617099015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:11,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:11,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:11,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691848426] [2024-06-27 23:32:11,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:11,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:11,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:11,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:11,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:11,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:32:11,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 256 transitions, 2887 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 23:32:11,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:11,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:32:11,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:12,287 INFO L124 PetriNetUnfolderBase]: 660/1182 cut-off events. [2024-06-27 23:32:12,287 INFO L125 PetriNetUnfolderBase]: For 60548/60548 co-relation queries the response was YES. [2024-06-27 23:32:12,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7308 conditions, 1182 events. 660/1182 cut-off events. For 60548/60548 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6348 event pairs, 81 based on Foata normal form. 2/1183 useless extension candidates. Maximal degree in co-relation 7182. Up to 1060 conditions per place. [2024-06-27 23:32:12,298 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 219 selfloop transitions, 47 changer transitions 0/268 dead transitions. [2024-06-27 23:32:12,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 268 transitions, 3447 flow [2024-06-27 23:32:12,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:32:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:32:12,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-27 23:32:12,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:32:12,300 INFO L175 Difference]: Start difference. First operand has 283 places, 256 transitions, 2887 flow. Second operand 9 states and 117 transitions. [2024-06-27 23:32:12,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 268 transitions, 3447 flow [2024-06-27 23:32:12,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 268 transitions, 3179 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:12,474 INFO L231 Difference]: Finished difference. Result has 283 places, 256 transitions, 2719 flow [2024-06-27 23:32:12,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2619, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2719, PETRI_PLACES=283, PETRI_TRANSITIONS=256} [2024-06-27 23:32:12,474 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 254 predicate places. [2024-06-27 23:32:12,474 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 256 transitions, 2719 flow [2024-06-27 23:32:12,474 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 23:32:12,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:12,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:12,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 23:32:12,475 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:12,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash 135593642, now seen corresponding path program 27 times [2024-06-27 23:32:12,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:12,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496153430] [2024-06-27 23:32:12,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:12,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:13,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:13,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496153430] [2024-06-27 23:32:13,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496153430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:13,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:13,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:13,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735725306] [2024-06-27 23:32:13,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:13,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:13,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:13,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:13,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:14,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:32:14,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 256 transitions, 2719 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 23:32:14,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:14,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:32:14,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:14,571 INFO L124 PetriNetUnfolderBase]: 656/1176 cut-off events. [2024-06-27 23:32:14,572 INFO L125 PetriNetUnfolderBase]: For 52478/52478 co-relation queries the response was YES. [2024-06-27 23:32:14,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6859 conditions, 1176 events. 656/1176 cut-off events. For 52478/52478 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6323 event pairs, 55 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 6734. Up to 935 conditions per place. [2024-06-27 23:32:14,582 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 199 selfloop transitions, 73 changer transitions 0/274 dead transitions. [2024-06-27 23:32:14,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 274 transitions, 3323 flow [2024-06-27 23:32:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:32:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:32:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 23:32:14,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 23:32:14,584 INFO L175 Difference]: Start difference. First operand has 283 places, 256 transitions, 2719 flow. Second operand 12 states and 152 transitions. [2024-06-27 23:32:14,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 274 transitions, 3323 flow [2024-06-27 23:32:14,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 274 transitions, 3108 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 23:32:14,737 INFO L231 Difference]: Finished difference. Result has 285 places, 256 transitions, 2658 flow [2024-06-27 23:32:14,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2504, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2658, PETRI_PLACES=285, PETRI_TRANSITIONS=256} [2024-06-27 23:32:14,738 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 256 predicate places. [2024-06-27 23:32:14,738 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 256 transitions, 2658 flow [2024-06-27 23:32:14,738 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 23:32:14,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:14,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:14,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 23:32:14,738 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:14,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1347571904, now seen corresponding path program 1 times [2024-06-27 23:32:14,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:14,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074498617] [2024-06-27 23:32:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:14,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:16,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:16,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:16,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074498617] [2024-06-27 23:32:16,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074498617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:16,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:16,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:16,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578460316] [2024-06-27 23:32:16,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:16,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:16,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:16,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:16,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 256 transitions, 2658 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:16,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:16,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:16,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:16,778 INFO L124 PetriNetUnfolderBase]: 697/1264 cut-off events. [2024-06-27 23:32:16,779 INFO L125 PetriNetUnfolderBase]: For 109814/109814 co-relation queries the response was YES. [2024-06-27 23:32:16,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7935 conditions, 1264 events. 697/1264 cut-off events. For 109814/109814 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6841 event pairs, 163 based on Foata normal form. 8/1271 useless extension candidates. Maximal degree in co-relation 7809. Up to 578 conditions per place. [2024-06-27 23:32:16,790 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 176 selfloop transitions, 91 changer transitions 13/282 dead transitions. [2024-06-27 23:32:16,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 282 transitions, 3492 flow [2024-06-27 23:32:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:32:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:32:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:32:16,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-27 23:32:16,791 INFO L175 Difference]: Start difference. First operand has 285 places, 256 transitions, 2658 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:32:16,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 282 transitions, 3492 flow [2024-06-27 23:32:17,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 282 transitions, 3271 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-27 23:32:17,020 INFO L231 Difference]: Finished difference. Result has 283 places, 253 transitions, 2600 flow [2024-06-27 23:32:17,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2600, PETRI_PLACES=283, PETRI_TRANSITIONS=253} [2024-06-27 23:32:17,020 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 254 predicate places. [2024-06-27 23:32:17,020 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 253 transitions, 2600 flow [2024-06-27 23:32:17,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:17,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:17,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:17,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 23:32:17,021 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:17,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:17,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1289359484, now seen corresponding path program 2 times [2024-06-27 23:32:17,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:17,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229908335] [2024-06-27 23:32:17,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:17,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:18,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:18,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229908335] [2024-06-27 23:32:18,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229908335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:18,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:18,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:18,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343886782] [2024-06-27 23:32:18,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:18,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:18,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:18,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:18,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:18,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:18,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 253 transitions, 2600 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:18,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:18,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:18,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:19,080 INFO L124 PetriNetUnfolderBase]: 689/1252 cut-off events. [2024-06-27 23:32:19,080 INFO L125 PetriNetUnfolderBase]: For 117089/117089 co-relation queries the response was YES. [2024-06-27 23:32:19,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7788 conditions, 1252 events. 689/1252 cut-off events. For 117089/117089 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6758 event pairs, 173 based on Foata normal form. 10/1261 useless extension candidates. Maximal degree in co-relation 7663. Up to 885 conditions per place. [2024-06-27 23:32:19,092 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 168 selfloop transitions, 91 changer transitions 11/272 dead transitions. [2024-06-27 23:32:19,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 272 transitions, 3216 flow [2024-06-27 23:32:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:32:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:32:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 23:32:19,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:32:19,093 INFO L175 Difference]: Start difference. First operand has 283 places, 253 transitions, 2600 flow. Second operand 11 states and 130 transitions. [2024-06-27 23:32:19,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 272 transitions, 3216 flow [2024-06-27 23:32:19,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 272 transitions, 3077 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 23:32:19,314 INFO L231 Difference]: Finished difference. Result has 282 places, 250 transitions, 2620 flow [2024-06-27 23:32:19,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2461, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2620, PETRI_PLACES=282, PETRI_TRANSITIONS=250} [2024-06-27 23:32:19,314 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 253 predicate places. [2024-06-27 23:32:19,314 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 250 transitions, 2620 flow [2024-06-27 23:32:19,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:19,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:19,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:19,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 23:32:19,315 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:19,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:19,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1289364134, now seen corresponding path program 3 times [2024-06-27 23:32:19,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:19,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536773970] [2024-06-27 23:32:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:19,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:20,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:20,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536773970] [2024-06-27 23:32:20,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536773970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:20,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:20,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:20,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946594313] [2024-06-27 23:32:20,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:20,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:20,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:20,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:20,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:20,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:20,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 250 transitions, 2620 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:20,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:20,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:20,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:21,374 INFO L124 PetriNetUnfolderBase]: 677/1232 cut-off events. [2024-06-27 23:32:21,375 INFO L125 PetriNetUnfolderBase]: For 109800/109800 co-relation queries the response was YES. [2024-06-27 23:32:21,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7827 conditions, 1232 events. 677/1232 cut-off events. For 109800/109800 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6629 event pairs, 169 based on Foata normal form. 8/1239 useless extension candidates. Maximal degree in co-relation 7702. Up to 875 conditions per place. [2024-06-27 23:32:21,385 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 166 selfloop transitions, 89 changer transitions 11/268 dead transitions. [2024-06-27 23:32:21,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 268 transitions, 3218 flow [2024-06-27 23:32:21,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:32:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:32:21,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 23:32:21,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033333333333333 [2024-06-27 23:32:21,387 INFO L175 Difference]: Start difference. First operand has 282 places, 250 transitions, 2620 flow. Second operand 10 states and 121 transitions. [2024-06-27 23:32:21,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 268 transitions, 3218 flow [2024-06-27 23:32:21,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 268 transitions, 3030 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:21,606 INFO L231 Difference]: Finished difference. Result has 280 places, 247 transitions, 2586 flow [2024-06-27 23:32:21,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2586, PETRI_PLACES=280, PETRI_TRANSITIONS=247} [2024-06-27 23:32:21,607 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 251 predicate places. [2024-06-27 23:32:21,607 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 247 transitions, 2586 flow [2024-06-27 23:32:21,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:21,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:21,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:21,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 23:32:21,608 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:21,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:21,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1289479454, now seen corresponding path program 4 times [2024-06-27 23:32:21,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:21,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285808989] [2024-06-27 23:32:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:21,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:23,127 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 23:32:23,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:23,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285808989] [2024-06-27 23:32:23,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285808989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:23,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:23,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:23,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048048337] [2024-06-27 23:32:23,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:23,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:23,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:23,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:23,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:23,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:23,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 247 transitions, 2586 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:23,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:23,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:23,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:23,757 INFO L124 PetriNetUnfolderBase]: 670/1219 cut-off events. [2024-06-27 23:32:23,757 INFO L125 PetriNetUnfolderBase]: For 109808/109808 co-relation queries the response was YES. [2024-06-27 23:32:23,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7761 conditions, 1219 events. 670/1219 cut-off events. For 109808/109808 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6554 event pairs, 161 based on Foata normal form. 8/1226 useless extension candidates. Maximal degree in co-relation 7636. Up to 857 conditions per place. [2024-06-27 23:32:23,768 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 162 selfloop transitions, 87 changer transitions 15/266 dead transitions. [2024-06-27 23:32:23,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 266 transitions, 3182 flow [2024-06-27 23:32:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:32:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:32:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 23:32:23,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-27 23:32:23,769 INFO L175 Difference]: Start difference. First operand has 280 places, 247 transitions, 2586 flow. Second operand 11 states and 127 transitions. [2024-06-27 23:32:23,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 266 transitions, 3182 flow [2024-06-27 23:32:23,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 266 transitions, 2996 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 23:32:24,019 INFO L231 Difference]: Finished difference. Result has 279 places, 243 transitions, 2531 flow [2024-06-27 23:32:24,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2531, PETRI_PLACES=279, PETRI_TRANSITIONS=243} [2024-06-27 23:32:24,019 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 250 predicate places. [2024-06-27 23:32:24,019 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 243 transitions, 2531 flow [2024-06-27 23:32:24,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:24,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:24,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:24,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 23:32:24,020 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:24,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:24,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1402728256, now seen corresponding path program 5 times [2024-06-27 23:32:24,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:24,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125878821] [2024-06-27 23:32:24,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:24,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:25,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:25,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:25,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125878821] [2024-06-27 23:32:25,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125878821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:25,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:25,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:25,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707944174] [2024-06-27 23:32:25,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:25,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:25,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:25,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:25,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:25,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:25,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 243 transitions, 2531 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:25,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:25,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:25,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:26,203 INFO L124 PetriNetUnfolderBase]: 663/1206 cut-off events. [2024-06-27 23:32:26,203 INFO L125 PetriNetUnfolderBase]: For 117035/117035 co-relation queries the response was YES. [2024-06-27 23:32:26,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7675 conditions, 1206 events. 663/1206 cut-off events. For 117035/117035 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6459 event pairs, 168 based on Foata normal form. 10/1215 useless extension candidates. Maximal degree in co-relation 7550. Up to 1002 conditions per place. [2024-06-27 23:32:26,215 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 204 selfloop transitions, 44 changer transitions 11/261 dead transitions. [2024-06-27 23:32:26,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 261 transitions, 3121 flow [2024-06-27 23:32:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:32:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:32:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:32:26,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 23:32:26,216 INFO L175 Difference]: Start difference. First operand has 279 places, 243 transitions, 2531 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:32:26,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 261 transitions, 3121 flow [2024-06-27 23:32:26,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 261 transitions, 2937 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 23:32:26,462 INFO L231 Difference]: Finished difference. Result has 276 places, 240 transitions, 2409 flow [2024-06-27 23:32:26,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2347, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2409, PETRI_PLACES=276, PETRI_TRANSITIONS=240} [2024-06-27 23:32:26,463 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 247 predicate places. [2024-06-27 23:32:26,463 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 240 transitions, 2409 flow [2024-06-27 23:32:26,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:26,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:26,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:26,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 23:32:26,464 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:26,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:26,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1402555276, now seen corresponding path program 6 times [2024-06-27 23:32:26,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:26,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860634725] [2024-06-27 23:32:26,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:26,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:28,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:28,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860634725] [2024-06-27 23:32:28,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860634725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:28,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:28,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:28,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377228259] [2024-06-27 23:32:28,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:28,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:28,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:28,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:28,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:28,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:28,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 240 transitions, 2409 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:28,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:28,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:28,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:28,608 INFO L124 PetriNetUnfolderBase]: 653/1192 cut-off events. [2024-06-27 23:32:28,609 INFO L125 PetriNetUnfolderBase]: For 116771/116771 co-relation queries the response was YES. [2024-06-27 23:32:28,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7466 conditions, 1192 events. 653/1192 cut-off events. For 116771/116771 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6369 event pairs, 169 based on Foata normal form. 10/1201 useless extension candidates. Maximal degree in co-relation 7341. Up to 978 conditions per place. [2024-06-27 23:32:28,619 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 197 selfloop transitions, 48 changer transitions 11/258 dead transitions. [2024-06-27 23:32:28,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 258 transitions, 2993 flow [2024-06-27 23:32:28,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:32:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:32:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 23:32:28,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 23:32:28,621 INFO L175 Difference]: Start difference. First operand has 276 places, 240 transitions, 2409 flow. Second operand 11 states and 129 transitions. [2024-06-27 23:32:28,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 258 transitions, 2993 flow [2024-06-27 23:32:28,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 258 transitions, 2899 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:28,830 INFO L231 Difference]: Finished difference. Result has 275 places, 237 transitions, 2384 flow [2024-06-27 23:32:28,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2384, PETRI_PLACES=275, PETRI_TRANSITIONS=237} [2024-06-27 23:32:28,831 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 246 predicate places. [2024-06-27 23:32:28,831 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 237 transitions, 2384 flow [2024-06-27 23:32:28,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:28,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:28,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:28,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 23:32:28,832 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:28,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:28,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1402550626, now seen corresponding path program 7 times [2024-06-27 23:32:28,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:28,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207110714] [2024-06-27 23:32:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:28,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:30,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:30,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207110714] [2024-06-27 23:32:30,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207110714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:30,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:30,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:30,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205703619] [2024-06-27 23:32:30,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:30,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:30,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:30,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:30,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:30,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:30,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 237 transitions, 2384 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:30,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:30,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:30,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:31,244 INFO L124 PetriNetUnfolderBase]: 656/1205 cut-off events. [2024-06-27 23:32:31,244 INFO L125 PetriNetUnfolderBase]: For 130774/130774 co-relation queries the response was YES. [2024-06-27 23:32:31,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7966 conditions, 1205 events. 656/1205 cut-off events. For 130774/130774 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6488 event pairs, 191 based on Foata normal form. 8/1212 useless extension candidates. Maximal degree in co-relation 7841. Up to 1029 conditions per place. [2024-06-27 23:32:31,255 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 213 selfloop transitions, 33 changer transitions 8/256 dead transitions. [2024-06-27 23:32:31,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 256 transitions, 3128 flow [2024-06-27 23:32:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:32:31,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:32:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 23:32:31,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:32:31,256 INFO L175 Difference]: Start difference. First operand has 275 places, 237 transitions, 2384 flow. Second operand 11 states and 130 transitions. [2024-06-27 23:32:31,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 256 transitions, 3128 flow [2024-06-27 23:32:31,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 256 transitions, 3024 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:31,514 INFO L231 Difference]: Finished difference. Result has 274 places, 234 transitions, 2315 flow [2024-06-27 23:32:31,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2315, PETRI_PLACES=274, PETRI_TRANSITIONS=234} [2024-06-27 23:32:31,514 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 245 predicate places. [2024-06-27 23:32:31,514 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 234 transitions, 2315 flow [2024-06-27 23:32:31,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:31,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:31,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:31,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 23:32:31,515 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:31,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:31,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1398081976, now seen corresponding path program 8 times [2024-06-27 23:32:31,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:31,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754347383] [2024-06-27 23:32:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:31,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:33,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:33,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754347383] [2024-06-27 23:32:33,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754347383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:33,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:33,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:33,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164983344] [2024-06-27 23:32:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:33,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:33,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:33,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:33,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:33,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:33,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 234 transitions, 2315 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:33,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:33,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:33,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:33,755 INFO L124 PetriNetUnfolderBase]: 678/1251 cut-off events. [2024-06-27 23:32:33,755 INFO L125 PetriNetUnfolderBase]: For 166545/166545 co-relation queries the response was YES. [2024-06-27 23:32:33,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8880 conditions, 1251 events. 678/1251 cut-off events. For 166545/166545 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6768 event pairs, 209 based on Foata normal form. 8/1258 useless extension candidates. Maximal degree in co-relation 8755. Up to 1053 conditions per place. [2024-06-27 23:32:33,767 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 209 selfloop transitions, 37 changer transitions 7/255 dead transitions. [2024-06-27 23:32:33,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 255 transitions, 3077 flow [2024-06-27 23:32:33,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:32:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:32:33,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 23:32:33,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 23:32:33,768 INFO L175 Difference]: Start difference. First operand has 274 places, 234 transitions, 2315 flow. Second operand 11 states and 132 transitions. [2024-06-27 23:32:33,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 255 transitions, 3077 flow [2024-06-27 23:32:34,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 255 transitions, 3001 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 23:32:34,057 INFO L231 Difference]: Finished difference. Result has 272 places, 232 transitions, 2297 flow [2024-06-27 23:32:34,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2297, PETRI_PLACES=272, PETRI_TRANSITIONS=232} [2024-06-27 23:32:34,057 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 243 predicate places. [2024-06-27 23:32:34,057 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 232 transitions, 2297 flow [2024-06-27 23:32:34,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:34,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:34,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:34,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 23:32:34,058 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:34,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:34,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1398086626, now seen corresponding path program 9 times [2024-06-27 23:32:34,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:34,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992416295] [2024-06-27 23:32:34,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:34,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:35,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:35,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992416295] [2024-06-27 23:32:35,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992416295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:35,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:35,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:35,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410570741] [2024-06-27 23:32:35,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:35,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:35,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:35,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:35,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:35,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 232 transitions, 2297 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:35,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:35,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:35,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:36,354 INFO L124 PetriNetUnfolderBase]: 632/1157 cut-off events. [2024-06-27 23:32:36,354 INFO L125 PetriNetUnfolderBase]: For 116661/116661 co-relation queries the response was YES. [2024-06-27 23:32:36,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7238 conditions, 1157 events. 632/1157 cut-off events. For 116661/116661 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6178 event pairs, 169 based on Foata normal form. 10/1166 useless extension candidates. Maximal degree in co-relation 7113. Up to 940 conditions per place. [2024-06-27 23:32:36,364 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 189 selfloop transitions, 46 changer transitions 13/250 dead transitions. [2024-06-27 23:32:36,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 250 transitions, 2865 flow [2024-06-27 23:32:36,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:32:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:32:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:32:36,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 23:32:36,366 INFO L175 Difference]: Start difference. First operand has 272 places, 232 transitions, 2297 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:32:36,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 250 transitions, 2865 flow [2024-06-27 23:32:36,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 250 transitions, 2789 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:36,583 INFO L231 Difference]: Finished difference. Result has 272 places, 228 transitions, 2273 flow [2024-06-27 23:32:36,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2273, PETRI_PLACES=272, PETRI_TRANSITIONS=228} [2024-06-27 23:32:36,583 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 243 predicate places. [2024-06-27 23:32:36,584 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 228 transitions, 2273 flow [2024-06-27 23:32:36,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:36,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:36,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:36,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 23:32:36,584 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:36,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:36,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1397966656, now seen corresponding path program 10 times [2024-06-27 23:32:36,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:36,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878577454] [2024-06-27 23:32:36,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:36,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:38,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:38,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878577454] [2024-06-27 23:32:38,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878577454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:38,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:38,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:38,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925518951] [2024-06-27 23:32:38,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:38,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:38,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:38,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:38,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 228 transitions, 2273 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:38,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:38,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:38,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:38,484 INFO L124 PetriNetUnfolderBase]: 619/1134 cut-off events. [2024-06-27 23:32:38,484 INFO L125 PetriNetUnfolderBase]: For 109444/109444 co-relation queries the response was YES. [2024-06-27 23:32:38,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7162 conditions, 1134 events. 619/1134 cut-off events. For 109444/109444 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6009 event pairs, 179 based on Foata normal form. 8/1141 useless extension candidates. Maximal degree in co-relation 7037. Up to 1002 conditions per place. [2024-06-27 23:32:38,494 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 196 selfloop transitions, 32 changer transitions 14/244 dead transitions. [2024-06-27 23:32:38,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 244 transitions, 2809 flow [2024-06-27 23:32:38,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:32:38,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:32:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 23:32:38,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-27 23:32:38,495 INFO L175 Difference]: Start difference. First operand has 272 places, 228 transitions, 2273 flow. Second operand 10 states and 118 transitions. [2024-06-27 23:32:38,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 244 transitions, 2809 flow [2024-06-27 23:32:38,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 244 transitions, 2707 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 23:32:38,720 INFO L231 Difference]: Finished difference. Result has 268 places, 224 transitions, 2183 flow [2024-06-27 23:32:38,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2183, PETRI_PLACES=268, PETRI_TRANSITIONS=224} [2024-06-27 23:32:38,720 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 239 predicate places. [2024-06-27 23:32:38,720 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 224 transitions, 2183 flow [2024-06-27 23:32:38,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:38,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:38,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:38,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 23:32:38,721 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:38,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:38,722 INFO L85 PathProgramCache]: Analyzing trace with hash 523631330, now seen corresponding path program 11 times [2024-06-27 23:32:38,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:38,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535522826] [2024-06-27 23:32:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:38,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:40,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:40,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:40,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535522826] [2024-06-27 23:32:40,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535522826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:40,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:40,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:40,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633051276] [2024-06-27 23:32:40,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:40,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:40,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:40,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:40,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:40,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:40,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 224 transitions, 2183 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:40,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:40,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:40,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:40,704 INFO L124 PetriNetUnfolderBase]: 637/1172 cut-off events. [2024-06-27 23:32:40,705 INFO L125 PetriNetUnfolderBase]: For 145215/145215 co-relation queries the response was YES. [2024-06-27 23:32:40,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8026 conditions, 1172 events. 637/1172 cut-off events. For 145215/145215 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6233 event pairs, 190 based on Foata normal form. 8/1179 useless extension candidates. Maximal degree in co-relation 7901. Up to 822 conditions per place. [2024-06-27 23:32:40,715 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 179 selfloop transitions, 56 changer transitions 12/249 dead transitions. [2024-06-27 23:32:40,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 249 transitions, 2947 flow [2024-06-27 23:32:40,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:32:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:32:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 23:32:40,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-27 23:32:40,716 INFO L175 Difference]: Start difference. First operand has 268 places, 224 transitions, 2183 flow. Second operand 10 states and 132 transitions. [2024-06-27 23:32:40,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 249 transitions, 2947 flow [2024-06-27 23:32:40,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 249 transitions, 2805 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-27 23:32:40,995 INFO L231 Difference]: Finished difference. Result has 260 places, 221 transitions, 2126 flow [2024-06-27 23:32:40,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2126, PETRI_PLACES=260, PETRI_TRANSITIONS=221} [2024-06-27 23:32:40,995 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-06-27 23:32:40,995 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 221 transitions, 2126 flow [2024-06-27 23:32:40,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:40,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:40,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:40,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 23:32:40,996 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:40,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:40,996 INFO L85 PathProgramCache]: Analyzing trace with hash 523751300, now seen corresponding path program 12 times [2024-06-27 23:32:40,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:40,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386916641] [2024-06-27 23:32:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:40,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:42,567 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 23:32:42,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:42,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386916641] [2024-06-27 23:32:42,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386916641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:42,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:42,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:42,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831475559] [2024-06-27 23:32:42,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:42,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:42,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:42,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:42,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:42,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:42,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 221 transitions, 2126 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:42,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:42,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:42,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:43,195 INFO L124 PetriNetUnfolderBase]: 627/1152 cut-off events. [2024-06-27 23:32:43,195 INFO L125 PetriNetUnfolderBase]: For 152386/152386 co-relation queries the response was YES. [2024-06-27 23:32:43,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7866 conditions, 1152 events. 627/1152 cut-off events. For 152386/152386 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6104 event pairs, 174 based on Foata normal form. 10/1161 useless extension candidates. Maximal degree in co-relation 7744. Up to 826 conditions per place. [2024-06-27 23:32:43,205 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 142 selfloop transitions, 86 changer transitions 12/242 dead transitions. [2024-06-27 23:32:43,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 242 transitions, 2692 flow [2024-06-27 23:32:43,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:32:43,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:32:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:32:43,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:32:43,207 INFO L175 Difference]: Start difference. First operand has 260 places, 221 transitions, 2126 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:32:43,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 242 transitions, 2692 flow [2024-06-27 23:32:43,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 242 transitions, 2591 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 23:32:43,438 INFO L231 Difference]: Finished difference. Result has 259 places, 218 transitions, 2167 flow [2024-06-27 23:32:43,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=2025, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2167, PETRI_PLACES=259, PETRI_TRANSITIONS=218} [2024-06-27 23:32:43,439 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-27 23:32:43,439 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 218 transitions, 2167 flow [2024-06-27 23:32:43,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:43,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:43,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:43,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 23:32:43,440 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:43,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:43,440 INFO L85 PathProgramCache]: Analyzing trace with hash 523746650, now seen corresponding path program 13 times [2024-06-27 23:32:43,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:43,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574561095] [2024-06-27 23:32:43,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:43,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:44,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:44,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574561095] [2024-06-27 23:32:44,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574561095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:44,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:44,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:44,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96187828] [2024-06-27 23:32:44,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:44,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:44,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:44,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:44,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:45,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:45,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 218 transitions, 2167 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:45,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:45,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:45,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:45,540 INFO L124 PetriNetUnfolderBase]: 615/1132 cut-off events. [2024-06-27 23:32:45,540 INFO L125 PetriNetUnfolderBase]: For 145164/145164 co-relation queries the response was YES. [2024-06-27 23:32:45,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7897 conditions, 1132 events. 615/1132 cut-off events. For 145164/145164 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5965 event pairs, 196 based on Foata normal form. 8/1139 useless extension candidates. Maximal degree in co-relation 7776. Up to 955 conditions per place. [2024-06-27 23:32:45,550 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 169 selfloop transitions, 52 changer transitions 13/236 dead transitions. [2024-06-27 23:32:45,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 236 transitions, 2699 flow [2024-06-27 23:32:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:32:45,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:32:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 23:32:45,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 23:32:45,552 INFO L175 Difference]: Start difference. First operand has 259 places, 218 transitions, 2167 flow. Second operand 11 states and 130 transitions. [2024-06-27 23:32:45,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 236 transitions, 2699 flow [2024-06-27 23:32:45,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 236 transitions, 2521 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:45,780 INFO L231 Difference]: Finished difference. Result has 258 places, 214 transitions, 2046 flow [2024-06-27 23:32:45,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1989, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2046, PETRI_PLACES=258, PETRI_TRANSITIONS=214} [2024-06-27 23:32:45,780 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 229 predicate places. [2024-06-27 23:32:45,780 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 214 transitions, 2046 flow [2024-06-27 23:32:45,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:45,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:45,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:45,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 23:32:45,781 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:45,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash 694633654, now seen corresponding path program 1 times [2024-06-27 23:32:45,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:45,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666839717] [2024-06-27 23:32:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:45,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:47,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:47,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:47,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666839717] [2024-06-27 23:32:47,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666839717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:47,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:47,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:32:47,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584637105] [2024-06-27 23:32:47,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:47,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:32:47,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:47,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:32:47,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:32:47,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:47,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 214 transitions, 2046 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:47,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:47,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:47,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:47,770 INFO L124 PetriNetUnfolderBase]: 597/1091 cut-off events. [2024-06-27 23:32:47,770 INFO L125 PetriNetUnfolderBase]: For 123663/123663 co-relation queries the response was YES. [2024-06-27 23:32:47,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7606 conditions, 1091 events. 597/1091 cut-off events. For 123663/123663 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5685 event pairs, 179 based on Foata normal form. 2/1092 useless extension candidates. Maximal degree in co-relation 7485. Up to 931 conditions per place. [2024-06-27 23:32:47,780 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 186 selfloop transitions, 42 changer transitions 0/230 dead transitions. [2024-06-27 23:32:47,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 230 transitions, 2564 flow [2024-06-27 23:32:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:32:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:32:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 23:32:47,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 23:32:47,781 INFO L175 Difference]: Start difference. First operand has 258 places, 214 transitions, 2046 flow. Second operand 11 states and 125 transitions. [2024-06-27 23:32:47,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 230 transitions, 2564 flow [2024-06-27 23:32:48,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 230 transitions, 2446 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:48,039 INFO L231 Difference]: Finished difference. Result has 254 places, 215 transitions, 2030 flow [2024-06-27 23:32:48,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2030, PETRI_PLACES=254, PETRI_TRANSITIONS=215} [2024-06-27 23:32:48,039 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 225 predicate places. [2024-06-27 23:32:48,039 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 215 transitions, 2030 flow [2024-06-27 23:32:48,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:48,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:48,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:48,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 23:32:48,040 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:48,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:48,040 INFO L85 PathProgramCache]: Analyzing trace with hash 694449080, now seen corresponding path program 14 times [2024-06-27 23:32:48,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:48,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435570677] [2024-06-27 23:32:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:48,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:49,718 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 23:32:49,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435570677] [2024-06-27 23:32:49,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435570677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:49,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:49,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:32:49,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327659137] [2024-06-27 23:32:49,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:49,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:32:49,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:49,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:32:49,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:32:49,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:49,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 215 transitions, 2030 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:49,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:49,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:49,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:50,482 INFO L124 PetriNetUnfolderBase]: 682/1270 cut-off events. [2024-06-27 23:32:50,482 INFO L125 PetriNetUnfolderBase]: For 237980/237980 co-relation queries the response was YES. [2024-06-27 23:32:50,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10317 conditions, 1270 events. 682/1270 cut-off events. For 237980/237980 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6979 event pairs, 234 based on Foata normal form. 8/1277 useless extension candidates. Maximal degree in co-relation 10197. Up to 962 conditions per place. [2024-06-27 23:32:50,493 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 195 selfloop transitions, 33 changer transitions 7/237 dead transitions. [2024-06-27 23:32:50,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 237 transitions, 2758 flow [2024-06-27 23:32:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:32:50,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:32:50,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 23:32:50,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2024-06-27 23:32:50,494 INFO L175 Difference]: Start difference. First operand has 254 places, 215 transitions, 2030 flow. Second operand 12 states and 139 transitions. [2024-06-27 23:32:50,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 237 transitions, 2758 flow [2024-06-27 23:32:50,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 237 transitions, 2666 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 23:32:50,958 INFO L231 Difference]: Finished difference. Result has 257 places, 213 transitions, 1984 flow [2024-06-27 23:32:50,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1938, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1984, PETRI_PLACES=257, PETRI_TRANSITIONS=213} [2024-06-27 23:32:50,959 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 228 predicate places. [2024-06-27 23:32:50,959 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 213 transitions, 1984 flow [2024-06-27 23:32:50,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:50,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:50,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:50,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 23:32:50,959 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:32:50,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:50,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1868027438, now seen corresponding path program 15 times [2024-06-27 23:32:50,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:50,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908586241] [2024-06-27 23:32:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:50,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:52,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:52,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:52,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908586241] [2024-06-27 23:32:52,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908586241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:52,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:52,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:32:52,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926454406] [2024-06-27 23:32:52,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:52,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:32:52,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:52,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:32:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:32:52,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:52,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 213 transitions, 1984 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:52,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:52,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:52,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:53,341 INFO L124 PetriNetUnfolderBase]: 651/1209 cut-off events. [2024-06-27 23:32:53,342 INFO L125 PetriNetUnfolderBase]: For 214633/214633 co-relation queries the response was YES. [2024-06-27 23:32:53,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9264 conditions, 1209 events. 651/1209 cut-off events. For 214633/214633 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6563 event pairs, 209 based on Foata normal form. 10/1218 useless extension candidates. Maximal degree in co-relation 9143. Up to 1005 conditions per place. [2024-06-27 23:32:53,353 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 181 selfloop transitions, 40 changer transitions 11/234 dead transitions. [2024-06-27 23:32:53,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 234 transitions, 2534 flow [2024-06-27 23:32:53,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:32:53,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:32:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 23:32:53,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:32:53,354 INFO L175 Difference]: Start difference. First operand has 257 places, 213 transitions, 1984 flow. Second operand 12 states and 138 transitions. [2024-06-27 23:32:53,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 234 transitions, 2534 flow [2024-06-27 23:32:53,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 234 transitions, 2469 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:32:53,752 INFO L231 Difference]: Finished difference. Result has 257 places, 210 transitions, 1969 flow [2024-06-27 23:32:53,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1969, PETRI_PLACES=257, PETRI_TRANSITIONS=210} [2024-06-27 23:32:53,752 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 228 predicate places. [2024-06-27 23:32:53,753 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 210 transitions, 1969 flow [2024-06-27 23:32:53,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:53,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:53,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:53,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 23:32:53,753 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 23:32:53,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash 528215300, now seen corresponding path program 16 times [2024-06-27 23:32:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755485286] [2024-06-27 23:32:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:55,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:55,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755485286] [2024-06-27 23:32:55,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755485286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:55,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:55,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766382860] [2024-06-27 23:32:55,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:55,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:55,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:55,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:55,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:55,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 210 transitions, 1969 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:55,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:55,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:55,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:56,073 INFO L124 PetriNetUnfolderBase]: 717/1351 cut-off events. [2024-06-27 23:32:56,073 INFO L125 PetriNetUnfolderBase]: For 309857/309857 co-relation queries the response was YES. [2024-06-27 23:32:56,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12088 conditions, 1351 events. 717/1351 cut-off events. For 309857/309857 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7602 event pairs, 267 based on Foata normal form. 8/1358 useless extension candidates. Maximal degree in co-relation 11967. Up to 1038 conditions per place. [2024-06-27 23:32:56,087 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 187 selfloop transitions, 37 changer transitions 7/233 dead transitions. [2024-06-27 23:32:56,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 233 transitions, 2707 flow [2024-06-27 23:32:56,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:32:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:32:56,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 23:32:56,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 23:32:56,088 INFO L175 Difference]: Start difference. First operand has 257 places, 210 transitions, 1969 flow. Second operand 11 states and 133 transitions. [2024-06-27 23:32:56,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 233 transitions, 2707 flow [2024-06-27 23:32:56,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 233 transitions, 2619 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 23:32:56,557 INFO L231 Difference]: Finished difference. Result has 255 places, 208 transitions, 1937 flow [2024-06-27 23:32:56,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1937, PETRI_PLACES=255, PETRI_TRANSITIONS=208} [2024-06-27 23:32:56,558 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 226 predicate places. [2024-06-27 23:32:56,558 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 208 transitions, 1937 flow [2024-06-27 23:32:56,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:56,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:56,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:56,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 23:32:56,559 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 23:32:56,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:56,559 INFO L85 PathProgramCache]: Analyzing trace with hash 701120404, now seen corresponding path program 2 times [2024-06-27 23:32:56,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:56,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087875211] [2024-06-27 23:32:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:56,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:32:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:32:58,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:32:58,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087875211] [2024-06-27 23:32:58,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087875211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:32:58,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:32:58,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:32:58,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268961318] [2024-06-27 23:32:58,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:32:58,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:32:58,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:32:58,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:32:58,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:32:58,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:32:58,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 208 transitions, 1937 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:58,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:32:58,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:32:58,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:32:58,903 INFO L124 PetriNetUnfolderBase]: 703/1321 cut-off events. [2024-06-27 23:32:58,903 INFO L125 PetriNetUnfolderBase]: For 287819/287819 co-relation queries the response was YES. [2024-06-27 23:32:58,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11969 conditions, 1321 events. 703/1321 cut-off events. For 287819/287819 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7409 event pairs, 255 based on Foata normal form. 2/1322 useless extension candidates. Maximal degree in co-relation 11848. Up to 1161 conditions per place. [2024-06-27 23:32:58,914 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 182 selfloop transitions, 42 changer transitions 0/226 dead transitions. [2024-06-27 23:32:58,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 226 transitions, 2453 flow [2024-06-27 23:32:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:32:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:32:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-06-27 23:32:58,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-06-27 23:32:58,915 INFO L175 Difference]: Start difference. First operand has 255 places, 208 transitions, 1937 flow. Second operand 13 states and 140 transitions. [2024-06-27 23:32:58,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 226 transitions, 2453 flow [2024-06-27 23:32:59,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 226 transitions, 2364 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:32:59,447 INFO L231 Difference]: Finished difference. Result has 256 places, 209 transitions, 1952 flow [2024-06-27 23:32:59,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1952, PETRI_PLACES=256, PETRI_TRANSITIONS=209} [2024-06-27 23:32:59,447 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-27 23:32:59,447 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 209 transitions, 1952 flow [2024-06-27 23:32:59,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:32:59,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:32:59,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:32:59,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 23:32:59,448 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 23:32:59,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:32:59,448 INFO L85 PathProgramCache]: Analyzing trace with hash 528399874, now seen corresponding path program 3 times [2024-06-27 23:32:59,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:32:59,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330447288] [2024-06-27 23:32:59,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:32:59,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:32:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:00,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:00,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330447288] [2024-06-27 23:33:00,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330447288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:00,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:00,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:33:00,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029518516] [2024-06-27 23:33:00,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:00,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:33:00,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:00,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:33:00,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:33:00,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:00,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 209 transitions, 1952 flow. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:00,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:00,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:00,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:01,339 INFO L124 PetriNetUnfolderBase]: 700/1316 cut-off events. [2024-06-27 23:33:01,340 INFO L125 PetriNetUnfolderBase]: For 280827/280827 co-relation queries the response was YES. [2024-06-27 23:33:01,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11787 conditions, 1316 events. 700/1316 cut-off events. For 280827/280827 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7379 event pairs, 252 based on Foata normal form. 2/1317 useless extension candidates. Maximal degree in co-relation 11667. Up to 1156 conditions per place. [2024-06-27 23:33:01,352 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 174 selfloop transitions, 48 changer transitions 0/224 dead transitions. [2024-06-27 23:33:01,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 224 transitions, 2458 flow [2024-06-27 23:33:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:33:01,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:33:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 23:33:01,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2024-06-27 23:33:01,353 INFO L175 Difference]: Start difference. First operand has 256 places, 209 transitions, 1952 flow. Second operand 10 states and 116 transitions. [2024-06-27 23:33:01,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 224 transitions, 2458 flow [2024-06-27 23:33:01,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 224 transitions, 2364 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 23:33:01,856 INFO L231 Difference]: Finished difference. Result has 255 places, 210 transitions, 1976 flow [2024-06-27 23:33:01,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1976, PETRI_PLACES=255, PETRI_TRANSITIONS=210} [2024-06-27 23:33:01,857 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 226 predicate places. [2024-06-27 23:33:01,857 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 210 transitions, 1976 flow [2024-06-27 23:33:01,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:01,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:01,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:01,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 23:33:01,858 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:01,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:01,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1701620678, now seen corresponding path program 17 times [2024-06-27 23:33:01,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:01,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772229322] [2024-06-27 23:33:01,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:01,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:03,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:03,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772229322] [2024-06-27 23:33:03,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772229322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:03,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:03,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:03,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930162393] [2024-06-27 23:33:03,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:03,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:03,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:03,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:03,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 210 transitions, 1976 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:03,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:03,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:03,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:03,846 INFO L124 PetriNetUnfolderBase]: 687/1293 cut-off events. [2024-06-27 23:33:03,847 INFO L125 PetriNetUnfolderBase]: For 279130/279130 co-relation queries the response was YES. [2024-06-27 23:33:03,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10927 conditions, 1293 events. 687/1293 cut-off events. For 279130/279130 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 7222 event pairs, 264 based on Foata normal form. 10/1302 useless extension candidates. Maximal degree in co-relation 10806. Up to 1159 conditions per place. [2024-06-27 23:33:03,859 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 176 selfloop transitions, 36 changer transitions 13/227 dead transitions. [2024-06-27 23:33:03,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 227 transitions, 2490 flow [2024-06-27 23:33:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:33:03,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:33:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 23:33:03,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-06-27 23:33:03,860 INFO L175 Difference]: Start difference. First operand has 255 places, 210 transitions, 1976 flow. Second operand 10 states and 122 transitions. [2024-06-27 23:33:03,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 227 transitions, 2490 flow [2024-06-27 23:33:04,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 227 transitions, 2382 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 23:33:04,402 INFO L231 Difference]: Finished difference. Result has 257 places, 206 transitions, 1894 flow [2024-06-27 23:33:04,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1868, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1894, PETRI_PLACES=257, PETRI_TRANSITIONS=206} [2024-06-27 23:33:04,403 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 228 predicate places. [2024-06-27 23:33:04,403 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 206 transitions, 1894 flow [2024-06-27 23:33:04,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:04,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:04,404 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 23:33:04,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 23:33:04,404 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:04,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1874283548, now seen corresponding path program 18 times [2024-06-27 23:33:04,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:04,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458184101] [2024-06-27 23:33:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:04,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:05,931 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 23:33:05,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:05,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458184101] [2024-06-27 23:33:05,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458184101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:05,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:05,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025076443] [2024-06-27 23:33:05,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:05,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:05,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:05,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:06,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:06,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 206 transitions, 1894 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:06,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:06,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:06,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:06,754 INFO L124 PetriNetUnfolderBase]: 678/1278 cut-off events. [2024-06-27 23:33:06,755 INFO L125 PetriNetUnfolderBase]: For 286215/286215 co-relation queries the response was YES. [2024-06-27 23:33:06,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10816 conditions, 1278 events. 678/1278 cut-off events. For 286215/286215 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 7105 event pairs, 237 based on Foata normal form. 10/1287 useless extension candidates. Maximal degree in co-relation 10694. Up to 1074 conditions per place. [2024-06-27 23:33:06,766 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 177 selfloop transitions, 39 changer transitions 11/229 dead transitions. [2024-06-27 23:33:06,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 229 transitions, 2438 flow [2024-06-27 23:33:06,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 23:33:06,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 23:33:06,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 153 transitions. [2024-06-27 23:33:06,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36428571428571427 [2024-06-27 23:33:06,768 INFO L175 Difference]: Start difference. First operand has 257 places, 206 transitions, 1894 flow. Second operand 14 states and 153 transitions. [2024-06-27 23:33:06,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 229 transitions, 2438 flow [2024-06-27 23:33:07,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 229 transitions, 2352 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 23:33:07,271 INFO L231 Difference]: Finished difference. Result has 259 places, 203 transitions, 1858 flow [2024-06-27 23:33:07,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1858, PETRI_PLACES=259, PETRI_TRANSITIONS=203} [2024-06-27 23:33:07,282 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 230 predicate places. [2024-06-27 23:33:07,283 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 203 transitions, 1858 flow [2024-06-27 23:33:07,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:07,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:07,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:07,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 23:33:07,283 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:07,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:07,284 INFO L85 PathProgramCache]: Analyzing trace with hash 701128774, now seen corresponding path program 4 times [2024-06-27 23:33:07,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:07,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290895341] [2024-06-27 23:33:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:07,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:08,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:08,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290895341] [2024-06-27 23:33:08,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290895341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:08,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:08,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:08,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913352360] [2024-06-27 23:33:08,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:08,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:08,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:08,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:08,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:08,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:08,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 203 transitions, 1858 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:08,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:08,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:08,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:09,499 INFO L124 PetriNetUnfolderBase]: 656/1236 cut-off events. [2024-06-27 23:33:09,499 INFO L125 PetriNetUnfolderBase]: For 256103/256103 co-relation queries the response was YES. [2024-06-27 23:33:09,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10673 conditions, 1236 events. 656/1236 cut-off events. For 256103/256103 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6843 event pairs, 229 based on Foata normal form. 2/1237 useless extension candidates. Maximal degree in co-relation 10551. Up to 1050 conditions per place. [2024-06-27 23:33:09,511 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 175 selfloop transitions, 44 changer transitions 0/221 dead transitions. [2024-06-27 23:33:09,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 221 transitions, 2364 flow [2024-06-27 23:33:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:33:09,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:33:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-06-27 23:33:09,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.358974358974359 [2024-06-27 23:33:09,513 INFO L175 Difference]: Start difference. First operand has 259 places, 203 transitions, 1858 flow. Second operand 13 states and 140 transitions. [2024-06-27 23:33:09,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 221 transitions, 2364 flow [2024-06-27 23:33:10,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 221 transitions, 2280 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 23:33:10,043 INFO L231 Difference]: Finished difference. Result has 257 places, 204 transitions, 1886 flow [2024-06-27 23:33:10,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1886, PETRI_PLACES=257, PETRI_TRANSITIONS=204} [2024-06-27 23:33:10,048 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 228 predicate places. [2024-06-27 23:33:10,048 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 204 transitions, 1886 flow [2024-06-27 23:33:10,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:10,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:10,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:10,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 23:33:10,049 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:10,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:10,049 INFO L85 PathProgramCache]: Analyzing trace with hash 528392930, now seen corresponding path program 19 times [2024-06-27 23:33:10,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:10,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095521870] [2024-06-27 23:33:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:10,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:11,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:11,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095521870] [2024-06-27 23:33:11,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095521870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:11,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:11,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:11,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540135947] [2024-06-27 23:33:11,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:11,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:11,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:11,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:11,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:11,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:11,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 204 transitions, 1886 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:11,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:11,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:11,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:12,299 INFO L124 PetriNetUnfolderBase]: 643/1213 cut-off events. [2024-06-27 23:33:12,300 INFO L125 PetriNetUnfolderBase]: For 248039/248039 co-relation queries the response was YES. [2024-06-27 23:33:12,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9751 conditions, 1213 events. 643/1213 cut-off events. For 248039/248039 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6712 event pairs, 226 based on Foata normal form. 10/1222 useless extension candidates. Maximal degree in co-relation 9629. Up to 1009 conditions per place. [2024-06-27 23:33:12,309 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 167 selfloop transitions, 44 changer transitions 11/224 dead transitions. [2024-06-27 23:33:12,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 224 transitions, 2412 flow [2024-06-27 23:33:12,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:33:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:33:12,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:33:12,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 23:33:12,310 INFO L175 Difference]: Start difference. First operand has 257 places, 204 transitions, 1886 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:33:12,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 224 transitions, 2412 flow [2024-06-27 23:33:12,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 224 transitions, 2310 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-27 23:33:12,758 INFO L231 Difference]: Finished difference. Result has 257 places, 201 transitions, 1842 flow [2024-06-27 23:33:12,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1842, PETRI_PLACES=257, PETRI_TRANSITIONS=201} [2024-06-27 23:33:12,759 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 228 predicate places. [2024-06-27 23:33:12,759 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 201 transitions, 1842 flow [2024-06-27 23:33:12,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:12,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:12,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:12,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 23:33:12,759 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:12,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:12,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1867854458, now seen corresponding path program 20 times [2024-06-27 23:33:12,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:12,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924007848] [2024-06-27 23:33:12,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:12,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:14,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:14,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924007848] [2024-06-27 23:33:14,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924007848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:14,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:14,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868296795] [2024-06-27 23:33:14,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:14,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:14,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:14,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:14,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:14,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 201 transitions, 1842 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:14,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:14,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:14,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:14,810 INFO L124 PetriNetUnfolderBase]: 604/1140 cut-off events. [2024-06-27 23:33:14,810 INFO L125 PetriNetUnfolderBase]: For 214181/214181 co-relation queries the response was YES. [2024-06-27 23:33:14,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8609 conditions, 1140 events. 604/1140 cut-off events. For 214181/214181 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6165 event pairs, 222 based on Foata normal form. 10/1149 useless extension candidates. Maximal degree in co-relation 8486. Up to 1006 conditions per place. [2024-06-27 23:33:14,820 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 173 selfloop transitions, 30 changer transitions 13/218 dead transitions. [2024-06-27 23:33:14,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 218 transitions, 2336 flow [2024-06-27 23:33:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:33:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:33:14,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 23:33:14,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-27 23:33:14,821 INFO L175 Difference]: Start difference. First operand has 257 places, 201 transitions, 1842 flow. Second operand 11 states and 127 transitions. [2024-06-27 23:33:14,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 218 transitions, 2336 flow [2024-06-27 23:33:15,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 218 transitions, 2242 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:15,264 INFO L231 Difference]: Finished difference. Result has 256 places, 197 transitions, 1761 flow [2024-06-27 23:33:15,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1761, PETRI_PLACES=256, PETRI_TRANSITIONS=197} [2024-06-27 23:33:15,265 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 227 predicate places. [2024-06-27 23:33:15,265 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 197 transitions, 1761 flow [2024-06-27 23:33:15,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:15,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:15,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:15,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 23:33:15,266 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:15,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:15,266 INFO L85 PathProgramCache]: Analyzing trace with hash 179185292, now seen corresponding path program 5 times [2024-06-27 23:33:15,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:15,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353707497] [2024-06-27 23:33:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:15,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:16,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:16,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353707497] [2024-06-27 23:33:16,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353707497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:16,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:16,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:16,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131201238] [2024-06-27 23:33:16,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:16,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:16,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:16,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:16,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:16,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:16,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 197 transitions, 1761 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:16,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:16,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:16,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:17,518 INFO L124 PetriNetUnfolderBase]: 583/1096 cut-off events. [2024-06-27 23:33:17,519 INFO L125 PetriNetUnfolderBase]: For 182789/182789 co-relation queries the response was YES. [2024-06-27 23:33:17,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8395 conditions, 1096 events. 583/1096 cut-off events. For 182789/182789 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5853 event pairs, 208 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 8272. Up to 1031 conditions per place. [2024-06-27 23:33:17,527 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 183 selfloop transitions, 25 changer transitions 0/210 dead transitions. [2024-06-27 23:33:17,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 210 transitions, 2231 flow [2024-06-27 23:33:17,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:33:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:33:17,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 23:33:17,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-27 23:33:17,528 INFO L175 Difference]: Start difference. First operand has 256 places, 197 transitions, 1761 flow. Second operand 11 states and 118 transitions. [2024-06-27 23:33:17,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 210 transitions, 2231 flow [2024-06-27 23:33:17,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 210 transitions, 2129 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 23:33:17,936 INFO L231 Difference]: Finished difference. Result has 252 places, 198 transitions, 1735 flow [2024-06-27 23:33:17,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1735, PETRI_PLACES=252, PETRI_TRANSITIONS=198} [2024-06-27 23:33:17,936 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 223 predicate places. [2024-06-27 23:33:17,936 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 198 transitions, 1735 flow [2024-06-27 23:33:17,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:17,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:17,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:17,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 23:33:17,937 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:17,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:17,937 INFO L85 PathProgramCache]: Analyzing trace with hash -702616966, now seen corresponding path program 21 times [2024-06-27 23:33:17,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:17,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557269040] [2024-06-27 23:33:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:17,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:19,474 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 23:33:19,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:19,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557269040] [2024-06-27 23:33:19,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557269040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:19,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:19,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:33:19,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108936107] [2024-06-27 23:33:19,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:19,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:33:19,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:19,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:33:19,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:33:19,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:19,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 198 transitions, 1735 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:19,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:19,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:19,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:20,107 INFO L124 PetriNetUnfolderBase]: 599/1132 cut-off events. [2024-06-27 23:33:20,107 INFO L125 PetriNetUnfolderBase]: For 214173/214173 co-relation queries the response was YES. [2024-06-27 23:33:20,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8439 conditions, 1132 events. 599/1132 cut-off events. For 214173/214173 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6113 event pairs, 218 based on Foata normal form. 10/1141 useless extension candidates. Maximal degree in co-relation 8318. Up to 1032 conditions per place. [2024-06-27 23:33:20,117 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 173 selfloop transitions, 29 changer transitions 11/215 dead transitions. [2024-06-27 23:33:20,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 215 transitions, 2225 flow [2024-06-27 23:33:20,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:33:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:33:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 23:33:20,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:33:20,119 INFO L175 Difference]: Start difference. First operand has 252 places, 198 transitions, 1735 flow. Second operand 12 states and 132 transitions. [2024-06-27 23:33:20,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 215 transitions, 2225 flow [2024-06-27 23:33:20,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 215 transitions, 2159 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:20,521 INFO L231 Difference]: Finished difference. Result has 255 places, 195 transitions, 1702 flow [2024-06-27 23:33:20,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1702, PETRI_PLACES=255, PETRI_TRANSITIONS=195} [2024-06-27 23:33:20,521 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 226 predicate places. [2024-06-27 23:33:20,521 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 195 transitions, 1702 flow [2024-06-27 23:33:20,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:20,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:20,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:20,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 23:33:20,522 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:20,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:20,522 INFO L85 PathProgramCache]: Analyzing trace with hash -672110096, now seen corresponding path program 6 times [2024-06-27 23:33:20,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:20,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408177454] [2024-06-27 23:33:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:20,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:22,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:22,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408177454] [2024-06-27 23:33:22,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408177454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:22,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:22,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689889238] [2024-06-27 23:33:22,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:22,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:22,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:22,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:22,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:22,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:22,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 195 transitions, 1702 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:22,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:22,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:22,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:22,759 INFO L124 PetriNetUnfolderBase]: 579/1092 cut-off events. [2024-06-27 23:33:22,759 INFO L125 PetriNetUnfolderBase]: For 186883/186883 co-relation queries the response was YES. [2024-06-27 23:33:22,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8328 conditions, 1092 events. 579/1092 cut-off events. For 186883/186883 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5835 event pairs, 206 based on Foata normal form. 2/1093 useless extension candidates. Maximal degree in co-relation 8206. Up to 1023 conditions per place. [2024-06-27 23:33:22,770 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 180 selfloop transitions, 28 changer transitions 0/210 dead transitions. [2024-06-27 23:33:22,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 210 transitions, 2186 flow [2024-06-27 23:33:22,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:33:22,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:33:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 23:33:22,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:33:22,771 INFO L175 Difference]: Start difference. First operand has 255 places, 195 transitions, 1702 flow. Second operand 10 states and 115 transitions. [2024-06-27 23:33:22,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 210 transitions, 2186 flow [2024-06-27 23:33:23,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 210 transitions, 2124 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:33:23,194 INFO L231 Difference]: Finished difference. Result has 251 places, 196 transitions, 1724 flow [2024-06-27 23:33:23,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1724, PETRI_PLACES=251, PETRI_TRANSITIONS=196} [2024-06-27 23:33:23,194 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2024-06-27 23:33:23,194 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 196 transitions, 1724 flow [2024-06-27 23:33:23,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:23,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:23,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:23,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 23:33:23,195 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:23,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:23,195 INFO L85 PathProgramCache]: Analyzing trace with hash -672294670, now seen corresponding path program 22 times [2024-06-27 23:33:23,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:23,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080128946] [2024-06-27 23:33:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:23,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:24,943 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 23:33:24,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:24,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080128946] [2024-06-27 23:33:24,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080128946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:24,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:24,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:33:24,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667497163] [2024-06-27 23:33:24,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:24,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:33:24,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:24,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:33:24,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:33:25,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:25,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 196 transitions, 1724 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:25,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:25,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:25,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:25,768 INFO L124 PetriNetUnfolderBase]: 649/1238 cut-off events. [2024-06-27 23:33:25,768 INFO L125 PetriNetUnfolderBase]: For 285450/285450 co-relation queries the response was YES. [2024-06-27 23:33:25,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10523 conditions, 1238 events. 649/1238 cut-off events. For 285450/285450 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6913 event pairs, 226 based on Foata normal form. 8/1245 useless extension candidates. Maximal degree in co-relation 10402. Up to 976 conditions per place. [2024-06-27 23:33:25,777 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 179 selfloop transitions, 32 changer transitions 7/220 dead transitions. [2024-06-27 23:33:25,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 220 transitions, 2440 flow [2024-06-27 23:33:25,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:33:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:33:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 23:33:25,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 23:33:25,779 INFO L175 Difference]: Start difference. First operand has 251 places, 196 transitions, 1724 flow. Second operand 12 states and 138 transitions. [2024-06-27 23:33:25,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 220 transitions, 2440 flow [2024-06-27 23:33:26,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 220 transitions, 2366 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 23:33:26,399 INFO L231 Difference]: Finished difference. Result has 255 places, 194 transitions, 1700 flow [2024-06-27 23:33:26,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1700, PETRI_PLACES=255, PETRI_TRANSITIONS=194} [2024-06-27 23:33:26,399 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 226 predicate places. [2024-06-27 23:33:26,400 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 194 transitions, 1700 flow [2024-06-27 23:33:26,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:26,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:26,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:26,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 23:33:26,400 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:26,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:26,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2003744092, now seen corresponding path program 7 times [2024-06-27 23:33:26,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:26,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434798614] [2024-06-27 23:33:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:26,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:27,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:27,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434798614] [2024-06-27 23:33:27,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434798614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:27,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:27,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:27,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016197652] [2024-06-27 23:33:27,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:27,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:27,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:27,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:27,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:27,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:27,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 194 transitions, 1700 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:27,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:27,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:27,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:28,390 INFO L124 PetriNetUnfolderBase]: 635/1208 cut-off events. [2024-06-27 23:33:28,391 INFO L125 PetriNetUnfolderBase]: For 267493/267493 co-relation queries the response was YES. [2024-06-27 23:33:28,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10496 conditions, 1208 events. 635/1208 cut-off events. For 267493/267493 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6674 event pairs, 252 based on Foata normal form. 2/1209 useless extension candidates. Maximal degree in co-relation 10374. Up to 1169 conditions per place. [2024-06-27 23:33:28,402 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 184 selfloop transitions, 19 changer transitions 0/205 dead transitions. [2024-06-27 23:33:28,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 205 transitions, 2152 flow [2024-06-27 23:33:28,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:33:28,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:33:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 23:33:28,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424242424242424 [2024-06-27 23:33:28,403 INFO L175 Difference]: Start difference. First operand has 255 places, 194 transitions, 1700 flow. Second operand 11 states and 113 transitions. [2024-06-27 23:33:28,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 205 transitions, 2152 flow [2024-06-27 23:33:28,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 205 transitions, 2090 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:33:28,974 INFO L231 Difference]: Finished difference. Result has 253 places, 195 transitions, 1706 flow [2024-06-27 23:33:28,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1706, PETRI_PLACES=253, PETRI_TRANSITIONS=195} [2024-06-27 23:33:28,974 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 224 predicate places. [2024-06-27 23:33:28,975 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 195 transitions, 1706 flow [2024-06-27 23:33:28,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:28,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:28,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:28,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 23:33:28,975 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:28,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash 375899940, now seen corresponding path program 8 times [2024-06-27 23:33:28,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:28,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392004630] [2024-06-27 23:33:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:30,481 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 23:33:30,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:30,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392004630] [2024-06-27 23:33:30,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392004630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:30,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:30,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:30,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990855540] [2024-06-27 23:33:30,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:30,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:30,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:30,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:30,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:30,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:30,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 195 transitions, 1706 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:30,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:30,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:30,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:30,923 INFO L124 PetriNetUnfolderBase]: 639/1216 cut-off events. [2024-06-27 23:33:30,923 INFO L125 PetriNetUnfolderBase]: For 261885/261885 co-relation queries the response was YES. [2024-06-27 23:33:30,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10485 conditions, 1216 events. 639/1216 cut-off events. For 261885/261885 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6747 event pairs, 246 based on Foata normal form. 2/1217 useless extension candidates. Maximal degree in co-relation 10364. Up to 1151 conditions per place. [2024-06-27 23:33:30,933 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 180 selfloop transitions, 27 changer transitions 0/209 dead transitions. [2024-06-27 23:33:30,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 209 transitions, 2186 flow [2024-06-27 23:33:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:33:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:33:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 23:33:30,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-27 23:33:30,934 INFO L175 Difference]: Start difference. First operand has 253 places, 195 transitions, 1706 flow. Second operand 11 states and 117 transitions. [2024-06-27 23:33:30,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 209 transitions, 2186 flow [2024-06-27 23:33:31,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 209 transitions, 2095 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-27 23:33:31,509 INFO L231 Difference]: Finished difference. Result has 252 places, 196 transitions, 1701 flow [2024-06-27 23:33:31,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1701, PETRI_PLACES=252, PETRI_TRANSITIONS=196} [2024-06-27 23:33:31,509 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 223 predicate places. [2024-06-27 23:33:31,510 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 196 transitions, 1701 flow [2024-06-27 23:33:31,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:31,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:31,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:31,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 23:33:31,510 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:31,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:31,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1341434398, now seen corresponding path program 23 times [2024-06-27 23:33:31,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:31,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000403627] [2024-06-27 23:33:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:31,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:33,139 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 23:33:33,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:33,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000403627] [2024-06-27 23:33:33,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000403627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:33,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:33,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:33:33,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725529233] [2024-06-27 23:33:33,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:33,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:33:33,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:33,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:33:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:33:33,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:33,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 196 transitions, 1701 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:33,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:33,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:33,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:33,889 INFO L124 PetriNetUnfolderBase]: 626/1193 cut-off events. [2024-06-27 23:33:33,890 INFO L125 PetriNetUnfolderBase]: For 259479/259479 co-relation queries the response was YES. [2024-06-27 23:33:33,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9552 conditions, 1193 events. 626/1193 cut-off events. For 259479/259479 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 6607 event pairs, 237 based on Foata normal form. 10/1202 useless extension candidates. Maximal degree in co-relation 9430. Up to 1102 conditions per place. [2024-06-27 23:33:33,900 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 175 selfloop transitions, 22 changer transitions 13/212 dead transitions. [2024-06-27 23:33:33,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 212 transitions, 2179 flow [2024-06-27 23:33:33,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:33:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:33:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 23:33:33,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 23:33:33,902 INFO L175 Difference]: Start difference. First operand has 252 places, 196 transitions, 1701 flow. Second operand 12 states and 129 transitions. [2024-06-27 23:33:33,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 212 transitions, 2179 flow [2024-06-27 23:33:34,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 212 transitions, 2103 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:34,449 INFO L231 Difference]: Finished difference. Result has 255 places, 192 transitions, 1631 flow [2024-06-27 23:33:34,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1631, PETRI_PLACES=255, PETRI_TRANSITIONS=192} [2024-06-27 23:33:34,450 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 226 predicate places. [2024-06-27 23:33:34,450 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 192 transitions, 1631 flow [2024-06-27 23:33:34,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:34,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:34,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:34,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 23:33:34,451 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:34,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:34,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1341261418, now seen corresponding path program 24 times [2024-06-27 23:33:34,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:34,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514752894] [2024-06-27 23:33:34,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:34,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:36,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:36,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514752894] [2024-06-27 23:33:36,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514752894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:36,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:36,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:33:36,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505596799] [2024-06-27 23:33:36,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:36,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:33:36,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:36,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:33:36,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:33:36,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:36,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 192 transitions, 1631 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:36,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:36,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:36,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:36,912 INFO L124 PetriNetUnfolderBase]: 617/1178 cut-off events. [2024-06-27 23:33:36,913 INFO L125 PetriNetUnfolderBase]: For 264841/264841 co-relation queries the response was YES. [2024-06-27 23:33:36,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9449 conditions, 1178 events. 617/1178 cut-off events. For 264841/264841 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6509 event pairs, 231 based on Foata normal form. 10/1187 useless extension candidates. Maximal degree in co-relation 9326. Up to 1065 conditions per place. [2024-06-27 23:33:36,923 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 174 selfloop transitions, 25 changer transitions 11/212 dead transitions. [2024-06-27 23:33:36,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 212 transitions, 2133 flow [2024-06-27 23:33:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:33:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:33:36,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 23:33:36,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-27 23:33:36,925 INFO L175 Difference]: Start difference. First operand has 255 places, 192 transitions, 1631 flow. Second operand 12 states and 134 transitions. [2024-06-27 23:33:36,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 212 transitions, 2133 flow [2024-06-27 23:33:37,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 212 transitions, 2083 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:33:37,387 INFO L231 Difference]: Finished difference. Result has 251 places, 189 transitions, 1606 flow [2024-06-27 23:33:37,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1606, PETRI_PLACES=251, PETRI_TRANSITIONS=189} [2024-06-27 23:33:37,387 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 222 predicate places. [2024-06-27 23:33:37,388 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 189 transitions, 1606 flow [2024-06-27 23:33:37,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:37,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:37,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:37,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 23:33:37,388 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:37,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:37,389 INFO L85 PathProgramCache]: Analyzing trace with hash -702443986, now seen corresponding path program 25 times [2024-06-27 23:33:37,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:37,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143874680] [2024-06-27 23:33:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:37,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:38,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:38,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143874680] [2024-06-27 23:33:38,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143874680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:38,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:38,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:38,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275567112] [2024-06-27 23:33:38,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:38,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:38,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:38,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:38,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:38,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:38,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 189 transitions, 1606 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:38,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:38,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:38,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:39,484 INFO L124 PetriNetUnfolderBase]: 607/1164 cut-off events. [2024-06-27 23:33:39,484 INFO L125 PetriNetUnfolderBase]: For 253375/253375 co-relation queries the response was YES. [2024-06-27 23:33:39,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9269 conditions, 1164 events. 607/1164 cut-off events. For 253375/253375 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6446 event pairs, 231 based on Foata normal form. 10/1173 useless extension candidates. Maximal degree in co-relation 9148. Up to 1055 conditions per place. [2024-06-27 23:33:39,495 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 170 selfloop transitions, 25 changer transitions 11/208 dead transitions. [2024-06-27 23:33:39,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 208 transitions, 2094 flow [2024-06-27 23:33:39,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:33:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:33:39,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 23:33:39,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-27 23:33:39,501 INFO L175 Difference]: Start difference. First operand has 251 places, 189 transitions, 1606 flow. Second operand 12 states and 130 transitions. [2024-06-27 23:33:39,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 208 transitions, 2094 flow [2024-06-27 23:33:39,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 208 transitions, 2040 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:33:39,971 INFO L231 Difference]: Finished difference. Result has 249 places, 186 transitions, 1577 flow [2024-06-27 23:33:39,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1577, PETRI_PLACES=249, PETRI_TRANSITIONS=186} [2024-06-27 23:33:39,971 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 220 predicate places. [2024-06-27 23:33:39,971 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 186 transitions, 1577 flow [2024-06-27 23:33:39,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:39,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:39,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:39,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 23:33:39,972 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:39,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:39,973 INFO L85 PathProgramCache]: Analyzing trace with hash 21079962, now seen corresponding path program 26 times [2024-06-27 23:33:39,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:39,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39747131] [2024-06-27 23:33:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:39,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:41,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:41,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39747131] [2024-06-27 23:33:41,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39747131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:41,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:41,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:41,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330059647] [2024-06-27 23:33:41,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:41,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:41,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:41,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:41,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:41,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:41,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 186 transitions, 1577 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:41,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:41,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:41,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:42,151 INFO L124 PetriNetUnfolderBase]: 593/1142 cut-off events. [2024-06-27 23:33:42,151 INFO L125 PetriNetUnfolderBase]: For 239941/239941 co-relation queries the response was YES. [2024-06-27 23:33:42,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9108 conditions, 1142 events. 593/1142 cut-off events. For 239941/239941 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6299 event pairs, 215 based on Foata normal form. 8/1149 useless extension candidates. Maximal degree in co-relation 8988. Up to 875 conditions per place. [2024-06-27 23:33:42,161 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 163 selfloop transitions, 36 changer transitions 8/209 dead transitions. [2024-06-27 23:33:42,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 209 transitions, 2263 flow [2024-06-27 23:33:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:33:42,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:33:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 23:33:42,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 23:33:42,163 INFO L175 Difference]: Start difference. First operand has 249 places, 186 transitions, 1577 flow. Second operand 11 states and 128 transitions. [2024-06-27 23:33:42,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 209 transitions, 2263 flow [2024-06-27 23:33:42,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 209 transitions, 2205 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:33:42,611 INFO L231 Difference]: Finished difference. Result has 246 places, 183 transitions, 1566 flow [2024-06-27 23:33:42,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1566, PETRI_PLACES=246, PETRI_TRANSITIONS=183} [2024-06-27 23:33:42,611 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2024-06-27 23:33:42,611 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 183 transitions, 1566 flow [2024-06-27 23:33:42,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:42,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:42,612 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 23:33:42,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 23:33:42,612 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:42,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:42,612 INFO L85 PathProgramCache]: Analyzing trace with hash 560117728, now seen corresponding path program 27 times [2024-06-27 23:33:42,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:42,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646161378] [2024-06-27 23:33:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:42,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:44,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:44,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646161378] [2024-06-27 23:33:44,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646161378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:44,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:44,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076105617] [2024-06-27 23:33:44,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:44,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:44,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:44,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:44,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:44,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:44,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 183 transitions, 1566 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:44,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:44,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:44,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:44,792 INFO L124 PetriNetUnfolderBase]: 583/1124 cut-off events. [2024-06-27 23:33:44,793 INFO L125 PetriNetUnfolderBase]: For 234655/234655 co-relation queries the response was YES. [2024-06-27 23:33:44,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8831 conditions, 1124 events. 583/1124 cut-off events. For 234655/234655 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6198 event pairs, 222 based on Foata normal form. 10/1133 useless extension candidates. Maximal degree in co-relation 8712. Up to 1015 conditions per place. [2024-06-27 23:33:44,801 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 167 selfloop transitions, 21 changer transitions 11/201 dead transitions. [2024-06-27 23:33:44,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 201 transitions, 2034 flow [2024-06-27 23:33:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:33:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:33:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 23:33:44,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-27 23:33:44,802 INFO L175 Difference]: Start difference. First operand has 246 places, 183 transitions, 1566 flow. Second operand 12 states and 130 transitions. [2024-06-27 23:33:44,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 201 transitions, 2034 flow [2024-06-27 23:33:45,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 201 transitions, 1964 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:33:45,261 INFO L231 Difference]: Finished difference. Result has 244 places, 180 transitions, 1511 flow [2024-06-27 23:33:45,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1511, PETRI_PLACES=244, PETRI_TRANSITIONS=180} [2024-06-27 23:33:45,261 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 215 predicate places. [2024-06-27 23:33:45,261 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 180 transitions, 1511 flow [2024-06-27 23:33:45,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:45,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:45,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:45,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 23:33:45,262 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:45,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1689403128, now seen corresponding path program 9 times [2024-06-27 23:33:45,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:45,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735816685] [2024-06-27 23:33:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:45,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:46,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:46,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735816685] [2024-06-27 23:33:46,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735816685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:46,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:46,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:46,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631618441] [2024-06-27 23:33:46,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:46,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:46,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:46,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:46,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:47,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:47,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 180 transitions, 1511 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:47,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:47,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:47,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:47,610 INFO L124 PetriNetUnfolderBase]: 561/1082 cut-off events. [2024-06-27 23:33:47,610 INFO L125 PetriNetUnfolderBase]: For 195916/195916 co-relation queries the response was YES. [2024-06-27 23:33:47,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8579 conditions, 1082 events. 561/1082 cut-off events. For 195916/195916 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5895 event pairs, 216 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 8462. Up to 1013 conditions per place. [2024-06-27 23:33:47,619 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 168 selfloop transitions, 27 changer transitions 0/197 dead transitions. [2024-06-27 23:33:47,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 197 transitions, 1979 flow [2024-06-27 23:33:47,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:33:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:33:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 135 transitions. [2024-06-27 23:33:47,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2024-06-27 23:33:47,620 INFO L175 Difference]: Start difference. First operand has 244 places, 180 transitions, 1511 flow. Second operand 13 states and 135 transitions. [2024-06-27 23:33:47,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 197 transitions, 1979 flow [2024-06-27 23:33:48,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 197 transitions, 1933 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 23:33:48,056 INFO L231 Difference]: Finished difference. Result has 243 places, 181 transitions, 1553 flow [2024-06-27 23:33:48,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1553, PETRI_PLACES=243, PETRI_TRANSITIONS=181} [2024-06-27 23:33:48,056 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 214 predicate places. [2024-06-27 23:33:48,056 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 181 transitions, 1553 flow [2024-06-27 23:33:48,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:48,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:48,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:48,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 23:33:48,057 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:48,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1157036686, now seen corresponding path program 28 times [2024-06-27 23:33:48,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:48,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485805368] [2024-06-27 23:33:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:50,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:50,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485805368] [2024-06-27 23:33:50,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485805368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:50,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:50,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:33:50,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004604157] [2024-06-27 23:33:50,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:50,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:33:50,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:50,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:33:50,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:33:50,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:50,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 181 transitions, 1553 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:50,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:50,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:50,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:50,621 INFO L124 PetriNetUnfolderBase]: 548/1059 cut-off events. [2024-06-27 23:33:50,622 INFO L125 PetriNetUnfolderBase]: For 184381/184381 co-relation queries the response was YES. [2024-06-27 23:33:50,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7648 conditions, 1059 events. 548/1059 cut-off events. For 184381/184381 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5776 event pairs, 203 based on Foata normal form. 10/1068 useless extension candidates. Maximal degree in co-relation 7532. Up to 955 conditions per place. [2024-06-27 23:33:50,631 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 164 selfloop transitions, 23 changer transitions 11/200 dead transitions. [2024-06-27 23:33:50,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 200 transitions, 2021 flow [2024-06-27 23:33:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:33:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:33:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 138 transitions. [2024-06-27 23:33:50,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35384615384615387 [2024-06-27 23:33:50,632 INFO L175 Difference]: Start difference. First operand has 243 places, 181 transitions, 1553 flow. Second operand 13 states and 138 transitions. [2024-06-27 23:33:50,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 200 transitions, 2021 flow [2024-06-27 23:33:51,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 200 transitions, 1943 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-27 23:33:51,011 INFO L231 Difference]: Finished difference. Result has 245 places, 178 transitions, 1496 flow [2024-06-27 23:33:51,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1496, PETRI_PLACES=245, PETRI_TRANSITIONS=178} [2024-06-27 23:33:51,012 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 216 predicate places. [2024-06-27 23:33:51,012 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 178 transitions, 1496 flow [2024-06-27 23:33:51,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:51,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:51,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:51,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 23:33:51,013 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:51,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:51,013 INFO L85 PathProgramCache]: Analyzing trace with hash 27759656, now seen corresponding path program 10 times [2024-06-27 23:33:51,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:51,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701278274] [2024-06-27 23:33:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:51,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:52,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:52,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701278274] [2024-06-27 23:33:52,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701278274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:52,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:52,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:33:52,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176460284] [2024-06-27 23:33:52,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:52,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:33:52,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:52,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:33:52,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:33:52,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:52,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 178 transitions, 1496 flow. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:52,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:52,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:52,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:53,059 INFO L124 PetriNetUnfolderBase]: 526/1017 cut-off events. [2024-06-27 23:33:53,059 INFO L125 PetriNetUnfolderBase]: For 160348/160348 co-relation queries the response was YES. [2024-06-27 23:33:53,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7505 conditions, 1017 events. 526/1017 cut-off events. For 160348/160348 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5480 event pairs, 195 based on Foata normal form. 2/1018 useless extension candidates. Maximal degree in co-relation 7388. Up to 932 conditions per place. [2024-06-27 23:33:53,069 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 165 selfloop transitions, 24 changer transitions 0/191 dead transitions. [2024-06-27 23:33:53,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 191 transitions, 1934 flow [2024-06-27 23:33:53,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:33:53,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:33:53,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 23:33:53,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35454545454545455 [2024-06-27 23:33:53,070 INFO L175 Difference]: Start difference. First operand has 245 places, 178 transitions, 1496 flow. Second operand 11 states and 117 transitions. [2024-06-27 23:33:53,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 191 transitions, 1934 flow [2024-06-27 23:33:53,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 191 transitions, 1875 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-27 23:33:53,485 INFO L231 Difference]: Finished difference. Result has 239 places, 179 transitions, 1521 flow [2024-06-27 23:33:53,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1521, PETRI_PLACES=239, PETRI_TRANSITIONS=179} [2024-06-27 23:33:53,485 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 210 predicate places. [2024-06-27 23:33:53,486 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 179 transitions, 1521 flow [2024-06-27 23:33:53,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:53,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:53,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:53,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 23:33:53,486 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:33:53,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1718405212, now seen corresponding path program 11 times [2024-06-27 23:33:53,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:53,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855533549] [2024-06-27 23:33:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:53,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:54,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:54,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855533549] [2024-06-27 23:33:54,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855533549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:54,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:54,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:54,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395225345] [2024-06-27 23:33:54,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:54,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:54,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:54,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:54,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:54,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 179 transitions, 1521 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:54,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:54,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:54,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:55,199 INFO L124 PetriNetUnfolderBase]: 537/1038 cut-off events. [2024-06-27 23:33:55,199 INFO L125 PetriNetUnfolderBase]: For 163838/163838 co-relation queries the response was YES. [2024-06-27 23:33:55,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7834 conditions, 1038 events. 537/1038 cut-off events. For 163838/163838 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5611 event pairs, 198 based on Foata normal form. 2/1039 useless extension candidates. Maximal degree in co-relation 7718. Up to 965 conditions per place. [2024-06-27 23:33:55,208 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 167 selfloop transitions, 24 changer transitions 0/193 dead transitions. [2024-06-27 23:33:55,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 193 transitions, 2161 flow [2024-06-27 23:33:55,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:33:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:33:55,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 23:33:55,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-27 23:33:55,210 INFO L175 Difference]: Start difference. First operand has 239 places, 179 transitions, 1521 flow. Second operand 11 states and 116 transitions. [2024-06-27 23:33:55,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 193 transitions, 2161 flow [2024-06-27 23:33:55,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 193 transitions, 2087 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:33:55,602 INFO L231 Difference]: Finished difference. Result has 241 places, 181 transitions, 1565 flow [2024-06-27 23:33:55,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1565, PETRI_PLACES=241, PETRI_TRANSITIONS=181} [2024-06-27 23:33:55,602 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 212 predicate places. [2024-06-27 23:33:55,602 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 181 transitions, 1565 flow [2024-06-27 23:33:55,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:55,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:55,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:55,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 23:33:55,603 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 23:33:55,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:55,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1689394758, now seen corresponding path program 12 times [2024-06-27 23:33:55,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:55,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356083325] [2024-06-27 23:33:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:55,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:57,234 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 23:33:57,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:57,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356083325] [2024-06-27 23:33:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356083325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:57,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:57,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:33:57,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899492920] [2024-06-27 23:33:57,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:57,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:33:57,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:33:57,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:33:57,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:57,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 181 transitions, 1565 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:57,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:57,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:57,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:33:57,944 INFO L124 PetriNetUnfolderBase]: 541/1046 cut-off events. [2024-06-27 23:33:57,945 INFO L125 PetriNetUnfolderBase]: For 167929/167929 co-relation queries the response was YES. [2024-06-27 23:33:57,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7919 conditions, 1046 events. 541/1046 cut-off events. For 167929/167929 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5678 event pairs, 202 based on Foata normal form. 2/1047 useless extension candidates. Maximal degree in co-relation 7802. Up to 957 conditions per place. [2024-06-27 23:33:57,955 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 167 selfloop transitions, 29 changer transitions 0/198 dead transitions. [2024-06-27 23:33:57,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 198 transitions, 2037 flow [2024-06-27 23:33:57,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:33:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:33:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 135 transitions. [2024-06-27 23:33:57,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2024-06-27 23:33:57,956 INFO L175 Difference]: Start difference. First operand has 241 places, 181 transitions, 1565 flow. Second operand 13 states and 135 transitions. [2024-06-27 23:33:57,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 198 transitions, 2037 flow [2024-06-27 23:33:58,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 198 transitions, 1976 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 23:33:58,349 INFO L231 Difference]: Finished difference. Result has 247 places, 182 transitions, 1602 flow [2024-06-27 23:33:58,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1602, PETRI_PLACES=247, PETRI_TRANSITIONS=182} [2024-06-27 23:33:58,350 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 218 predicate places. [2024-06-27 23:33:58,350 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 182 transitions, 1602 flow [2024-06-27 23:33:58,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:58,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:33:58,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:33:58,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 23:33:58,351 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 23:33:58,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:33:58,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2003751036, now seen corresponding path program 29 times [2024-06-27 23:33:58,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:33:58,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720915836] [2024-06-27 23:33:58,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:33:58,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:33:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:33:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:33:59,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:33:59,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720915836] [2024-06-27 23:33:59,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720915836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:33:59,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:33:59,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:33:59,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301494989] [2024-06-27 23:33:59,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:33:59,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:33:59,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:33:59,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:33:59,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:33:59,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:33:59,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 182 transitions, 1602 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:33:59,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:33:59,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:33:59,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:00,436 INFO L124 PetriNetUnfolderBase]: 528/1023 cut-off events. [2024-06-27 23:34:00,436 INFO L125 PetriNetUnfolderBase]: For 164132/164132 co-relation queries the response was YES. [2024-06-27 23:34:00,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7032 conditions, 1023 events. 528/1023 cut-off events. For 164132/164132 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5556 event pairs, 193 based on Foata normal form. 10/1032 useless extension candidates. Maximal degree in co-relation 6913. Up to 934 conditions per place. [2024-06-27 23:34:00,445 INFO L140 encePairwiseOnDemand]: 17/30 looper letters, 163 selfloop transitions, 20 changer transitions 14/199 dead transitions. [2024-06-27 23:34:00,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 199 transitions, 2056 flow [2024-06-27 23:34:00,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:34:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:34:00,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 135 transitions. [2024-06-27 23:34:00,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2024-06-27 23:34:00,449 INFO L175 Difference]: Start difference. First operand has 247 places, 182 transitions, 1602 flow. Second operand 13 states and 135 transitions. [2024-06-27 23:34:00,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 199 transitions, 2056 flow [2024-06-27 23:34:00,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 199 transitions, 1968 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-27 23:34:00,737 INFO L231 Difference]: Finished difference. Result has 249 places, 176 transitions, 1483 flow [2024-06-27 23:34:00,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1483, PETRI_PLACES=249, PETRI_TRANSITIONS=176} [2024-06-27 23:34:00,737 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 220 predicate places. [2024-06-27 23:34:00,737 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 176 transitions, 1483 flow [2024-06-27 23:34:00,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:00,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:00,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:00,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 23:34:00,738 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:00,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1718413582, now seen corresponding path program 13 times [2024-06-27 23:34:00,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:00,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037089072] [2024-06-27 23:34:00,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:00,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:02,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:02,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:02,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037089072] [2024-06-27 23:34:02,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037089072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:02,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:02,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:02,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825540113] [2024-06-27 23:34:02,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:02,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:02,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:02,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:02,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:02,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:34:02,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 176 transitions, 1483 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:02,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:02,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:34:02,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:02,585 INFO L124 PetriNetUnfolderBase]: 496/963 cut-off events. [2024-06-27 23:34:02,585 INFO L125 PetriNetUnfolderBase]: For 129746/129746 co-relation queries the response was YES. [2024-06-27 23:34:02,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6511 conditions, 963 events. 496/963 cut-off events. For 129746/129746 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5150 event pairs, 188 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 6391. Up to 923 conditions per place. [2024-06-27 23:34:02,593 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 164 selfloop transitions, 20 changer transitions 0/186 dead transitions. [2024-06-27 23:34:02,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 186 transitions, 1873 flow [2024-06-27 23:34:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:02,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:02,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 23:34:02,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-27 23:34:02,594 INFO L175 Difference]: Start difference. First operand has 249 places, 176 transitions, 1483 flow. Second operand 10 states and 107 transitions. [2024-06-27 23:34:02,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 186 transitions, 1873 flow [2024-06-27 23:34:02,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 186 transitions, 1772 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-27 23:34:02,876 INFO L231 Difference]: Finished difference. Result has 241 places, 176 transitions, 1426 flow [2024-06-27 23:34:02,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1426, PETRI_PLACES=241, PETRI_TRANSITIONS=176} [2024-06-27 23:34:02,877 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 212 predicate places. [2024-06-27 23:34:02,877 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 176 transitions, 1426 flow [2024-06-27 23:34:02,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:02,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:02,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:02,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 23:34:02,878 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:02,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:02,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1039141504, now seen corresponding path program 14 times [2024-06-27 23:34:02,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:02,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755695039] [2024-06-27 23:34:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:02,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:04,170 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 23:34:04,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:04,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755695039] [2024-06-27 23:34:04,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755695039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:04,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:04,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:04,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395490038] [2024-06-27 23:34:04,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:04,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:04,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:04,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:04,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:04,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:34:04,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 176 transitions, 1426 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:04,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:04,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:34:04,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:04,616 INFO L124 PetriNetUnfolderBase]: 500/971 cut-off events. [2024-06-27 23:34:04,617 INFO L125 PetriNetUnfolderBase]: For 130410/130410 co-relation queries the response was YES. [2024-06-27 23:34:04,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6485 conditions, 971 events. 500/971 cut-off events. For 130410/130410 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5218 event pairs, 186 based on Foata normal form. 2/972 useless extension candidates. Maximal degree in co-relation 6367. Up to 927 conditions per place. [2024-06-27 23:34:04,625 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 171 selfloop transitions, 16 changer transitions 0/189 dead transitions. [2024-06-27 23:34:04,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 189 transitions, 1862 flow [2024-06-27 23:34:04,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:34:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:34:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 23:34:04,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-27 23:34:04,626 INFO L175 Difference]: Start difference. First operand has 241 places, 176 transitions, 1426 flow. Second operand 11 states and 111 transitions. [2024-06-27 23:34:04,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 189 transitions, 1862 flow [2024-06-27 23:34:04,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 189 transitions, 1815 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:04,907 INFO L231 Difference]: Finished difference. Result has 243 places, 177 transitions, 1453 flow [2024-06-27 23:34:04,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1453, PETRI_PLACES=243, PETRI_TRANSITIONS=177} [2024-06-27 23:34:04,908 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 214 predicate places. [2024-06-27 23:34:04,908 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 177 transitions, 1453 flow [2024-06-27 23:34:04,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:04,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:04,908 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 23:34:04,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 23:34:04,908 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:04,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:04,909 INFO L85 PathProgramCache]: Analyzing trace with hash -576216420, now seen corresponding path program 30 times [2024-06-27 23:34:04,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:04,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546969107] [2024-06-27 23:34:04,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:04,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:06,425 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 23:34:06,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:06,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546969107] [2024-06-27 23:34:06,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546969107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:06,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:06,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:34:06,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424758757] [2024-06-27 23:34:06,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:06,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:34:06,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:06,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:34:06,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:34:06,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:06,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 177 transitions, 1453 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:06,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:06,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:06,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:06,963 INFO L124 PetriNetUnfolderBase]: 527/1032 cut-off events. [2024-06-27 23:34:06,964 INFO L125 PetriNetUnfolderBase]: For 179388/179388 co-relation queries the response was YES. [2024-06-27 23:34:06,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7208 conditions, 1032 events. 527/1032 cut-off events. For 179388/179388 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5603 event pairs, 120 based on Foata normal form. 8/1039 useless extension candidates. Maximal degree in co-relation 7089. Up to 339 conditions per place. [2024-06-27 23:34:06,972 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 116 selfloop transitions, 70 changer transitions 15/203 dead transitions. [2024-06-27 23:34:06,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 203 transitions, 2121 flow [2024-06-27 23:34:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:06,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:34:06,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45666666666666667 [2024-06-27 23:34:06,973 INFO L175 Difference]: Start difference. First operand has 243 places, 177 transitions, 1453 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:34:06,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 203 transitions, 2121 flow [2024-06-27 23:34:07,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 203 transitions, 2057 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:07,304 INFO L231 Difference]: Finished difference. Result has 244 places, 174 transitions, 1517 flow [2024-06-27 23:34:07,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1517, PETRI_PLACES=244, PETRI_TRANSITIONS=174} [2024-06-27 23:34:07,304 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 215 predicate places. [2024-06-27 23:34:07,304 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 174 transitions, 1517 flow [2024-06-27 23:34:07,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:07,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:07,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:07,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 23:34:07,305 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:07,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:07,305 INFO L85 PathProgramCache]: Analyzing trace with hash -518123970, now seen corresponding path program 31 times [2024-06-27 23:34:07,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:07,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547200875] [2024-06-27 23:34:07,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:07,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:08,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:08,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:08,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547200875] [2024-06-27 23:34:08,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547200875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:08,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:08,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:34:08,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018774914] [2024-06-27 23:34:08,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:08,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:34:08,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:34:08,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:34:08,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:08,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 174 transitions, 1517 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:08,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:08,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:08,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:09,275 INFO L124 PetriNetUnfolderBase]: 544/1071 cut-off events. [2024-06-27 23:34:09,275 INFO L125 PetriNetUnfolderBase]: For 222173/222173 co-relation queries the response was YES. [2024-06-27 23:34:09,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8339 conditions, 1071 events. 544/1071 cut-off events. For 222173/222173 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5919 event pairs, 125 based on Foata normal form. 8/1078 useless extension candidates. Maximal degree in co-relation 8219. Up to 606 conditions per place. [2024-06-27 23:34:09,284 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 117 selfloop transitions, 70 changer transitions 13/202 dead transitions. [2024-06-27 23:34:09,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 202 transitions, 2209 flow [2024-06-27 23:34:09,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:09,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-27 23:34:09,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766666666666667 [2024-06-27 23:34:09,285 INFO L175 Difference]: Start difference. First operand has 244 places, 174 transitions, 1517 flow. Second operand 10 states and 143 transitions. [2024-06-27 23:34:09,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 202 transitions, 2209 flow [2024-06-27 23:34:09,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 202 transitions, 2088 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 23:34:09,727 INFO L231 Difference]: Finished difference. Result has 241 places, 171 transitions, 1528 flow [2024-06-27 23:34:09,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1528, PETRI_PLACES=241, PETRI_TRANSITIONS=171} [2024-06-27 23:34:09,728 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 212 predicate places. [2024-06-27 23:34:09,728 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 171 transitions, 1528 flow [2024-06-27 23:34:09,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:09,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:09,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:09,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 23:34:09,728 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:09,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:09,729 INFO L85 PathProgramCache]: Analyzing trace with hash -518004000, now seen corresponding path program 32 times [2024-06-27 23:34:09,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:09,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894526687] [2024-06-27 23:34:09,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:09,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:11,152 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 23:34:11,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:11,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894526687] [2024-06-27 23:34:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894526687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:11,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:11,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:34:11,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879440893] [2024-06-27 23:34:11,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:11,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:34:11,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:11,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:34:11,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:34:11,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:11,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 171 transitions, 1528 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:11,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:11,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:11,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:11,579 INFO L124 PetriNetUnfolderBase]: 531/1048 cut-off events. [2024-06-27 23:34:11,580 INFO L125 PetriNetUnfolderBase]: For 212679/212679 co-relation queries the response was YES. [2024-06-27 23:34:11,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8088 conditions, 1048 events. 531/1048 cut-off events. For 212679/212679 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5756 event pairs, 134 based on Foata normal form. 10/1057 useless extension candidates. Maximal degree in co-relation 7970. Up to 662 conditions per place. [2024-06-27 23:34:11,588 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 108 selfloop transitions, 69 changer transitions 14/193 dead transitions. [2024-06-27 23:34:11,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 193 transitions, 1996 flow [2024-06-27 23:34:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:11,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 23:34:11,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 23:34:11,589 INFO L175 Difference]: Start difference. First operand has 241 places, 171 transitions, 1528 flow. Second operand 10 states and 135 transitions. [2024-06-27 23:34:11,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 193 transitions, 1996 flow [2024-06-27 23:34:11,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 193 transitions, 1853 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:11,990 INFO L231 Difference]: Finished difference. Result has 238 places, 168 transitions, 1506 flow [2024-06-27 23:34:11,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1506, PETRI_PLACES=238, PETRI_TRANSITIONS=168} [2024-06-27 23:34:11,990 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 209 predicate places. [2024-06-27 23:34:11,990 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 168 transitions, 1506 flow [2024-06-27 23:34:11,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:11,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:11,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:11,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 23:34:11,991 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:11,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:11,991 INFO L85 PathProgramCache]: Analyzing trace with hash -518008650, now seen corresponding path program 33 times [2024-06-27 23:34:11,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:11,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560681784] [2024-06-27 23:34:11,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:11,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:13,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:13,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:13,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560681784] [2024-06-27 23:34:13,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560681784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:13,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:13,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:34:13,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993457177] [2024-06-27 23:34:13,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:13,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:34:13,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:13,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:34:13,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:34:13,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:13,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 168 transitions, 1506 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:13,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:13,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:13,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:14,152 INFO L124 PetriNetUnfolderBase]: 553/1102 cut-off events. [2024-06-27 23:34:14,153 INFO L125 PetriNetUnfolderBase]: For 252970/252970 co-relation queries the response was YES. [2024-06-27 23:34:14,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8802 conditions, 1102 events. 553/1102 cut-off events. For 252970/252970 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6182 event pairs, 129 based on Foata normal form. 16/1117 useless extension candidates. Maximal degree in co-relation 8686. Up to 545 conditions per place. [2024-06-27 23:34:14,162 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 100 selfloop transitions, 75 changer transitions 21/198 dead transitions. [2024-06-27 23:34:14,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 198 transitions, 2190 flow [2024-06-27 23:34:14,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:34:14,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:34:14,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-27 23:34:14,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-27 23:34:14,164 INFO L175 Difference]: Start difference. First operand has 238 places, 168 transitions, 1506 flow. Second operand 12 states and 166 transitions. [2024-06-27 23:34:14,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 198 transitions, 2190 flow [2024-06-27 23:34:14,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 198 transitions, 2044 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:14,610 INFO L231 Difference]: Finished difference. Result has 238 places, 157 transitions, 1444 flow [2024-06-27 23:34:14,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1444, PETRI_PLACES=238, PETRI_TRANSITIONS=157} [2024-06-27 23:34:14,610 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 209 predicate places. [2024-06-27 23:34:14,610 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 157 transitions, 1444 flow [2024-06-27 23:34:14,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:14,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:14,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:14,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 23:34:14,611 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:14,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:14,611 INFO L85 PathProgramCache]: Analyzing trace with hash 408168354, now seen corresponding path program 34 times [2024-06-27 23:34:14,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:14,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625662588] [2024-06-27 23:34:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:14,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:16,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:16,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625662588] [2024-06-27 23:34:16,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625662588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:16,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:16,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:16,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000983381] [2024-06-27 23:34:16,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:16,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:16,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:16,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:16,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:16,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:16,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 157 transitions, 1444 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:16,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:16,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:16,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:16,743 INFO L124 PetriNetUnfolderBase]: 516/1031 cut-off events. [2024-06-27 23:34:16,743 INFO L125 PetriNetUnfolderBase]: For 226238/226238 co-relation queries the response was YES. [2024-06-27 23:34:16,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8522 conditions, 1031 events. 516/1031 cut-off events. For 226238/226238 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5678 event pairs, 141 based on Foata normal form. 10/1040 useless extension candidates. Maximal degree in co-relation 8407. Up to 756 conditions per place. [2024-06-27 23:34:16,751 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 113 selfloop transitions, 48 changer transitions 12/175 dead transitions. [2024-06-27 23:34:16,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 175 transitions, 1862 flow [2024-06-27 23:34:16,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:34:16,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:34:16,752 INFO L175 Difference]: Start difference. First operand has 238 places, 157 transitions, 1444 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:34:16,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 175 transitions, 1862 flow [2024-06-27 23:34:17,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 175 transitions, 1683 flow, removed 6 selfloop flow, removed 19 redundant places. [2024-06-27 23:34:17,147 INFO L231 Difference]: Finished difference. Result has 222 places, 154 transitions, 1344 flow [2024-06-27 23:34:17,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1344, PETRI_PLACES=222, PETRI_TRANSITIONS=154} [2024-06-27 23:34:17,148 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2024-06-27 23:34:17,148 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 154 transitions, 1344 flow [2024-06-27 23:34:17,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:17,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:17,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:17,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 23:34:17,149 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:17,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash 407995374, now seen corresponding path program 35 times [2024-06-27 23:34:17,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:17,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054943853] [2024-06-27 23:34:17,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:17,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:18,549 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 23:34:18,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:18,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054943853] [2024-06-27 23:34:18,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054943853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:18,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:18,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:34:18,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668571242] [2024-06-27 23:34:18,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:18,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:34:18,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:18,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:34:18,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:34:18,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:18,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 154 transitions, 1344 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:18,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:18,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:18,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:19,092 INFO L124 PetriNetUnfolderBase]: 462/925 cut-off events. [2024-06-27 23:34:19,093 INFO L125 PetriNetUnfolderBase]: For 150771/150771 co-relation queries the response was YES. [2024-06-27 23:34:19,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6564 conditions, 925 events. 462/925 cut-off events. For 150771/150771 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4988 event pairs, 110 based on Foata normal form. 10/934 useless extension candidates. Maximal degree in co-relation 6457. Up to 640 conditions per place. [2024-06-27 23:34:19,101 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 108 selfloop transitions, 48 changer transitions 14/172 dead transitions. [2024-06-27 23:34:19,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 172 transitions, 1756 flow [2024-06-27 23:34:19,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:19,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:34:19,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:34:19,102 INFO L175 Difference]: Start difference. First operand has 222 places, 154 transitions, 1344 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:34:19,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 172 transitions, 1756 flow [2024-06-27 23:34:19,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 172 transitions, 1656 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:19,367 INFO L231 Difference]: Finished difference. Result has 220 places, 150 transitions, 1316 flow [2024-06-27 23:34:19,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1316, PETRI_PLACES=220, PETRI_TRANSITIONS=150} [2024-06-27 23:34:19,368 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-27 23:34:19,368 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 150 transitions, 1316 flow [2024-06-27 23:34:19,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:19,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:19,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:19,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 23:34:19,368 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:19,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:19,369 INFO L85 PathProgramCache]: Analyzing trace with hash 403526724, now seen corresponding path program 36 times [2024-06-27 23:34:19,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:19,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640639595] [2024-06-27 23:34:19,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:19,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:21,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:21,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640639595] [2024-06-27 23:34:21,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640639595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:21,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:21,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:34:21,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401554610] [2024-06-27 23:34:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:21,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:34:21,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:21,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:34:21,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:34:21,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:21,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 150 transitions, 1316 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:21,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:21,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:21,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:21,618 INFO L124 PetriNetUnfolderBase]: 453/910 cut-off events. [2024-06-27 23:34:21,618 INFO L125 PetriNetUnfolderBase]: For 146939/146939 co-relation queries the response was YES. [2024-06-27 23:34:21,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6457 conditions, 910 events. 453/910 cut-off events. For 146939/146939 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4889 event pairs, 110 based on Foata normal form. 10/919 useless extension candidates. Maximal degree in co-relation 6351. Up to 622 conditions per place. [2024-06-27 23:34:21,626 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 105 selfloop transitions, 47 changer transitions 14/168 dead transitions. [2024-06-27 23:34:21,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 168 transitions, 1720 flow [2024-06-27 23:34:21,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:21,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 23:34:21,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 23:34:21,627 INFO L175 Difference]: Start difference. First operand has 220 places, 150 transitions, 1316 flow. Second operand 10 states and 130 transitions. [2024-06-27 23:34:21,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 168 transitions, 1720 flow [2024-06-27 23:34:21,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 168 transitions, 1618 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:21,886 INFO L231 Difference]: Finished difference. Result has 216 places, 146 transitions, 1288 flow [2024-06-27 23:34:21,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1288, PETRI_PLACES=216, PETRI_TRANSITIONS=146} [2024-06-27 23:34:21,887 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2024-06-27 23:34:21,887 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 146 transitions, 1288 flow [2024-06-27 23:34:21,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:21,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:21,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:21,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 23:34:21,887 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:21,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash 403406754, now seen corresponding path program 37 times [2024-06-27 23:34:21,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:21,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042824580] [2024-06-27 23:34:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:21,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:23,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:23,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:23,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042824580] [2024-06-27 23:34:23,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042824580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:23,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:23,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:23,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506019643] [2024-06-27 23:34:23,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:23,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:23,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:23,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:23,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:23,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:23,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 146 transitions, 1288 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:23,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:23,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:23,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:23,925 INFO L124 PetriNetUnfolderBase]: 440/887 cut-off events. [2024-06-27 23:34:23,925 INFO L125 PetriNetUnfolderBase]: For 133775/133775 co-relation queries the response was YES. [2024-06-27 23:34:23,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6291 conditions, 887 events. 440/887 cut-off events. For 133775/133775 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4730 event pairs, 103 based on Foata normal form. 8/894 useless extension candidates. Maximal degree in co-relation 6187. Up to 613 conditions per place. [2024-06-27 23:34:23,932 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 105 selfloop transitions, 42 changer transitions 15/164 dead transitions. [2024-06-27 23:34:23,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 164 transitions, 1676 flow [2024-06-27 23:34:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:23,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-27 23:34:23,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42333333333333334 [2024-06-27 23:34:23,933 INFO L175 Difference]: Start difference. First operand has 216 places, 146 transitions, 1288 flow. Second operand 10 states and 127 transitions. [2024-06-27 23:34:23,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 164 transitions, 1676 flow [2024-06-27 23:34:24,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 164 transitions, 1576 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:24,175 INFO L231 Difference]: Finished difference. Result has 212 places, 142 transitions, 1249 flow [2024-06-27 23:34:24,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1249, PETRI_PLACES=212, PETRI_TRANSITIONS=142} [2024-06-27 23:34:24,175 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2024-06-27 23:34:24,176 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 142 transitions, 1249 flow [2024-06-27 23:34:24,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:24,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:24,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:24,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 23:34:24,176 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:24,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:24,177 INFO L85 PathProgramCache]: Analyzing trace with hash -978709488, now seen corresponding path program 38 times [2024-06-27 23:34:24,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:24,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199533974] [2024-06-27 23:34:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:24,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:25,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:25,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199533974] [2024-06-27 23:34:25,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199533974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:25,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:25,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:34:25,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759378436] [2024-06-27 23:34:25,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:25,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:34:25,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:25,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:34:25,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:34:25,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:25,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 142 transitions, 1249 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:25,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:25,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:25,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:26,155 INFO L124 PetriNetUnfolderBase]: 429/866 cut-off events. [2024-06-27 23:34:26,155 INFO L125 PetriNetUnfolderBase]: For 126825/126825 co-relation queries the response was YES. [2024-06-27 23:34:26,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6137 conditions, 866 events. 429/866 cut-off events. For 126825/126825 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4572 event pairs, 88 based on Foata normal form. 8/873 useless extension candidates. Maximal degree in co-relation 6035. Up to 339 conditions per place. [2024-06-27 23:34:26,162 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 83 selfloop transitions, 71 changer transitions 12/168 dead transitions. [2024-06-27 23:34:26,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 168 transitions, 1825 flow [2024-06-27 23:34:26,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:26,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:26,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 23:34:26,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45666666666666667 [2024-06-27 23:34:26,163 INFO L175 Difference]: Start difference. First operand has 212 places, 142 transitions, 1249 flow. Second operand 10 states and 137 transitions. [2024-06-27 23:34:26,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 168 transitions, 1825 flow [2024-06-27 23:34:26,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 168 transitions, 1725 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:26,354 INFO L231 Difference]: Finished difference. Result has 206 places, 139 transitions, 1285 flow [2024-06-27 23:34:26,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1285, PETRI_PLACES=206, PETRI_TRANSITIONS=139} [2024-06-27 23:34:26,354 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2024-06-27 23:34:26,354 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 139 transitions, 1285 flow [2024-06-27 23:34:26,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:26,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:26,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:26,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 23:34:26,355 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:26,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:26,355 INFO L85 PathProgramCache]: Analyzing trace with hash -118525696, now seen corresponding path program 39 times [2024-06-27 23:34:26,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:26,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529735607] [2024-06-27 23:34:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:26,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:27,979 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 23:34:27,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:27,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529735607] [2024-06-27 23:34:27,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529735607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:27,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:27,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:27,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259951454] [2024-06-27 23:34:27,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:27,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:28,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:28,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 139 transitions, 1285 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:28,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:28,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:28,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:28,544 INFO L124 PetriNetUnfolderBase]: 423/854 cut-off events. [2024-06-27 23:34:28,545 INFO L125 PetriNetUnfolderBase]: For 127781/127781 co-relation queries the response was YES. [2024-06-27 23:34:28,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6120 conditions, 854 events. 423/854 cut-off events. For 127781/127781 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4502 event pairs, 95 based on Foata normal form. 12/865 useless extension candidates. Maximal degree in co-relation 6021. Up to 507 conditions per place. [2024-06-27 23:34:28,551 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 81 selfloop transitions, 70 changer transitions 13/166 dead transitions. [2024-06-27 23:34:28,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 166 transitions, 1757 flow [2024-06-27 23:34:28,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:34:28,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:34:28,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-27 23:34:28,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-27 23:34:28,552 INFO L175 Difference]: Start difference. First operand has 206 places, 139 transitions, 1285 flow. Second operand 12 states and 158 transitions. [2024-06-27 23:34:28,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 166 transitions, 1757 flow [2024-06-27 23:34:28,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 166 transitions, 1626 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:28,760 INFO L231 Difference]: Finished difference. Result has 205 places, 134 transitions, 1302 flow [2024-06-27 23:34:28,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1302, PETRI_PLACES=205, PETRI_TRANSITIONS=134} [2024-06-27 23:34:28,760 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-27 23:34:28,760 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 134 transitions, 1302 flow [2024-06-27 23:34:28,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:28,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:28,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:28,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 23:34:28,761 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:28,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:28,761 INFO L85 PathProgramCache]: Analyzing trace with hash -118530346, now seen corresponding path program 40 times [2024-06-27 23:34:28,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:28,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691597265] [2024-06-27 23:34:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:28,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:30,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:30,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:30,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691597265] [2024-06-27 23:34:30,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691597265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:30,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:30,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:34:30,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119719703] [2024-06-27 23:34:30,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:30,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:34:30,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:30,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:34:30,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:34:30,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:30,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 134 transitions, 1302 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:30,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:30,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:30,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:30,704 INFO L124 PetriNetUnfolderBase]: 403/822 cut-off events. [2024-06-27 23:34:30,704 INFO L125 PetriNetUnfolderBase]: For 110801/110801 co-relation queries the response was YES. [2024-06-27 23:34:30,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5964 conditions, 822 events. 403/822 cut-off events. For 110801/110801 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4319 event pairs, 87 based on Foata normal form. 8/829 useless extension candidates. Maximal degree in co-relation 5867. Up to 509 conditions per place. [2024-06-27 23:34:30,710 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 80 selfloop transitions, 60 changer transitions 13/155 dead transitions. [2024-06-27 23:34:30,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 155 transitions, 1688 flow [2024-06-27 23:34:30,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:34:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:34:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-27 23:34:30,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-27 23:34:30,711 INFO L175 Difference]: Start difference. First operand has 205 places, 134 transitions, 1302 flow. Second operand 9 states and 124 transitions. [2024-06-27 23:34:30,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 155 transitions, 1688 flow [2024-06-27 23:34:30,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 155 transitions, 1510 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-27 23:34:30,894 INFO L231 Difference]: Finished difference. Result has 200 places, 130 transitions, 1219 flow [2024-06-27 23:34:30,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1219, PETRI_PLACES=200, PETRI_TRANSITIONS=130} [2024-06-27 23:34:30,895 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 171 predicate places. [2024-06-27 23:34:30,895 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 130 transitions, 1219 flow [2024-06-27 23:34:30,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:30,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:30,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:30,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 23:34:30,896 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:30,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:30,896 INFO L85 PathProgramCache]: Analyzing trace with hash -113884066, now seen corresponding path program 41 times [2024-06-27 23:34:30,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:30,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459987087] [2024-06-27 23:34:30,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:30,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:32,780 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 23:34:32,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:32,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459987087] [2024-06-27 23:34:32,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459987087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:32,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:32,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:32,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752572811] [2024-06-27 23:34:32,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:32,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:32,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:32,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:32,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:32,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:32,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 130 transitions, 1219 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:32,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:32,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:32,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:33,385 INFO L124 PetriNetUnfolderBase]: 397/809 cut-off events. [2024-06-27 23:34:33,386 INFO L125 PetriNetUnfolderBase]: For 108477/108477 co-relation queries the response was YES. [2024-06-27 23:34:33,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5735 conditions, 809 events. 397/809 cut-off events. For 108477/108477 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4254 event pairs, 91 based on Foata normal form. 10/818 useless extension candidates. Maximal degree in co-relation 5640. Up to 534 conditions per place. [2024-06-27 23:34:33,390 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 86 selfloop transitions, 52 changer transitions 11/151 dead transitions. [2024-06-27 23:34:33,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 151 transitions, 1603 flow [2024-06-27 23:34:33,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 23:34:33,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43666666666666665 [2024-06-27 23:34:33,391 INFO L175 Difference]: Start difference. First operand has 200 places, 130 transitions, 1219 flow. Second operand 10 states and 131 transitions. [2024-06-27 23:34:33,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 151 transitions, 1603 flow [2024-06-27 23:34:33,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 151 transitions, 1477 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:34:33,545 INFO L231 Difference]: Finished difference. Result has 196 places, 127 transitions, 1178 flow [2024-06-27 23:34:33,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1178, PETRI_PLACES=196, PETRI_TRANSITIONS=127} [2024-06-27 23:34:33,545 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 167 predicate places. [2024-06-27 23:34:33,546 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 127 transitions, 1178 flow [2024-06-27 23:34:33,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:33,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:33,546 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 23:34:33,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 23:34:33,546 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:33,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash 58843408, now seen corresponding path program 15 times [2024-06-27 23:34:33,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:33,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826902661] [2024-06-27 23:34:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:33,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:35,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826902661] [2024-06-27 23:34:35,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826902661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:35,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:35,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472948750] [2024-06-27 23:34:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:35,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:35,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:35,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:35,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:35,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:34:35,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 127 transitions, 1178 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:35,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:35,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:34:35,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:36,673 INFO L124 PetriNetUnfolderBase]: 375/768 cut-off events. [2024-06-27 23:34:36,673 INFO L125 PetriNetUnfolderBase]: For 86173/86173 co-relation queries the response was YES. [2024-06-27 23:34:36,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5539 conditions, 768 events. 375/768 cut-off events. For 86173/86173 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3969 event pairs, 94 based on Foata normal form. 2/769 useless extension candidates. Maximal degree in co-relation 5445. Up to 536 conditions per place. [2024-06-27 23:34:36,679 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 105 selfloop transitions, 40 changer transitions 0/147 dead transitions. [2024-06-27 23:34:36,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 147 transitions, 1568 flow [2024-06-27 23:34:36,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:34:36,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:34:36,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-27 23:34:36,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37435897435897436 [2024-06-27 23:34:36,680 INFO L175 Difference]: Start difference. First operand has 196 places, 127 transitions, 1178 flow. Second operand 13 states and 146 transitions. [2024-06-27 23:34:36,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 147 transitions, 1568 flow [2024-06-27 23:34:36,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 147 transitions, 1460 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:36,831 INFO L231 Difference]: Finished difference. Result has 197 places, 128 transitions, 1194 flow [2024-06-27 23:34:36,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1194, PETRI_PLACES=197, PETRI_TRANSITIONS=128} [2024-06-27 23:34:36,831 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2024-06-27 23:34:36,831 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 128 transitions, 1194 flow [2024-06-27 23:34:36,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:36,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:36,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:36,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 23:34:36,832 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:36,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:36,832 INFO L85 PathProgramCache]: Analyzing trace with hash -91317580, now seen corresponding path program 16 times [2024-06-27 23:34:36,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:36,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647331379] [2024-06-27 23:34:36,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:36,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:38,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:38,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647331379] [2024-06-27 23:34:38,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647331379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:38,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:38,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:38,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746955640] [2024-06-27 23:34:38,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:38,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:38,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:38,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:38,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:39,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:34:39,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 128 transitions, 1194 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:39,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:39,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:34:39,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:39,476 INFO L124 PetriNetUnfolderBase]: 379/776 cut-off events. [2024-06-27 23:34:39,476 INFO L125 PetriNetUnfolderBase]: For 84362/84362 co-relation queries the response was YES. [2024-06-27 23:34:39,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5576 conditions, 776 events. 379/776 cut-off events. For 84362/84362 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4030 event pairs, 92 based on Foata normal form. 2/777 useless extension candidates. Maximal degree in co-relation 5483. Up to 515 conditions per place. [2024-06-27 23:34:39,483 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 103 selfloop transitions, 44 changer transitions 0/149 dead transitions. [2024-06-27 23:34:39,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 149 transitions, 1716 flow [2024-06-27 23:34:39,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:34:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:34:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-27 23:34:39,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3769230769230769 [2024-06-27 23:34:39,485 INFO L175 Difference]: Start difference. First operand has 197 places, 128 transitions, 1194 flow. Second operand 13 states and 147 transitions. [2024-06-27 23:34:39,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 149 transitions, 1716 flow [2024-06-27 23:34:39,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 149 transitions, 1602 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-27 23:34:39,649 INFO L231 Difference]: Finished difference. Result has 199 places, 129 transitions, 1212 flow [2024-06-27 23:34:39,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1212, PETRI_PLACES=199, PETRI_TRANSITIONS=129} [2024-06-27 23:34:39,649 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-06-27 23:34:39,649 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 129 transitions, 1212 flow [2024-06-27 23:34:39,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:39,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:39,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:39,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 23:34:39,650 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:39,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:39,650 INFO L85 PathProgramCache]: Analyzing trace with hash 969214556, now seen corresponding path program 42 times [2024-06-27 23:34:39,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:39,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975536475] [2024-06-27 23:34:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:39,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:41,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:41,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975536475] [2024-06-27 23:34:41,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975536475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:41,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:41,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:41,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59016615] [2024-06-27 23:34:41,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:41,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:41,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:41,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:41,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:41,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:41,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 129 transitions, 1212 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:41,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:41,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:41,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:41,927 INFO L124 PetriNetUnfolderBase]: 395/811 cut-off events. [2024-06-27 23:34:41,928 INFO L125 PetriNetUnfolderBase]: For 103155/103155 co-relation queries the response was YES. [2024-06-27 23:34:41,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5678 conditions, 811 events. 395/811 cut-off events. For 103155/103155 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4266 event pairs, 102 based on Foata normal form. 10/820 useless extension candidates. Maximal degree in co-relation 5584. Up to 536 conditions per place. [2024-06-27 23:34:41,934 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 93 selfloop transitions, 45 changer transitions 11/151 dead transitions. [2024-06-27 23:34:41,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 151 transitions, 1596 flow [2024-06-27 23:34:41,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:34:41,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:34:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-27 23:34:41,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2024-06-27 23:34:41,935 INFO L175 Difference]: Start difference. First operand has 199 places, 129 transitions, 1212 flow. Second operand 13 states and 157 transitions. [2024-06-27 23:34:41,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 151 transitions, 1596 flow [2024-06-27 23:34:42,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 151 transitions, 1463 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-27 23:34:42,099 INFO L231 Difference]: Finished difference. Result has 201 places, 126 transitions, 1150 flow [2024-06-27 23:34:42,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1150, PETRI_PLACES=201, PETRI_TRANSITIONS=126} [2024-06-27 23:34:42,099 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-27 23:34:42,099 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 126 transitions, 1150 flow [2024-06-27 23:34:42,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:42,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:42,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:42,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 23:34:42,100 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 23:34:42,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2034903608, now seen corresponding path program 43 times [2024-06-27 23:34:42,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:42,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266201731] [2024-06-27 23:34:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:42,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:43,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:43,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:43,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266201731] [2024-06-27 23:34:43,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266201731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:43,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:43,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:34:43,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472221932] [2024-06-27 23:34:43,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:43,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:34:43,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:43,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:34:43,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:34:43,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:43,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 126 transitions, 1150 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:43,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:43,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:43,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:44,049 INFO L124 PetriNetUnfolderBase]: 381/789 cut-off events. [2024-06-27 23:34:44,049 INFO L125 PetriNetUnfolderBase]: For 101104/101104 co-relation queries the response was YES. [2024-06-27 23:34:44,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 789 events. 381/789 cut-off events. For 101104/101104 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4167 event pairs, 96 based on Foata normal form. 8/796 useless extension candidates. Maximal degree in co-relation 5417. Up to 514 conditions per place. [2024-06-27 23:34:44,054 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 82 selfloop transitions, 51 changer transitions 11/146 dead transitions. [2024-06-27 23:34:44,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 146 transitions, 1514 flow [2024-06-27 23:34:44,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:34:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:34:44,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-27 23:34:44,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 23:34:44,055 INFO L175 Difference]: Start difference. First operand has 201 places, 126 transitions, 1150 flow. Second operand 9 states and 123 transitions. [2024-06-27 23:34:44,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 146 transitions, 1514 flow [2024-06-27 23:34:44,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 146 transitions, 1412 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 23:34:44,211 INFO L231 Difference]: Finished difference. Result has 195 places, 123 transitions, 1137 flow [2024-06-27 23:34:44,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1137, PETRI_PLACES=195, PETRI_TRANSITIONS=123} [2024-06-27 23:34:44,211 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2024-06-27 23:34:44,211 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 123 transitions, 1137 flow [2024-06-27 23:34:44,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:44,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:44,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:44,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 23:34:44,212 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 23:34:44,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:44,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1008601356, now seen corresponding path program 44 times [2024-06-27 23:34:44,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:44,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059567551] [2024-06-27 23:34:44,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:44,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:45,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:45,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059567551] [2024-06-27 23:34:45,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059567551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:45,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:45,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:45,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280457068] [2024-06-27 23:34:45,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:45,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:45,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:45,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:45,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:45,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:45,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 123 transitions, 1137 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:45,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:45,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:45,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:46,226 INFO L124 PetriNetUnfolderBase]: 378/784 cut-off events. [2024-06-27 23:34:46,227 INFO L125 PetriNetUnfolderBase]: For 102269/102269 co-relation queries the response was YES. [2024-06-27 23:34:46,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5429 conditions, 784 events. 378/784 cut-off events. For 102269/102269 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4129 event pairs, 103 based on Foata normal form. 10/793 useless extension candidates. Maximal degree in co-relation 5337. Up to 491 conditions per place. [2024-06-27 23:34:46,233 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 85 selfloop transitions, 45 changer transitions 11/143 dead transitions. [2024-06-27 23:34:46,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 143 transitions, 1497 flow [2024-06-27 23:34:46,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:34:46,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2024-06-27 23:34:46,234 INFO L175 Difference]: Start difference. First operand has 195 places, 123 transitions, 1137 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:34:46,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 143 transitions, 1497 flow [2024-06-27 23:34:46,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 143 transitions, 1389 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 23:34:46,386 INFO L231 Difference]: Finished difference. Result has 192 places, 120 transitions, 1102 flow [2024-06-27 23:34:46,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1102, PETRI_PLACES=192, PETRI_TRANSITIONS=120} [2024-06-27 23:34:46,386 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-06-27 23:34:46,386 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 120 transitions, 1102 flow [2024-06-27 23:34:46,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:46,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:46,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:46,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 23:34:46,387 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 23:34:46,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:46,387 INFO L85 PathProgramCache]: Analyzing trace with hash 962780816, now seen corresponding path program 45 times [2024-06-27 23:34:46,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:46,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358482522] [2024-06-27 23:34:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:46,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:47,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:47,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:47,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358482522] [2024-06-27 23:34:47,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358482522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:47,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:47,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:47,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383298083] [2024-06-27 23:34:47,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:47,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:47,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:47,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:47,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:48,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:48,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 120 transitions, 1102 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:48,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:48,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:48,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:48,573 INFO L124 PetriNetUnfolderBase]: 366/764 cut-off events. [2024-06-27 23:34:48,574 INFO L125 PetriNetUnfolderBase]: For 92055/92055 co-relation queries the response was YES. [2024-06-27 23:34:48,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5259 conditions, 764 events. 366/764 cut-off events. For 92055/92055 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3999 event pairs, 93 based on Foata normal form. 8/771 useless extension candidates. Maximal degree in co-relation 5169. Up to 416 conditions per place. [2024-06-27 23:34:48,579 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 90 selfloop transitions, 43 changer transitions 8/143 dead transitions. [2024-06-27 23:34:48,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 143 transitions, 1598 flow [2024-06-27 23:34:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:34:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:34:48,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 23:34:48,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2024-06-27 23:34:48,580 INFO L175 Difference]: Start difference. First operand has 192 places, 120 transitions, 1102 flow. Second operand 10 states and 134 transitions. [2024-06-27 23:34:48,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 143 transitions, 1598 flow [2024-06-27 23:34:48,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 143 transitions, 1500 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 23:34:48,722 INFO L231 Difference]: Finished difference. Result has 190 places, 117 transitions, 1075 flow [2024-06-27 23:34:48,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1075, PETRI_PLACES=190, PETRI_TRANSITIONS=117} [2024-06-27 23:34:48,722 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-27 23:34:48,722 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 117 transitions, 1075 flow [2024-06-27 23:34:48,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:48,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:48,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:48,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 23:34:48,723 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 23:34:48,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:48,723 INFO L85 PathProgramCache]: Analyzing trace with hash 962965390, now seen corresponding path program 17 times [2024-06-27 23:34:48,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:48,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603875360] [2024-06-27 23:34:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:48,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:50,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:50,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603875360] [2024-06-27 23:34:50,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603875360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:50,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:50,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:50,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586458594] [2024-06-27 23:34:50,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:50,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:50,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:50,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:50,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:50,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:34:50,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 117 transitions, 1075 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:50,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:50,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:34:50,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:51,007 INFO L124 PetriNetUnfolderBase]: 344/719 cut-off events. [2024-06-27 23:34:51,007 INFO L125 PetriNetUnfolderBase]: For 74044/74044 co-relation queries the response was YES. [2024-06-27 23:34:51,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 719 events. 344/719 cut-off events. For 74044/74044 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3710 event pairs, 93 based on Foata normal form. 2/720 useless extension candidates. Maximal degree in co-relation 4834. Up to 487 conditions per place. [2024-06-27 23:34:51,012 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 96 selfloop transitions, 36 changer transitions 0/134 dead transitions. [2024-06-27 23:34:51,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 134 transitions, 1397 flow [2024-06-27 23:34:51,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:34:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:34:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 23:34:51,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-27 23:34:51,013 INFO L175 Difference]: Start difference. First operand has 190 places, 117 transitions, 1075 flow. Second operand 11 states and 127 transitions. [2024-06-27 23:34:51,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 134 transitions, 1397 flow [2024-06-27 23:34:51,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 134 transitions, 1279 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 23:34:51,147 INFO L231 Difference]: Finished difference. Result has 188 places, 117 transitions, 1033 flow [2024-06-27 23:34:51,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1033, PETRI_PLACES=188, PETRI_TRANSITIONS=117} [2024-06-27 23:34:51,147 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 159 predicate places. [2024-06-27 23:34:51,147 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 117 transitions, 1033 flow [2024-06-27 23:34:51,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:51,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:51,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:51,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 23:34:51,148 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 23:34:51,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:51,148 INFO L85 PathProgramCache]: Analyzing trace with hash 962958446, now seen corresponding path program 46 times [2024-06-27 23:34:51,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:51,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539025305] [2024-06-27 23:34:51,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:51,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:53,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:53,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539025305] [2024-06-27 23:34:53,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539025305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:53,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:53,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:34:53,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597099286] [2024-06-27 23:34:53,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:53,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:34:53,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:53,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:34:53,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:34:53,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:34:53,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 117 transitions, 1033 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:53,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:53,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:34:53,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:53,697 INFO L124 PetriNetUnfolderBase]: 331/695 cut-off events. [2024-06-27 23:34:53,697 INFO L125 PetriNetUnfolderBase]: For 65217/65217 co-relation queries the response was YES. [2024-06-27 23:34:53,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4121 conditions, 695 events. 331/695 cut-off events. For 65217/65217 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3585 event pairs, 82 based on Foata normal form. 10/704 useless extension candidates. Maximal degree in co-relation 4033. Up to 420 conditions per place. [2024-06-27 23:34:53,701 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 83 selfloop transitions, 40 changer transitions 11/136 dead transitions. [2024-06-27 23:34:53,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 136 transitions, 1373 flow [2024-06-27 23:34:53,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:34:53,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:34:53,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-27 23:34:53,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-27 23:34:53,703 INFO L175 Difference]: Start difference. First operand has 188 places, 117 transitions, 1033 flow. Second operand 11 states and 136 transitions. [2024-06-27 23:34:53,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 136 transitions, 1373 flow [2024-06-27 23:34:53,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 136 transitions, 1292 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:34:53,819 INFO L231 Difference]: Finished difference. Result has 189 places, 114 transitions, 1011 flow [2024-06-27 23:34:53,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1011, PETRI_PLACES=189, PETRI_TRANSITIONS=114} [2024-06-27 23:34:53,819 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-27 23:34:53,819 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 114 transitions, 1011 flow [2024-06-27 23:34:53,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:53,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:53,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:53,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 23:34:53,820 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 23:34:53,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:53,820 INFO L85 PathProgramCache]: Analyzing trace with hash 535119069, now seen corresponding path program 1 times [2024-06-27 23:34:53,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:53,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813075022] [2024-06-27 23:34:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:53,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:55,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:55,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813075022] [2024-06-27 23:34:55,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813075022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:55,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:55,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:55,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388780095] [2024-06-27 23:34:55,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:55,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:55,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:55,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:55,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:34:55,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 114 transitions, 1011 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:55,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:55,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:34:55,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:56,136 INFO L124 PetriNetUnfolderBase]: 313/666 cut-off events. [2024-06-27 23:34:56,136 INFO L125 PetriNetUnfolderBase]: For 60060/60060 co-relation queries the response was YES. [2024-06-27 23:34:56,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 666 events. 313/666 cut-off events. For 60060/60060 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3432 event pairs, 103 based on Foata normal form. 6/671 useless extension candidates. Maximal degree in co-relation 3924. Up to 476 conditions per place. [2024-06-27 23:34:56,141 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 92 selfloop transitions, 29 changer transitions 7/130 dead transitions. [2024-06-27 23:34:56,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 130 transitions, 1315 flow [2024-06-27 23:34:56,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:34:56,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:34:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 23:34:56,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 23:34:56,161 INFO L175 Difference]: Start difference. First operand has 189 places, 114 transitions, 1011 flow. Second operand 11 states and 123 transitions. [2024-06-27 23:34:56,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 130 transitions, 1315 flow [2024-06-27 23:34:56,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 130 transitions, 1231 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:34:56,282 INFO L231 Difference]: Finished difference. Result has 186 places, 111 transitions, 963 flow [2024-06-27 23:34:56,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=963, PETRI_PLACES=186, PETRI_TRANSITIONS=111} [2024-06-27 23:34:56,282 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2024-06-27 23:34:56,282 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 111 transitions, 963 flow [2024-06-27 23:34:56,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:56,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:56,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:56,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 23:34:56,283 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 23:34:56,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash -799472261, now seen corresponding path program 2 times [2024-06-27 23:34:56,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:56,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937297736] [2024-06-27 23:34:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:56,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:34:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:34:58,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:34:58,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937297736] [2024-06-27 23:34:58,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937297736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:34:58,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:34:58,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:34:58,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872466741] [2024-06-27 23:34:58,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:34:58,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:34:58,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:34:58,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:34:58,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:34:58,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:34:58,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 111 transitions, 963 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:58,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:34:58,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:34:58,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:34:58,674 INFO L124 PetriNetUnfolderBase]: 286/606 cut-off events. [2024-06-27 23:34:58,675 INFO L125 PetriNetUnfolderBase]: For 47283/47283 co-relation queries the response was YES. [2024-06-27 23:34:58,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3415 conditions, 606 events. 286/606 cut-off events. For 47283/47283 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3046 event pairs, 88 based on Foata normal form. 6/611 useless extension candidates. Maximal degree in co-relation 3327. Up to 439 conditions per place. [2024-06-27 23:34:58,678 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 82 selfloop transitions, 29 changer transitions 15/128 dead transitions. [2024-06-27 23:34:58,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 128 transitions, 1269 flow [2024-06-27 23:34:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:34:58,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:34:58,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 23:34:58,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3696969696969697 [2024-06-27 23:34:58,680 INFO L175 Difference]: Start difference. First operand has 186 places, 111 transitions, 963 flow. Second operand 11 states and 122 transitions. [2024-06-27 23:34:58,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 128 transitions, 1269 flow [2024-06-27 23:34:58,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 128 transitions, 1198 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 23:34:58,748 INFO L231 Difference]: Finished difference. Result has 185 places, 105 transitions, 901 flow [2024-06-27 23:34:58,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=901, PETRI_PLACES=185, PETRI_TRANSITIONS=105} [2024-06-27 23:34:58,749 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-27 23:34:58,749 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 105 transitions, 901 flow [2024-06-27 23:34:58,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:34:58,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:34:58,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:34:58,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 23:34:58,750 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 23:34:58,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:34:58,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1139050855, now seen corresponding path program 3 times [2024-06-27 23:34:58,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:34:58,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612515722] [2024-06-27 23:34:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:34:58,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:34:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:00,758 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 23:35:00,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:00,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612515722] [2024-06-27 23:35:00,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612515722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:00,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:00,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:00,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941738287] [2024-06-27 23:35:00,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:00,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:00,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:00,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:00,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:00,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:00,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 105 transitions, 901 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:00,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:00,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:00,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:01,490 INFO L124 PetriNetUnfolderBase]: 274/582 cut-off events. [2024-06-27 23:35:01,490 INFO L125 PetriNetUnfolderBase]: For 47261/47261 co-relation queries the response was YES. [2024-06-27 23:35:01,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3308 conditions, 582 events. 274/582 cut-off events. For 47261/47261 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2881 event pairs, 92 based on Foata normal form. 6/587 useless extension candidates. Maximal degree in co-relation 3220. Up to 429 conditions per place. [2024-06-27 23:35:01,494 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 88 selfloop transitions, 25 changer transitions 11/126 dead transitions. [2024-06-27 23:35:01,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 126 transitions, 1215 flow [2024-06-27 23:35:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 23:35:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 23:35:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 147 transitions. [2024-06-27 23:35:01,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:35:01,495 INFO L175 Difference]: Start difference. First operand has 185 places, 105 transitions, 901 flow. Second operand 14 states and 147 transitions. [2024-06-27 23:35:01,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 126 transitions, 1215 flow [2024-06-27 23:35:01,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 126 transitions, 1143 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:35:01,588 INFO L231 Difference]: Finished difference. Result has 180 places, 102 transitions, 862 flow [2024-06-27 23:35:01,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=862, PETRI_PLACES=180, PETRI_TRANSITIONS=102} [2024-06-27 23:35:01,588 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2024-06-27 23:35:01,588 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 102 transitions, 862 flow [2024-06-27 23:35:01,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:01,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:01,588 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 23:35:01,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 23:35:01,589 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 23:35:01,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:01,589 INFO L85 PathProgramCache]: Analyzing trace with hash 260156343, now seen corresponding path program 4 times [2024-06-27 23:35:01,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:01,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358857063] [2024-06-27 23:35:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:01,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:03,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:03,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358857063] [2024-06-27 23:35:03,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358857063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:03,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:03,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:35:03,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055064648] [2024-06-27 23:35:03,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:03,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:35:03,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:03,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:35:03,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:35:03,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:03,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 102 transitions, 862 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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 23:35:03,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:03,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:03,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:04,315 INFO L124 PetriNetUnfolderBase]: 264/564 cut-off events. [2024-06-27 23:35:04,316 INFO L125 PetriNetUnfolderBase]: For 44203/44203 co-relation queries the response was YES. [2024-06-27 23:35:04,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 564 events. 264/564 cut-off events. For 44203/44203 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2771 event pairs, 88 based on Foata normal form. 6/569 useless extension candidates. Maximal degree in co-relation 3094. Up to 405 conditions per place. [2024-06-27 23:35:04,319 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 85 selfloop transitions, 24 changer transitions 12/123 dead transitions. [2024-06-27 23:35:04,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 123 transitions, 1166 flow [2024-06-27 23:35:04,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 23:35:04,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 23:35:04,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 147 transitions. [2024-06-27 23:35:04,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 23:35:04,321 INFO L175 Difference]: Start difference. First operand has 180 places, 102 transitions, 862 flow. Second operand 14 states and 147 transitions. [2024-06-27 23:35:04,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 123 transitions, 1166 flow [2024-06-27 23:35:04,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 123 transitions, 1110 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-27 23:35:04,387 INFO L231 Difference]: Finished difference. Result has 176 places, 98 transitions, 831 flow [2024-06-27 23:35:04,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=831, PETRI_PLACES=176, PETRI_TRANSITIONS=98} [2024-06-27 23:35:04,387 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2024-06-27 23:35:04,387 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 98 transitions, 831 flow [2024-06-27 23:35:04,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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 23:35:04,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:04,388 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 23:35:04,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 23:35:04,388 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 23:35:04,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:04,388 INFO L85 PathProgramCache]: Analyzing trace with hash 58807623, now seen corresponding path program 5 times [2024-06-27 23:35:04,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:04,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784916397] [2024-06-27 23:35:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:04,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:06,468 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 23:35:06,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:06,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784916397] [2024-06-27 23:35:06,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784916397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:06,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:06,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:06,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752403354] [2024-06-27 23:35:06,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:06,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:06,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:06,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:06,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:06,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:06,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 98 transitions, 831 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:06,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:06,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:06,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:06,950 INFO L124 PetriNetUnfolderBase]: 237/507 cut-off events. [2024-06-27 23:35:06,951 INFO L125 PetriNetUnfolderBase]: For 31813/31813 co-relation queries the response was YES. [2024-06-27 23:35:06,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2643 conditions, 507 events. 237/507 cut-off events. For 31813/31813 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2396 event pairs, 77 based on Foata normal form. 6/512 useless extension candidates. Maximal degree in co-relation 2560. Up to 368 conditions per place. [2024-06-27 23:35:06,954 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 77 selfloop transitions, 17 changer transitions 19/115 dead transitions. [2024-06-27 23:35:06,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 115 transitions, 1107 flow [2024-06-27 23:35:06,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:35:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:35:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-27 23:35:06,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3527777777777778 [2024-06-27 23:35:06,955 INFO L175 Difference]: Start difference. First operand has 176 places, 98 transitions, 831 flow. Second operand 12 states and 127 transitions. [2024-06-27 23:35:06,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 115 transitions, 1107 flow [2024-06-27 23:35:06,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 115 transitions, 1051 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-27 23:35:07,001 INFO L231 Difference]: Finished difference. Result has 168 places, 91 transitions, 757 flow [2024-06-27 23:35:07,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=757, PETRI_PLACES=168, PETRI_TRANSITIONS=91} [2024-06-27 23:35:07,001 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 139 predicate places. [2024-06-27 23:35:07,001 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 91 transitions, 757 flow [2024-06-27 23:35:07,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:07,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:07,001 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 23:35:07,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 23:35:07,002 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 23:35:07,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:07,002 INFO L85 PathProgramCache]: Analyzing trace with hash -208005043, now seen corresponding path program 6 times [2024-06-27 23:35:07,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:07,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628751647] [2024-06-27 23:35:07,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:07,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:08,774 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 23:35:08,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:08,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628751647] [2024-06-27 23:35:08,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628751647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:08,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:08,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:08,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181543364] [2024-06-27 23:35:08,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:08,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:08,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:08,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:08,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:08,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 91 transitions, 757 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:08,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:08,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:08,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:09,305 INFO L124 PetriNetUnfolderBase]: 224/477 cut-off events. [2024-06-27 23:35:09,305 INFO L125 PetriNetUnfolderBase]: For 28483/28483 co-relation queries the response was YES. [2024-06-27 23:35:09,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 477 events. 224/477 cut-off events. For 28483/28483 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2217 event pairs, 72 based on Foata normal form. 6/482 useless extension candidates. Maximal degree in co-relation 2381. Up to 387 conditions per place. [2024-06-27 23:35:09,308 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 76 selfloop transitions, 18 changer transitions 12/108 dead transitions. [2024-06-27 23:35:09,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 108 transitions, 1021 flow [2024-06-27 23:35:09,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:35:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:35:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 23:35:09,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-27 23:35:09,309 INFO L175 Difference]: Start difference. First operand has 168 places, 91 transitions, 757 flow. Second operand 12 states and 125 transitions. [2024-06-27 23:35:09,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 108 transitions, 1021 flow [2024-06-27 23:35:09,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 108 transitions, 965 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-27 23:35:09,344 INFO L231 Difference]: Finished difference. Result has 155 places, 87 transitions, 709 flow [2024-06-27 23:35:09,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=709, PETRI_PLACES=155, PETRI_TRANSITIONS=87} [2024-06-27 23:35:09,344 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 126 predicate places. [2024-06-27 23:35:09,344 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 87 transitions, 709 flow [2024-06-27 23:35:09,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:09,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:09,345 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 23:35:09,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 23:35:09,345 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 23:35:09,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash 860290695, now seen corresponding path program 7 times [2024-06-27 23:35:09,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:09,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671056161] [2024-06-27 23:35:09,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:09,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:11,090 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 23:35:11,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:11,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671056161] [2024-06-27 23:35:11,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671056161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:11,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:11,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:11,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837029309] [2024-06-27 23:35:11,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:11,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:11,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:11,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:11,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:11,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 87 transitions, 709 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:11,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:11,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:11,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:11,715 INFO L124 PetriNetUnfolderBase]: 215/458 cut-off events. [2024-06-27 23:35:11,715 INFO L125 PetriNetUnfolderBase]: For 23411/23411 co-relation queries the response was YES. [2024-06-27 23:35:11,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2305 conditions, 458 events. 215/458 cut-off events. For 23411/23411 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2083 event pairs, 72 based on Foata normal form. 6/463 useless extension candidates. Maximal degree in co-relation 2231. Up to 377 conditions per place. [2024-06-27 23:35:11,717 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 75 selfloop transitions, 15 changer transitions 11/103 dead transitions. [2024-06-27 23:35:11,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 103 transitions, 957 flow [2024-06-27 23:35:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:35:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:35:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 23:35:11,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-27 23:35:11,718 INFO L175 Difference]: Start difference. First operand has 155 places, 87 transitions, 709 flow. Second operand 12 states and 125 transitions. [2024-06-27 23:35:11,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 103 transitions, 957 flow [2024-06-27 23:35:11,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 103 transitions, 913 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 23:35:11,754 INFO L231 Difference]: Finished difference. Result has 149 places, 84 transitions, 678 flow [2024-06-27 23:35:11,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=678, PETRI_PLACES=149, PETRI_TRANSITIONS=84} [2024-06-27 23:35:11,754 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2024-06-27 23:35:11,754 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 84 transitions, 678 flow [2024-06-27 23:35:11,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:11,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:11,755 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 23:35:11,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 23:35:11,755 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 23:35:11,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:11,755 INFO L85 PathProgramCache]: Analyzing trace with hash 639424333, now seen corresponding path program 8 times [2024-06-27 23:35:11,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:11,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498588078] [2024-06-27 23:35:11,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:11,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:13,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:13,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498588078] [2024-06-27 23:35:13,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498588078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:13,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:13,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:35:13,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215431771] [2024-06-27 23:35:13,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:13,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:35:13,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:13,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:35:13,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:35:13,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:13,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 84 transitions, 678 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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 23:35:13,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:13,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:13,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:14,291 INFO L124 PetriNetUnfolderBase]: 205/440 cut-off events. [2024-06-27 23:35:14,292 INFO L125 PetriNetUnfolderBase]: For 20593/20593 co-relation queries the response was YES. [2024-06-27 23:35:14,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2190 conditions, 440 events. 205/440 cut-off events. For 20593/20593 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1985 event pairs, 70 based on Foata normal form. 6/445 useless extension candidates. Maximal degree in co-relation 2119. Up to 346 conditions per place. [2024-06-27 23:35:14,294 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 71 selfloop transitions, 17 changer transitions 12/102 dead transitions. [2024-06-27 23:35:14,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 102 transitions, 936 flow [2024-06-27 23:35:14,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:35:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:35:14,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 23:35:14,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2024-06-27 23:35:14,295 INFO L175 Difference]: Start difference. First operand has 149 places, 84 transitions, 678 flow. Second operand 12 states and 128 transitions. [2024-06-27 23:35:14,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 102 transitions, 936 flow [2024-06-27 23:35:14,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 102 transitions, 900 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 23:35:14,325 INFO L231 Difference]: Finished difference. Result has 145 places, 80 transitions, 654 flow [2024-06-27 23:35:14,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=654, PETRI_PLACES=145, PETRI_TRANSITIONS=80} [2024-06-27 23:35:14,325 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2024-06-27 23:35:14,325 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 80 transitions, 654 flow [2024-06-27 23:35:14,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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 23:35:14,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:14,326 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 23:35:14,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 23:35:14,326 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 23:35:14,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:14,326 INFO L85 PathProgramCache]: Analyzing trace with hash -99362273, now seen corresponding path program 9 times [2024-06-27 23:35:14,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:14,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214546368] [2024-06-27 23:35:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:14,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:16,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:16,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214546368] [2024-06-27 23:35:16,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214546368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:16,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:16,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:16,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669137534] [2024-06-27 23:35:16,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:16,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:16,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:16,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:16,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:16,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:16,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 80 transitions, 654 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:16,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:16,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:16,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:16,582 INFO L124 PetriNetUnfolderBase]: 196/421 cut-off events. [2024-06-27 23:35:16,582 INFO L125 PetriNetUnfolderBase]: For 18849/18849 co-relation queries the response was YES. [2024-06-27 23:35:16,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 421 events. 196/421 cut-off events. For 18849/18849 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1862 event pairs, 70 based on Foata normal form. 6/426 useless extension candidates. Maximal degree in co-relation 2031. Up to 340 conditions per place. [2024-06-27 23:35:16,584 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 67 selfloop transitions, 12 changer transitions 15/96 dead transitions. [2024-06-27 23:35:16,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 96 transitions, 884 flow [2024-06-27 23:35:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:35:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:35:16,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-27 23:35:16,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-27 23:35:16,585 INFO L175 Difference]: Start difference. First operand has 145 places, 80 transitions, 654 flow. Second operand 12 states and 124 transitions. [2024-06-27 23:35:16,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 96 transitions, 884 flow [2024-06-27 23:35:16,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 96 transitions, 846 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:35:16,618 INFO L231 Difference]: Finished difference. Result has 141 places, 75 transitions, 604 flow [2024-06-27 23:35:16,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=604, PETRI_PLACES=141, PETRI_TRANSITIONS=75} [2024-06-27 23:35:16,618 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 112 predicate places. [2024-06-27 23:35:16,618 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 75 transitions, 604 flow [2024-06-27 23:35:16,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:16,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:16,619 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 23:35:16,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 23:35:16,619 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 23:35:16,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:16,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1832393873, now seen corresponding path program 10 times [2024-06-27 23:35:16,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:16,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135197529] [2024-06-27 23:35:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:16,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:18,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:18,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135197529] [2024-06-27 23:35:18,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135197529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:18,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:18,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 23:35:18,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463228259] [2024-06-27 23:35:18,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:18,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 23:35:18,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:18,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 23:35:18,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 23:35:18,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:18,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 75 transitions, 604 flow. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:18,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:18,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:18,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:18,350 INFO L124 PetriNetUnfolderBase]: 183/394 cut-off events. [2024-06-27 23:35:18,350 INFO L125 PetriNetUnfolderBase]: For 17951/17951 co-relation queries the response was YES. [2024-06-27 23:35:18,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1975 conditions, 394 events. 183/394 cut-off events. For 17951/17951 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1695 event pairs, 70 based on Foata normal form. 6/399 useless extension candidates. Maximal degree in co-relation 1907. Up to 329 conditions per place. [2024-06-27 23:35:18,352 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 63 selfloop transitions, 16 changer transitions 9/90 dead transitions. [2024-06-27 23:35:18,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 90 transitions, 816 flow [2024-06-27 23:35:18,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:35:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:35:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-27 23:35:18,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-27 23:35:18,353 INFO L175 Difference]: Start difference. First operand has 141 places, 75 transitions, 604 flow. Second operand 12 states and 123 transitions. [2024-06-27 23:35:18,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 90 transitions, 816 flow [2024-06-27 23:35:18,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 90 transitions, 782 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 23:35:18,377 INFO L231 Difference]: Finished difference. Result has 133 places, 72 transitions, 577 flow [2024-06-27 23:35:18,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=577, PETRI_PLACES=133, PETRI_TRANSITIONS=72} [2024-06-27 23:35:18,378 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 104 predicate places. [2024-06-27 23:35:18,378 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 72 transitions, 577 flow [2024-06-27 23:35:18,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 11 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:18,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:18,378 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 23:35:18,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 23:35:18,379 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 23:35:18,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:18,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1979114569, now seen corresponding path program 11 times [2024-06-27 23:35:18,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:18,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130287221] [2024-06-27 23:35:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:18,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:19,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:19,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130287221] [2024-06-27 23:35:19,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130287221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:19,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:19,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:19,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632650880] [2024-06-27 23:35:19,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:19,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:19,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:19,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:19,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:20,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:20,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 72 transitions, 577 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:20,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:20,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:20,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:20,322 INFO L124 PetriNetUnfolderBase]: 176/381 cut-off events. [2024-06-27 23:35:20,323 INFO L125 PetriNetUnfolderBase]: For 14717/14717 co-relation queries the response was YES. [2024-06-27 23:35:20,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1873 conditions, 381 events. 176/381 cut-off events. For 14717/14717 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1622 event pairs, 68 based on Foata normal form. 6/386 useless extension candidates. Maximal degree in co-relation 1809. Up to 295 conditions per place. [2024-06-27 23:35:20,325 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 61 selfloop transitions, 14 changer transitions 11/88 dead transitions. [2024-06-27 23:35:20,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 88 transitions, 787 flow [2024-06-27 23:35:20,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 23:35:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 23:35:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 131 transitions. [2024-06-27 23:35:20,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33589743589743587 [2024-06-27 23:35:20,326 INFO L175 Difference]: Start difference. First operand has 133 places, 72 transitions, 577 flow. Second operand 13 states and 131 transitions. [2024-06-27 23:35:20,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 88 transitions, 787 flow [2024-06-27 23:35:20,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 88 transitions, 734 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-27 23:35:20,347 INFO L231 Difference]: Finished difference. Result has 129 places, 67 transitions, 521 flow [2024-06-27 23:35:20,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=521, PETRI_PLACES=129, PETRI_TRANSITIONS=67} [2024-06-27 23:35:20,348 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 100 predicate places. [2024-06-27 23:35:20,348 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 67 transitions, 521 flow [2024-06-27 23:35:20,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:20,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:20,348 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 23:35:20,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 23:35:20,348 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 23:35:20,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2146352573, now seen corresponding path program 12 times [2024-06-27 23:35:20,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:20,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038935013] [2024-06-27 23:35:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:20,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:22,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:22,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038935013] [2024-06-27 23:35:22,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038935013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:22,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:22,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:22,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034413113] [2024-06-27 23:35:22,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:22,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:22,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:22,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:22,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 67 transitions, 521 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:22,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:22,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:22,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:22,506 INFO L124 PetriNetUnfolderBase]: 163/358 cut-off events. [2024-06-27 23:35:22,507 INFO L125 PetriNetUnfolderBase]: For 13959/13959 co-relation queries the response was YES. [2024-06-27 23:35:22,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1746 conditions, 358 events. 163/358 cut-off events. For 13959/13959 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1491 event pairs, 64 based on Foata normal form. 6/363 useless extension candidates. Maximal degree in co-relation 1685. Up to 289 conditions per place. [2024-06-27 23:35:22,508 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 57 selfloop transitions, 9 changer transitions 15/83 dead transitions. [2024-06-27 23:35:22,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 83 transitions, 721 flow [2024-06-27 23:35:22,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:35:22,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:35:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-27 23:35:22,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33055555555555555 [2024-06-27 23:35:22,510 INFO L175 Difference]: Start difference. First operand has 129 places, 67 transitions, 521 flow. Second operand 12 states and 119 transitions. [2024-06-27 23:35:22,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 83 transitions, 721 flow [2024-06-27 23:35:22,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 83 transitions, 677 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-06-27 23:35:22,527 INFO L231 Difference]: Finished difference. Result has 122 places, 62 transitions, 468 flow [2024-06-27 23:35:22,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=468, PETRI_PLACES=122, PETRI_TRANSITIONS=62} [2024-06-27 23:35:22,527 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 93 predicate places. [2024-06-27 23:35:22,527 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 62 transitions, 468 flow [2024-06-27 23:35:22,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:22,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:22,528 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 23:35:22,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 23:35:22,528 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 23:35:22,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash 833363743, now seen corresponding path program 13 times [2024-06-27 23:35:22,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:22,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590582512] [2024-06-27 23:35:22,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:22,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:24,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:24,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590582512] [2024-06-27 23:35:24,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590582512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:24,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:24,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:35:24,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596286178] [2024-06-27 23:35:24,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:24,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:35:24,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:24,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:35:24,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:35:24,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:24,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 62 transitions, 468 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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 23:35:24,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:24,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:24,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:25,046 INFO L124 PetriNetUnfolderBase]: 148/329 cut-off events. [2024-06-27 23:35:25,047 INFO L125 PetriNetUnfolderBase]: For 12497/12497 co-relation queries the response was YES. [2024-06-27 23:35:25,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 329 events. 148/329 cut-off events. For 12497/12497 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1335 event pairs, 62 based on Foata normal form. 6/334 useless extension candidates. Maximal degree in co-relation 1541. Up to 253 conditions per place. [2024-06-27 23:35:25,048 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 53 selfloop transitions, 12 changer transitions 11/78 dead transitions. [2024-06-27 23:35:25,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 78 transitions, 666 flow [2024-06-27 23:35:25,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:35:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:35:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-27 23:35:25,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33611111111111114 [2024-06-27 23:35:25,049 INFO L175 Difference]: Start difference. First operand has 122 places, 62 transitions, 468 flow. Second operand 12 states and 121 transitions. [2024-06-27 23:35:25,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 78 transitions, 666 flow [2024-06-27 23:35:25,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 78 transitions, 640 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:35:25,064 INFO L231 Difference]: Finished difference. Result has 115 places, 59 transitions, 450 flow [2024-06-27 23:35:25,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=450, PETRI_PLACES=115, PETRI_TRANSITIONS=59} [2024-06-27 23:35:25,064 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 86 predicate places. [2024-06-27 23:35:25,064 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 59 transitions, 450 flow [2024-06-27 23:35:25,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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 23:35:25,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:25,065 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 23:35:25,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 23:35:25,066 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 23:35:25,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:25,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1584225055, now seen corresponding path program 14 times [2024-06-27 23:35:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:25,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613547042] [2024-06-27 23:35:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:25,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:27,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:27,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613547042] [2024-06-27 23:35:27,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613547042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:27,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:27,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:35:27,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405830059] [2024-06-27 23:35:27,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:27,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:35:27,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:27,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:35:27,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:35:27,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:27,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 59 transitions, 450 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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 23:35:27,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:27,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:27,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:27,644 INFO L124 PetriNetUnfolderBase]: 120/273 cut-off events. [2024-06-27 23:35:27,644 INFO L125 PetriNetUnfolderBase]: For 7447/7447 co-relation queries the response was YES. [2024-06-27 23:35:27,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1146 conditions, 273 events. 120/273 cut-off events. For 7447/7447 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1038 event pairs, 54 based on Foata normal form. 8/280 useless extension candidates. Maximal degree in co-relation 1091. Up to 204 conditions per place. [2024-06-27 23:35:27,646 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 49 selfloop transitions, 12 changer transitions 9/72 dead transitions. [2024-06-27 23:35:27,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 72 transitions, 622 flow [2024-06-27 23:35:27,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:35:27,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:35:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-27 23:35:27,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33055555555555555 [2024-06-27 23:35:27,647 INFO L175 Difference]: Start difference. First operand has 115 places, 59 transitions, 450 flow. Second operand 12 states and 119 transitions. [2024-06-27 23:35:27,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 72 transitions, 622 flow [2024-06-27 23:35:27,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 72 transitions, 588 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 23:35:27,654 INFO L231 Difference]: Finished difference. Result has 111 places, 55 transitions, 410 flow [2024-06-27 23:35:27,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=410, PETRI_PLACES=111, PETRI_TRANSITIONS=55} [2024-06-27 23:35:27,654 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-27 23:35:27,654 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 55 transitions, 410 flow [2024-06-27 23:35:27,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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 23:35:27,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:27,655 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 23:35:27,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 23:35:27,655 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 23:35:27,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1577082655, now seen corresponding path program 15 times [2024-06-27 23:35:27,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:27,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027352707] [2024-06-27 23:35:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:27,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:29,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:29,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:29,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027352707] [2024-06-27 23:35:29,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027352707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:29,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:29,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:29,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574265343] [2024-06-27 23:35:29,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:29,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:29,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:29,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:29,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:29,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 55 transitions, 410 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:29,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:29,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:29,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:30,144 INFO L124 PetriNetUnfolderBase]: 111/258 cut-off events. [2024-06-27 23:35:30,144 INFO L125 PetriNetUnfolderBase]: For 5599/5599 co-relation queries the response was YES. [2024-06-27 23:35:30,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 258 events. 111/258 cut-off events. For 5599/5599 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 970 event pairs, 50 based on Foata normal form. 6/263 useless extension candidates. Maximal degree in co-relation 1003. Up to 194 conditions per place. [2024-06-27 23:35:30,145 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 42 selfloop transitions, 6 changer transitions 19/69 dead transitions. [2024-06-27 23:35:30,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 69 transitions, 578 flow [2024-06-27 23:35:30,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:35:30,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:35:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 117 transitions. [2024-06-27 23:35:30,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2024-06-27 23:35:30,146 INFO L175 Difference]: Start difference. First operand has 111 places, 55 transitions, 410 flow. Second operand 12 states and 117 transitions. [2024-06-27 23:35:30,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 69 transitions, 578 flow [2024-06-27 23:35:30,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 69 transitions, 535 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-27 23:35:30,152 INFO L231 Difference]: Finished difference. Result has 103 places, 46 transitions, 330 flow [2024-06-27 23:35:30,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=330, PETRI_PLACES=103, PETRI_TRANSITIONS=46} [2024-06-27 23:35:30,153 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 74 predicate places. [2024-06-27 23:35:30,153 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 46 transitions, 330 flow [2024-06-27 23:35:30,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:30,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:30,153 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 23:35:30,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 23:35:30,153 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 23:35:30,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:30,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1572133815, now seen corresponding path program 16 times [2024-06-27 23:35:30,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:30,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126275084] [2024-06-27 23:35:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:30,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:32,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:32,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126275084] [2024-06-27 23:35:32,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126275084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:32,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:32,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:32,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529737213] [2024-06-27 23:35:32,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:32,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:32,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:32,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:32,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:32,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-27 23:35:32,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 46 transitions, 330 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:32,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:32,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-27 23:35:32,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:32,574 INFO L124 PetriNetUnfolderBase]: 97/228 cut-off events. [2024-06-27 23:35:32,575 INFO L125 PetriNetUnfolderBase]: For 4873/4873 co-relation queries the response was YES. [2024-06-27 23:35:32,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903 conditions, 228 events. 97/228 cut-off events. For 4873/4873 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 797 event pairs, 54 based on Foata normal form. 6/233 useless extension candidates. Maximal degree in co-relation 853. Up to 164 conditions per place. [2024-06-27 23:35:32,576 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 34 selfloop transitions, 3 changer transitions 23/62 dead transitions. [2024-06-27 23:35:32,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 62 transitions, 490 flow [2024-06-27 23:35:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:35:32,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:35:32,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-27 23:35:32,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32222222222222224 [2024-06-27 23:35:32,577 INFO L175 Difference]: Start difference. First operand has 103 places, 46 transitions, 330 flow. Second operand 12 states and 116 transitions. [2024-06-27 23:35:32,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 62 transitions, 490 flow [2024-06-27 23:35:32,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 62 transitions, 449 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-27 23:35:32,581 INFO L231 Difference]: Finished difference. Result has 89 places, 38 transitions, 257 flow [2024-06-27 23:35:32,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=257, PETRI_PLACES=89, PETRI_TRANSITIONS=38} [2024-06-27 23:35:32,581 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-06-27 23:35:32,581 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 38 transitions, 257 flow [2024-06-27 23:35:32,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:32,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:32,582 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 23:35:32,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 23:35:32,582 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 23:35:32,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1142075553, now seen corresponding path program 17 times [2024-06-27 23:35:32,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:32,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572010369] [2024-06-27 23:35:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:32,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:34,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:34,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572010369] [2024-06-27 23:35:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572010369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:34,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:34,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984608837] [2024-06-27 23:35:34,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:34,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:34,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:34,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:34,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:34,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:35:34,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 38 transitions, 257 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:34,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:34,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:35:34,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:35,052 INFO L124 PetriNetUnfolderBase]: 82/191 cut-off events. [2024-06-27 23:35:35,052 INFO L125 PetriNetUnfolderBase]: For 3590/3590 co-relation queries the response was YES. [2024-06-27 23:35:35,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 191 events. 82/191 cut-off events. For 3590/3590 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 623 event pairs, 24 based on Foata normal form. 6/196 useless extension candidates. Maximal degree in co-relation 684. Up to 76 conditions per place. [2024-06-27 23:35:35,053 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 25 selfloop transitions, 14 changer transitions 9/50 dead transitions. [2024-06-27 23:35:35,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 50 transitions, 379 flow [2024-06-27 23:35:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:35:35,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:35:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 23:35:35,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:35:35,054 INFO L175 Difference]: Start difference. First operand has 89 places, 38 transitions, 257 flow. Second operand 10 states and 110 transitions. [2024-06-27 23:35:35,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 50 transitions, 379 flow [2024-06-27 23:35:35,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 50 transitions, 351 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-27 23:35:35,057 INFO L231 Difference]: Finished difference. Result has 72 places, 33 transitions, 217 flow [2024-06-27 23:35:35,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=217, PETRI_PLACES=72, PETRI_TRANSITIONS=33} [2024-06-27 23:35:35,057 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-27 23:35:35,057 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 33 transitions, 217 flow [2024-06-27 23:35:35,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:35,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:35,058 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 23:35:35,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 23:35:35,058 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 23:35:35,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:35,058 INFO L85 PathProgramCache]: Analyzing trace with hash 707691327, now seen corresponding path program 18 times [2024-06-27 23:35:35,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:35,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751482404] [2024-06-27 23:35:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:35,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:37,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:37,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:37,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751482404] [2024-06-27 23:35:37,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751482404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:37,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:37,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 23:35:37,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150331048] [2024-06-27 23:35:37,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:37,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 23:35:37,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:37,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 23:35:37,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 23:35:37,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:35:37,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 33 transitions, 217 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 23:35:37,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:37,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:35:37,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:37,896 INFO L124 PetriNetUnfolderBase]: 67/154 cut-off events. [2024-06-27 23:35:37,897 INFO L125 PetriNetUnfolderBase]: For 1818/1818 co-relation queries the response was YES. [2024-06-27 23:35:37,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 154 events. 67/154 cut-off events. For 1818/1818 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 460 event pairs, 19 based on Foata normal form. 6/159 useless extension candidates. Maximal degree in co-relation 540. Up to 72 conditions per place. [2024-06-27 23:35:37,897 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 24 selfloop transitions, 10 changer transitions 12/48 dead transitions. [2024-06-27 23:35:37,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 48 transitions, 341 flow [2024-06-27 23:35:37,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:35:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:35:37,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 23:35:37,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 23:35:37,898 INFO L175 Difference]: Start difference. First operand has 72 places, 33 transitions, 217 flow. Second operand 11 states and 121 transitions. [2024-06-27 23:35:37,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 48 transitions, 341 flow [2024-06-27 23:35:37,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 48 transitions, 273 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-27 23:35:37,900 INFO L231 Difference]: Finished difference. Result has 64 places, 29 transitions, 153 flow [2024-06-27 23:35:37,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=153, PETRI_PLACES=64, PETRI_TRANSITIONS=29} [2024-06-27 23:35:37,901 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-27 23:35:37,901 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 29 transitions, 153 flow [2024-06-27 23:35:37,901 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 23:35:37,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:37,901 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 23:35:37,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 23:35:37,902 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 23:35:37,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash -11753903, now seen corresponding path program 19 times [2024-06-27 23:35:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:37,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966550128] [2024-06-27 23:35:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:39,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:39,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966550128] [2024-06-27 23:35:39,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966550128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:39,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:39,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:39,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544816987] [2024-06-27 23:35:39,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:39,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:39,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:39,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:39,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:40,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:35:40,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 29 transitions, 153 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:40,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:40,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:35:40,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:40,346 INFO L124 PetriNetUnfolderBase]: 58/135 cut-off events. [2024-06-27 23:35:40,346 INFO L125 PetriNetUnfolderBase]: For 1737/1737 co-relation queries the response was YES. [2024-06-27 23:35:40,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 135 events. 58/135 cut-off events. For 1737/1737 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 369 event pairs, 19 based on Foata normal form. 6/140 useless extension candidates. Maximal degree in co-relation 442. Up to 62 conditions per place. [2024-06-27 23:35:40,347 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 21 selfloop transitions, 9 changer transitions 11/43 dead transitions. [2024-06-27 23:35:40,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 43 transitions, 265 flow [2024-06-27 23:35:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:35:40,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:35:40,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 23:35:40,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575757575757576 [2024-06-27 23:35:40,348 INFO L175 Difference]: Start difference. First operand has 64 places, 29 transitions, 153 flow. Second operand 11 states and 118 transitions. [2024-06-27 23:35:40,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 43 transitions, 265 flow [2024-06-27 23:35:40,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 43 transitions, 237 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 23:35:40,349 INFO L231 Difference]: Finished difference. Result has 58 places, 26 transitions, 132 flow [2024-06-27 23:35:40,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=132, PETRI_PLACES=58, PETRI_TRANSITIONS=26} [2024-06-27 23:35:40,349 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-27 23:35:40,349 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 26 transitions, 132 flow [2024-06-27 23:35:40,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:40,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:40,350 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 23:35:40,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 23:35:40,350 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 23:35:40,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:40,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1348220215, now seen corresponding path program 20 times [2024-06-27 23:35:40,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:40,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982269485] [2024-06-27 23:35:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:40,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:42,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:42,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982269485] [2024-06-27 23:35:42,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982269485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:42,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:42,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:42,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132204148] [2024-06-27 23:35:42,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:42,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:42,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:42,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:42,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:42,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:35:42,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 26 transitions, 132 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:42,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:42,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:35:42,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:43,025 INFO L124 PetriNetUnfolderBase]: 48/117 cut-off events. [2024-06-27 23:35:43,025 INFO L125 PetriNetUnfolderBase]: For 1180/1180 co-relation queries the response was YES. [2024-06-27 23:35:43,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 117 events. 48/117 cut-off events. For 1180/1180 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 296 event pairs, 19 based on Foata normal form. 6/122 useless extension candidates. Maximal degree in co-relation 372. Up to 52 conditions per place. [2024-06-27 23:35:43,026 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 17 selfloop transitions, 4 changer transitions 15/38 dead transitions. [2024-06-27 23:35:43,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 38 transitions, 230 flow [2024-06-27 23:35:43,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:35:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:35:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 23:35:43,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-06-27 23:35:43,027 INFO L175 Difference]: Start difference. First operand has 58 places, 26 transitions, 132 flow. Second operand 10 states and 107 transitions. [2024-06-27 23:35:43,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 38 transitions, 230 flow [2024-06-27 23:35:43,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 38 transitions, 206 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 23:35:43,029 INFO L231 Difference]: Finished difference. Result has 53 places, 21 transitions, 96 flow [2024-06-27 23:35:43,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=96, PETRI_PLACES=53, PETRI_TRANSITIONS=21} [2024-06-27 23:35:43,029 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-27 23:35:43,029 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 21 transitions, 96 flow [2024-06-27 23:35:43,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:43,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:35:43,030 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 23:35:43,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 23:35:43,030 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 23:35:43,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:35:43,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1824405947, now seen corresponding path program 21 times [2024-06-27 23:35:43,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:35:43,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994940813] [2024-06-27 23:35:43,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:35:43,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:35:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:35:44,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:35:44,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:35:44,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994940813] [2024-06-27 23:35:44,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994940813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:35:44,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:35:44,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 23:35:44,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904008499] [2024-06-27 23:35:44,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:35:44,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 23:35:44,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:35:44,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 23:35:44,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 23:35:45,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 23:35:45,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 21 transitions, 96 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:45,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:35:45,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 23:35:45,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:35:45,336 INFO L124 PetriNetUnfolderBase]: 23/62 cut-off events. [2024-06-27 23:35:45,336 INFO L125 PetriNetUnfolderBase]: For 436/436 co-relation queries the response was YES. [2024-06-27 23:35:45,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 62 events. 23/62 cut-off events. For 436/436 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 156. Up to 24 conditions per place. [2024-06-27 23:35:45,337 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-27 23:35:45,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 29 transitions, 142 flow [2024-06-27 23:35:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:35:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:35:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-27 23:35:45,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-27 23:35:45,338 INFO L175 Difference]: Start difference. First operand has 53 places, 21 transitions, 96 flow. Second operand 11 states and 105 transitions. [2024-06-27 23:35:45,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 29 transitions, 142 flow [2024-06-27 23:35:45,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 29 transitions, 118 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 23:35:45,338 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2024-06-27 23:35:45,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2024-06-27 23:35:45,339 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-06-27 23:35:45,339 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2024-06-27 23:35:45,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:35:45,357 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 23:35:45,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 23:35:45,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 23:35:45,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 23:35:45,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 23:35:45,361 INFO L445 BasicCegarLoop]: Path program histogram: [46, 27, 22, 21, 17, 14, 9, 6, 6, 6, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:35:45,364 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 23:35:45,364 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 23:35:45,368 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 23:35:45,368 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 23:35:45,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 11:35:45 BasicIcfg [2024-06-27 23:35:45,369 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 23:35:45,370 INFO L158 Benchmark]: Toolchain (without parser) took 412644.72ms. Allocated memory was 151.0MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 75.3MB in the beginning and 890.1MB in the end (delta: -814.7MB). Peak memory consumption was 621.1MB. Max. memory is 16.1GB. [2024-06-27 23:35:45,371 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 117.4MB. Free memory was 78.5MB in the beginning and 78.3MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:35:45,371 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 151.0MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 23:35:45,372 INFO L158 Benchmark]: CACSL2BoogieTranslator took 654.00ms. Allocated memory is still 151.0MB. Free memory was 75.1MB in the beginning and 100.3MB in the end (delta: -25.1MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2024-06-27 23:35:45,372 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.78ms. Allocated memory is still 151.0MB. Free memory was 100.3MB in the beginning and 94.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-27 23:35:45,372 INFO L158 Benchmark]: Boogie Preprocessor took 86.42ms. Allocated memory is still 151.0MB. Free memory was 94.0MB in the beginning and 89.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 23:35:45,372 INFO L158 Benchmark]: RCFGBuilder took 705.39ms. Allocated memory is still 151.0MB. Free memory was 89.7MB in the beginning and 77.4MB in the end (delta: 12.3MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. [2024-06-27 23:35:45,372 INFO L158 Benchmark]: TraceAbstraction took 411111.42ms. Allocated memory was 151.0MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 76.6MB in the beginning and 890.1MB in the end (delta: -813.5MB). Peak memory consumption was 620.6MB. Max. memory is 16.1GB. [2024-06-27 23:35:45,373 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 117.4MB. Free memory was 78.5MB in the beginning and 78.3MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 151.0MB. Free memory is still 123.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 654.00ms. Allocated memory is still 151.0MB. Free memory was 75.1MB in the beginning and 100.3MB in the end (delta: -25.1MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.78ms. Allocated memory is still 151.0MB. Free memory was 100.3MB in the beginning and 94.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.42ms. Allocated memory is still 151.0MB. Free memory was 94.0MB in the beginning and 89.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 705.39ms. Allocated memory is still 151.0MB. Free memory was 89.7MB in the beginning and 77.4MB in the end (delta: 12.3MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. * TraceAbstraction took 411111.42ms. Allocated memory was 151.0MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 76.6MB in the beginning and 890.1MB in the end (delta: -813.5MB). Peak memory consumption was 620.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 813]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 814]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 48 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 411.0s, OverallIterations: 199, TraceHistogramMax: 1, PathProgramHistogramMax: 46, EmptinessCheckTime: 0.0s, AutomataDifference: 128.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10651 SdHoareTripleChecker+Valid, 51.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8912 mSDsluCounter, 6467 SdHoareTripleChecker+Invalid, 44.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5295 mSDsCounter, 3055 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72674 IncrementalHoareTripleChecker+Invalid, 75729 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3055 mSolverCounterUnsat, 1172 mSDtfsCounter, 72674 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2229 GetRequests, 4 SyntacticMatches, 7 SemanticMatches, 2218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3380 ImplicationChecksByTransitivity, 62.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2916occurred in iteration=107, InterpolantAutomatonStates: 1965, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 277.8s InterpolantComputationTime, 3152 NumberOfCodeBlocks, 3152 NumberOfCodeBlocksAsserted, 199 NumberOfCheckSat, 2953 ConstructedInterpolants, 0 QuantifiedInterpolants, 140253 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 199 InterpolantComputations, 199 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 23:35:45,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE