./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix022_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix022_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:13:54,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:13:54,969 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:13:54,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:13:54,972 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:13:54,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:13:54,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:13:54,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:13:54,988 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:13:54,988 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:13:54,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:13:54,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:13:54,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:13:54,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:13:54,990 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:13:54,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:13:54,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:13:54,991 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:13:54,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:13:54,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:13:54,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:13:55,005 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:13:55,005 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:13:55,005 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:13:55,006 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:13:55,006 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:13:55,006 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:13:55,007 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:13:55,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:13:55,007 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:13:55,007 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:13:55,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:13:55,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:13:55,008 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:13:55,008 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:13:55,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:13:55,009 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:13:55,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:13:55,009 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:13:55,009 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:13:55,009 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:13:55,010 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:13:55,010 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:13:55,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:13:55,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:13:55,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:13:55,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:13:55,280 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:13:55,280 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:13:55,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-27 22:13:56,399 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:13:56,651 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:13:56,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-27 22:13:56,661 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ff734154/f1466ad1b5a94359a607361a49701d0e/FLAG4a5013195 [2024-06-27 22:13:56,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ff734154/f1466ad1b5a94359a607361a49701d0e [2024-06-27 22:13:56,676 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:13:56,680 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:13:56,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix022_tso.yml/witness.yml [2024-06-27 22:13:56,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:13:56,750 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:13:56,750 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:13:56,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:13:56,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:13:56,754 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:13:56" (1/2) ... [2024-06-27 22:13:56,755 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aca9be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:56, skipping insertion in model container [2024-06-27 22:13:56,755 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:13:56" (1/2) ... [2024-06-27 22:13:56,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@705e64f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:13:56, skipping insertion in model container [2024-06-27 22:13:56,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:13:56" (2/2) ... [2024-06-27 22:13:56,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aca9be0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:56, skipping insertion in model container [2024-06-27 22:13:56,758 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:13:56" (2/2) ... [2024-06-27 22:13:56,759 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:13:56,780 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:13:56,782 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ! multithreaded || (((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:13:56,782 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ! multithreaded || (((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p1_EBX) + (long long )y >= 0LL && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p1_EBX >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EBX) - (long long )y >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:13:56,782 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:13:56,782 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-27 22:13:56,818 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:13:56,951 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_tso.i[944,957] [2024-06-27 22:13:57,057 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:13:57,065 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:13:57,097 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_tso.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:13:57,212 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:13:57,248 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:13:57,249 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57 WrapperNode [2024-06-27 22:13:57,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:13:57,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:13:57,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:13:57,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:13:57,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (1/1) ... [2024-06-27 22:13:57,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (1/1) ... [2024-06-27 22:13:57,307 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2024-06-27 22:13:57,307 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:13:57,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:13:57,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:13:57,316 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:13:57,347 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (1/1) ... [2024-06-27 22:13:57,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (1/1) ... [2024-06-27 22:13:57,351 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (1/1) ... [2024-06-27 22:13:57,418 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 22:13:57,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (1/1) ... [2024-06-27 22:13:57,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (1/1) ... [2024-06-27 22:13:57,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (1/1) ... [2024-06-27 22:13:57,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (1/1) ... [2024-06-27 22:13:57,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (1/1) ... [2024-06-27 22:13:57,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (1/1) ... [2024-06-27 22:13:57,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:13:57,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:13:57,470 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:13:57,470 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:13:57,471 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (1/1) ... [2024-06-27 22:13:57,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:13:57,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:13:57,505 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 22:13:57,526 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 22:13:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:13:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:13:57,537 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:13:57,537 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:13:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:13:57,538 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:13:57,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:13:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:13:57,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:13:57,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:13:57,540 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 22:13:57,654 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:13:57,655 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:13:58,015 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:13:58,015 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:13:58,194 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:13:58,194 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:13:58,195 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:13:58 BoogieIcfgContainer [2024-06-27 22:13:58,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:13:58,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:13:58,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:13:58,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:13:58,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:13:56" (1/4) ... [2024-06-27 22:13:58,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e165c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:13:58, skipping insertion in model container [2024-06-27 22:13:58,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:13:56" (2/4) ... [2024-06-27 22:13:58,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e165c86 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:13:58, skipping insertion in model container [2024-06-27 22:13:58,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:13:57" (3/4) ... [2024-06-27 22:13:58,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e165c86 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:13:58, skipping insertion in model container [2024-06-27 22:13:58,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:13:58" (4/4) ... [2024-06-27 22:13:58,205 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_tso.i [2024-06-27 22:13:58,218 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:13:58,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 22:13:58,218 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:13:58,256 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:13:58,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-06-27 22:13:58,308 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-06-27 22:13:58,309 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:13:58,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-27 22:13:58,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-06-27 22:13:58,316 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 74 flow [2024-06-27 22:13:58,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:13:58,334 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;@102bb577, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:13:58,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 22:13:58,338 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:13:58,338 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:13:58,338 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:13:58,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:58,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:13:58,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:58,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:58,343 INFO L85 PathProgramCache]: Analyzing trace with hash 346938358, now seen corresponding path program 1 times [2024-06-27 22:13:58,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:58,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765466901] [2024-06-27 22:13:58,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:58,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:59,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:59,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:59,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765466901] [2024-06-27 22:13:59,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765466901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:59,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:59,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:13:59,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600549064] [2024-06-27 22:13:59,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:59,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:13:59,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:59,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:13:59,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:13:59,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-27 22:13:59,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:59,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:59,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-27 22:13:59,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:13:59,405 INFO L124 PetriNetUnfolderBase]: 529/930 cut-off events. [2024-06-27 22:13:59,405 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 22:13:59,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 930 events. 529/930 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4625 event pairs, 234 based on Foata normal form. 42/918 useless extension candidates. Maximal degree in co-relation 1817. Up to 870 conditions per place. [2024-06-27 22:13:59,414 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 32 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-06-27 22:13:59,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 167 flow [2024-06-27 22:13:59,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:13:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:13:59,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-27 22:13:59,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-06-27 22:13:59,425 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 74 flow. Second operand 3 states and 73 transitions. [2024-06-27 22:13:59,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 167 flow [2024-06-27 22:13:59,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:13:59,429 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 93 flow [2024-06-27 22:13:59,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-06-27 22:13:59,433 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-27 22:13:59,434 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 93 flow [2024-06-27 22:13:59,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:59,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:13:59,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:13:59,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:13:59,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:13:59,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:13:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1599562897, now seen corresponding path program 1 times [2024-06-27 22:13:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:13:59,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085696347] [2024-06-27 22:13:59,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:13:59,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:13:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:13:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:13:59,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:13:59,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085696347] [2024-06-27 22:13:59,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085696347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:13:59,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:13:59,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:13:59,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368075665] [2024-06-27 22:13:59,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:13:59,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:13:59,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:13:59,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:13:59,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:13:59,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:13:59,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:13:59,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:13:59,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:13:59,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:00,106 INFO L124 PetriNetUnfolderBase]: 593/990 cut-off events. [2024-06-27 22:14:00,107 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-27 22:14:00,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2192 conditions, 990 events. 593/990 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4740 event pairs, 212 based on Foata normal form. 2/958 useless extension candidates. Maximal degree in co-relation 2180. Up to 953 conditions per place. [2024-06-27 22:14:00,112 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 42 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-27 22:14:00,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 55 transitions, 233 flow [2024-06-27 22:14:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:14:00,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:14:00,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-06-27 22:14:00,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-27 22:14:00,115 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 93 flow. Second operand 4 states and 90 transitions. [2024-06-27 22:14:00,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 55 transitions, 233 flow [2024-06-27 22:14:00,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:14:00,119 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 119 flow [2024-06-27 22:14:00,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-27 22:14:00,120 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-06-27 22:14:00,120 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 119 flow [2024-06-27 22:14:00,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:00,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:00,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:00,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:14:00,121 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:00,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:00,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1953158983, now seen corresponding path program 1 times [2024-06-27 22:14:00,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:00,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706620944] [2024-06-27 22:14:00,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:00,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:00,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:00,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:00,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706620944] [2024-06-27 22:14:00,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706620944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:00,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:00,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:14:00,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009451929] [2024-06-27 22:14:00,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:00,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:14:00,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:00,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:14:00,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:14:00,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:14:00,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:00,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:00,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:14:00,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:00,810 INFO L124 PetriNetUnfolderBase]: 567/1085 cut-off events. [2024-06-27 22:14:00,810 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2024-06-27 22:14:00,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2407 conditions, 1085 events. 567/1085 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5827 event pairs, 201 based on Foata normal form. 4/1020 useless extension candidates. Maximal degree in co-relation 2393. Up to 896 conditions per place. [2024-06-27 22:14:00,815 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 47 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2024-06-27 22:14:00,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 316 flow [2024-06-27 22:14:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:14:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:14:00,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-27 22:14:00,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-27 22:14:00,817 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 119 flow. Second operand 5 states and 106 transitions. [2024-06-27 22:14:00,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 316 flow [2024-06-27 22:14:00,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 300 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:14:00,819 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 194 flow [2024-06-27 22:14:00,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2024-06-27 22:14:00,820 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-06-27 22:14:00,820 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 194 flow [2024-06-27 22:14:00,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:00,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:00,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:00,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:14:00,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:00,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:00,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1803458656, now seen corresponding path program 1 times [2024-06-27 22:14:00,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:00,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835516644] [2024-06-27 22:14:00,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:00,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:01,634 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 22:14:01,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:01,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835516644] [2024-06-27 22:14:01,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835516644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:01,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:01,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:14:01,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300238219] [2024-06-27 22:14:01,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:01,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:14:01,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:01,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:14:01,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:14:01,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:14:01,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 22:14:01,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:01,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:14:01,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:01,901 INFO L124 PetriNetUnfolderBase]: 548/1040 cut-off events. [2024-06-27 22:14:01,901 INFO L125 PetriNetUnfolderBase]: For 630/630 co-relation queries the response was YES. [2024-06-27 22:14:01,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2519 conditions, 1040 events. 548/1040 cut-off events. For 630/630 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5477 event pairs, 138 based on Foata normal form. 4/989 useless extension candidates. Maximal degree in co-relation 2502. Up to 837 conditions per place. [2024-06-27 22:14:01,905 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 50 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-06-27 22:14:01,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 374 flow [2024-06-27 22:14:01,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:14:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:14:01,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-27 22:14:01,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601851851851852 [2024-06-27 22:14:01,909 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 194 flow. Second operand 6 states and 121 transitions. [2024-06-27 22:14:01,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 374 flow [2024-06-27 22:14:01,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 70 transitions, 370 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:14:01,914 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 229 flow [2024-06-27 22:14:01,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 22:14:01,915 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2024-06-27 22:14:01,915 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 229 flow [2024-06-27 22:14:01,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 22:14:01,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:01,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:01,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:14:01,916 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:01,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:01,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1043512490, now seen corresponding path program 1 times [2024-06-27 22:14:01,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:01,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089442683] [2024-06-27 22:14:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:01,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:02,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:02,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089442683] [2024-06-27 22:14:02,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089442683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:02,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:02,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:14:02,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892400628] [2024-06-27 22:14:02,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:02,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:14:02,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:02,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:14:02,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:14:02,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:14:02,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:02,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:02,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:14:02,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:02,759 INFO L124 PetriNetUnfolderBase]: 524/1019 cut-off events. [2024-06-27 22:14:02,759 INFO L125 PetriNetUnfolderBase]: For 976/976 co-relation queries the response was YES. [2024-06-27 22:14:02,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2592 conditions, 1019 events. 524/1019 cut-off events. For 976/976 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5394 event pairs, 329 based on Foata normal form. 1/971 useless extension candidates. Maximal degree in co-relation 2571. Up to 858 conditions per place. [2024-06-27 22:14:02,764 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 46 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2024-06-27 22:14:02,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 404 flow [2024-06-27 22:14:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:14:02,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:14:02,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-27 22:14:02,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 22:14:02,766 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 229 flow. Second operand 6 states and 96 transitions. [2024-06-27 22:14:02,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 404 flow [2024-06-27 22:14:02,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 369 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 22:14:02,770 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 284 flow [2024-06-27 22:14:02,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-06-27 22:14:02,774 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-06-27 22:14:02,774 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 284 flow [2024-06-27 22:14:02,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:02,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:02,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:02,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:14:02,776 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:02,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:02,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2010850233, now seen corresponding path program 1 times [2024-06-27 22:14:02,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:02,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138728146] [2024-06-27 22:14:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:02,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:03,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:03,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138728146] [2024-06-27 22:14:03,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138728146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:03,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:03,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:14:03,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656190279] [2024-06-27 22:14:03,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:03,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:14:03,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:03,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:14:03,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:14:03,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:03,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:03,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:03,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:03,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:04,084 INFO L124 PetriNetUnfolderBase]: 617/1160 cut-off events. [2024-06-27 22:14:04,085 INFO L125 PetriNetUnfolderBase]: For 1203/1203 co-relation queries the response was YES. [2024-06-27 22:14:04,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3084 conditions, 1160 events. 617/1160 cut-off events. For 1203/1203 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5991 event pairs, 387 based on Foata normal form. 1/1106 useless extension candidates. Maximal degree in co-relation 3059. Up to 997 conditions per place. [2024-06-27 22:14:04,090 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 51 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-27 22:14:04,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 70 transitions, 454 flow [2024-06-27 22:14:04,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:04,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-06-27 22:14:04,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-27 22:14:04,092 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 284 flow. Second operand 7 states and 106 transitions. [2024-06-27 22:14:04,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 70 transitions, 454 flow [2024-06-27 22:14:04,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 450 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 22:14:04,094 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 332 flow [2024-06-27 22:14:04,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-06-27 22:14:04,095 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2024-06-27 22:14:04,095 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 332 flow [2024-06-27 22:14:04,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:04,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:04,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:04,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:14:04,096 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:04,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:04,096 INFO L85 PathProgramCache]: Analyzing trace with hash -627970037, now seen corresponding path program 1 times [2024-06-27 22:14:04,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:04,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812816441] [2024-06-27 22:14:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:04,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:04,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:04,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812816441] [2024-06-27 22:14:04,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812816441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:04,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:04,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:14:04,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802289155] [2024-06-27 22:14:04,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:04,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:14:04,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:04,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:14:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:14:04,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:04,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:04,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:04,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:04,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:04,941 INFO L124 PetriNetUnfolderBase]: 634/1188 cut-off events. [2024-06-27 22:14:04,941 INFO L125 PetriNetUnfolderBase]: For 1603/1603 co-relation queries the response was YES. [2024-06-27 22:14:04,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3383 conditions, 1188 events. 634/1188 cut-off events. For 1603/1603 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6104 event pairs, 362 based on Foata normal form. 1/1134 useless extension candidates. Maximal degree in co-relation 3355. Up to 1014 conditions per place. [2024-06-27 22:14:04,947 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 62 selfloop transitions, 17 changer transitions 0/85 dead transitions. [2024-06-27 22:14:04,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 85 transitions, 584 flow [2024-06-27 22:14:04,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:04,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-27 22:14:04,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-27 22:14:04,949 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 332 flow. Second operand 7 states and 114 transitions. [2024-06-27 22:14:04,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 85 transitions, 584 flow [2024-06-27 22:14:04,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 554 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:14:04,952 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 419 flow [2024-06-27 22:14:04,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-06-27 22:14:04,953 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2024-06-27 22:14:04,953 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 419 flow [2024-06-27 22:14:04,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:04,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:04,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:04,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:14:04,954 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:04,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:04,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1777638655, now seen corresponding path program 2 times [2024-06-27 22:14:04,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:04,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121335069] [2024-06-27 22:14:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:04,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:05,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:05,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:05,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121335069] [2024-06-27 22:14:05,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121335069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:05,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:05,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:14:05,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086273557] [2024-06-27 22:14:05,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:05,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:14:05,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:05,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:14:05,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:14:05,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:05,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 419 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:05,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:05,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:05,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:05,859 INFO L124 PetriNetUnfolderBase]: 650/1213 cut-off events. [2024-06-27 22:14:05,859 INFO L125 PetriNetUnfolderBase]: For 2200/2200 co-relation queries the response was YES. [2024-06-27 22:14:05,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 1213 events. 650/1213 cut-off events. For 2200/2200 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6233 event pairs, 359 based on Foata normal form. 1/1158 useless extension candidates. Maximal degree in co-relation 3708. Up to 1034 conditions per place. [2024-06-27 22:14:05,865 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 61 selfloop transitions, 23 changer transitions 0/90 dead transitions. [2024-06-27 22:14:05,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 90 transitions, 693 flow [2024-06-27 22:14:05,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:14:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:14:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-27 22:14:05,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 22:14:05,866 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 419 flow. Second operand 6 states and 100 transitions. [2024-06-27 22:14:05,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 90 transitions, 693 flow [2024-06-27 22:14:05,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 90 transitions, 666 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 22:14:05,871 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 536 flow [2024-06-27 22:14:05,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=536, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2024-06-27 22:14:05,873 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-06-27 22:14:05,873 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 536 flow [2024-06-27 22:14:05,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:05,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:05,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:05,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:14:05,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:05,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2088144265, now seen corresponding path program 3 times [2024-06-27 22:14:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:05,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855571499] [2024-06-27 22:14:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:05,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:06,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855571499] [2024-06-27 22:14:06,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855571499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:06,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:06,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:14:06,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366064334] [2024-06-27 22:14:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:06,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:14:06,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:14:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:14:06,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:06,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 536 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:06,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:06,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:06,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:06,750 INFO L124 PetriNetUnfolderBase]: 648/1210 cut-off events. [2024-06-27 22:14:06,750 INFO L125 PetriNetUnfolderBase]: For 2816/2816 co-relation queries the response was YES. [2024-06-27 22:14:06,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3954 conditions, 1210 events. 648/1210 cut-off events. For 2816/2816 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6211 event pairs, 362 based on Foata normal form. 1/1155 useless extension candidates. Maximal degree in co-relation 3922. Up to 1010 conditions per place. [2024-06-27 22:14:06,757 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 56 selfloop transitions, 31 changer transitions 0/93 dead transitions. [2024-06-27 22:14:06,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 93 transitions, 764 flow [2024-06-27 22:14:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-27 22:14:06,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 22:14:06,758 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 536 flow. Second operand 7 states and 108 transitions. [2024-06-27 22:14:06,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 93 transitions, 764 flow [2024-06-27 22:14:06,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 93 transitions, 741 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 22:14:06,762 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 611 flow [2024-06-27 22:14:06,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=611, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2024-06-27 22:14:06,763 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 37 predicate places. [2024-06-27 22:14:06,763 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 611 flow [2024-06-27 22:14:06,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:06,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:06,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:06,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:14:06,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:06,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1783391263, now seen corresponding path program 1 times [2024-06-27 22:14:06,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:06,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308319338] [2024-06-27 22:14:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:06,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:08,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:08,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:08,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308319338] [2024-06-27 22:14:08,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308319338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:08,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:08,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:08,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056607982] [2024-06-27 22:14:08,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:08,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:08,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:08,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:08,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:08,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:08,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 611 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:08,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:08,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:08,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:08,538 INFO L124 PetriNetUnfolderBase]: 648/1208 cut-off events. [2024-06-27 22:14:08,538 INFO L125 PetriNetUnfolderBase]: For 3618/3618 co-relation queries the response was YES. [2024-06-27 22:14:08,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4142 conditions, 1208 events. 648/1208 cut-off events. For 3618/3618 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6209 event pairs, 366 based on Foata normal form. 2/1155 useless extension candidates. Maximal degree in co-relation 4107. Up to 1026 conditions per place. [2024-06-27 22:14:08,545 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 80 selfloop transitions, 16 changer transitions 0/102 dead transitions. [2024-06-27 22:14:08,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 102 transitions, 881 flow [2024-06-27 22:14:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-27 22:14:08,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-27 22:14:08,547 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 611 flow. Second operand 7 states and 114 transitions. [2024-06-27 22:14:08,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 102 transitions, 881 flow [2024-06-27 22:14:08,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 102 transitions, 805 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 22:14:08,553 INFO L231 Difference]: Finished difference. Result has 79 places, 85 transitions, 597 flow [2024-06-27 22:14:08,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=597, PETRI_PLACES=79, PETRI_TRANSITIONS=85} [2024-06-27 22:14:08,554 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 39 predicate places. [2024-06-27 22:14:08,555 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 85 transitions, 597 flow [2024-06-27 22:14:08,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:08,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:08,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:08,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:14:08,557 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:08,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:08,557 INFO L85 PathProgramCache]: Analyzing trace with hash 243553497, now seen corresponding path program 1 times [2024-06-27 22:14:08,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:08,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309995731] [2024-06-27 22:14:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:08,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:09,071 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 22:14:09,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:09,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309995731] [2024-06-27 22:14:09,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309995731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:09,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:09,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:09,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622653187] [2024-06-27 22:14:09,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:09,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:09,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:09,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:09,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:09,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:09,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 85 transitions, 597 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:09,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:09,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:09,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:09,453 INFO L124 PetriNetUnfolderBase]: 667/1233 cut-off events. [2024-06-27 22:14:09,453 INFO L125 PetriNetUnfolderBase]: For 3956/3956 co-relation queries the response was YES. [2024-06-27 22:14:09,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4356 conditions, 1233 events. 667/1233 cut-off events. For 3956/3956 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6301 event pairs, 209 based on Foata normal form. 1/1179 useless extension candidates. Maximal degree in co-relation 4320. Up to 1010 conditions per place. [2024-06-27 22:14:09,461 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 82 selfloop transitions, 33 changer transitions 0/121 dead transitions. [2024-06-27 22:14:09,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 121 transitions, 974 flow [2024-06-27 22:14:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 22:14:09,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 22:14:09,462 INFO L175 Difference]: Start difference. First operand has 79 places, 85 transitions, 597 flow. Second operand 8 states and 136 transitions. [2024-06-27 22:14:09,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 121 transitions, 974 flow [2024-06-27 22:14:09,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 121 transitions, 934 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 22:14:09,469 INFO L231 Difference]: Finished difference. Result has 83 places, 99 transitions, 737 flow [2024-06-27 22:14:09,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=737, PETRI_PLACES=83, PETRI_TRANSITIONS=99} [2024-06-27 22:14:09,470 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 43 predicate places. [2024-06-27 22:14:09,470 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 99 transitions, 737 flow [2024-06-27 22:14:09,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:09,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:09,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:09,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:14:09,470 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:09,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:09,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1459583763, now seen corresponding path program 2 times [2024-06-27 22:14:09,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:09,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988962063] [2024-06-27 22:14:09,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:09,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:09,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:09,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988962063] [2024-06-27 22:14:09,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988962063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:09,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:09,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:09,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41782701] [2024-06-27 22:14:09,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:09,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:09,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:09,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:09,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:10,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:10,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 99 transitions, 737 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:10,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:10,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:10,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:10,399 INFO L124 PetriNetUnfolderBase]: 711/1300 cut-off events. [2024-06-27 22:14:10,400 INFO L125 PetriNetUnfolderBase]: For 4988/4988 co-relation queries the response was YES. [2024-06-27 22:14:10,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4945 conditions, 1300 events. 711/1300 cut-off events. For 4988/4988 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6636 event pairs, 227 based on Foata normal form. 1/1246 useless extension candidates. Maximal degree in co-relation 4907. Up to 1051 conditions per place. [2024-06-27 22:14:10,411 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 90 selfloop transitions, 47 changer transitions 0/143 dead transitions. [2024-06-27 22:14:10,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 143 transitions, 1287 flow [2024-06-27 22:14:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:10,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:10,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 22:14:10,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 22:14:10,416 INFO L175 Difference]: Start difference. First operand has 83 places, 99 transitions, 737 flow. Second operand 8 states and 138 transitions. [2024-06-27 22:14:10,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 143 transitions, 1287 flow [2024-06-27 22:14:10,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 143 transitions, 1194 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-06-27 22:14:10,427 INFO L231 Difference]: Finished difference. Result has 92 places, 122 transitions, 1035 flow [2024-06-27 22:14:10,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1035, PETRI_PLACES=92, PETRI_TRANSITIONS=122} [2024-06-27 22:14:10,427 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 52 predicate places. [2024-06-27 22:14:10,427 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 122 transitions, 1035 flow [2024-06-27 22:14:10,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:10,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:10,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:10,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:14:10,428 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:10,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:10,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2007391271, now seen corresponding path program 3 times [2024-06-27 22:14:10,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:10,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793924202] [2024-06-27 22:14:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:11,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:11,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793924202] [2024-06-27 22:14:11,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793924202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:11,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:11,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:11,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022836426] [2024-06-27 22:14:11,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:11,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:11,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:11,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:11,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:11,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:11,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 122 transitions, 1035 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:11,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:11,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:11,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:11,548 INFO L124 PetriNetUnfolderBase]: 737/1339 cut-off events. [2024-06-27 22:14:11,548 INFO L125 PetriNetUnfolderBase]: For 6490/6490 co-relation queries the response was YES. [2024-06-27 22:14:11,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5621 conditions, 1339 events. 737/1339 cut-off events. For 6490/6490 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6840 event pairs, 221 based on Foata normal form. 1/1284 useless extension candidates. Maximal degree in co-relation 5578. Up to 1028 conditions per place. [2024-06-27 22:14:11,557 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 99 selfloop transitions, 49 changer transitions 0/154 dead transitions. [2024-06-27 22:14:11,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 154 transitions, 1541 flow [2024-06-27 22:14:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:11,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:11,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:14:11,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 22:14:11,559 INFO L175 Difference]: Start difference. First operand has 92 places, 122 transitions, 1035 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:14:11,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 154 transitions, 1541 flow [2024-06-27 22:14:11,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 154 transitions, 1466 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 22:14:11,574 INFO L231 Difference]: Finished difference. Result has 98 places, 130 transitions, 1194 flow [2024-06-27 22:14:11,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1194, PETRI_PLACES=98, PETRI_TRANSITIONS=130} [2024-06-27 22:14:11,575 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2024-06-27 22:14:11,575 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 130 transitions, 1194 flow [2024-06-27 22:14:11,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:11,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:11,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:11,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:14:11,575 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:11,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:11,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1997560458, now seen corresponding path program 1 times [2024-06-27 22:14:11,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:11,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405078101] [2024-06-27 22:14:11,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:11,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:12,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:12,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405078101] [2024-06-27 22:14:12,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405078101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:12,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:12,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:12,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013486428] [2024-06-27 22:14:12,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:12,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:12,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:12,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:12,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:12,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:12,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 130 transitions, 1194 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:12,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:12,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:12,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:12,980 INFO L124 PetriNetUnfolderBase]: 747/1356 cut-off events. [2024-06-27 22:14:12,981 INFO L125 PetriNetUnfolderBase]: For 8225/8225 co-relation queries the response was YES. [2024-06-27 22:14:12,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6052 conditions, 1356 events. 747/1356 cut-off events. For 8225/8225 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6965 event pairs, 269 based on Foata normal form. 1/1303 useless extension candidates. Maximal degree in co-relation 6007. Up to 1171 conditions per place. [2024-06-27 22:14:12,989 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 120 selfloop transitions, 27 changer transitions 0/153 dead transitions. [2024-06-27 22:14:12,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 153 transitions, 1594 flow [2024-06-27 22:14:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 22:14:12,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-27 22:14:12,992 INFO L175 Difference]: Start difference. First operand has 98 places, 130 transitions, 1194 flow. Second operand 8 states and 129 transitions. [2024-06-27 22:14:12,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 153 transitions, 1594 flow [2024-06-27 22:14:13,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 153 transitions, 1484 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 22:14:13,005 INFO L231 Difference]: Finished difference. Result has 101 places, 133 transitions, 1181 flow [2024-06-27 22:14:13,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1181, PETRI_PLACES=101, PETRI_TRANSITIONS=133} [2024-06-27 22:14:13,006 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 61 predicate places. [2024-06-27 22:14:13,006 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 133 transitions, 1181 flow [2024-06-27 22:14:13,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:13,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:13,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:13,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:14:13,007 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:13,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:13,007 INFO L85 PathProgramCache]: Analyzing trace with hash -727896715, now seen corresponding path program 4 times [2024-06-27 22:14:13,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:13,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318916957] [2024-06-27 22:14:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:13,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:13,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:13,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318916957] [2024-06-27 22:14:13,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318916957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:13,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:13,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:13,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435031529] [2024-06-27 22:14:13,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:13,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:13,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:13,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:13,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 133 transitions, 1181 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:13,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:13,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:13,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:14,133 INFO L124 PetriNetUnfolderBase]: 787/1410 cut-off events. [2024-06-27 22:14:14,134 INFO L125 PetriNetUnfolderBase]: For 8749/8749 co-relation queries the response was YES. [2024-06-27 22:14:14,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6456 conditions, 1410 events. 787/1410 cut-off events. For 8749/8749 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7214 event pairs, 195 based on Foata normal form. 1/1353 useless extension candidates. Maximal degree in co-relation 6410. Up to 1148 conditions per place. [2024-06-27 22:14:14,163 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 109 selfloop transitions, 60 changer transitions 0/175 dead transitions. [2024-06-27 22:14:14,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 175 transitions, 1829 flow [2024-06-27 22:14:14,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:14,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:14,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 22:14:14,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 22:14:14,166 INFO L175 Difference]: Start difference. First operand has 101 places, 133 transitions, 1181 flow. Second operand 8 states and 133 transitions. [2024-06-27 22:14:14,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 175 transitions, 1829 flow [2024-06-27 22:14:14,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 175 transitions, 1764 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 22:14:14,181 INFO L231 Difference]: Finished difference. Result has 105 places, 159 transitions, 1583 flow [2024-06-27 22:14:14,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1116, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1583, PETRI_PLACES=105, PETRI_TRANSITIONS=159} [2024-06-27 22:14:14,182 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2024-06-27 22:14:14,182 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 159 transitions, 1583 flow [2024-06-27 22:14:14,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:14,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:14,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:14,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:14:14,182 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:14,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash 300612070, now seen corresponding path program 2 times [2024-06-27 22:14:14,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:14,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856851640] [2024-06-27 22:14:14,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:14,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:15,113 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 22:14:15,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:15,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856851640] [2024-06-27 22:14:15,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856851640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:15,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:15,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644915786] [2024-06-27 22:14:15,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:15,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:15,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:15,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:15,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:15,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:15,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 159 transitions, 1583 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:15,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:15,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:15,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:15,580 INFO L124 PetriNetUnfolderBase]: 803/1442 cut-off events. [2024-06-27 22:14:15,581 INFO L125 PetriNetUnfolderBase]: For 10457/10457 co-relation queries the response was YES. [2024-06-27 22:14:15,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6994 conditions, 1442 events. 803/1442 cut-off events. For 10457/10457 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7415 event pairs, 268 based on Foata normal form. 1/1388 useless extension candidates. Maximal degree in co-relation 6945. Up to 1253 conditions per place. [2024-06-27 22:14:15,588 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 145 selfloop transitions, 29 changer transitions 0/180 dead transitions. [2024-06-27 22:14:15,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 180 transitions, 2047 flow [2024-06-27 22:14:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 22:14:15,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45634920634920634 [2024-06-27 22:14:15,591 INFO L175 Difference]: Start difference. First operand has 105 places, 159 transitions, 1583 flow. Second operand 7 states and 115 transitions. [2024-06-27 22:14:15,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 180 transitions, 2047 flow [2024-06-27 22:14:15,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 180 transitions, 1977 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-06-27 22:14:15,605 INFO L231 Difference]: Finished difference. Result has 110 places, 165 transitions, 1647 flow [2024-06-27 22:14:15,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1647, PETRI_PLACES=110, PETRI_TRANSITIONS=165} [2024-06-27 22:14:15,606 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 70 predicate places. [2024-06-27 22:14:15,606 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 165 transitions, 1647 flow [2024-06-27 22:14:15,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:15,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:15,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:15,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:14:15,606 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:15,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:15,607 INFO L85 PathProgramCache]: Analyzing trace with hash -727775815, now seen corresponding path program 5 times [2024-06-27 22:14:15,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:15,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745488570] [2024-06-27 22:14:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:15,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:16,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:16,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:16,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745488570] [2024-06-27 22:14:16,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745488570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:16,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:16,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:16,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541730384] [2024-06-27 22:14:16,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:16,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:16,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:16,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:16,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:16,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:16,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 165 transitions, 1647 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:16,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:16,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:16,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:16,741 INFO L124 PetriNetUnfolderBase]: 845/1497 cut-off events. [2024-06-27 22:14:16,741 INFO L125 PetriNetUnfolderBase]: For 12150/12150 co-relation queries the response was YES. [2024-06-27 22:14:16,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 1497 events. 845/1497 cut-off events. For 12150/12150 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7676 event pairs, 198 based on Foata normal form. 1/1440 useless extension candidates. Maximal degree in co-relation 7511. Up to 1167 conditions per place. [2024-06-27 22:14:16,750 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 130 selfloop transitions, 64 changer transitions 0/200 dead transitions. [2024-06-27 22:14:16,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 200 transitions, 2346 flow [2024-06-27 22:14:16,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:16,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:16,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 22:14:16,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 22:14:16,752 INFO L175 Difference]: Start difference. First operand has 110 places, 165 transitions, 1647 flow. Second operand 8 states and 135 transitions. [2024-06-27 22:14:16,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 200 transitions, 2346 flow [2024-06-27 22:14:16,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 200 transitions, 2278 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 22:14:16,769 INFO L231 Difference]: Finished difference. Result has 114 places, 181 transitions, 1974 flow [2024-06-27 22:14:16,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1974, PETRI_PLACES=114, PETRI_TRANSITIONS=181} [2024-06-27 22:14:16,770 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 74 predicate places. [2024-06-27 22:14:16,770 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 181 transitions, 1974 flow [2024-06-27 22:14:16,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:16,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:16,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:16,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:14:16,771 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:16,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:16,771 INFO L85 PathProgramCache]: Analyzing trace with hash -549714078, now seen corresponding path program 3 times [2024-06-27 22:14:16,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:16,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079444176] [2024-06-27 22:14:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:16,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:17,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:17,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079444176] [2024-06-27 22:14:17,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079444176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:17,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:17,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:17,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386232550] [2024-06-27 22:14:17,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:17,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:17,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:17,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:17,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:17,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 181 transitions, 1974 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:17,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:17,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:17,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:18,171 INFO L124 PetriNetUnfolderBase]: 857/1523 cut-off events. [2024-06-27 22:14:18,172 INFO L125 PetriNetUnfolderBase]: For 15448/15448 co-relation queries the response was YES. [2024-06-27 22:14:18,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8213 conditions, 1523 events. 857/1523 cut-off events. For 15448/15448 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7915 event pairs, 261 based on Foata normal form. 1/1469 useless extension candidates. Maximal degree in co-relation 8161. Up to 1279 conditions per place. [2024-06-27 22:14:18,182 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 150 selfloop transitions, 48 changer transitions 0/204 dead transitions. [2024-06-27 22:14:18,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 204 transitions, 2584 flow [2024-06-27 22:14:18,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:18,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-27 22:14:18,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-27 22:14:18,184 INFO L175 Difference]: Start difference. First operand has 114 places, 181 transitions, 1974 flow. Second operand 7 states and 118 transitions. [2024-06-27 22:14:18,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 204 transitions, 2584 flow [2024-06-27 22:14:18,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 204 transitions, 2490 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 22:14:18,207 INFO L231 Difference]: Finished difference. Result has 117 places, 187 transitions, 2080 flow [2024-06-27 22:14:18,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2080, PETRI_PLACES=117, PETRI_TRANSITIONS=187} [2024-06-27 22:14:18,207 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 77 predicate places. [2024-06-27 22:14:18,208 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 187 transitions, 2080 flow [2024-06-27 22:14:18,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:18,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:18,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:18,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:14:18,208 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:18,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:18,209 INFO L85 PathProgramCache]: Analyzing trace with hash 307963720, now seen corresponding path program 4 times [2024-06-27 22:14:18,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:18,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141581123] [2024-06-27 22:14:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:18,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:19,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:19,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141581123] [2024-06-27 22:14:19,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141581123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:19,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:19,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:19,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931718494] [2024-06-27 22:14:19,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:19,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:19,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:19,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:19,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:19,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:19,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 187 transitions, 2080 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:19,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:19,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:19,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:19,561 INFO L124 PetriNetUnfolderBase]: 855/1520 cut-off events. [2024-06-27 22:14:19,562 INFO L125 PetriNetUnfolderBase]: For 15878/15878 co-relation queries the response was YES. [2024-06-27 22:14:19,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8407 conditions, 1520 events. 855/1520 cut-off events. For 15878/15878 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7867 event pairs, 275 based on Foata normal form. 1/1466 useless extension candidates. Maximal degree in co-relation 8353. Up to 1315 conditions per place. [2024-06-27 22:14:19,571 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 164 selfloop transitions, 34 changer transitions 0/204 dead transitions. [2024-06-27 22:14:19,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 204 transitions, 2572 flow [2024-06-27 22:14:19,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:19,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-27 22:14:19,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-27 22:14:19,574 INFO L175 Difference]: Start difference. First operand has 117 places, 187 transitions, 2080 flow. Second operand 7 states and 114 transitions. [2024-06-27 22:14:19,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 204 transitions, 2572 flow [2024-06-27 22:14:19,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 204 transitions, 2479 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 22:14:19,596 INFO L231 Difference]: Finished difference. Result has 121 places, 190 transitions, 2117 flow [2024-06-27 22:14:19,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2117, PETRI_PLACES=121, PETRI_TRANSITIONS=190} [2024-06-27 22:14:19,597 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 81 predicate places. [2024-06-27 22:14:19,597 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 190 transitions, 2117 flow [2024-06-27 22:14:19,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:19,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:19,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:19,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:14:19,598 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:19,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:19,599 INFO L85 PathProgramCache]: Analyzing trace with hash -549721735, now seen corresponding path program 6 times [2024-06-27 22:14:19,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:19,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183058096] [2024-06-27 22:14:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:19,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:20,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:20,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:20,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183058096] [2024-06-27 22:14:20,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183058096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:20,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:20,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:20,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093704033] [2024-06-27 22:14:20,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:20,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:20,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:20,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:20,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:20,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:20,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 190 transitions, 2117 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:20,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:20,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:20,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:20,792 INFO L124 PetriNetUnfolderBase]: 855/1518 cut-off events. [2024-06-27 22:14:20,793 INFO L125 PetriNetUnfolderBase]: For 16295/16295 co-relation queries the response was YES. [2024-06-27 22:14:20,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 1518 events. 855/1518 cut-off events. For 16295/16295 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7845 event pairs, 202 based on Foata normal form. 1/1460 useless extension candidates. Maximal degree in co-relation 8419. Up to 1077 conditions per place. [2024-06-27 22:14:20,803 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 136 selfloop transitions, 79 changer transitions 0/221 dead transitions. [2024-06-27 22:14:20,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 221 transitions, 2939 flow [2024-06-27 22:14:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 22:14:20,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 22:14:20,807 INFO L175 Difference]: Start difference. First operand has 121 places, 190 transitions, 2117 flow. Second operand 8 states and 136 transitions. [2024-06-27 22:14:20,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 221 transitions, 2939 flow [2024-06-27 22:14:20,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 221 transitions, 2843 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 22:14:20,833 INFO L231 Difference]: Finished difference. Result has 126 places, 201 transitions, 2458 flow [2024-06-27 22:14:20,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2458, PETRI_PLACES=126, PETRI_TRANSITIONS=201} [2024-06-27 22:14:20,834 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 86 predicate places. [2024-06-27 22:14:20,834 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 201 transitions, 2458 flow [2024-06-27 22:14:20,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:20,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:20,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:20,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:14:20,835 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:20,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:20,835 INFO L85 PathProgramCache]: Analyzing trace with hash 263492288, now seen corresponding path program 1 times [2024-06-27 22:14:20,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:20,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459420591] [2024-06-27 22:14:20,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:20,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:21,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:21,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459420591] [2024-06-27 22:14:21,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459420591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:21,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:21,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:21,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870314735] [2024-06-27 22:14:21,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:21,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:21,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:21,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:21,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:21,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:21,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 201 transitions, 2458 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:21,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:21,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:21,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:21,932 INFO L124 PetriNetUnfolderBase]: 896/1589 cut-off events. [2024-06-27 22:14:21,932 INFO L125 PetriNetUnfolderBase]: For 20470/20470 co-relation queries the response was YES. [2024-06-27 22:14:21,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9598 conditions, 1589 events. 896/1589 cut-off events. For 20470/20470 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8298 event pairs, 254 based on Foata normal form. 1/1535 useless extension candidates. Maximal degree in co-relation 9539. Up to 1291 conditions per place. [2024-06-27 22:14:21,943 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 162 selfloop transitions, 71 changer transitions 0/239 dead transitions. [2024-06-27 22:14:21,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 239 transitions, 3241 flow [2024-06-27 22:14:21,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-27 22:14:21,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198412698412699 [2024-06-27 22:14:21,945 INFO L175 Difference]: Start difference. First operand has 126 places, 201 transitions, 2458 flow. Second operand 7 states and 131 transitions. [2024-06-27 22:14:21,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 239 transitions, 3241 flow [2024-06-27 22:14:21,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 239 transitions, 3101 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-27 22:14:21,989 INFO L231 Difference]: Finished difference. Result has 131 places, 216 transitions, 2772 flow [2024-06-27 22:14:21,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2772, PETRI_PLACES=131, PETRI_TRANSITIONS=216} [2024-06-27 22:14:21,989 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 91 predicate places. [2024-06-27 22:14:21,989 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 216 transitions, 2772 flow [2024-06-27 22:14:21,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:21,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:21,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:21,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:14:21,990 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:21,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:21,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1546108486, now seen corresponding path program 1 times [2024-06-27 22:14:21,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:21,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881602353] [2024-06-27 22:14:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:21,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:22,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881602353] [2024-06-27 22:14:22,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881602353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:22,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:22,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:22,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357333570] [2024-06-27 22:14:22,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:22,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:23,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:23,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:23,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:23,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:23,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 216 transitions, 2772 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:23,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:23,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:23,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:23,604 INFO L124 PetriNetUnfolderBase]: 911/1608 cut-off events. [2024-06-27 22:14:23,604 INFO L125 PetriNetUnfolderBase]: For 21428/21428 co-relation queries the response was YES. [2024-06-27 22:14:23,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10009 conditions, 1608 events. 911/1608 cut-off events. For 21428/21428 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8330 event pairs, 195 based on Foata normal form. 2/1560 useless extension candidates. Maximal degree in co-relation 9948. Up to 1267 conditions per place. [2024-06-27 22:14:23,614 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 177 selfloop transitions, 73 changer transitions 0/256 dead transitions. [2024-06-27 22:14:23,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 256 transitions, 3514 flow [2024-06-27 22:14:23,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:14:23,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:14:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:14:23,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-27 22:14:23,615 INFO L175 Difference]: Start difference. First operand has 131 places, 216 transitions, 2772 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:14:23,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 256 transitions, 3514 flow [2024-06-27 22:14:23,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 256 transitions, 3359 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 22:14:23,651 INFO L231 Difference]: Finished difference. Result has 138 places, 223 transitions, 2940 flow [2024-06-27 22:14:23,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2617, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2940, PETRI_PLACES=138, PETRI_TRANSITIONS=223} [2024-06-27 22:14:23,651 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 98 predicate places. [2024-06-27 22:14:23,651 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 223 transitions, 2940 flow [2024-06-27 22:14:23,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:23,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:23,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:23,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:14:23,652 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:23,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:23,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1546114252, now seen corresponding path program 2 times [2024-06-27 22:14:23,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:23,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002389333] [2024-06-27 22:14:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:23,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:24,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:24,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002389333] [2024-06-27 22:14:24,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002389333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:24,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:24,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:24,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956437487] [2024-06-27 22:14:24,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:24,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:24,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:24,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:24,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:24,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:24,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 223 transitions, 2940 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:24,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:24,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:24,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:24,873 INFO L124 PetriNetUnfolderBase]: 923/1625 cut-off events. [2024-06-27 22:14:24,873 INFO L125 PetriNetUnfolderBase]: For 23575/23575 co-relation queries the response was YES. [2024-06-27 22:14:24,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10545 conditions, 1625 events. 923/1625 cut-off events. For 23575/23575 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8454 event pairs, 202 based on Foata normal form. 1/1582 useless extension candidates. Maximal degree in co-relation 10481. Up to 1333 conditions per place. [2024-06-27 22:14:24,884 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 167 selfloop transitions, 76 changer transitions 0/249 dead transitions. [2024-06-27 22:14:24,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 249 transitions, 3604 flow [2024-06-27 22:14:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:24,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:24,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 22:14:24,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-27 22:14:24,886 INFO L175 Difference]: Start difference. First operand has 138 places, 223 transitions, 2940 flow. Second operand 8 states and 137 transitions. [2024-06-27 22:14:24,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 249 transitions, 3604 flow [2024-06-27 22:14:24,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 249 transitions, 3512 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 22:14:24,927 INFO L231 Difference]: Finished difference. Result has 142 places, 228 transitions, 3130 flow [2024-06-27 22:14:24,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3130, PETRI_PLACES=142, PETRI_TRANSITIONS=228} [2024-06-27 22:14:24,928 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 102 predicate places. [2024-06-27 22:14:24,928 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 228 transitions, 3130 flow [2024-06-27 22:14:24,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:24,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:24,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:24,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:14:24,929 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:24,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:24,929 INFO L85 PathProgramCache]: Analyzing trace with hash -409162166, now seen corresponding path program 3 times [2024-06-27 22:14:24,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:24,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030598413] [2024-06-27 22:14:24,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:24,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:25,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:25,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030598413] [2024-06-27 22:14:25,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030598413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:25,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:25,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:25,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958243703] [2024-06-27 22:14:25,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:25,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:25,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:25,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 228 transitions, 3130 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:25,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:25,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:25,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:26,273 INFO L124 PetriNetUnfolderBase]: 963/1681 cut-off events. [2024-06-27 22:14:26,274 INFO L125 PetriNetUnfolderBase]: For 26595/26595 co-relation queries the response was YES. [2024-06-27 22:14:26,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11351 conditions, 1681 events. 963/1681 cut-off events. For 26595/26595 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8702 event pairs, 223 based on Foata normal form. 1/1639 useless extension candidates. Maximal degree in co-relation 11285. Up to 1367 conditions per place. [2024-06-27 22:14:26,286 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 187 selfloop transitions, 77 changer transitions 0/270 dead transitions. [2024-06-27 22:14:26,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 270 transitions, 4104 flow [2024-06-27 22:14:26,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:26,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:14:26,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 22:14:26,287 INFO L175 Difference]: Start difference. First operand has 142 places, 228 transitions, 3130 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:14:26,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 270 transitions, 4104 flow [2024-06-27 22:14:26,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 270 transitions, 3895 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 22:14:26,332 INFO L231 Difference]: Finished difference. Result has 144 places, 245 transitions, 3467 flow [2024-06-27 22:14:26,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3467, PETRI_PLACES=144, PETRI_TRANSITIONS=245} [2024-06-27 22:14:26,333 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 104 predicate places. [2024-06-27 22:14:26,333 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 245 transitions, 3467 flow [2024-06-27 22:14:26,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:26,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:26,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:26,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:14:26,334 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:26,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:26,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1791078372, now seen corresponding path program 2 times [2024-06-27 22:14:26,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:26,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014264963] [2024-06-27 22:14:26,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:26,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:27,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:27,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014264963] [2024-06-27 22:14:27,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014264963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:27,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:27,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:27,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148106426] [2024-06-27 22:14:27,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:27,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:27,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:27,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:27,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:27,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:27,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 245 transitions, 3467 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:27,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:27,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:27,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:27,771 INFO L124 PetriNetUnfolderBase]: 1030/1797 cut-off events. [2024-06-27 22:14:27,771 INFO L125 PetriNetUnfolderBase]: For 29379/29379 co-relation queries the response was YES. [2024-06-27 22:14:27,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12147 conditions, 1797 events. 1030/1797 cut-off events. For 29379/29379 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9436 event pairs, 224 based on Foata normal form. 2/1752 useless extension candidates. Maximal degree in co-relation 12080. Up to 1401 conditions per place. [2024-06-27 22:14:27,781 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 212 selfloop transitions, 79 changer transitions 2/299 dead transitions. [2024-06-27 22:14:27,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 299 transitions, 4398 flow [2024-06-27 22:14:27,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:14:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:14:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:14:27,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-06-27 22:14:27,783 INFO L175 Difference]: Start difference. First operand has 144 places, 245 transitions, 3467 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:14:27,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 299 transitions, 4398 flow [2024-06-27 22:14:27,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 299 transitions, 4272 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 22:14:27,830 INFO L231 Difference]: Finished difference. Result has 152 places, 259 transitions, 3752 flow [2024-06-27 22:14:27,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3341, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3752, PETRI_PLACES=152, PETRI_TRANSITIONS=259} [2024-06-27 22:14:27,831 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 112 predicate places. [2024-06-27 22:14:27,831 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 259 transitions, 3752 flow [2024-06-27 22:14:27,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:27,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:27,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:27,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:14:27,832 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:27,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:27,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1794826272, now seen corresponding path program 3 times [2024-06-27 22:14:27,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:27,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576290590] [2024-06-27 22:14:27,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:27,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:28,676 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 22:14:28,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:28,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576290590] [2024-06-27 22:14:28,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576290590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:28,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:28,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:28,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143545599] [2024-06-27 22:14:28,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:28,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:28,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:28,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:28,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:28,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:28,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 259 transitions, 3752 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:28,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:28,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:28,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:29,251 INFO L124 PetriNetUnfolderBase]: 1104/1914 cut-off events. [2024-06-27 22:14:29,252 INFO L125 PetriNetUnfolderBase]: For 34257/34257 co-relation queries the response was YES. [2024-06-27 22:14:29,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13633 conditions, 1914 events. 1104/1914 cut-off events. For 34257/34257 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10134 event pairs, 223 based on Foata normal form. 2/1867 useless extension candidates. Maximal degree in co-relation 13562. Up to 1437 conditions per place. [2024-06-27 22:14:29,265 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 203 selfloop transitions, 115 changer transitions 3/327 dead transitions. [2024-06-27 22:14:29,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 327 transitions, 5089 flow [2024-06-27 22:14:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:14:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:14:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:14:29,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-06-27 22:14:29,267 INFO L175 Difference]: Start difference. First operand has 152 places, 259 transitions, 3752 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:14:29,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 327 transitions, 5089 flow [2024-06-27 22:14:29,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 327 transitions, 4985 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 22:14:29,330 INFO L231 Difference]: Finished difference. Result has 160 places, 287 transitions, 4515 flow [2024-06-27 22:14:29,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3648, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4515, PETRI_PLACES=160, PETRI_TRANSITIONS=287} [2024-06-27 22:14:29,331 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 120 predicate places. [2024-06-27 22:14:29,331 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 287 transitions, 4515 flow [2024-06-27 22:14:29,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:29,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:29,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:29,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:14:29,332 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:29,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:29,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2099588016, now seen corresponding path program 4 times [2024-06-27 22:14:29,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:29,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106617064] [2024-06-27 22:14:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:29,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:30,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:30,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106617064] [2024-06-27 22:14:30,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106617064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:30,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:30,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:30,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14767049] [2024-06-27 22:14:30,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:30,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:30,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:30,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:30,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:30,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:30,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 287 transitions, 4515 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:30,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:30,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:30,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:30,650 INFO L124 PetriNetUnfolderBase]: 1110/1923 cut-off events. [2024-06-27 22:14:30,650 INFO L125 PetriNetUnfolderBase]: For 38630/38630 co-relation queries the response was YES. [2024-06-27 22:14:30,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14430 conditions, 1923 events. 1110/1923 cut-off events. For 38630/38630 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10239 event pairs, 242 based on Foata normal form. 1/1875 useless extension candidates. Maximal degree in co-relation 14356. Up to 1518 conditions per place. [2024-06-27 22:14:30,663 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 189 selfloop transitions, 127 changer transitions 0/322 dead transitions. [2024-06-27 22:14:30,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 322 transitions, 5572 flow [2024-06-27 22:14:30,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:30,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 22:14:30,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 22:14:30,664 INFO L175 Difference]: Start difference. First operand has 160 places, 287 transitions, 4515 flow. Second operand 8 states and 140 transitions. [2024-06-27 22:14:30,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 322 transitions, 5572 flow [2024-06-27 22:14:30,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 322 transitions, 5307 flow, removed 103 selfloop flow, removed 4 redundant places. [2024-06-27 22:14:30,747 INFO L231 Difference]: Finished difference. Result has 164 places, 300 transitions, 4869 flow [2024-06-27 22:14:30,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4298, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4869, PETRI_PLACES=164, PETRI_TRANSITIONS=300} [2024-06-27 22:14:30,748 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 124 predicate places. [2024-06-27 22:14:30,748 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 300 transitions, 4869 flow [2024-06-27 22:14:30,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:30,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:30,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:30,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:14:30,749 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:30,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:30,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2099594960, now seen corresponding path program 1 times [2024-06-27 22:14:30,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:30,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48317573] [2024-06-27 22:14:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:30,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:30,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:31,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:31,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48317573] [2024-06-27 22:14:31,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48317573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:31,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:31,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:31,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752199923] [2024-06-27 22:14:31,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:31,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:31,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:31,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:31,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:14:31,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 300 transitions, 4869 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:31,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:31,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:14:31,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:32,264 INFO L124 PetriNetUnfolderBase]: 1063/1878 cut-off events. [2024-06-27 22:14:32,265 INFO L125 PetriNetUnfolderBase]: For 39369/39369 co-relation queries the response was YES. [2024-06-27 22:14:32,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13968 conditions, 1878 events. 1063/1878 cut-off events. For 39369/39369 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10375 event pairs, 281 based on Foata normal form. 2/1825 useless extension candidates. Maximal degree in co-relation 13892. Up to 1613 conditions per place. [2024-06-27 22:14:32,279 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 272 selfloop transitions, 36 changer transitions 0/320 dead transitions. [2024-06-27 22:14:32,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 320 transitions, 5637 flow [2024-06-27 22:14:32,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 22:14:32,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-06-27 22:14:32,280 INFO L175 Difference]: Start difference. First operand has 164 places, 300 transitions, 4869 flow. Second operand 7 states and 123 transitions. [2024-06-27 22:14:32,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 320 transitions, 5637 flow [2024-06-27 22:14:32,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 320 transitions, 5478 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-27 22:14:32,355 INFO L231 Difference]: Finished difference. Result has 167 places, 303 transitions, 4850 flow [2024-06-27 22:14:32,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4710, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4850, PETRI_PLACES=167, PETRI_TRANSITIONS=303} [2024-06-27 22:14:32,360 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 127 predicate places. [2024-06-27 22:14:32,360 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 303 transitions, 4850 flow [2024-06-27 22:14:32,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:32,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:32,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:32,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:14:32,361 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:32,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:32,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1794832782, now seen corresponding path program 4 times [2024-06-27 22:14:32,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:32,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413959248] [2024-06-27 22:14:32,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:32,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:33,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:33,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413959248] [2024-06-27 22:14:33,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413959248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:33,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:33,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:33,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175212602] [2024-06-27 22:14:33,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:33,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:33,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:33,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:33,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:33,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 303 transitions, 4850 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:33,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:33,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:33,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:33,981 INFO L124 PetriNetUnfolderBase]: 1154/1997 cut-off events. [2024-06-27 22:14:33,982 INFO L125 PetriNetUnfolderBase]: For 41320/41320 co-relation queries the response was YES. [2024-06-27 22:14:33,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15238 conditions, 1997 events. 1154/1997 cut-off events. For 41320/41320 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10773 event pairs, 307 based on Foata normal form. 1/1950 useless extension candidates. Maximal degree in co-relation 15161. Up to 1763 conditions per place. [2024-06-27 22:14:33,997 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 292 selfloop transitions, 37 changer transitions 0/335 dead transitions. [2024-06-27 22:14:33,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 335 transitions, 5862 flow [2024-06-27 22:14:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:14:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:14:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 22:14:34,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-27 22:14:34,015 INFO L175 Difference]: Start difference. First operand has 167 places, 303 transitions, 4850 flow. Second operand 9 states and 147 transitions. [2024-06-27 22:14:34,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 335 transitions, 5862 flow [2024-06-27 22:14:34,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 335 transitions, 5748 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 22:14:34,098 INFO L231 Difference]: Finished difference. Result has 172 places, 310 transitions, 5001 flow [2024-06-27 22:14:34,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4736, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5001, PETRI_PLACES=172, PETRI_TRANSITIONS=310} [2024-06-27 22:14:34,098 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 132 predicate places. [2024-06-27 22:14:34,099 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 310 transitions, 5001 flow [2024-06-27 22:14:34,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:34,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:34,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:34,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:14:34,099 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:34,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:34,100 INFO L85 PathProgramCache]: Analyzing trace with hash 645264966, now seen corresponding path program 5 times [2024-06-27 22:14:34,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:34,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281749572] [2024-06-27 22:14:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:34,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:34,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:34,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281749572] [2024-06-27 22:14:34,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281749572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:34,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:34,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:34,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022425734] [2024-06-27 22:14:34,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:34,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:34,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:34,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:34,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:34,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:34,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 310 transitions, 5001 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:34,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:34,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:34,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:35,438 INFO L124 PetriNetUnfolderBase]: 1166/2007 cut-off events. [2024-06-27 22:14:35,438 INFO L125 PetriNetUnfolderBase]: For 43494/43494 co-relation queries the response was YES. [2024-06-27 22:14:35,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15641 conditions, 2007 events. 1166/2007 cut-off events. For 43494/43494 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10745 event pairs, 210 based on Foata normal form. 1/1956 useless extension candidates. Maximal degree in co-relation 15561. Up to 1677 conditions per place. [2024-06-27 22:14:35,463 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 249 selfloop transitions, 82 changer transitions 0/337 dead transitions. [2024-06-27 22:14:35,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 337 transitions, 5937 flow [2024-06-27 22:14:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:35,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 22:14:35,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 22:14:35,464 INFO L175 Difference]: Start difference. First operand has 172 places, 310 transitions, 5001 flow. Second operand 8 states and 133 transitions. [2024-06-27 22:14:35,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 337 transitions, 5937 flow [2024-06-27 22:14:35,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 337 transitions, 5802 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 22:14:35,562 INFO L231 Difference]: Finished difference. Result has 175 places, 318 transitions, 5248 flow [2024-06-27 22:14:35,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4866, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5248, PETRI_PLACES=175, PETRI_TRANSITIONS=318} [2024-06-27 22:14:35,571 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 135 predicate places. [2024-06-27 22:14:35,572 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 318 transitions, 5248 flow [2024-06-27 22:14:35,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:35,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:35,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:35,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:14:35,572 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:35,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:35,573 INFO L85 PathProgramCache]: Analyzing trace with hash 645356292, now seen corresponding path program 5 times [2024-06-27 22:14:35,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:35,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836082126] [2024-06-27 22:14:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:36,551 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 22:14:36,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:36,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836082126] [2024-06-27 22:14:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836082126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:36,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:36,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:36,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540722036] [2024-06-27 22:14:36,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:36,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:36,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:36,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:36,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:36,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:36,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 318 transitions, 5248 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:36,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:36,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:36,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:37,253 INFO L124 PetriNetUnfolderBase]: 1260/2165 cut-off events. [2024-06-27 22:14:37,253 INFO L125 PetriNetUnfolderBase]: For 48997/48997 co-relation queries the response was YES. [2024-06-27 22:14:37,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17030 conditions, 2165 events. 1260/2165 cut-off events. For 48997/48997 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11770 event pairs, 196 based on Foata normal form. 2/2111 useless extension candidates. Maximal degree in co-relation 16948. Up to 1715 conditions per place. [2024-06-27 22:14:37,273 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 275 selfloop transitions, 87 changer transitions 2/370 dead transitions. [2024-06-27 22:14:37,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 370 transitions, 6446 flow [2024-06-27 22:14:37,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:37,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:37,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:14:37,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243055555555556 [2024-06-27 22:14:37,276 INFO L175 Difference]: Start difference. First operand has 175 places, 318 transitions, 5248 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:14:37,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 370 transitions, 6446 flow [2024-06-27 22:14:37,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 370 transitions, 6337 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 22:14:37,403 INFO L231 Difference]: Finished difference. Result has 183 places, 337 transitions, 5701 flow [2024-06-27 22:14:37,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5139, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5701, PETRI_PLACES=183, PETRI_TRANSITIONS=337} [2024-06-27 22:14:37,404 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 143 predicate places. [2024-06-27 22:14:37,404 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 337 transitions, 5701 flow [2024-06-27 22:14:37,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:37,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:37,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:37,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:14:37,405 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:37,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:37,405 INFO L85 PathProgramCache]: Analyzing trace with hash 649110702, now seen corresponding path program 6 times [2024-06-27 22:14:37,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:37,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611984570] [2024-06-27 22:14:37,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:37,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:38,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:38,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:38,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611984570] [2024-06-27 22:14:38,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611984570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:38,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:38,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:38,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089581128] [2024-06-27 22:14:38,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:38,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:38,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:38,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:38,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:38,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:38,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 337 transitions, 5701 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:38,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:38,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:38,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:39,042 INFO L124 PetriNetUnfolderBase]: 1298/2230 cut-off events. [2024-06-27 22:14:39,043 INFO L125 PetriNetUnfolderBase]: For 56225/56225 co-relation queries the response was YES. [2024-06-27 22:14:39,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18265 conditions, 2230 events. 1298/2230 cut-off events. For 56225/56225 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12280 event pairs, 311 based on Foata normal form. 1/2178 useless extension candidates. Maximal degree in co-relation 18178. Up to 1976 conditions per place. [2024-06-27 22:14:39,061 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 322 selfloop transitions, 43 changer transitions 0/371 dead transitions. [2024-06-27 22:14:39,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 371 transitions, 6888 flow [2024-06-27 22:14:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:39,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 22:14:39,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 22:14:39,063 INFO L175 Difference]: Start difference. First operand has 183 places, 337 transitions, 5701 flow. Second operand 8 states and 133 transitions. [2024-06-27 22:14:39,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 371 transitions, 6888 flow [2024-06-27 22:14:39,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 371 transitions, 6763 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-27 22:14:39,187 INFO L231 Difference]: Finished difference. Result has 190 places, 351 transitions, 5983 flow [2024-06-27 22:14:39,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5576, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5983, PETRI_PLACES=190, PETRI_TRANSITIONS=351} [2024-06-27 22:14:39,188 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 150 predicate places. [2024-06-27 22:14:39,188 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 351 transitions, 5983 flow [2024-06-27 22:14:39,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:39,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:39,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:39,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:14:39,189 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:39,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:39,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1086213026, now seen corresponding path program 6 times [2024-06-27 22:14:39,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:39,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466246534] [2024-06-27 22:14:39,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:39,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:40,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:40,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466246534] [2024-06-27 22:14:40,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466246534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:40,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:40,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:40,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038316650] [2024-06-27 22:14:40,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:40,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:40,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:40,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:40,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:40,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 351 transitions, 5983 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:40,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:40,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:40,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:40,652 INFO L124 PetriNetUnfolderBase]: 1302/2228 cut-off events. [2024-06-27 22:14:40,652 INFO L125 PetriNetUnfolderBase]: For 58958/58958 co-relation queries the response was YES. [2024-06-27 22:14:40,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18423 conditions, 2228 events. 1302/2228 cut-off events. For 58958/58958 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12184 event pairs, 229 based on Foata normal form. 1/2173 useless extension candidates. Maximal degree in co-relation 18333. Up to 1850 conditions per place. [2024-06-27 22:14:40,680 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 271 selfloop transitions, 104 changer transitions 0/381 dead transitions. [2024-06-27 22:14:40,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 381 transitions, 7064 flow [2024-06-27 22:14:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:40,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 22:14:40,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 22:14:40,682 INFO L175 Difference]: Start difference. First operand has 190 places, 351 transitions, 5983 flow. Second operand 8 states and 135 transitions. [2024-06-27 22:14:40,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 381 transitions, 7064 flow [2024-06-27 22:14:40,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 381 transitions, 6871 flow, removed 88 selfloop flow, removed 2 redundant places. [2024-06-27 22:14:40,834 INFO L231 Difference]: Finished difference. Result has 197 places, 361 transitions, 6291 flow [2024-06-27 22:14:40,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5822, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6291, PETRI_PLACES=197, PETRI_TRANSITIONS=361} [2024-06-27 22:14:40,835 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 157 predicate places. [2024-06-27 22:14:40,835 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 361 transitions, 6291 flow [2024-06-27 22:14:40,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:40,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:40,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:40,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:14:40,835 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:40,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:40,836 INFO L85 PathProgramCache]: Analyzing trace with hash 609717552, now seen corresponding path program 7 times [2024-06-27 22:14:40,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:40,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264184923] [2024-06-27 22:14:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:40,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:41,726 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 22:14:41,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:41,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264184923] [2024-06-27 22:14:41,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264184923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:41,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:41,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:41,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400747546] [2024-06-27 22:14:41,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:41,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:41,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:41,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:41,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:41,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:41,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 361 transitions, 6291 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:41,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:41,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:41,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:42,417 INFO L124 PetriNetUnfolderBase]: 1404/2387 cut-off events. [2024-06-27 22:14:42,418 INFO L125 PetriNetUnfolderBase]: For 66740/66740 co-relation queries the response was YES. [2024-06-27 22:14:42,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20136 conditions, 2387 events. 1404/2387 cut-off events. For 66740/66740 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 13140 event pairs, 201 based on Foata normal form. 2/2333 useless extension candidates. Maximal degree in co-relation 20042. Up to 1863 conditions per place. [2024-06-27 22:14:42,441 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 294 selfloop transitions, 115 changer transitions 3/418 dead transitions. [2024-06-27 22:14:42,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 418 transitions, 7771 flow [2024-06-27 22:14:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:42,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 22:14:42,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 22:14:42,443 INFO L175 Difference]: Start difference. First operand has 197 places, 361 transitions, 6291 flow. Second operand 8 states and 152 transitions. [2024-06-27 22:14:42,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 418 transitions, 7771 flow [2024-06-27 22:14:42,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 418 transitions, 7656 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 22:14:42,627 INFO L231 Difference]: Finished difference. Result has 203 places, 385 transitions, 6978 flow [2024-06-27 22:14:42,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6176, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6978, PETRI_PLACES=203, PETRI_TRANSITIONS=385} [2024-06-27 22:14:42,628 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 163 predicate places. [2024-06-27 22:14:42,628 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 385 transitions, 6978 flow [2024-06-27 22:14:42,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:42,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:42,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:42,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:14:42,629 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:42,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:42,629 INFO L85 PathProgramCache]: Analyzing trace with hash 138496344, now seen corresponding path program 8 times [2024-06-27 22:14:42,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:42,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290188002] [2024-06-27 22:14:42,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:42,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:43,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:43,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:43,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290188002] [2024-06-27 22:14:43,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290188002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:43,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:43,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:43,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280552911] [2024-06-27 22:14:43,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:43,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:43,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:43,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:43,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:43,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:43,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 385 transitions, 6978 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:43,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:43,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:43,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:44,304 INFO L124 PetriNetUnfolderBase]: 1455/2466 cut-off events. [2024-06-27 22:14:44,305 INFO L125 PetriNetUnfolderBase]: For 77370/77370 co-relation queries the response was YES. [2024-06-27 22:14:44,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22068 conditions, 2466 events. 1455/2466 cut-off events. For 77370/77370 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13665 event pairs, 211 based on Foata normal form. 2/2412 useless extension candidates. Maximal degree in co-relation 21970. Up to 1841 conditions per place. [2024-06-27 22:14:44,325 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 260 selfloop transitions, 163 changer transitions 4/433 dead transitions. [2024-06-27 22:14:44,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 433 transitions, 8384 flow [2024-06-27 22:14:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:14:44,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:14:44,331 INFO L175 Difference]: Start difference. First operand has 203 places, 385 transitions, 6978 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:14:44,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 433 transitions, 8384 flow [2024-06-27 22:14:44,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 433 transitions, 8171 flow, removed 78 selfloop flow, removed 3 redundant places. [2024-06-27 22:14:44,523 INFO L231 Difference]: Finished difference. Result has 211 places, 403 transitions, 7638 flow [2024-06-27 22:14:44,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6765, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7638, PETRI_PLACES=211, PETRI_TRANSITIONS=403} [2024-06-27 22:14:44,524 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 171 predicate places. [2024-06-27 22:14:44,524 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 403 transitions, 7638 flow [2024-06-27 22:14:44,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:44,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:44,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:44,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:14:44,525 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:44,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:44,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1651573504, now seen corresponding path program 7 times [2024-06-27 22:14:44,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:44,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440136524] [2024-06-27 22:14:44,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:44,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:45,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:45,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440136524] [2024-06-27 22:14:45,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440136524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:45,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:45,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:45,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784168464] [2024-06-27 22:14:45,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:45,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:45,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:45,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:45,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:45,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:45,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 403 transitions, 7638 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:45,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:45,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:45,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:46,072 INFO L124 PetriNetUnfolderBase]: 1455/2467 cut-off events. [2024-06-27 22:14:46,072 INFO L125 PetriNetUnfolderBase]: For 80871/80871 co-relation queries the response was YES. [2024-06-27 22:14:46,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22883 conditions, 2467 events. 1455/2467 cut-off events. For 80871/80871 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13707 event pairs, 279 based on Foata normal form. 1/2411 useless extension candidates. Maximal degree in co-relation 22780. Up to 1967 conditions per place. [2024-06-27 22:14:46,097 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 254 selfloop transitions, 164 changer transitions 0/424 dead transitions. [2024-06-27 22:14:46,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 424 transitions, 8682 flow [2024-06-27 22:14:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:46,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 22:14:46,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 22:14:46,099 INFO L175 Difference]: Start difference. First operand has 211 places, 403 transitions, 7638 flow. Second operand 8 states and 133 transitions. [2024-06-27 22:14:46,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 424 transitions, 8682 flow [2024-06-27 22:14:46,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 424 transitions, 8365 flow, removed 133 selfloop flow, removed 2 redundant places. [2024-06-27 22:14:46,319 INFO L231 Difference]: Finished difference. Result has 217 places, 407 transitions, 7759 flow [2024-06-27 22:14:46,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7339, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7759, PETRI_PLACES=217, PETRI_TRANSITIONS=407} [2024-06-27 22:14:46,320 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 177 predicate places. [2024-06-27 22:14:46,320 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 407 transitions, 7759 flow [2024-06-27 22:14:46,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:46,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:46,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:46,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:14:46,321 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:46,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:46,321 INFO L85 PathProgramCache]: Analyzing trace with hash 147073982, now seen corresponding path program 2 times [2024-06-27 22:14:46,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:46,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565598773] [2024-06-27 22:14:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:46,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:47,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:47,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:47,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565598773] [2024-06-27 22:14:47,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565598773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:47,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:47,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:47,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719322920] [2024-06-27 22:14:47,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:47,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:47,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:47,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:47,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:47,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:47,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 407 transitions, 7759 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:47,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:47,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:47,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:48,255 INFO L124 PetriNetUnfolderBase]: 1475/2504 cut-off events. [2024-06-27 22:14:48,255 INFO L125 PetriNetUnfolderBase]: For 83631/83631 co-relation queries the response was YES. [2024-06-27 22:14:48,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23169 conditions, 2504 events. 1475/2504 cut-off events. For 83631/83631 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14024 event pairs, 409 based on Foata normal form. 2/2454 useless extension candidates. Maximal degree in co-relation 23064. Up to 2265 conditions per place. [2024-06-27 22:14:48,283 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 407 selfloop transitions, 19 changer transitions 0/432 dead transitions. [2024-06-27 22:14:48,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 432 transitions, 8881 flow [2024-06-27 22:14:48,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:48,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 22:14:48,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2024-06-27 22:14:48,286 INFO L175 Difference]: Start difference. First operand has 217 places, 407 transitions, 7759 flow. Second operand 8 states and 130 transitions. [2024-06-27 22:14:48,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 432 transitions, 8881 flow [2024-06-27 22:14:48,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 432 transitions, 8641 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-27 22:14:48,494 INFO L231 Difference]: Finished difference. Result has 221 places, 410 transitions, 7643 flow [2024-06-27 22:14:48,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7519, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7643, PETRI_PLACES=221, PETRI_TRANSITIONS=410} [2024-06-27 22:14:48,495 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 181 predicate places. [2024-06-27 22:14:48,495 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 410 transitions, 7643 flow [2024-06-27 22:14:48,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:48,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:48,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:48,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:14:48,496 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:48,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash 138503102, now seen corresponding path program 3 times [2024-06-27 22:14:48,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:48,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130744242] [2024-06-27 22:14:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:48,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:49,513 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 22:14:49,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:49,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130744242] [2024-06-27 22:14:49,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130744242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:49,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:49,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:49,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006456112] [2024-06-27 22:14:49,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:49,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:49,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:49,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:49,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:49,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:14:49,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 410 transitions, 7643 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:49,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:49,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:14:49,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:50,284 INFO L124 PetriNetUnfolderBase]: 1382/2382 cut-off events. [2024-06-27 22:14:50,284 INFO L125 PetriNetUnfolderBase]: For 82674/82674 co-relation queries the response was YES. [2024-06-27 22:14:50,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21940 conditions, 2382 events. 1382/2382 cut-off events. For 82674/82674 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13645 event pairs, 338 based on Foata normal form. 2/2321 useless extension candidates. Maximal degree in co-relation 21834. Up to 2115 conditions per place. [2024-06-27 22:14:50,310 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 379 selfloop transitions, 36 changer transitions 0/427 dead transitions. [2024-06-27 22:14:50,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 427 transitions, 8623 flow [2024-06-27 22:14:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-27 22:14:50,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-27 22:14:50,312 INFO L175 Difference]: Start difference. First operand has 221 places, 410 transitions, 7643 flow. Second operand 7 states and 122 transitions. [2024-06-27 22:14:50,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 427 transitions, 8623 flow [2024-06-27 22:14:50,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 427 transitions, 8525 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 22:14:50,505 INFO L231 Difference]: Finished difference. Result has 222 places, 413 transitions, 7710 flow [2024-06-27 22:14:50,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7545, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7710, PETRI_PLACES=222, PETRI_TRANSITIONS=413} [2024-06-27 22:14:50,506 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 182 predicate places. [2024-06-27 22:14:50,506 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 413 transitions, 7710 flow [2024-06-27 22:14:50,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:50,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:50,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:50,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:14:50,506 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:50,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:50,507 INFO L85 PathProgramCache]: Analyzing trace with hash 138502854, now seen corresponding path program 9 times [2024-06-27 22:14:50,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:50,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605683158] [2024-06-27 22:14:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:50,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:51,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:51,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605683158] [2024-06-27 22:14:51,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605683158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:51,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:51,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:51,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517741028] [2024-06-27 22:14:51,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:51,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:51,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:51,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:51,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:51,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:51,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 413 transitions, 7710 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:51,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:51,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:51,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:52,082 INFO L124 PetriNetUnfolderBase]: 1519/2571 cut-off events. [2024-06-27 22:14:52,082 INFO L125 PetriNetUnfolderBase]: For 89696/89696 co-relation queries the response was YES. [2024-06-27 22:14:52,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23940 conditions, 2571 events. 1519/2571 cut-off events. For 89696/89696 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 14404 event pairs, 359 based on Foata normal form. 1/2518 useless extension candidates. Maximal degree in co-relation 23834. Up to 2310 conditions per place. [2024-06-27 22:14:52,110 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 391 selfloop transitions, 43 changer transitions 0/440 dead transitions. [2024-06-27 22:14:52,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 440 transitions, 9040 flow [2024-06-27 22:14:52,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:52,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 22:14:52,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 22:14:52,128 INFO L175 Difference]: Start difference. First operand has 222 places, 413 transitions, 7710 flow. Second operand 8 states and 133 transitions. [2024-06-27 22:14:52,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 440 transitions, 9040 flow [2024-06-27 22:14:52,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 440 transitions, 8867 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 22:14:52,383 INFO L231 Difference]: Finished difference. Result has 226 places, 420 transitions, 7892 flow [2024-06-27 22:14:52,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7537, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7892, PETRI_PLACES=226, PETRI_TRANSITIONS=420} [2024-06-27 22:14:52,384 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 186 predicate places. [2024-06-27 22:14:52,384 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 420 transitions, 7892 flow [2024-06-27 22:14:52,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:52,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:52,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:52,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:14:52,385 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:52,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:52,385 INFO L85 PathProgramCache]: Analyzing trace with hash 146777064, now seen corresponding path program 10 times [2024-06-27 22:14:52,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:52,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833868136] [2024-06-27 22:14:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:52,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:53,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:53,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833868136] [2024-06-27 22:14:53,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833868136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:53,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:53,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:53,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360989934] [2024-06-27 22:14:53,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:53,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:53,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:53,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:53,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:53,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:53,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 420 transitions, 7892 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:53,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:53,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:53,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:54,127 INFO L124 PetriNetUnfolderBase]: 1533/2592 cut-off events. [2024-06-27 22:14:54,128 INFO L125 PetriNetUnfolderBase]: For 95532/95532 co-relation queries the response was YES. [2024-06-27 22:14:54,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24459 conditions, 2592 events. 1533/2592 cut-off events. For 95532/95532 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 14549 event pairs, 344 based on Foata normal form. 1/2539 useless extension candidates. Maximal degree in co-relation 24350. Up to 2223 conditions per place. [2024-06-27 22:14:54,157 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 372 selfloop transitions, 72 changer transitions 0/450 dead transitions. [2024-06-27 22:14:54,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 450 transitions, 9424 flow [2024-06-27 22:14:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:14:54,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:14:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 22:14:54,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 22:14:54,159 INFO L175 Difference]: Start difference. First operand has 226 places, 420 transitions, 7892 flow. Second operand 8 states and 138 transitions. [2024-06-27 22:14:54,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 450 transitions, 9424 flow [2024-06-27 22:14:54,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 450 transitions, 9221 flow, removed 82 selfloop flow, removed 4 redundant places. [2024-06-27 22:14:54,402 INFO L231 Difference]: Finished difference. Result has 231 places, 427 transitions, 8113 flow [2024-06-27 22:14:54,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7689, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8113, PETRI_PLACES=231, PETRI_TRANSITIONS=427} [2024-06-27 22:14:54,403 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 191 predicate places. [2024-06-27 22:14:54,403 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 427 transitions, 8113 flow [2024-06-27 22:14:54,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 22:14:54,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:54,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:54,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:14:54,404 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:54,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:54,404 INFO L85 PathProgramCache]: Analyzing trace with hash 146777312, now seen corresponding path program 4 times [2024-06-27 22:14:54,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:54,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772851502] [2024-06-27 22:14:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:54,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:14:55,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:55,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772851502] [2024-06-27 22:14:55,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772851502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:55,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:55,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:14:55,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97509061] [2024-06-27 22:14:55,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:55,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:14:55,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:14:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:14:55,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:14:55,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 427 transitions, 8113 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 22:14:55,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:55,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:14:55,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:56,001 INFO L124 PetriNetUnfolderBase]: 1497/2568 cut-off events. [2024-06-27 22:14:56,001 INFO L125 PetriNetUnfolderBase]: For 104326/104326 co-relation queries the response was YES. [2024-06-27 22:14:56,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24648 conditions, 2568 events. 1497/2568 cut-off events. For 104326/104326 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 14890 event pairs, 313 based on Foata normal form. 2/2505 useless extension candidates. Maximal degree in co-relation 24537. Up to 2105 conditions per place. [2024-06-27 22:14:56,027 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 389 selfloop transitions, 70 changer transitions 4/476 dead transitions. [2024-06-27 22:14:56,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 476 transitions, 9815 flow [2024-06-27 22:14:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:14:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:14:56,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-27 22:14:56,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5674603174603174 [2024-06-27 22:14:56,029 INFO L175 Difference]: Start difference. First operand has 231 places, 427 transitions, 8113 flow. Second operand 7 states and 143 transitions. [2024-06-27 22:14:56,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 476 transitions, 9815 flow [2024-06-27 22:14:56,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 476 transitions, 9462 flow, removed 110 selfloop flow, removed 6 redundant places. [2024-06-27 22:14:56,287 INFO L231 Difference]: Finished difference. Result has 235 places, 444 transitions, 8477 flow [2024-06-27 22:14:56,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7790, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8477, PETRI_PLACES=235, PETRI_TRANSITIONS=444} [2024-06-27 22:14:56,287 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 195 predicate places. [2024-06-27 22:14:56,287 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 444 transitions, 8477 flow [2024-06-27 22:14:56,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 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 22:14:56,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:56,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:56,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:14:56,288 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:56,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:56,288 INFO L85 PathProgramCache]: Analyzing trace with hash 147084894, now seen corresponding path program 1 times [2024-06-27 22:14:56,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:56,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798526271] [2024-06-27 22:14:56,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:56,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:57,915 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 22:14:57,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:57,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798526271] [2024-06-27 22:14:57,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798526271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:57,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:57,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:14:57,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448069770] [2024-06-27 22:14:57,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:57,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:14:57,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:57,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:14:57,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:14:58,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:14:58,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 444 transitions, 8477 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:58,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:58,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:14:58,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:14:59,015 INFO L124 PetriNetUnfolderBase]: 1616/2731 cut-off events. [2024-06-27 22:14:59,016 INFO L125 PetriNetUnfolderBase]: For 105178/105178 co-relation queries the response was YES. [2024-06-27 22:14:59,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26129 conditions, 2731 events. 1616/2731 cut-off events. For 105178/105178 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 15518 event pairs, 429 based on Foata normal form. 2/2678 useless extension candidates. Maximal degree in co-relation 26015. Up to 2488 conditions per place. [2024-06-27 22:14:59,040 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 447 selfloop transitions, 21 changer transitions 0/474 dead transitions. [2024-06-27 22:14:59,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 474 transitions, 9754 flow [2024-06-27 22:14:59,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:14:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:14:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 22:14:59,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-27 22:14:59,042 INFO L175 Difference]: Start difference. First operand has 235 places, 444 transitions, 8477 flow. Second operand 9 states and 143 transitions. [2024-06-27 22:14:59,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 474 transitions, 9754 flow [2024-06-27 22:14:59,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 474 transitions, 9531 flow, removed 105 selfloop flow, removed 1 redundant places. [2024-06-27 22:14:59,299 INFO L231 Difference]: Finished difference. Result has 244 places, 449 transitions, 8388 flow [2024-06-27 22:14:59,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8254, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8388, PETRI_PLACES=244, PETRI_TRANSITIONS=449} [2024-06-27 22:14:59,299 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 204 predicate places. [2024-06-27 22:14:59,300 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 449 transitions, 8388 flow [2024-06-27 22:14:59,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:14:59,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:14:59,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:14:59,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:14:59,301 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:14:59,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:14:59,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2050999916, now seen corresponding path program 1 times [2024-06-27 22:14:59,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:14:59,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703836211] [2024-06-27 22:14:59,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:14:59,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:14:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:14:59,925 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 22:14:59,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:14:59,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703836211] [2024-06-27 22:14:59,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703836211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:14:59,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:14:59,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:14:59,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408120910] [2024-06-27 22:14:59,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:14:59,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:14:59,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:14:59,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:14:59,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:14:59,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:14:59,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 449 transitions, 8388 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 22:14:59,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:14:59,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:14:59,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:00,712 INFO L124 PetriNetUnfolderBase]: 1545/2668 cut-off events. [2024-06-27 22:15:00,712 INFO L125 PetriNetUnfolderBase]: For 99891/99928 co-relation queries the response was YES. [2024-06-27 22:15:00,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24756 conditions, 2668 events. 1545/2668 cut-off events. For 99891/99928 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 15707 event pairs, 242 based on Foata normal form. 12/2620 useless extension candidates. Maximal degree in co-relation 24638. Up to 2027 conditions per place. [2024-06-27 22:15:00,743 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 336 selfloop transitions, 80 changer transitions 0/481 dead transitions. [2024-06-27 22:15:00,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 481 transitions, 9532 flow [2024-06-27 22:15:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:15:00,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:15:00,745 INFO L175 Difference]: Start difference. First operand has 244 places, 449 transitions, 8388 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:15:00,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 481 transitions, 9532 flow [2024-06-27 22:15:01,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 481 transitions, 9445 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 22:15:01,061 INFO L231 Difference]: Finished difference. Result has 247 places, 455 transitions, 8666 flow [2024-06-27 22:15:01,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8301, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8666, PETRI_PLACES=247, PETRI_TRANSITIONS=455} [2024-06-27 22:15:01,062 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 207 predicate places. [2024-06-27 22:15:01,062 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 455 transitions, 8666 flow [2024-06-27 22:15:01,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 22:15:01,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:01,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:01,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:15:01,063 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:01,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:01,063 INFO L85 PathProgramCache]: Analyzing trace with hash -314037012, now seen corresponding path program 2 times [2024-06-27 22:15:01,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:01,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081098650] [2024-06-27 22:15:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:01,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:01,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:01,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081098650] [2024-06-27 22:15:01,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081098650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:01,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:01,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:01,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198251065] [2024-06-27 22:15:01,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:01,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:01,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:01,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:01,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:01,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:01,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 455 transitions, 8666 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:01,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:01,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:01,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:02,728 INFO L124 PetriNetUnfolderBase]: 1696/2852 cut-off events. [2024-06-27 22:15:02,729 INFO L125 PetriNetUnfolderBase]: For 113338/113338 co-relation queries the response was YES. [2024-06-27 22:15:02,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27199 conditions, 2852 events. 1696/2852 cut-off events. For 113338/113338 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 16259 event pairs, 338 based on Foata normal form. 2/2802 useless extension candidates. Maximal degree in co-relation 27079. Up to 2494 conditions per place. [2024-06-27 22:15:02,760 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 423 selfloop transitions, 66 changer transitions 0/495 dead transitions. [2024-06-27 22:15:02,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 495 transitions, 10087 flow [2024-06-27 22:15:02,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:15:02,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:15:02,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 22:15:02,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2024-06-27 22:15:02,762 INFO L175 Difference]: Start difference. First operand has 247 places, 455 transitions, 8666 flow. Second operand 9 states and 155 transitions. [2024-06-27 22:15:02,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 495 transitions, 10087 flow [2024-06-27 22:15:03,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 495 transitions, 9826 flow, removed 85 selfloop flow, removed 5 redundant places. [2024-06-27 22:15:03,150 INFO L231 Difference]: Finished difference. Result has 252 places, 466 transitions, 8917 flow [2024-06-27 22:15:03,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8499, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8917, PETRI_PLACES=252, PETRI_TRANSITIONS=466} [2024-06-27 22:15:03,151 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 212 predicate places. [2024-06-27 22:15:03,151 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 466 transitions, 8917 flow [2024-06-27 22:15:03,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:03,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:03,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:03,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:15:03,152 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:03,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:03,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1685111401, now seen corresponding path program 1 times [2024-06-27 22:15:03,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:03,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465617861] [2024-06-27 22:15:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:03,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:04,488 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 22:15:04,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:04,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465617861] [2024-06-27 22:15:04,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465617861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:04,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:04,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:04,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105574525] [2024-06-27 22:15:04,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:04,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:04,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:04,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:04,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:04,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:04,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 466 transitions, 8917 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:04,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:04,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:04,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:05,422 INFO L124 PetriNetUnfolderBase]: 1758/2999 cut-off events. [2024-06-27 22:15:05,422 INFO L125 PetriNetUnfolderBase]: For 118211/118211 co-relation queries the response was YES. [2024-06-27 22:15:05,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28240 conditions, 2999 events. 1758/2999 cut-off events. For 118211/118211 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 17678 event pairs, 299 based on Foata normal form. 1/2935 useless extension candidates. Maximal degree in co-relation 28119. Up to 2468 conditions per place. [2024-06-27 22:15:05,458 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 414 selfloop transitions, 102 changer transitions 2/524 dead transitions. [2024-06-27 22:15:05,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 524 transitions, 10548 flow [2024-06-27 22:15:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:05,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:05,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-27 22:15:05,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-27 22:15:05,463 INFO L175 Difference]: Start difference. First operand has 252 places, 466 transitions, 8917 flow. Second operand 8 states and 159 transitions. [2024-06-27 22:15:05,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 524 transitions, 10548 flow [2024-06-27 22:15:05,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 524 transitions, 10305 flow, removed 99 selfloop flow, removed 4 redundant places. [2024-06-27 22:15:05,929 INFO L231 Difference]: Finished difference. Result has 257 places, 484 transitions, 9366 flow [2024-06-27 22:15:05,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8674, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9366, PETRI_PLACES=257, PETRI_TRANSITIONS=484} [2024-06-27 22:15:05,930 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 217 predicate places. [2024-06-27 22:15:05,930 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 484 transitions, 9366 flow [2024-06-27 22:15:05,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:05,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:05,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:05,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:15:05,930 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:05,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:05,931 INFO L85 PathProgramCache]: Analyzing trace with hash -684707884, now seen corresponding path program 1 times [2024-06-27 22:15:05,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:05,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103325384] [2024-06-27 22:15:05,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:05,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:06,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:06,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103325384] [2024-06-27 22:15:06,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103325384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:06,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:06,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:15:06,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933201581] [2024-06-27 22:15:06,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:06,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:15:06,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:06,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:15:06,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:15:06,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:15:06,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 484 transitions, 9366 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 22:15:06,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:06,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:15:06,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:07,615 INFO L124 PetriNetUnfolderBase]: 1749/2977 cut-off events. [2024-06-27 22:15:07,615 INFO L125 PetriNetUnfolderBase]: For 133752/133752 co-relation queries the response was YES. [2024-06-27 22:15:07,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29461 conditions, 2977 events. 1749/2977 cut-off events. For 133752/133752 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 17689 event pairs, 282 based on Foata normal form. 4/2913 useless extension candidates. Maximal degree in co-relation 29339. Up to 2171 conditions per place. [2024-06-27 22:15:07,653 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 402 selfloop transitions, 131 changer transitions 3/550 dead transitions. [2024-06-27 22:15:07,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 550 transitions, 11651 flow [2024-06-27 22:15:07,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:07,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-27 22:15:07,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5868055555555556 [2024-06-27 22:15:07,662 INFO L175 Difference]: Start difference. First operand has 257 places, 484 transitions, 9366 flow. Second operand 8 states and 169 transitions. [2024-06-27 22:15:07,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 550 transitions, 11651 flow [2024-06-27 22:15:08,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 550 transitions, 11282 flow, removed 135 selfloop flow, removed 3 redundant places. [2024-06-27 22:15:08,055 INFO L231 Difference]: Finished difference. Result has 264 places, 504 transitions, 10031 flow [2024-06-27 22:15:08,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9085, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10031, PETRI_PLACES=264, PETRI_TRANSITIONS=504} [2024-06-27 22:15:08,056 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 224 predicate places. [2024-06-27 22:15:08,056 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 504 transitions, 10031 flow [2024-06-27 22:15:08,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 22:15:08,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:08,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:08,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:15:08,056 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:08,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:08,057 INFO L85 PathProgramCache]: Analyzing trace with hash -684892396, now seen corresponding path program 3 times [2024-06-27 22:15:08,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:08,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137120731] [2024-06-27 22:15:08,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:08,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:08,970 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 22:15:08,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:08,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137120731] [2024-06-27 22:15:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137120731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:08,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:08,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:08,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796567980] [2024-06-27 22:15:08,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:08,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:08,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:08,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:08,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:09,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:09,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 504 transitions, 10031 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:09,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:09,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:09,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:09,879 INFO L124 PetriNetUnfolderBase]: 1884/3163 cut-off events. [2024-06-27 22:15:09,879 INFO L125 PetriNetUnfolderBase]: For 140875/140875 co-relation queries the response was YES. [2024-06-27 22:15:09,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31343 conditions, 3163 events. 1884/3163 cut-off events. For 140875/140875 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 18497 event pairs, 336 based on Foata normal form. 2/3108 useless extension candidates. Maximal degree in co-relation 31217. Up to 2807 conditions per place. [2024-06-27 22:15:09,917 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 440 selfloop transitions, 85 changer transitions 0/531 dead transitions. [2024-06-27 22:15:09,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 531 transitions, 11247 flow [2024-06-27 22:15:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:15:09,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:15:09,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 22:15:09,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2024-06-27 22:15:09,918 INFO L175 Difference]: Start difference. First operand has 264 places, 504 transitions, 10031 flow. Second operand 9 states and 151 transitions. [2024-06-27 22:15:09,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 531 transitions, 11247 flow [2024-06-27 22:15:10,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 531 transitions, 10982 flow, removed 80 selfloop flow, removed 3 redundant places. [2024-06-27 22:15:10,391 INFO L231 Difference]: Finished difference. Result has 270 places, 506 transitions, 10035 flow [2024-06-27 22:15:10,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9766, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10035, PETRI_PLACES=270, PETRI_TRANSITIONS=506} [2024-06-27 22:15:10,392 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 230 predicate places. [2024-06-27 22:15:10,393 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 506 transitions, 10035 flow [2024-06-27 22:15:10,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:10,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:10,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:10,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:15:10,397 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:10,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:10,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2126944767, now seen corresponding path program 2 times [2024-06-27 22:15:10,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:10,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430580780] [2024-06-27 22:15:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:10,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:11,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:11,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430580780] [2024-06-27 22:15:11,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430580780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:11,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:11,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:11,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959727262] [2024-06-27 22:15:11,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:11,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:11,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:11,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:11,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:11,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:11,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 506 transitions, 10035 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:11,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:11,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:11,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:12,513 INFO L124 PetriNetUnfolderBase]: 1892/3189 cut-off events. [2024-06-27 22:15:12,513 INFO L125 PetriNetUnfolderBase]: For 139824/139824 co-relation queries the response was YES. [2024-06-27 22:15:12,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31143 conditions, 3189 events. 1892/3189 cut-off events. For 139824/139824 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 18731 event pairs, 266 based on Foata normal form. 1/3129 useless extension candidates. Maximal degree in co-relation 31014. Up to 2711 conditions per place. [2024-06-27 22:15:12,550 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 436 selfloop transitions, 106 changer transitions 0/548 dead transitions. [2024-06-27 22:15:12,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 548 transitions, 11431 flow [2024-06-27 22:15:12,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:15:12,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:15:12,551 INFO L175 Difference]: Start difference. First operand has 270 places, 506 transitions, 10035 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:15:12,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 548 transitions, 11431 flow [2024-06-27 22:15:12,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 548 transitions, 11182 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 22:15:12,985 INFO L231 Difference]: Finished difference. Result has 271 places, 516 transitions, 10217 flow [2024-06-27 22:15:12,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9786, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10217, PETRI_PLACES=271, PETRI_TRANSITIONS=516} [2024-06-27 22:15:12,986 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 231 predicate places. [2024-06-27 22:15:12,986 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 516 transitions, 10217 flow [2024-06-27 22:15:12,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:12,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:12,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:12,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:15:12,987 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:12,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:12,987 INFO L85 PathProgramCache]: Analyzing trace with hash 141688884, now seen corresponding path program 4 times [2024-06-27 22:15:12,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:12,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205908580] [2024-06-27 22:15:12,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:12,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:13,837 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 22:15:13,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:13,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205908580] [2024-06-27 22:15:13,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205908580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:13,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:13,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:13,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887561123] [2024-06-27 22:15:13,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:13,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:13,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:13,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:13,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:13,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:13,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 516 transitions, 10217 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:13,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:13,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:13,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:15,025 INFO L124 PetriNetUnfolderBase]: 1922/3223 cut-off events. [2024-06-27 22:15:15,025 INFO L125 PetriNetUnfolderBase]: For 147866/147866 co-relation queries the response was YES. [2024-06-27 22:15:15,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31701 conditions, 3223 events. 1922/3223 cut-off events. For 147866/147866 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18934 event pairs, 371 based on Foata normal form. 2/3168 useless extension candidates. Maximal degree in co-relation 31572. Up to 2818 conditions per place. [2024-06-27 22:15:15,068 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 450 selfloop transitions, 98 changer transitions 0/554 dead transitions. [2024-06-27 22:15:15,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 554 transitions, 11680 flow [2024-06-27 22:15:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:15:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:15:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 22:15:15,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2024-06-27 22:15:15,070 INFO L175 Difference]: Start difference. First operand has 271 places, 516 transitions, 10217 flow. Second operand 9 states and 155 transitions. [2024-06-27 22:15:15,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 554 transitions, 11680 flow [2024-06-27 22:15:15,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 554 transitions, 11450 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 22:15:15,588 INFO L231 Difference]: Finished difference. Result has 275 places, 524 transitions, 10427 flow [2024-06-27 22:15:15,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9987, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10427, PETRI_PLACES=275, PETRI_TRANSITIONS=524} [2024-06-27 22:15:15,589 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 235 predicate places. [2024-06-27 22:15:15,589 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 524 transitions, 10427 flow [2024-06-27 22:15:15,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:15,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:15,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:15,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:15:15,589 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:15,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:15,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1794429225, now seen corresponding path program 3 times [2024-06-27 22:15:15,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:15,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075790524] [2024-06-27 22:15:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:15,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:16,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:16,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075790524] [2024-06-27 22:15:16,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075790524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:16,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:16,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:16,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077649375] [2024-06-27 22:15:16,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:16,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:16,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:16,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:16,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:16,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:16,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 524 transitions, 10427 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:16,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:16,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:16,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:17,814 INFO L124 PetriNetUnfolderBase]: 1993/3348 cut-off events. [2024-06-27 22:15:17,814 INFO L125 PetriNetUnfolderBase]: For 155293/155293 co-relation queries the response was YES. [2024-06-27 22:15:17,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33084 conditions, 3348 events. 1993/3348 cut-off events. For 155293/155293 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 19829 event pairs, 301 based on Foata normal form. 2/3288 useless extension candidates. Maximal degree in co-relation 32953. Up to 2753 conditions per place. [2024-06-27 22:15:17,852 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 464 selfloop transitions, 135 changer transitions 2/607 dead transitions. [2024-06-27 22:15:17,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 607 transitions, 12997 flow [2024-06-27 22:15:17,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:17,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-27 22:15:17,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 22:15:17,853 INFO L175 Difference]: Start difference. First operand has 275 places, 524 transitions, 10427 flow. Second operand 8 states and 160 transitions. [2024-06-27 22:15:17,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 607 transitions, 12997 flow [2024-06-27 22:15:18,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 607 transitions, 12610 flow, removed 87 selfloop flow, removed 7 redundant places. [2024-06-27 22:15:18,321 INFO L231 Difference]: Finished difference. Result has 278 places, 561 transitions, 11494 flow [2024-06-27 22:15:18,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10073, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11494, PETRI_PLACES=278, PETRI_TRANSITIONS=561} [2024-06-27 22:15:18,322 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 238 predicate places. [2024-06-27 22:15:18,322 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 561 transitions, 11494 flow [2024-06-27 22:15:18,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:18,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:18,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:18,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:15:18,322 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:18,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:18,323 INFO L85 PathProgramCache]: Analyzing trace with hash 662935048, now seen corresponding path program 2 times [2024-06-27 22:15:18,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:18,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743431410] [2024-06-27 22:15:18,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:18,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:19,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:19,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743431410] [2024-06-27 22:15:19,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743431410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:19,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:19,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:19,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819597557] [2024-06-27 22:15:19,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:19,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:19,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:19,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:19,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:19,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:15:19,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 561 transitions, 11494 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:19,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:19,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:15:19,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:20,504 INFO L124 PetriNetUnfolderBase]: 2035/3449 cut-off events. [2024-06-27 22:15:20,505 INFO L125 PetriNetUnfolderBase]: For 180059/180059 co-relation queries the response was YES. [2024-06-27 22:15:20,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35177 conditions, 3449 events. 2035/3449 cut-off events. For 180059/180059 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 21141 event pairs, 428 based on Foata normal form. 4/3377 useless extension candidates. Maximal degree in co-relation 35044. Up to 2876 conditions per place. [2024-06-27 22:15:20,546 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 529 selfloop transitions, 68 changer transitions 4/614 dead transitions. [2024-06-27 22:15:20,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 614 transitions, 13829 flow [2024-06-27 22:15:20,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:15:20,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2024-06-27 22:15:20,548 INFO L175 Difference]: Start difference. First operand has 278 places, 561 transitions, 11494 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:15:20,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 614 transitions, 13829 flow [2024-06-27 22:15:21,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 614 transitions, 13582 flow, removed 64 selfloop flow, removed 3 redundant places. [2024-06-27 22:15:21,123 INFO L231 Difference]: Finished difference. Result has 286 places, 578 transitions, 12037 flow [2024-06-27 22:15:21,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11247, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12037, PETRI_PLACES=286, PETRI_TRANSITIONS=578} [2024-06-27 22:15:21,124 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 246 predicate places. [2024-06-27 22:15:21,124 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 578 transitions, 12037 flow [2024-06-27 22:15:21,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:21,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:21,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:21,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:15:21,124 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:21,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:21,125 INFO L85 PathProgramCache]: Analyzing trace with hash -194757630, now seen corresponding path program 3 times [2024-06-27 22:15:21,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:21,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045986739] [2024-06-27 22:15:21,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:21,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:22,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:22,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045986739] [2024-06-27 22:15:22,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045986739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:22,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:22,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:22,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365968906] [2024-06-27 22:15:22,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:22,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:22,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:22,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:22,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:22,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:15:22,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 578 transitions, 12037 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:22,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:22,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:15:22,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:23,304 INFO L124 PetriNetUnfolderBase]: 2042/3457 cut-off events. [2024-06-27 22:15:23,304 INFO L125 PetriNetUnfolderBase]: For 184116/184116 co-relation queries the response was YES. [2024-06-27 22:15:23,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35672 conditions, 3457 events. 2042/3457 cut-off events. For 184116/184116 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 21159 event pairs, 457 based on Foata normal form. 2/3384 useless extension candidates. Maximal degree in co-relation 35535. Up to 2885 conditions per place. [2024-06-27 22:15:23,344 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 528 selfloop transitions, 83 changer transitions 4/628 dead transitions. [2024-06-27 22:15:23,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 628 transitions, 14290 flow [2024-06-27 22:15:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:23,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 22:15:23,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:15:23,345 INFO L175 Difference]: Start difference. First operand has 286 places, 578 transitions, 12037 flow. Second operand 8 states and 156 transitions. [2024-06-27 22:15:23,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 628 transitions, 14290 flow [2024-06-27 22:15:23,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 628 transitions, 14037 flow, removed 118 selfloop flow, removed 2 redundant places. [2024-06-27 22:15:23,953 INFO L231 Difference]: Finished difference. Result has 294 places, 594 transitions, 12562 flow [2024-06-27 22:15:23,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11818, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12562, PETRI_PLACES=294, PETRI_TRANSITIONS=594} [2024-06-27 22:15:23,954 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 254 predicate places. [2024-06-27 22:15:23,955 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 594 transitions, 12562 flow [2024-06-27 22:15:23,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:23,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:23,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:23,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:15:23,955 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:23,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash -194959440, now seen corresponding path program 4 times [2024-06-27 22:15:23,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:23,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142459820] [2024-06-27 22:15:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:23,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:24,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:24,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142459820] [2024-06-27 22:15:24,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142459820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:24,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:24,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:15:24,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817473690] [2024-06-27 22:15:24,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:24,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:15:24,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:24,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:15:24,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:15:24,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:15:24,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 594 transitions, 12562 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 22:15:24,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:24,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:15:24,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:25,953 INFO L124 PetriNetUnfolderBase]: 2159/3680 cut-off events. [2024-06-27 22:15:25,953 INFO L125 PetriNetUnfolderBase]: For 201769/201769 co-relation queries the response was YES. [2024-06-27 22:15:25,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38138 conditions, 3680 events. 2159/3680 cut-off events. For 201769/201769 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 22849 event pairs, 325 based on Foata normal form. 4/3596 useless extension candidates. Maximal degree in co-relation 37998. Up to 2558 conditions per place. [2024-06-27 22:15:26,001 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 431 selfloop transitions, 202 changer transitions 4/651 dead transitions. [2024-06-27 22:15:26,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 651 transitions, 14975 flow [2024-06-27 22:15:26,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:26,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-27 22:15:26,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-27 22:15:26,003 INFO L175 Difference]: Start difference. First operand has 294 places, 594 transitions, 12562 flow. Second operand 8 states and 168 transitions. [2024-06-27 22:15:26,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 651 transitions, 14975 flow [2024-06-27 22:15:26,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 651 transitions, 14796 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-06-27 22:15:26,570 INFO L231 Difference]: Finished difference. Result has 301 places, 611 transitions, 13543 flow [2024-06-27 22:15:26,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12383, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13543, PETRI_PLACES=301, PETRI_TRANSITIONS=611} [2024-06-27 22:15:26,570 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 261 predicate places. [2024-06-27 22:15:26,570 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 611 transitions, 13543 flow [2024-06-27 22:15:26,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 22:15:26,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:26,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:26,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:15:26,571 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:26,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:26,571 INFO L85 PathProgramCache]: Analyzing trace with hash 662927391, now seen corresponding path program 4 times [2024-06-27 22:15:26,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:26,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153399097] [2024-06-27 22:15:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:26,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:27,771 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 22:15:27,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:27,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153399097] [2024-06-27 22:15:27,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153399097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:27,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:27,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:27,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602286096] [2024-06-27 22:15:27,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:27,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:27,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:27,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:27,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:27,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:27,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 611 transitions, 13543 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:27,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:27,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:27,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:28,944 INFO L124 PetriNetUnfolderBase]: 2283/3823 cut-off events. [2024-06-27 22:15:28,944 INFO L125 PetriNetUnfolderBase]: For 209679/209679 co-relation queries the response was YES. [2024-06-27 22:15:28,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40735 conditions, 3823 events. 2283/3823 cut-off events. For 209679/209679 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 23251 event pairs, 517 based on Foata normal form. 1/3756 useless extension candidates. Maximal degree in co-relation 40591. Up to 3520 conditions per place. [2024-06-27 22:15:28,996 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 582 selfloop transitions, 48 changer transitions 0/636 dead transitions. [2024-06-27 22:15:28,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 636 transitions, 15037 flow [2024-06-27 22:15:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 22:15:28,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-06-27 22:15:28,997 INFO L175 Difference]: Start difference. First operand has 301 places, 611 transitions, 13543 flow. Second operand 8 states and 139 transitions. [2024-06-27 22:15:28,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 636 transitions, 15037 flow [2024-06-27 22:15:29,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 636 transitions, 14606 flow, removed 184 selfloop flow, removed 2 redundant places. [2024-06-27 22:15:29,825 INFO L231 Difference]: Finished difference. Result has 307 places, 612 transitions, 13285 flow [2024-06-27 22:15:29,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13112, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13285, PETRI_PLACES=307, PETRI_TRANSITIONS=612} [2024-06-27 22:15:29,826 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 267 predicate places. [2024-06-27 22:15:29,826 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 612 transitions, 13285 flow [2024-06-27 22:15:29,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:29,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:29,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:29,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:15:29,826 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:29,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash -194965392, now seen corresponding path program 5 times [2024-06-27 22:15:29,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:29,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732942835] [2024-06-27 22:15:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:29,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:30,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:30,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732942835] [2024-06-27 22:15:30,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732942835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:30,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:30,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:30,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097392254] [2024-06-27 22:15:30,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:30,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:30,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:30,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:30,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:30,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:30,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 612 transitions, 13285 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:30,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:30,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:30,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:31,901 INFO L124 PetriNetUnfolderBase]: 2298/3837 cut-off events. [2024-06-27 22:15:31,901 INFO L125 PetriNetUnfolderBase]: For 203013/203013 co-relation queries the response was YES. [2024-06-27 22:15:31,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40252 conditions, 3837 events. 2298/3837 cut-off events. For 203013/203013 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 23211 event pairs, 433 based on Foata normal form. 2/3771 useless extension candidates. Maximal degree in co-relation 40106. Up to 3352 conditions per place. [2024-06-27 22:15:31,950 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 481 selfloop transitions, 155 changer transitions 0/642 dead transitions. [2024-06-27 22:15:31,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 642 transitions, 14850 flow [2024-06-27 22:15:31,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:15:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:15:31,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 22:15:31,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2024-06-27 22:15:31,952 INFO L175 Difference]: Start difference. First operand has 307 places, 612 transitions, 13285 flow. Second operand 9 states and 155 transitions. [2024-06-27 22:15:31,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 642 transitions, 14850 flow [2024-06-27 22:15:32,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 642 transitions, 14714 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 22:15:32,684 INFO L231 Difference]: Finished difference. Result has 311 places, 615 transitions, 13636 flow [2024-06-27 22:15:32,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13149, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13636, PETRI_PLACES=311, PETRI_TRANSITIONS=615} [2024-06-27 22:15:32,685 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 271 predicate places. [2024-06-27 22:15:32,685 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 615 transitions, 13636 flow [2024-06-27 22:15:32,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:32,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:32,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:32,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:15:32,685 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:32,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:32,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1678100175, now seen corresponding path program 5 times [2024-06-27 22:15:32,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:32,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981107621] [2024-06-27 22:15:32,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:32,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:33,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:33,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981107621] [2024-06-27 22:15:33,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981107621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:33,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:33,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:33,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753725744] [2024-06-27 22:15:33,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:33,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:33,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:33,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:33,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:33,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:33,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 615 transitions, 13636 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:33,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:33,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:33,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:35,051 INFO L124 PetriNetUnfolderBase]: 2323/3894 cut-off events. [2024-06-27 22:15:35,052 INFO L125 PetriNetUnfolderBase]: For 210231/210231 co-relation queries the response was YES. [2024-06-27 22:15:35,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41067 conditions, 3894 events. 2323/3894 cut-off events. For 210231/210231 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 23673 event pairs, 349 based on Foata normal form. 1/3821 useless extension candidates. Maximal degree in co-relation 40919. Up to 3140 conditions per place. [2024-06-27 22:15:35,107 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 460 selfloop transitions, 193 changer transitions 3/662 dead transitions. [2024-06-27 22:15:35,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 662 transitions, 15433 flow [2024-06-27 22:15:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:35,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-06-27 22:15:35,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 22:15:35,108 INFO L175 Difference]: Start difference. First operand has 311 places, 615 transitions, 13636 flow. Second operand 8 states and 160 transitions. [2024-06-27 22:15:35,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 662 transitions, 15433 flow [2024-06-27 22:15:35,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 662 transitions, 15068 flow, removed 79 selfloop flow, removed 6 redundant places. [2024-06-27 22:15:35,863 INFO L231 Difference]: Finished difference. Result has 315 places, 622 transitions, 14028 flow [2024-06-27 22:15:35,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13271, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14028, PETRI_PLACES=315, PETRI_TRANSITIONS=622} [2024-06-27 22:15:35,864 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 275 predicate places. [2024-06-27 22:15:35,864 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 622 transitions, 14028 flow [2024-06-27 22:15:35,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:35,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:35,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:35,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:15:35,865 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:35,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:35,865 INFO L85 PathProgramCache]: Analyzing trace with hash 568063732, now seen corresponding path program 6 times [2024-06-27 22:15:35,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:35,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074958273] [2024-06-27 22:15:35,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:35,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:36,678 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 22:15:36,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:36,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074958273] [2024-06-27 22:15:36,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074958273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:36,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:36,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:36,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86398802] [2024-06-27 22:15:36,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:36,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:36,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:36,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:36,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:36,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:36,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 622 transitions, 14028 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:36,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:36,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:36,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:37,976 INFO L124 PetriNetUnfolderBase]: 2373/3961 cut-off events. [2024-06-27 22:15:37,977 INFO L125 PetriNetUnfolderBase]: For 217936/217936 co-relation queries the response was YES. [2024-06-27 22:15:38,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42190 conditions, 3961 events. 2373/3961 cut-off events. For 217936/217936 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 24237 event pairs, 384 based on Foata normal form. 2/3892 useless extension candidates. Maximal degree in co-relation 42040. Up to 3545 conditions per place. [2024-06-27 22:15:38,033 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 576 selfloop transitions, 84 changer transitions 0/666 dead transitions. [2024-06-27 22:15:38,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 666 transitions, 15996 flow [2024-06-27 22:15:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:15:38,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:15:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 22:15:38,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 22:15:38,035 INFO L175 Difference]: Start difference. First operand has 315 places, 622 transitions, 14028 flow. Second operand 9 states and 150 transitions. [2024-06-27 22:15:38,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 666 transitions, 15996 flow [2024-06-27 22:15:38,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 666 transitions, 15703 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 22:15:38,960 INFO L231 Difference]: Finished difference. Result has 322 places, 645 transitions, 14559 flow [2024-06-27 22:15:38,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13742, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14559, PETRI_PLACES=322, PETRI_TRANSITIONS=645} [2024-06-27 22:15:38,961 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 282 predicate places. [2024-06-27 22:15:38,961 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 645 transitions, 14559 flow [2024-06-27 22:15:38,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:38,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:38,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:38,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:15:38,961 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:38,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:38,962 INFO L85 PathProgramCache]: Analyzing trace with hash 568125112, now seen corresponding path program 7 times [2024-06-27 22:15:38,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:38,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827191622] [2024-06-27 22:15:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:38,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:39,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:39,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827191622] [2024-06-27 22:15:39,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827191622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:39,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:39,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:39,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399347215] [2024-06-27 22:15:39,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:39,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:39,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:39,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:39,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:39,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:39,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 645 transitions, 14559 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:39,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:39,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:39,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:41,238 INFO L124 PetriNetUnfolderBase]: 2411/4021 cut-off events. [2024-06-27 22:15:41,238 INFO L125 PetriNetUnfolderBase]: For 225257/225257 co-relation queries the response was YES. [2024-06-27 22:15:41,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42806 conditions, 4021 events. 2411/4021 cut-off events. For 225257/225257 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 24673 event pairs, 396 based on Foata normal form. 2/3953 useless extension candidates. Maximal degree in co-relation 42652. Up to 3593 conditions per place. [2024-06-27 22:15:41,293 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 565 selfloop transitions, 109 changer transitions 0/680 dead transitions. [2024-06-27 22:15:41,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 680 transitions, 16415 flow [2024-06-27 22:15:41,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:15:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:15:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 22:15:41,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 22:15:41,295 INFO L175 Difference]: Start difference. First operand has 322 places, 645 transitions, 14559 flow. Second operand 9 states and 150 transitions. [2024-06-27 22:15:41,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 680 transitions, 16415 flow [2024-06-27 22:15:42,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 680 transitions, 16025 flow, removed 126 selfloop flow, removed 4 redundant places. [2024-06-27 22:15:42,376 INFO L231 Difference]: Finished difference. Result has 328 places, 661 transitions, 14923 flow [2024-06-27 22:15:42,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14171, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14923, PETRI_PLACES=328, PETRI_TRANSITIONS=661} [2024-06-27 22:15:42,377 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 288 predicate places. [2024-06-27 22:15:42,377 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 661 transitions, 14923 flow [2024-06-27 22:15:42,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:42,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:42,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:42,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:15:42,378 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:42,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:42,378 INFO L85 PathProgramCache]: Analyzing trace with hash 568125267, now seen corresponding path program 6 times [2024-06-27 22:15:42,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:42,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443309188] [2024-06-27 22:15:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:42,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:43,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443309188] [2024-06-27 22:15:43,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443309188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:43,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:43,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:43,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291364914] [2024-06-27 22:15:43,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:43,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:43,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:43,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:43,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:43,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:43,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 661 transitions, 14923 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:43,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:43,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:43,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:44,826 INFO L124 PetriNetUnfolderBase]: 2451/4107 cut-off events. [2024-06-27 22:15:44,827 INFO L125 PetriNetUnfolderBase]: For 228796/228796 co-relation queries the response was YES. [2024-06-27 22:15:44,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43595 conditions, 4107 events. 2451/4107 cut-off events. For 228796/228796 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 25374 event pairs, 310 based on Foata normal form. 1/4030 useless extension candidates. Maximal degree in co-relation 43438. Up to 3511 conditions per place. [2024-06-27 22:15:44,884 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 571 selfloop transitions, 130 changer transitions 2/709 dead transitions. [2024-06-27 22:15:44,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 709 transitions, 16918 flow [2024-06-27 22:15:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:44,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:15:44,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 22:15:44,885 INFO L175 Difference]: Start difference. First operand has 328 places, 661 transitions, 14923 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:15:44,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 709 transitions, 16918 flow [2024-06-27 22:15:45,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 709 transitions, 16529 flow, removed 97 selfloop flow, removed 7 redundant places. [2024-06-27 22:15:45,831 INFO L231 Difference]: Finished difference. Result has 330 places, 673 transitions, 15181 flow [2024-06-27 22:15:45,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14534, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15181, PETRI_PLACES=330, PETRI_TRANSITIONS=673} [2024-06-27 22:15:45,832 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 290 predicate places. [2024-06-27 22:15:45,832 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 673 transitions, 15181 flow [2024-06-27 22:15:45,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:45,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:45,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:45,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:15:45,833 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:45,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:45,833 INFO L85 PathProgramCache]: Analyzing trace with hash 570950607, now seen corresponding path program 7 times [2024-06-27 22:15:45,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:45,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090336596] [2024-06-27 22:15:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:45,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:46,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:46,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090336596] [2024-06-27 22:15:46,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090336596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:46,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:46,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:46,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297906329] [2024-06-27 22:15:46,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:46,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:46,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:46,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:46,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:46,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:46,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 673 transitions, 15181 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:46,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:46,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:46,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:48,132 INFO L124 PetriNetUnfolderBase]: 2479/4144 cut-off events. [2024-06-27 22:15:48,132 INFO L125 PetriNetUnfolderBase]: For 228886/228886 co-relation queries the response was YES. [2024-06-27 22:15:48,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44220 conditions, 4144 events. 2479/4144 cut-off events. For 228886/228886 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25576 event pairs, 311 based on Foata normal form. 1/4069 useless extension candidates. Maximal degree in co-relation 44061. Up to 3554 conditions per place. [2024-06-27 22:15:48,201 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 584 selfloop transitions, 128 changer transitions 2/720 dead transitions. [2024-06-27 22:15:48,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 720 transitions, 17196 flow [2024-06-27 22:15:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:48,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 22:15:48,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 22:15:48,203 INFO L175 Difference]: Start difference. First operand has 330 places, 673 transitions, 15181 flow. Second operand 8 states and 152 transitions. [2024-06-27 22:15:48,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 720 transitions, 17196 flow [2024-06-27 22:15:49,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 720 transitions, 16892 flow, removed 86 selfloop flow, removed 3 redundant places. [2024-06-27 22:15:49,301 INFO L231 Difference]: Finished difference. Result has 336 places, 685 transitions, 15518 flow [2024-06-27 22:15:49,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14919, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15518, PETRI_PLACES=336, PETRI_TRANSITIONS=685} [2024-06-27 22:15:49,303 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 296 predicate places. [2024-06-27 22:15:49,303 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 685 transitions, 15518 flow [2024-06-27 22:15:49,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:49,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:49,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:49,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:15:49,304 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:49,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:49,305 INFO L85 PathProgramCache]: Analyzing trace with hash 687135507, now seen corresponding path program 8 times [2024-06-27 22:15:49,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:49,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808724004] [2024-06-27 22:15:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:49,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:50,549 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 22:15:50,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808724004] [2024-06-27 22:15:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808724004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:50,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:50,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:50,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142731117] [2024-06-27 22:15:50,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:50,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:50,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:50,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:50,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:50,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:50,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 685 transitions, 15518 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:50,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:50,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:50,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:51,974 INFO L124 PetriNetUnfolderBase]: 2521/4212 cut-off events. [2024-06-27 22:15:51,975 INFO L125 PetriNetUnfolderBase]: For 230153/230153 co-relation queries the response was YES. [2024-06-27 22:15:52,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44826 conditions, 4212 events. 2521/4212 cut-off events. For 230153/230153 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 26076 event pairs, 307 based on Foata normal form. 1/4136 useless extension candidates. Maximal degree in co-relation 44665. Up to 3495 conditions per place. [2024-06-27 22:15:52,035 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 544 selfloop transitions, 184 changer transitions 3/737 dead transitions. [2024-06-27 22:15:52,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 737 transitions, 17669 flow [2024-06-27 22:15:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:52,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:52,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 22:15:52,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 22:15:52,037 INFO L175 Difference]: Start difference. First operand has 336 places, 685 transitions, 15518 flow. Second operand 8 states and 153 transitions. [2024-06-27 22:15:52,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 737 transitions, 17669 flow [2024-06-27 22:15:53,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 737 transitions, 17357 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-27 22:15:53,016 INFO L231 Difference]: Finished difference. Result has 341 places, 706 transitions, 16254 flow [2024-06-27 22:15:53,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=15262, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16254, PETRI_PLACES=341, PETRI_TRANSITIONS=706} [2024-06-27 22:15:53,017 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 301 predicate places. [2024-06-27 22:15:53,017 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 706 transitions, 16254 flow [2024-06-27 22:15:53,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:53,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:53,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:53,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:15:53,018 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:53,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:53,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1106772194, now seen corresponding path program 8 times [2024-06-27 22:15:53,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:53,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404938477] [2024-06-27 22:15:53,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:53,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:53,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:53,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404938477] [2024-06-27 22:15:53,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404938477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:53,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:53,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:53,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106057196] [2024-06-27 22:15:53,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:53,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:53,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:53,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:53,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:53,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:53,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 706 transitions, 16254 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:53,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:53,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:53,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:55,363 INFO L124 PetriNetUnfolderBase]: 2545/4234 cut-off events. [2024-06-27 22:15:55,363 INFO L125 PetriNetUnfolderBase]: For 241148/241148 co-relation queries the response was YES. [2024-06-27 22:15:55,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45705 conditions, 4234 events. 2545/4234 cut-off events. For 241148/241148 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 26187 event pairs, 425 based on Foata normal form. 2/4165 useless extension candidates. Maximal degree in co-relation 45542. Up to 3778 conditions per place. [2024-06-27 22:15:55,425 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 587 selfloop transitions, 140 changer transitions 0/733 dead transitions. [2024-06-27 22:15:55,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 733 transitions, 18011 flow [2024-06-27 22:15:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 22:15:55,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 22:15:55,426 INFO L175 Difference]: Start difference. First operand has 341 places, 706 transitions, 16254 flow. Second operand 8 states and 142 transitions. [2024-06-27 22:15:55,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 733 transitions, 18011 flow [2024-06-27 22:15:56,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 733 transitions, 17730 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 22:15:56,469 INFO L231 Difference]: Finished difference. Result has 345 places, 712 transitions, 16473 flow [2024-06-27 22:15:56,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=15973, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16473, PETRI_PLACES=345, PETRI_TRANSITIONS=712} [2024-06-27 22:15:56,469 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 305 predicate places. [2024-06-27 22:15:56,469 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 712 transitions, 16473 flow [2024-06-27 22:15:56,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:56,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:56,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:56,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:15:56,470 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:15:56,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1352403959, now seen corresponding path program 9 times [2024-06-27 22:15:56,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:56,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369726828] [2024-06-27 22:15:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:56,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:57,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:57,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369726828] [2024-06-27 22:15:57,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369726828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:57,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:57,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:15:57,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364484854] [2024-06-27 22:15:57,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:57,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:15:57,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:57,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:15:57,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:15:57,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:15:57,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 712 transitions, 16473 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:57,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:57,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:15:57,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:59,082 INFO L124 PetriNetUnfolderBase]: 2542/4234 cut-off events. [2024-06-27 22:15:59,082 INFO L125 PetriNetUnfolderBase]: For 241840/241840 co-relation queries the response was YES. [2024-06-27 22:15:59,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45545 conditions, 4234 events. 2542/4234 cut-off events. For 241840/241840 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 26256 event pairs, 534 based on Foata normal form. 1/4168 useless extension candidates. Maximal degree in co-relation 45381. Up to 3947 conditions per place. [2024-06-27 22:15:59,145 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 699 selfloop transitions, 38 changer transitions 0/743 dead transitions. [2024-06-27 22:15:59,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 743 transitions, 18306 flow [2024-06-27 22:15:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:59,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 22:15:59,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-27 22:15:59,147 INFO L175 Difference]: Start difference. First operand has 345 places, 712 transitions, 16473 flow. Second operand 8 states and 129 transitions. [2024-06-27 22:15:59,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 743 transitions, 18306 flow [2024-06-27 22:16:00,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 743 transitions, 17642 flow, removed 196 selfloop flow, removed 6 redundant places. [2024-06-27 22:16:00,171 INFO L231 Difference]: Finished difference. Result has 348 places, 724 transitions, 16217 flow [2024-06-27 22:16:00,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=15829, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16217, PETRI_PLACES=348, PETRI_TRANSITIONS=724} [2024-06-27 22:16:00,172 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 308 predicate places. [2024-06-27 22:16:00,172 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 724 transitions, 16217 flow [2024-06-27 22:16:00,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:00,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:00,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:00,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:16:00,172 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:00,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:00,173 INFO L85 PathProgramCache]: Analyzing trace with hash -399585177, now seen corresponding path program 10 times [2024-06-27 22:16:00,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:00,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948195955] [2024-06-27 22:16:00,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:00,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:01,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:01,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948195955] [2024-06-27 22:16:01,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948195955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:01,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:01,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:16:01,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191687292] [2024-06-27 22:16:01,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:01,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:16:01,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:01,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:16:01,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:16:01,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:16:01,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 724 transitions, 16217 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:01,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:01,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:16:01,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:02,822 INFO L124 PetriNetUnfolderBase]: 2542/4234 cut-off events. [2024-06-27 22:16:02,823 INFO L125 PetriNetUnfolderBase]: For 235366/235366 co-relation queries the response was YES. [2024-06-27 22:16:02,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44820 conditions, 4234 events. 2542/4234 cut-off events. For 235366/235366 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 26247 event pairs, 537 based on Foata normal form. 1/4168 useless extension candidates. Maximal degree in co-relation 44654. Up to 3929 conditions per place. [2024-06-27 22:16:02,879 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 694 selfloop transitions, 46 changer transitions 0/746 dead transitions. [2024-06-27 22:16:02,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 746 transitions, 17948 flow [2024-06-27 22:16:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:02,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 22:16:02,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 22:16:02,881 INFO L175 Difference]: Start difference. First operand has 348 places, 724 transitions, 16217 flow. Second operand 8 states and 133 transitions. [2024-06-27 22:16:02,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 746 transitions, 17948 flow [2024-06-27 22:16:03,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 746 transitions, 17689 flow, removed 105 selfloop flow, removed 4 redundant places. [2024-06-27 22:16:03,807 INFO L231 Difference]: Finished difference. Result has 352 places, 728 transitions, 16216 flow [2024-06-27 22:16:03,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=16012, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16216, PETRI_PLACES=352, PETRI_TRANSITIONS=728} [2024-06-27 22:16:03,808 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 312 predicate places. [2024-06-27 22:16:03,808 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 728 transitions, 16216 flow [2024-06-27 22:16:03,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:03,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:03,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:03,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 22:16:03,809 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:03,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:03,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1377846, now seen corresponding path program 5 times [2024-06-27 22:16:03,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:03,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913671494] [2024-06-27 22:16:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:03,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:04,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:04,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913671494] [2024-06-27 22:16:04,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913671494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:04,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:04,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:16:04,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814900035] [2024-06-27 22:16:04,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:04,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:16:04,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:04,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:16:04,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:16:04,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:16:04,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 728 transitions, 16216 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:04,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:04,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:16:04,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:06,307 INFO L124 PetriNetUnfolderBase]: 2479/4168 cut-off events. [2024-06-27 22:16:06,307 INFO L125 PetriNetUnfolderBase]: For 260435/260435 co-relation queries the response was YES. [2024-06-27 22:16:06,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45261 conditions, 4168 events. 2479/4168 cut-off events. For 260435/260435 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 26464 event pairs, 515 based on Foata normal form. 1/4081 useless extension candidates. Maximal degree in co-relation 45094. Up to 3651 conditions per place. [2024-06-27 22:16:06,375 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 692 selfloop transitions, 69 changer transitions 5/779 dead transitions. [2024-06-27 22:16:06,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 779 transitions, 18974 flow [2024-06-27 22:16:06,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:06,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 22:16:06,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:16:06,376 INFO L175 Difference]: Start difference. First operand has 352 places, 728 transitions, 16216 flow. Second operand 8 states and 156 transitions. [2024-06-27 22:16:06,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 779 transitions, 18974 flow [2024-06-27 22:16:07,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 779 transitions, 18808 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-27 22:16:07,404 INFO L231 Difference]: Finished difference. Result has 358 places, 745 transitions, 16963 flow [2024-06-27 22:16:07,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=16050, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16963, PETRI_PLACES=358, PETRI_TRANSITIONS=745} [2024-06-27 22:16:07,405 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 318 predicate places. [2024-06-27 22:16:07,405 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 745 transitions, 16963 flow [2024-06-27 22:16:07,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:07,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:07,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:07,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 22:16:07,406 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:07,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1370406, now seen corresponding path program 6 times [2024-06-27 22:16:07,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:07,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655265934] [2024-06-27 22:16:07,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:07,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:08,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:08,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655265934] [2024-06-27 22:16:08,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655265934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:08,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:08,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:16:08,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807575776] [2024-06-27 22:16:08,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:08,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:16:08,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:08,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:16:08,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:16:08,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:16:08,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 745 transitions, 16963 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:08,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:08,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:16:08,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:09,823 INFO L124 PetriNetUnfolderBase]: 2475/4162 cut-off events. [2024-06-27 22:16:09,823 INFO L125 PetriNetUnfolderBase]: For 277178/277178 co-relation queries the response was YES. [2024-06-27 22:16:09,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46422 conditions, 4162 events. 2475/4162 cut-off events. For 277178/277178 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 26447 event pairs, 506 based on Foata normal form. 2/4076 useless extension candidates. Maximal degree in co-relation 46252. Up to 3650 conditions per place. [2024-06-27 22:16:09,887 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 696 selfloop transitions, 71 changer transitions 5/785 dead transitions. [2024-06-27 22:16:09,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 785 transitions, 19291 flow [2024-06-27 22:16:09,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:09,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 22:16:09,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381944444444444 [2024-06-27 22:16:09,889 INFO L175 Difference]: Start difference. First operand has 358 places, 745 transitions, 16963 flow. Second operand 8 states and 155 transitions. [2024-06-27 22:16:09,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 785 transitions, 19291 flow [2024-06-27 22:16:11,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 785 transitions, 18571 flow, removed 319 selfloop flow, removed 3 redundant places. [2024-06-27 22:16:11,099 INFO L231 Difference]: Finished difference. Result has 365 places, 752 transitions, 16782 flow [2024-06-27 22:16:11,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=16381, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16782, PETRI_PLACES=365, PETRI_TRANSITIONS=752} [2024-06-27 22:16:11,100 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 325 predicate places. [2024-06-27 22:16:11,100 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 752 transitions, 16782 flow [2024-06-27 22:16:11,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:11,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:11,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:11,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 22:16:11,100 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:11,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:11,101 INFO L85 PathProgramCache]: Analyzing trace with hash 255130104, now seen corresponding path program 7 times [2024-06-27 22:16:11,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:11,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55061192] [2024-06-27 22:16:11,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:11,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:12,330 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 22:16:12,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:12,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55061192] [2024-06-27 22:16:12,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55061192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:12,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:12,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:12,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479268885] [2024-06-27 22:16:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:12,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:12,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:12,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:12,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:12,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:16:12,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 752 transitions, 16782 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 22:16:12,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:12,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:16:12,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:13,758 INFO L124 PetriNetUnfolderBase]: 2661/4442 cut-off events. [2024-06-27 22:16:13,758 INFO L125 PetriNetUnfolderBase]: For 319220/319220 co-relation queries the response was YES. [2024-06-27 22:16:13,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50372 conditions, 4442 events. 2661/4442 cut-off events. For 319220/319220 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 28287 event pairs, 453 based on Foata normal form. 4/4362 useless extension candidates. Maximal degree in co-relation 50200. Up to 3305 conditions per place. [2024-06-27 22:16:13,829 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 660 selfloop transitions, 127 changer transitions 5/806 dead transitions. [2024-06-27 22:16:13,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 806 transitions, 19926 flow [2024-06-27 22:16:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 22:16:13,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-06-27 22:16:13,830 INFO L175 Difference]: Start difference. First operand has 365 places, 752 transitions, 16782 flow. Second operand 8 states and 172 transitions. [2024-06-27 22:16:13,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 806 transitions, 19926 flow [2024-06-27 22:16:15,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 806 transitions, 19717 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-06-27 22:16:15,165 INFO L231 Difference]: Finished difference. Result has 370 places, 763 transitions, 17308 flow [2024-06-27 22:16:15,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=16573, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17308, PETRI_PLACES=370, PETRI_TRANSITIONS=763} [2024-06-27 22:16:15,166 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 330 predicate places. [2024-06-27 22:16:15,166 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 763 transitions, 17308 flow [2024-06-27 22:16:15,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 22:16:15,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:15,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:15,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 22:16:15,167 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:15,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:15,168 INFO L85 PathProgramCache]: Analyzing trace with hash 255122664, now seen corresponding path program 8 times [2024-06-27 22:16:15,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:15,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346141877] [2024-06-27 22:16:15,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:15,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:16,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:16,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346141877] [2024-06-27 22:16:16,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346141877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:16,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:16,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:16,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703310346] [2024-06-27 22:16:16,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:16,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:16,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:16,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:16,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:16:16,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 763 transitions, 17308 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 22:16:16,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:16,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:16:16,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:17,850 INFO L124 PetriNetUnfolderBase]: 2688/4484 cut-off events. [2024-06-27 22:16:17,851 INFO L125 PetriNetUnfolderBase]: For 328690/328690 co-relation queries the response was YES. [2024-06-27 22:16:17,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51735 conditions, 4484 events. 2688/4484 cut-off events. For 328690/328690 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 28594 event pairs, 442 based on Foata normal form. 2/4402 useless extension candidates. Maximal degree in co-relation 51561. Up to 3331 conditions per place. [2024-06-27 22:16:17,924 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 658 selfloop transitions, 135 changer transitions 5/812 dead transitions. [2024-06-27 22:16:17,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 812 transitions, 20301 flow [2024-06-27 22:16:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:17,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-27 22:16:17,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-27 22:16:17,925 INFO L175 Difference]: Start difference. First operand has 370 places, 763 transitions, 17308 flow. Second operand 8 states and 171 transitions. [2024-06-27 22:16:17,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 812 transitions, 20301 flow [2024-06-27 22:16:19,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 812 transitions, 19862 flow, removed 136 selfloop flow, removed 4 redundant places. [2024-06-27 22:16:19,277 INFO L231 Difference]: Finished difference. Result has 375 places, 770 transitions, 17452 flow [2024-06-27 22:16:19,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=16941, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17452, PETRI_PLACES=375, PETRI_TRANSITIONS=770} [2024-06-27 22:16:19,278 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 335 predicate places. [2024-06-27 22:16:19,278 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 770 transitions, 17452 flow [2024-06-27 22:16:19,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 22:16:19,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:19,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:19,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 22:16:19,279 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:19,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:19,279 INFO L85 PathProgramCache]: Analyzing trace with hash 255122447, now seen corresponding path program 11 times [2024-06-27 22:16:19,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:19,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135651474] [2024-06-27 22:16:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:19,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:20,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:20,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135651474] [2024-06-27 22:16:20,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135651474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:20,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:20,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:16:20,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726578670] [2024-06-27 22:16:20,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:20,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:16:20,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:16:20,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:16:20,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:16:20,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 770 transitions, 17452 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:20,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:20,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:16:20,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:22,350 INFO L124 PetriNetUnfolderBase]: 2894/4774 cut-off events. [2024-06-27 22:16:22,351 INFO L125 PetriNetUnfolderBase]: For 318677/318677 co-relation queries the response was YES. [2024-06-27 22:16:22,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54021 conditions, 4774 events. 2894/4774 cut-off events. For 318677/318677 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 29884 event pairs, 593 based on Foata normal form. 1/4708 useless extension candidates. Maximal degree in co-relation 53844. Up to 4364 conditions per place. [2024-06-27 22:16:22,427 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 694 selfloop transitions, 95 changer transitions 0/795 dead transitions. [2024-06-27 22:16:22,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 795 transitions, 19520 flow [2024-06-27 22:16:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:22,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 22:16:22,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-27 22:16:22,429 INFO L175 Difference]: Start difference. First operand has 375 places, 770 transitions, 17452 flow. Second operand 8 states and 137 transitions. [2024-06-27 22:16:22,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 795 transitions, 19520 flow [2024-06-27 22:16:23,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 795 transitions, 19098 flow, removed 92 selfloop flow, removed 5 redundant places. [2024-06-27 22:16:23,978 INFO L231 Difference]: Finished difference. Result has 378 places, 774 transitions, 17410 flow [2024-06-27 22:16:23,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=17090, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=678, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17410, PETRI_PLACES=378, PETRI_TRANSITIONS=774} [2024-06-27 22:16:23,979 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 338 predicate places. [2024-06-27 22:16:23,979 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 774 transitions, 17410 flow [2024-06-27 22:16:23,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:23,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:23,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:23,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 22:16:23,980 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:23,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:23,981 INFO L85 PathProgramCache]: Analyzing trace with hash 264326874, now seen corresponding path program 9 times [2024-06-27 22:16:23,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:23,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238641764] [2024-06-27 22:16:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:23,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:25,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:25,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238641764] [2024-06-27 22:16:25,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238641764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:25,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:25,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:16:25,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832985901] [2024-06-27 22:16:25,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:25,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:16:25,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:25,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:16:25,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:16:25,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:16:25,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 774 transitions, 17410 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:25,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:25,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:16:25,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:27,090 INFO L124 PetriNetUnfolderBase]: 2906/4797 cut-off events. [2024-06-27 22:16:27,091 INFO L125 PetriNetUnfolderBase]: For 322802/322802 co-relation queries the response was YES. [2024-06-27 22:16:27,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53810 conditions, 4797 events. 2906/4797 cut-off events. For 322802/322802 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 30069 event pairs, 739 based on Foata normal form. 2/4732 useless extension candidates. Maximal degree in co-relation 53632. Up to 4439 conditions per place. [2024-06-27 22:16:27,168 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 774 selfloop transitions, 32 changer transitions 0/812 dead transitions. [2024-06-27 22:16:27,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 812 transitions, 19999 flow [2024-06-27 22:16:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:27,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 22:16:27,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2024-06-27 22:16:27,169 INFO L175 Difference]: Start difference. First operand has 378 places, 774 transitions, 17410 flow. Second operand 9 states and 149 transitions. [2024-06-27 22:16:27,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 812 transitions, 19999 flow [2024-06-27 22:16:28,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 812 transitions, 19744 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 22:16:28,631 INFO L231 Difference]: Finished difference. Result has 383 places, 785 transitions, 17699 flow [2024-06-27 22:16:28,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=17155, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17699, PETRI_PLACES=383, PETRI_TRANSITIONS=785} [2024-06-27 22:16:28,632 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 343 predicate places. [2024-06-27 22:16:28,632 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 785 transitions, 17699 flow [2024-06-27 22:16:28,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:28,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:28,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:28,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 22:16:28,633 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:28,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:28,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1579656, now seen corresponding path program 10 times [2024-06-27 22:16:28,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:28,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869771329] [2024-06-27 22:16:28,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:28,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:29,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:29,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869771329] [2024-06-27 22:16:29,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869771329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:29,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:29,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:29,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876177479] [2024-06-27 22:16:29,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:29,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:29,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:29,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:29,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:29,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:16:29,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 785 transitions, 17699 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 22:16:29,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:29,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:16:29,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:31,101 INFO L124 PetriNetUnfolderBase]: 2732/4541 cut-off events. [2024-06-27 22:16:31,102 INFO L125 PetriNetUnfolderBase]: For 325837/325837 co-relation queries the response was YES. [2024-06-27 22:16:31,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52198 conditions, 4541 events. 2732/4541 cut-off events. For 325837/325837 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 28818 event pairs, 298 based on Foata normal form. 2/4463 useless extension candidates. Maximal degree in co-relation 52019. Up to 3467 conditions per place. [2024-06-27 22:16:31,176 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 574 selfloop transitions, 239 changer transitions 5/832 dead transitions. [2024-06-27 22:16:31,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 832 transitions, 20472 flow [2024-06-27 22:16:31,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-06-27 22:16:31,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-06-27 22:16:31,178 INFO L175 Difference]: Start difference. First operand has 383 places, 785 transitions, 17699 flow. Second operand 8 states and 166 transitions. [2024-06-27 22:16:31,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 832 transitions, 20472 flow [2024-06-27 22:16:32,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 832 transitions, 20235 flow, removed 107 selfloop flow, removed 5 redundant places. [2024-06-27 22:16:32,703 INFO L231 Difference]: Finished difference. Result has 389 places, 797 transitions, 18693 flow [2024-06-27 22:16:32,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=17462, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18693, PETRI_PLACES=389, PETRI_TRANSITIONS=797} [2024-06-27 22:16:32,704 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 349 predicate places. [2024-06-27 22:16:32,704 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 797 transitions, 18693 flow [2024-06-27 22:16:32,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 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 22:16:32,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:32,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:32,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 22:16:32,705 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:32,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:32,706 INFO L85 PathProgramCache]: Analyzing trace with hash -399792567, now seen corresponding path program 12 times [2024-06-27 22:16:32,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:32,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383683389] [2024-06-27 22:16:32,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:32,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:33,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:33,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383683389] [2024-06-27 22:16:33,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383683389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:33,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:33,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:33,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686412019] [2024-06-27 22:16:33,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:33,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:33,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:33,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:33,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:16:33,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 797 transitions, 18693 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:33,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:33,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:16:33,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:35,579 INFO L124 PetriNetUnfolderBase]: 2954/4877 cut-off events. [2024-06-27 22:16:35,579 INFO L125 PetriNetUnfolderBase]: For 344648/344648 co-relation queries the response was YES. [2024-06-27 22:16:35,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56535 conditions, 4877 events. 2954/4877 cut-off events. For 344648/344648 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 30618 event pairs, 401 based on Foata normal form. 1/4802 useless extension candidates. Maximal degree in co-relation 56351. Up to 3993 conditions per place. [2024-06-27 22:16:35,663 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 565 selfloop transitions, 260 changer transitions 4/835 dead transitions. [2024-06-27 22:16:35,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 835 transitions, 20887 flow [2024-06-27 22:16:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:35,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 22:16:35,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243055555555556 [2024-06-27 22:16:35,664 INFO L175 Difference]: Start difference. First operand has 389 places, 797 transitions, 18693 flow. Second operand 8 states and 151 transitions. [2024-06-27 22:16:35,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 835 transitions, 20887 flow [2024-06-27 22:16:37,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 835 transitions, 20274 flow, removed 276 selfloop flow, removed 1 redundant places. [2024-06-27 22:16:37,564 INFO L231 Difference]: Finished difference. Result has 397 places, 806 transitions, 19008 flow [2024-06-27 22:16:37,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18260, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19008, PETRI_PLACES=397, PETRI_TRANSITIONS=806} [2024-06-27 22:16:37,565 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 357 predicate places. [2024-06-27 22:16:37,566 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 806 transitions, 19008 flow [2024-06-27 22:16:37,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:37,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:37,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:37,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 22:16:37,570 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:37,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:37,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1585608, now seen corresponding path program 9 times [2024-06-27 22:16:37,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:37,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528278793] [2024-06-27 22:16:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:37,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:38,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:38,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528278793] [2024-06-27 22:16:38,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528278793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:38,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:38,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:16:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569059271] [2024-06-27 22:16:38,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:38,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:16:38,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:16:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:16:38,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:16:38,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 806 transitions, 19008 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:38,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:38,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:16:38,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:40,317 INFO L124 PetriNetUnfolderBase]: 2954/4856 cut-off events. [2024-06-27 22:16:40,318 INFO L125 PetriNetUnfolderBase]: For 337427/337427 co-relation queries the response was YES. [2024-06-27 22:16:40,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56123 conditions, 4856 events. 2954/4856 cut-off events. For 337427/337427 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 30240 event pairs, 524 based on Foata normal form. 2/4789 useless extension candidates. Maximal degree in co-relation 55935. Up to 4295 conditions per place. [2024-06-27 22:16:40,402 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 623 selfloop transitions, 201 changer transitions 0/830 dead transitions. [2024-06-27 22:16:40,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 830 transitions, 20991 flow [2024-06-27 22:16:40,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:40,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 22:16:40,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-27 22:16:40,404 INFO L175 Difference]: Start difference. First operand has 397 places, 806 transitions, 19008 flow. Second operand 9 states and 148 transitions. [2024-06-27 22:16:40,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 830 transitions, 20991 flow [2024-06-27 22:16:42,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 830 transitions, 20421 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 22:16:42,020 INFO L231 Difference]: Finished difference. Result has 401 places, 809 transitions, 19062 flow [2024-06-27 22:16:42,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18438, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19062, PETRI_PLACES=401, PETRI_TRANSITIONS=809} [2024-06-27 22:16:42,021 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 361 predicate places. [2024-06-27 22:16:42,021 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 809 transitions, 19062 flow [2024-06-27 22:16:42,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:42,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:42,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:42,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 22:16:42,022 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:42,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:42,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1269206592, now seen corresponding path program 1 times [2024-06-27 22:16:42,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:42,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388665117] [2024-06-27 22:16:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:42,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:42,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:42,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388665117] [2024-06-27 22:16:42,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388665117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:42,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:42,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:16:42,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661943311] [2024-06-27 22:16:42,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:42,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:16:42,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:42,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:16:42,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:16:42,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-06-27 22:16:42,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 809 transitions, 19062 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:42,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:42,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-06-27 22:16:42,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:43,794 INFO L124 PetriNetUnfolderBase]: 2869/4849 cut-off events. [2024-06-27 22:16:43,794 INFO L125 PetriNetUnfolderBase]: For 355998/356273 co-relation queries the response was YES. [2024-06-27 22:16:43,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55504 conditions, 4849 events. 2869/4849 cut-off events. For 355998/356273 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 31058 event pairs, 316 based on Foata normal form. 168/4929 useless extension candidates. Maximal degree in co-relation 55316. Up to 1623 conditions per place. [2024-06-27 22:16:44,006 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 362 selfloop transitions, 110 changer transitions 310/991 dead transitions. [2024-06-27 22:16:44,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 991 transitions, 24405 flow [2024-06-27 22:16:44,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:44,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:44,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-27 22:16:44,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-27 22:16:44,008 INFO L175 Difference]: Start difference. First operand has 401 places, 809 transitions, 19062 flow. Second operand 8 states and 171 transitions. [2024-06-27 22:16:44,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 991 transitions, 24405 flow [2024-06-27 22:16:45,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 991 transitions, 23793 flow, removed 107 selfloop flow, removed 7 redundant places. [2024-06-27 22:16:45,633 INFO L231 Difference]: Finished difference. Result has 407 places, 663 transitions, 15249 flow [2024-06-27 22:16:45,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18450, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=809, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=700, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15249, PETRI_PLACES=407, PETRI_TRANSITIONS=663} [2024-06-27 22:16:45,634 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 367 predicate places. [2024-06-27 22:16:45,634 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 663 transitions, 15249 flow [2024-06-27 22:16:45,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:45,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:45,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:45,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 22:16:45,635 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:45,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:45,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1621171187, now seen corresponding path program 1 times [2024-06-27 22:16:45,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:45,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45001696] [2024-06-27 22:16:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:45,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:46,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:46,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45001696] [2024-06-27 22:16:46,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45001696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:46,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:46,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:16:46,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386414086] [2024-06-27 22:16:46,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:46,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:16:46,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:46,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:16:46,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:16:46,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:16:46,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 663 transitions, 15249 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:46,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:46,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:16:46,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:48,139 INFO L124 PetriNetUnfolderBase]: 1958/3390 cut-off events. [2024-06-27 22:16:48,140 INFO L125 PetriNetUnfolderBase]: For 288563/288694 co-relation queries the response was YES. [2024-06-27 22:16:48,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40973 conditions, 3390 events. 1958/3390 cut-off events. For 288563/288694 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 21108 event pairs, 158 based on Foata normal form. 65/3446 useless extension candidates. Maximal degree in co-relation 40779. Up to 2230 conditions per place. [2024-06-27 22:16:48,212 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 429 selfloop transitions, 96 changer transitions 47/713 dead transitions. [2024-06-27 22:16:48,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 713 transitions, 17060 flow [2024-06-27 22:16:48,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-27 22:16:48,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-06-27 22:16:48,213 INFO L175 Difference]: Start difference. First operand has 407 places, 663 transitions, 15249 flow. Second operand 9 states and 177 transitions. [2024-06-27 22:16:48,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 713 transitions, 17060 flow [2024-06-27 22:16:49,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 713 transitions, 15608 flow, removed 62 selfloop flow, removed 33 redundant places. [2024-06-27 22:16:49,554 INFO L231 Difference]: Finished difference. Result has 380 places, 626 transitions, 13411 flow [2024-06-27 22:16:49,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13819, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13411, PETRI_PLACES=380, PETRI_TRANSITIONS=626} [2024-06-27 22:16:49,555 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 340 predicate places. [2024-06-27 22:16:49,555 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 626 transitions, 13411 flow [2024-06-27 22:16:49,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:49,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:49,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:49,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 22:16:49,556 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:49,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1015644845, now seen corresponding path program 1 times [2024-06-27 22:16:49,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:49,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619195842] [2024-06-27 22:16:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:49,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:50,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619195842] [2024-06-27 22:16:50,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619195842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:50,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:50,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:16:50,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027476832] [2024-06-27 22:16:50,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:50,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:16:50,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:50,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:16:50,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:16:50,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:16:50,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 626 transitions, 13411 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:50,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:50,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:16:50,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:51,862 INFO L124 PetriNetUnfolderBase]: 1888/3208 cut-off events. [2024-06-27 22:16:51,862 INFO L125 PetriNetUnfolderBase]: For 263571/263571 co-relation queries the response was YES. [2024-06-27 22:16:51,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38065 conditions, 3208 events. 1888/3208 cut-off events. For 263571/263571 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 19239 event pairs, 319 based on Foata normal form. 2/3195 useless extension candidates. Maximal degree in co-relation 37886. Up to 2443 conditions per place. [2024-06-27 22:16:51,928 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 493 selfloop transitions, 158 changer transitions 3/668 dead transitions. [2024-06-27 22:16:51,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 668 transitions, 15597 flow [2024-06-27 22:16:51,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 22:16:51,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:16:51,930 INFO L175 Difference]: Start difference. First operand has 380 places, 626 transitions, 13411 flow. Second operand 8 states and 156 transitions. [2024-06-27 22:16:51,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 668 transitions, 15597 flow [2024-06-27 22:16:53,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 668 transitions, 14767 flow, removed 18 selfloop flow, removed 32 redundant places. [2024-06-27 22:16:53,031 INFO L231 Difference]: Finished difference. Result has 356 places, 636 transitions, 13444 flow [2024-06-27 22:16:53,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12626, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13444, PETRI_PLACES=356, PETRI_TRANSITIONS=636} [2024-06-27 22:16:53,032 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 316 predicate places. [2024-06-27 22:16:53,032 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 636 transitions, 13444 flow [2024-06-27 22:16:53,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:53,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:53,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:53,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 22:16:53,033 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:53,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:53,033 INFO L85 PathProgramCache]: Analyzing trace with hash 243173149, now seen corresponding path program 2 times [2024-06-27 22:16:53,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:53,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246563371] [2024-06-27 22:16:53,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:53,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:54,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:54,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:54,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246563371] [2024-06-27 22:16:54,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246563371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:54,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:54,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:54,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972775689] [2024-06-27 22:16:54,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:54,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:54,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:54,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:54,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:54,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:16:54,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 636 transitions, 13444 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:54,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:54,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:16:54,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:55,555 INFO L124 PetriNetUnfolderBase]: 2043/3408 cut-off events. [2024-06-27 22:16:55,556 INFO L125 PetriNetUnfolderBase]: For 261384/261384 co-relation queries the response was YES. [2024-06-27 22:16:55,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39543 conditions, 3408 events. 2043/3408 cut-off events. For 261384/261384 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20170 event pairs, 230 based on Foata normal form. 2/3367 useless extension candidates. Maximal degree in co-relation 39374. Up to 3058 conditions per place. [2024-06-27 22:16:55,606 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 572 selfloop transitions, 89 changer transitions 0/667 dead transitions. [2024-06-27 22:16:55,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 667 transitions, 14994 flow [2024-06-27 22:16:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 22:16:55,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-27 22:16:55,607 INFO L175 Difference]: Start difference. First operand has 356 places, 636 transitions, 13444 flow. Second operand 9 states and 152 transitions. [2024-06-27 22:16:55,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 667 transitions, 14994 flow [2024-06-27 22:16:56,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 667 transitions, 14792 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 22:16:56,614 INFO L231 Difference]: Finished difference. Result has 360 places, 638 transitions, 13569 flow [2024-06-27 22:16:56,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13244, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13569, PETRI_PLACES=360, PETRI_TRANSITIONS=638} [2024-06-27 22:16:56,615 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 320 predicate places. [2024-06-27 22:16:56,615 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 638 transitions, 13569 flow [2024-06-27 22:16:56,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:56,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:56,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:56,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 22:16:56,616 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:16:56,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:56,616 INFO L85 PathProgramCache]: Analyzing trace with hash 243321949, now seen corresponding path program 3 times [2024-06-27 22:16:56,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:56,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650532225] [2024-06-27 22:16:56,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:56,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:57,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:57,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:57,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650532225] [2024-06-27 22:16:57,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650532225] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:57,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:57,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:16:57,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931328536] [2024-06-27 22:16:57,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:57,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:16:57,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:57,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:16:57,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:16:57,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:16:57,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 638 transitions, 13569 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:57,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:57,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:16:57,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:59,229 INFO L124 PetriNetUnfolderBase]: 2067/3450 cut-off events. [2024-06-27 22:16:59,230 INFO L125 PetriNetUnfolderBase]: For 271346/271346 co-relation queries the response was YES. [2024-06-27 22:16:59,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40166 conditions, 3450 events. 2067/3450 cut-off events. For 271346/271346 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 20476 event pairs, 232 based on Foata normal form. 2/3409 useless extension candidates. Maximal degree in co-relation 39997. Up to 3075 conditions per place. [2024-06-27 22:16:59,278 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 563 selfloop transitions, 101 changer transitions 0/670 dead transitions. [2024-06-27 22:16:59,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 670 transitions, 15165 flow [2024-06-27 22:16:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 22:16:59,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 22:16:59,280 INFO L175 Difference]: Start difference. First operand has 360 places, 638 transitions, 13569 flow. Second operand 9 states and 153 transitions. [2024-06-27 22:16:59,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 670 transitions, 15165 flow [2024-06-27 22:17:00,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 670 transitions, 14860 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-27 22:17:00,397 INFO L231 Difference]: Finished difference. Result has 362 places, 641 transitions, 13659 flow [2024-06-27 22:17:00,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13264, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13659, PETRI_PLACES=362, PETRI_TRANSITIONS=641} [2024-06-27 22:17:00,398 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 322 predicate places. [2024-06-27 22:17:00,398 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 641 transitions, 13659 flow [2024-06-27 22:17:00,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:00,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:00,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:00,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 22:17:00,399 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:00,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:00,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1171970905, now seen corresponding path program 4 times [2024-06-27 22:17:00,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:00,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400342599] [2024-06-27 22:17:00,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:00,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:01,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:01,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400342599] [2024-06-27 22:17:01,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400342599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:01,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:01,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49550943] [2024-06-27 22:17:01,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:01,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:01,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:01,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:17:01,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 641 transitions, 13659 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:01,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:01,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:17:01,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:03,010 INFO L124 PetriNetUnfolderBase]: 2091/3486 cut-off events. [2024-06-27 22:17:03,010 INFO L125 PetriNetUnfolderBase]: For 286293/286293 co-relation queries the response was YES. [2024-06-27 22:17:03,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40890 conditions, 3486 events. 2091/3486 cut-off events. For 286293/286293 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 20682 event pairs, 293 based on Foata normal form. 2/3445 useless extension candidates. Maximal degree in co-relation 40720. Up to 3093 conditions per place. [2024-06-27 22:17:03,065 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 603 selfloop transitions, 68 changer transitions 0/677 dead transitions. [2024-06-27 22:17:03,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 677 transitions, 15369 flow [2024-06-27 22:17:03,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:17:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:17:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:17:03,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 22:17:03,067 INFO L175 Difference]: Start difference. First operand has 362 places, 641 transitions, 13659 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:17:03,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 677 transitions, 15369 flow [2024-06-27 22:17:04,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 677 transitions, 15033 flow, removed 83 selfloop flow, removed 6 redundant places. [2024-06-27 22:17:04,254 INFO L231 Difference]: Finished difference. Result has 366 places, 644 transitions, 13635 flow [2024-06-27 22:17:04,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13323, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13635, PETRI_PLACES=366, PETRI_TRANSITIONS=644} [2024-06-27 22:17:04,255 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 326 predicate places. [2024-06-27 22:17:04,255 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 644 transitions, 13635 flow [2024-06-27 22:17:04,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:04,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:04,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:04,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 22:17:04,255 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:04,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1143304405, now seen corresponding path program 5 times [2024-06-27 22:17:04,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:04,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172934953] [2024-06-27 22:17:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:04,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:05,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:05,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172934953] [2024-06-27 22:17:05,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172934953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:05,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:05,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:05,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912981823] [2024-06-27 22:17:05,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:05,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:05,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:05,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:05,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:05,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:17:05,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 644 transitions, 13635 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:05,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:05,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:17:05,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:07,091 INFO L124 PetriNetUnfolderBase]: 2131/3551 cut-off events. [2024-06-27 22:17:07,091 INFO L125 PetriNetUnfolderBase]: For 296023/296023 co-relation queries the response was YES. [2024-06-27 22:17:07,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41619 conditions, 3551 events. 2131/3551 cut-off events. For 296023/296023 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 21127 event pairs, 316 based on Foata normal form. 2/3510 useless extension candidates. Maximal degree in co-relation 41447. Up to 3131 conditions per place. [2024-06-27 22:17:07,152 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 575 selfloop transitions, 112 changer transitions 0/693 dead transitions. [2024-06-27 22:17:07,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 693 transitions, 15804 flow [2024-06-27 22:17:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:07,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:17:07,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 22:17:07,155 INFO L175 Difference]: Start difference. First operand has 366 places, 644 transitions, 13635 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:17:07,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 693 transitions, 15804 flow [2024-06-27 22:17:08,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 693 transitions, 15554 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-27 22:17:08,420 INFO L231 Difference]: Finished difference. Result has 369 places, 656 transitions, 14159 flow [2024-06-27 22:17:08,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13385, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14159, PETRI_PLACES=369, PETRI_TRANSITIONS=656} [2024-06-27 22:17:08,421 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 329 predicate places. [2024-06-27 22:17:08,421 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 656 transitions, 14159 flow [2024-06-27 22:17:08,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:08,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:08,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:08,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 22:17:08,421 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:08,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:08,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1060192165, now seen corresponding path program 6 times [2024-06-27 22:17:08,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:08,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681271438] [2024-06-27 22:17:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:08,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:09,647 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 22:17:09,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:09,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681271438] [2024-06-27 22:17:09,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681271438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:09,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:09,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:09,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079011530] [2024-06-27 22:17:09,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:09,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:09,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:09,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:09,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:09,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:17:09,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 656 transitions, 14159 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:09,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:09,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:17:09,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:11,069 INFO L124 PetriNetUnfolderBase]: 2175/3627 cut-off events. [2024-06-27 22:17:11,070 INFO L125 PetriNetUnfolderBase]: For 306742/306742 co-relation queries the response was YES. [2024-06-27 22:17:11,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42636 conditions, 3627 events. 2175/3627 cut-off events. For 306742/306742 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 21733 event pairs, 326 based on Foata normal form. 2/3586 useless extension candidates. Maximal degree in co-relation 42462. Up to 3257 conditions per place. [2024-06-27 22:17:11,127 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 602 selfloop transitions, 86 changer transitions 0/694 dead transitions. [2024-06-27 22:17:11,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 694 transitions, 15951 flow [2024-06-27 22:17:11,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:17:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:17:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 22:17:11,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 22:17:11,129 INFO L175 Difference]: Start difference. First operand has 369 places, 656 transitions, 14159 flow. Second operand 10 states and 162 transitions. [2024-06-27 22:17:11,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 694 transitions, 15951 flow [2024-06-27 22:17:12,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 694 transitions, 15649 flow, removed 118 selfloop flow, removed 4 redundant places. [2024-06-27 22:17:12,347 INFO L231 Difference]: Finished difference. Result has 376 places, 664 transitions, 14287 flow [2024-06-27 22:17:12,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=13857, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14287, PETRI_PLACES=376, PETRI_TRANSITIONS=664} [2024-06-27 22:17:12,348 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 336 predicate places. [2024-06-27 22:17:12,348 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 664 transitions, 14287 flow [2024-06-27 22:17:12,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:12,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:12,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:12,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 22:17:12,348 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:12,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash 211733663, now seen corresponding path program 7 times [2024-06-27 22:17:12,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:12,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914570322] [2024-06-27 22:17:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:12,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:13,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:13,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914570322] [2024-06-27 22:17:13,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914570322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:13,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:13,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:13,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283468203] [2024-06-27 22:17:13,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:13,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:13,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:13,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:13,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:13,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:17:13,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 664 transitions, 14287 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:13,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:13,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:17:13,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:15,316 INFO L124 PetriNetUnfolderBase]: 2197/3666 cut-off events. [2024-06-27 22:17:15,316 INFO L125 PetriNetUnfolderBase]: For 312246/312246 co-relation queries the response was YES. [2024-06-27 22:17:15,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43038 conditions, 3666 events. 2197/3666 cut-off events. For 312246/312246 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 22061 event pairs, 336 based on Foata normal form. 2/3625 useless extension candidates. Maximal degree in co-relation 42860. Up to 3300 conditions per place. [2024-06-27 22:17:15,369 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 608 selfloop transitions, 85 changer transitions 0/699 dead transitions. [2024-06-27 22:17:15,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 699 transitions, 16021 flow [2024-06-27 22:17:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 22:17:15,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 22:17:15,370 INFO L175 Difference]: Start difference. First operand has 376 places, 664 transitions, 14287 flow. Second operand 9 states and 153 transitions. [2024-06-27 22:17:15,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 699 transitions, 16021 flow [2024-06-27 22:17:16,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 699 transitions, 15748 flow, removed 70 selfloop flow, removed 6 redundant places. [2024-06-27 22:17:16,486 INFO L231 Difference]: Finished difference. Result has 380 places, 670 transitions, 14466 flow [2024-06-27 22:17:16,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14014, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14466, PETRI_PLACES=380, PETRI_TRANSITIONS=670} [2024-06-27 22:17:16,487 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 340 predicate places. [2024-06-27 22:17:16,487 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 670 transitions, 14466 flow [2024-06-27 22:17:16,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:16,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:16,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:16,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 22:17:16,488 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:16,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:16,488 INFO L85 PathProgramCache]: Analyzing trace with hash 170707739, now seen corresponding path program 8 times [2024-06-27 22:17:16,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:16,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996099976] [2024-06-27 22:17:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:16,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:18,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:18,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996099976] [2024-06-27 22:17:18,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996099976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:18,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:18,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:18,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103921870] [2024-06-27 22:17:18,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:18,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:18,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:18,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:18,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:18,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:17:18,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 670 transitions, 14466 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:18,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:18,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:17:18,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:19,496 INFO L124 PetriNetUnfolderBase]: 2245/3743 cut-off events. [2024-06-27 22:17:19,496 INFO L125 PetriNetUnfolderBase]: For 323961/323961 co-relation queries the response was YES. [2024-06-27 22:17:19,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43914 conditions, 3743 events. 2245/3743 cut-off events. For 323961/323961 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 22629 event pairs, 349 based on Foata normal form. 2/3702 useless extension candidates. Maximal degree in co-relation 43735. Up to 3348 conditions per place. [2024-06-27 22:17:19,561 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 614 selfloop transitions, 102 changer transitions 0/722 dead transitions. [2024-06-27 22:17:19,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 722 transitions, 16699 flow [2024-06-27 22:17:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:19,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 22:17:19,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2024-06-27 22:17:19,564 INFO L175 Difference]: Start difference. First operand has 380 places, 670 transitions, 14466 flow. Second operand 9 states and 155 transitions. [2024-06-27 22:17:19,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 722 transitions, 16699 flow [2024-06-27 22:17:20,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 722 transitions, 16340 flow, removed 118 selfloop flow, removed 5 redundant places. [2024-06-27 22:17:20,967 INFO L231 Difference]: Finished difference. Result has 385 places, 692 transitions, 15061 flow [2024-06-27 22:17:20,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14107, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15061, PETRI_PLACES=385, PETRI_TRANSITIONS=692} [2024-06-27 22:17:20,968 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 345 predicate places. [2024-06-27 22:17:20,968 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 692 transitions, 15061 flow [2024-06-27 22:17:20,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:20,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:20,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:20,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 22:17:20,969 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:20,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:20,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1748958911, now seen corresponding path program 9 times [2024-06-27 22:17:20,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:20,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382897140] [2024-06-27 22:17:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:20,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:22,321 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 22:17:22,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:22,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382897140] [2024-06-27 22:17:22,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382897140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:22,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:22,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:17:22,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551499297] [2024-06-27 22:17:22,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:22,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:17:22,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:17:22,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:17:22,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:17:22,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 692 transitions, 15061 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:22,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:22,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:17:22,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:23,763 INFO L124 PetriNetUnfolderBase]: 2260/3768 cut-off events. [2024-06-27 22:17:23,763 INFO L125 PetriNetUnfolderBase]: For 335591/335591 co-relation queries the response was YES. [2024-06-27 22:17:23,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44404 conditions, 3768 events. 2260/3768 cut-off events. For 335591/335591 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 22777 event pairs, 331 based on Foata normal form. 2/3726 useless extension candidates. Maximal degree in co-relation 44223. Up to 3321 conditions per place. [2024-06-27 22:17:23,830 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 584 selfloop transitions, 134 changer transitions 0/724 dead transitions. [2024-06-27 22:17:23,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 724 transitions, 16838 flow [2024-06-27 22:17:23,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:17:23,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-27 22:17:23,831 INFO L175 Difference]: Start difference. First operand has 385 places, 692 transitions, 15061 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:17:23,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 724 transitions, 16838 flow [2024-06-27 22:17:25,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 724 transitions, 16432 flow, removed 155 selfloop flow, removed 5 redundant places. [2024-06-27 22:17:25,204 INFO L231 Difference]: Finished difference. Result has 389 places, 695 transitions, 15178 flow [2024-06-27 22:17:25,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14655, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15178, PETRI_PLACES=389, PETRI_TRANSITIONS=695} [2024-06-27 22:17:25,205 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 349 predicate places. [2024-06-27 22:17:25,205 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 695 transitions, 15178 flow [2024-06-27 22:17:25,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:25,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:25,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:25,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 22:17:25,206 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:25,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:25,206 INFO L85 PathProgramCache]: Analyzing trace with hash -481497083, now seen corresponding path program 10 times [2024-06-27 22:17:25,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:25,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988943150] [2024-06-27 22:17:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:25,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:26,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988943150] [2024-06-27 22:17:26,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988943150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:26,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:26,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403414176] [2024-06-27 22:17:26,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:26,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:26,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:26,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:26,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:26,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:17:26,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 695 transitions, 15178 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:26,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:26,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:17:26,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:27,908 INFO L124 PetriNetUnfolderBase]: 2275/3793 cut-off events. [2024-06-27 22:17:27,909 INFO L125 PetriNetUnfolderBase]: For 337407/337407 co-relation queries the response was YES. [2024-06-27 22:17:27,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44659 conditions, 3793 events. 2275/3793 cut-off events. For 337407/337407 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 22967 event pairs, 341 based on Foata normal form. 2/3751 useless extension candidates. Maximal degree in co-relation 44476. Up to 3324 conditions per place. [2024-06-27 22:17:27,975 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 579 selfloop transitions, 144 changer transitions 0/729 dead transitions. [2024-06-27 22:17:27,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 729 transitions, 17133 flow [2024-06-27 22:17:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:27,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:17:27,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 22:17:27,977 INFO L175 Difference]: Start difference. First operand has 389 places, 695 transitions, 15178 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:17:27,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 729 transitions, 17133 flow [2024-06-27 22:17:29,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 729 transitions, 16721 flow, removed 118 selfloop flow, removed 6 redundant places. [2024-06-27 22:17:29,475 INFO L231 Difference]: Finished difference. Result has 392 places, 697 transitions, 15215 flow [2024-06-27 22:17:29,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14766, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15215, PETRI_PLACES=392, PETRI_TRANSITIONS=697} [2024-06-27 22:17:29,476 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 352 predicate places. [2024-06-27 22:17:29,476 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 697 transitions, 15215 flow [2024-06-27 22:17:29,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:29,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:29,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:29,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 22:17:29,477 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:29,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:29,478 INFO L85 PathProgramCache]: Analyzing trace with hash -475067993, now seen corresponding path program 11 times [2024-06-27 22:17:29,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:29,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136330322] [2024-06-27 22:17:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:29,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:31,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:31,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136330322] [2024-06-27 22:17:31,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136330322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:31,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:31,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:31,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119919734] [2024-06-27 22:17:31,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:31,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:31,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:31,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:31,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:31,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:17:31,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 697 transitions, 15215 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:31,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:31,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:17:31,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:32,519 INFO L124 PetriNetUnfolderBase]: 2290/3826 cut-off events. [2024-06-27 22:17:32,519 INFO L125 PetriNetUnfolderBase]: For 343884/343884 co-relation queries the response was YES. [2024-06-27 22:17:32,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44950 conditions, 3826 events. 2290/3826 cut-off events. For 343884/343884 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 23363 event pairs, 457 based on Foata normal form. 2/3785 useless extension candidates. Maximal degree in co-relation 44766. Up to 3577 conditions per place. [2024-06-27 22:17:32,579 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 666 selfloop transitions, 57 changer transitions 0/729 dead transitions. [2024-06-27 22:17:32,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 729 transitions, 17135 flow [2024-06-27 22:17:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:32,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 22:17:32,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-27 22:17:32,581 INFO L175 Difference]: Start difference. First operand has 392 places, 697 transitions, 15215 flow. Second operand 9 states and 152 transitions. [2024-06-27 22:17:32,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 729 transitions, 17135 flow [2024-06-27 22:17:33,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 729 transitions, 16744 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-27 22:17:33,936 INFO L231 Difference]: Finished difference. Result has 394 places, 700 transitions, 15204 flow [2024-06-27 22:17:33,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14824, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15204, PETRI_PLACES=394, PETRI_TRANSITIONS=700} [2024-06-27 22:17:33,937 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 354 predicate places. [2024-06-27 22:17:33,937 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 700 transitions, 15204 flow [2024-06-27 22:17:33,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:33,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:33,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:33,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 22:17:33,938 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:33,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:33,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1742518227, now seen corresponding path program 1 times [2024-06-27 22:17:33,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:33,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101115498] [2024-06-27 22:17:33,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:33,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:35,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:35,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:35,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101115498] [2024-06-27 22:17:35,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101115498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:35,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:35,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:35,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222082098] [2024-06-27 22:17:35,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:35,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:35,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:35,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:35,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:35,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:17:35,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 700 transitions, 15204 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:35,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:35,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:17:35,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:37,003 INFO L124 PetriNetUnfolderBase]: 2101/3560 cut-off events. [2024-06-27 22:17:37,004 INFO L125 PetriNetUnfolderBase]: For 343464/343464 co-relation queries the response was YES. [2024-06-27 22:17:37,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42320 conditions, 3560 events. 2101/3560 cut-off events. For 343464/343464 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 22198 event pairs, 410 based on Foata normal form. 2/3498 useless extension candidates. Maximal degree in co-relation 42135. Up to 3110 conditions per place. [2024-06-27 22:17:37,069 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 627 selfloop transitions, 96 changer transitions 0/736 dead transitions. [2024-06-27 22:17:37,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 736 transitions, 17524 flow [2024-06-27 22:17:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:37,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:17:37,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-27 22:17:37,070 INFO L175 Difference]: Start difference. First operand has 394 places, 700 transitions, 15204 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:17:37,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 736 transitions, 17524 flow [2024-06-27 22:17:38,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 736 transitions, 17170 flow, removed 123 selfloop flow, removed 7 redundant places. [2024-06-27 22:17:38,329 INFO L231 Difference]: Finished difference. Result has 398 places, 710 transitions, 15416 flow [2024-06-27 22:17:38,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=14850, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15416, PETRI_PLACES=398, PETRI_TRANSITIONS=710} [2024-06-27 22:17:38,330 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 358 predicate places. [2024-06-27 22:17:38,330 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 710 transitions, 15416 flow [2024-06-27 22:17:38,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:38,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:38,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:38,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 22:17:38,331 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:38,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:38,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1742287587, now seen corresponding path program 2 times [2024-06-27 22:17:38,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:38,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522180448] [2024-06-27 22:17:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:38,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:39,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:39,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522180448] [2024-06-27 22:17:39,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522180448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:39,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:39,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:39,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360046402] [2024-06-27 22:17:39,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:39,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:39,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:39,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:39,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:39,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:17:39,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 710 transitions, 15416 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:39,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:39,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:17:39,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:41,526 INFO L124 PetriNetUnfolderBase]: 2097/3554 cut-off events. [2024-06-27 22:17:41,526 INFO L125 PetriNetUnfolderBase]: For 332250/332250 co-relation queries the response was YES. [2024-06-27 22:17:41,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42083 conditions, 3554 events. 2097/3554 cut-off events. For 332250/332250 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 22192 event pairs, 412 based on Foata normal form. 2/3492 useless extension candidates. Maximal degree in co-relation 41895. Up to 3107 conditions per place. [2024-06-27 22:17:41,586 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 629 selfloop transitions, 94 changer transitions 0/736 dead transitions. [2024-06-27 22:17:41,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 736 transitions, 17376 flow [2024-06-27 22:17:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:41,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:41,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:17:41,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-27 22:17:41,587 INFO L175 Difference]: Start difference. First operand has 398 places, 710 transitions, 15416 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:17:41,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 736 transitions, 17376 flow [2024-06-27 22:17:43,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 736 transitions, 16969 flow, removed 158 selfloop flow, removed 4 redundant places. [2024-06-27 22:17:43,034 INFO L231 Difference]: Finished difference. Result has 403 places, 710 transitions, 15204 flow [2024-06-27 22:17:43,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=15009, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15204, PETRI_PLACES=403, PETRI_TRANSITIONS=710} [2024-06-27 22:17:43,035 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 363 predicate places. [2024-06-27 22:17:43,035 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 710 transitions, 15204 flow [2024-06-27 22:17:43,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:43,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:43,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:43,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 22:17:43,036 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:43,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:43,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1742278907, now seen corresponding path program 1 times [2024-06-27 22:17:43,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:43,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95053814] [2024-06-27 22:17:43,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:43,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:44,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:44,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95053814] [2024-06-27 22:17:44,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95053814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:44,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:44,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:17:44,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412498367] [2024-06-27 22:17:44,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:44,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:17:44,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:44,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:17:44,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:17:44,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:17:44,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 710 transitions, 15204 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:44,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:44,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:17:44,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:45,645 INFO L124 PetriNetUnfolderBase]: 2109/3574 cut-off events. [2024-06-27 22:17:45,645 INFO L125 PetriNetUnfolderBase]: For 338893/338893 co-relation queries the response was YES. [2024-06-27 22:17:45,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42111 conditions, 3574 events. 2109/3574 cut-off events. For 338893/338893 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 22343 event pairs, 499 based on Foata normal form. 2/3512 useless extension candidates. Maximal degree in co-relation 41923. Up to 3285 conditions per place. [2024-06-27 22:17:45,707 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 670 selfloop transitions, 56 changer transitions 0/740 dead transitions. [2024-06-27 22:17:45,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 740 transitions, 17340 flow [2024-06-27 22:17:45,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:45,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:17:45,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-27 22:17:45,709 INFO L175 Difference]: Start difference. First operand has 403 places, 710 transitions, 15204 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:17:45,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 740 transitions, 17340 flow [2024-06-27 22:17:47,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 740 transitions, 17190 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:17:47,174 INFO L231 Difference]: Finished difference. Result has 408 places, 717 transitions, 15423 flow [2024-06-27 22:17:47,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=15056, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15423, PETRI_PLACES=408, PETRI_TRANSITIONS=717} [2024-06-27 22:17:47,175 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 368 predicate places. [2024-06-27 22:17:47,175 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 717 transitions, 15423 flow [2024-06-27 22:17:47,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:47,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:47,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:47,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 22:17:47,176 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:47,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:47,176 INFO L85 PathProgramCache]: Analyzing trace with hash 430107453, now seen corresponding path program 12 times [2024-06-27 22:17:47,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:47,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439707352] [2024-06-27 22:17:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:47,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:48,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:48,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439707352] [2024-06-27 22:17:48,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439707352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:48,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:48,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:48,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488463615] [2024-06-27 22:17:48,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:48,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:48,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:48,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:48,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:48,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:17:48,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 717 transitions, 15423 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:48,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:48,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:17:48,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:49,919 INFO L124 PetriNetUnfolderBase]: 2368/3952 cut-off events. [2024-06-27 22:17:49,920 INFO L125 PetriNetUnfolderBase]: For 361814/361814 co-relation queries the response was YES. [2024-06-27 22:17:49,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46530 conditions, 3952 events. 2368/3952 cut-off events. For 361814/361814 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 24306 event pairs, 251 based on Foata normal form. 2/3907 useless extension candidates. Maximal degree in co-relation 46339. Up to 3540 conditions per place. [2024-06-27 22:17:49,995 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 675 selfloop transitions, 73 changer transitions 0/754 dead transitions. [2024-06-27 22:17:49,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 754 transitions, 17461 flow [2024-06-27 22:17:49,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:17:49,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:17:49,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 22:17:49,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 22:17:49,997 INFO L175 Difference]: Start difference. First operand has 408 places, 717 transitions, 15423 flow. Second operand 10 states and 156 transitions. [2024-06-27 22:17:49,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 754 transitions, 17461 flow [2024-06-27 22:17:51,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 754 transitions, 17196 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-27 22:17:51,602 INFO L231 Difference]: Finished difference. Result has 413 places, 728 transitions, 15727 flow [2024-06-27 22:17:51,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=15158, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15727, PETRI_PLACES=413, PETRI_TRANSITIONS=728} [2024-06-27 22:17:51,603 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 373 predicate places. [2024-06-27 22:17:51,603 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 728 transitions, 15727 flow [2024-06-27 22:17:51,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:51,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:51,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:51,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 22:17:51,604 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:51,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash 432010233, now seen corresponding path program 13 times [2024-06-27 22:17:51,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:51,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978670174] [2024-06-27 22:17:51,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:51,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:52,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:52,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978670174] [2024-06-27 22:17:52,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978670174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:52,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:52,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:52,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109404323] [2024-06-27 22:17:52,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:52,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:52,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:52,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:52,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:52,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:17:52,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 728 transitions, 15727 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:52,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:52,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:17:52,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:54,299 INFO L124 PetriNetUnfolderBase]: 2416/4032 cut-off events. [2024-06-27 22:17:54,299 INFO L125 PetriNetUnfolderBase]: For 380282/380282 co-relation queries the response was YES. [2024-06-27 22:17:54,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47767 conditions, 4032 events. 2416/4032 cut-off events. For 380282/380282 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 24920 event pairs, 267 based on Foata normal form. 2/3987 useless extension candidates. Maximal degree in co-relation 47572. Up to 3598 conditions per place. [2024-06-27 22:17:54,370 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 658 selfloop transitions, 98 changer transitions 0/762 dead transitions. [2024-06-27 22:17:54,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 762 transitions, 17683 flow [2024-06-27 22:17:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:54,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:54,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 22:17:54,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 22:17:54,372 INFO L175 Difference]: Start difference. First operand has 413 places, 728 transitions, 15727 flow. Second operand 9 states and 150 transitions. [2024-06-27 22:17:54,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 762 transitions, 17683 flow [2024-06-27 22:17:56,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 762 transitions, 17398 flow, removed 99 selfloop flow, removed 5 redundant places. [2024-06-27 22:17:56,095 INFO L231 Difference]: Finished difference. Result has 417 places, 736 transitions, 15929 flow [2024-06-27 22:17:56,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=15442, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=630, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15929, PETRI_PLACES=417, PETRI_TRANSITIONS=736} [2024-06-27 22:17:56,096 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 377 predicate places. [2024-06-27 22:17:56,096 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 736 transitions, 15929 flow [2024-06-27 22:17:56,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:56,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:56,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:56,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 22:17:56,097 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:17:56,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1624371787, now seen corresponding path program 14 times [2024-06-27 22:17:56,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:56,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937012293] [2024-06-27 22:17:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:56,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:57,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:57,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937012293] [2024-06-27 22:17:57,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937012293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:57,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:57,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:57,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142893365] [2024-06-27 22:17:57,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:57,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:57,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:57,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:57,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:57,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:17:57,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 736 transitions, 15929 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:57,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:57,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:17:57,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:59,032 INFO L124 PetriNetUnfolderBase]: 2478/4133 cut-off events. [2024-06-27 22:17:59,033 INFO L125 PetriNetUnfolderBase]: For 401376/401376 co-relation queries the response was YES. [2024-06-27 22:17:59,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49293 conditions, 4133 events. 2478/4133 cut-off events. For 401376/401376 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 25688 event pairs, 290 based on Foata normal form. 2/4088 useless extension candidates. Maximal degree in co-relation 49097. Up to 3695 conditions per place. [2024-06-27 22:17:59,106 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 660 selfloop transitions, 120 changer transitions 0/786 dead transitions. [2024-06-27 22:17:59,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 786 transitions, 18547 flow [2024-06-27 22:17:59,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:59,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 22:17:59,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 22:17:59,108 INFO L175 Difference]: Start difference. First operand has 417 places, 736 transitions, 15929 flow. Second operand 9 states and 150 transitions. [2024-06-27 22:17:59,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 786 transitions, 18547 flow [2024-06-27 22:18:01,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 786 transitions, 18237 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-06-27 22:18:01,225 INFO L231 Difference]: Finished difference. Result has 421 places, 754 transitions, 16625 flow [2024-06-27 22:18:01,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=15619, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16625, PETRI_PLACES=421, PETRI_TRANSITIONS=754} [2024-06-27 22:18:01,226 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 381 predicate places. [2024-06-27 22:18:01,226 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 754 transitions, 16625 flow [2024-06-27 22:18:01,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:01,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:01,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:01,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 22:18:01,227 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:01,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1778865345, now seen corresponding path program 15 times [2024-06-27 22:18:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817149835] [2024-06-27 22:18:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:01,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:02,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817149835] [2024-06-27 22:18:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817149835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:02,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:02,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:02,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597505300] [2024-06-27 22:18:02,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:02,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:02,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:02,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:02,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:18:02,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 754 transitions, 16625 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:02,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:02,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:18:02,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:04,102 INFO L124 PetriNetUnfolderBase]: 2529/4218 cut-off events. [2024-06-27 22:18:04,103 INFO L125 PetriNetUnfolderBase]: For 422787/422787 co-relation queries the response was YES. [2024-06-27 22:18:04,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50757 conditions, 4218 events. 2529/4218 cut-off events. For 422787/422787 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 26371 event pairs, 291 based on Foata normal form. 2/4173 useless extension candidates. Maximal degree in co-relation 50559. Up to 3785 conditions per place. [2024-06-27 22:18:04,179 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 678 selfloop transitions, 111 changer transitions 0/795 dead transitions. [2024-06-27 22:18:04,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 795 transitions, 19050 flow [2024-06-27 22:18:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:18:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:18:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 22:18:04,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2024-06-27 22:18:04,181 INFO L175 Difference]: Start difference. First operand has 421 places, 754 transitions, 16625 flow. Second operand 9 states and 151 transitions. [2024-06-27 22:18:04,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 795 transitions, 19050 flow [2024-06-27 22:18:06,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 795 transitions, 18550 flow, removed 219 selfloop flow, removed 4 redundant places. [2024-06-27 22:18:06,044 INFO L231 Difference]: Finished difference. Result has 426 places, 764 transitions, 16858 flow [2024-06-27 22:18:06,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=16275, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=643, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16858, PETRI_PLACES=426, PETRI_TRANSITIONS=764} [2024-06-27 22:18:06,044 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 386 predicate places. [2024-06-27 22:18:06,044 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 764 transitions, 16858 flow [2024-06-27 22:18:06,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:06,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:06,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:06,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 22:18:06,045 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:06,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:06,045 INFO L85 PathProgramCache]: Analyzing trace with hash 521660047, now seen corresponding path program 16 times [2024-06-27 22:18:06,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:06,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270747954] [2024-06-27 22:18:06,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:06,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:07,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:07,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:07,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270747954] [2024-06-27 22:18:07,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270747954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:07,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:07,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:07,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705070032] [2024-06-27 22:18:07,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:07,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:07,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:07,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:07,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:07,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:18:07,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 764 transitions, 16858 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:07,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:07,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:18:07,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:09,079 INFO L124 PetriNetUnfolderBase]: 2557/4264 cut-off events. [2024-06-27 22:18:09,079 INFO L125 PetriNetUnfolderBase]: For 418357/418357 co-relation queries the response was YES. [2024-06-27 22:18:09,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51064 conditions, 4264 events. 2557/4264 cut-off events. For 418357/418357 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 26683 event pairs, 300 based on Foata normal form. 2/4219 useless extension candidates. Maximal degree in co-relation 50864. Up to 3820 conditions per place. [2024-06-27 22:18:09,153 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 661 selfloop transitions, 131 changer transitions 0/798 dead transitions. [2024-06-27 22:18:09,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 798 transitions, 18976 flow [2024-06-27 22:18:09,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:18:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:18:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 22:18:09,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-27 22:18:09,155 INFO L175 Difference]: Start difference. First operand has 426 places, 764 transitions, 16858 flow. Second operand 9 states and 152 transitions. [2024-06-27 22:18:09,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 798 transitions, 18976 flow [2024-06-27 22:18:11,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 798 transitions, 18680 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-27 22:18:11,129 INFO L231 Difference]: Finished difference. Result has 430 places, 774 transitions, 17212 flow [2024-06-27 22:18:11,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=16562, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17212, PETRI_PLACES=430, PETRI_TRANSITIONS=774} [2024-06-27 22:18:11,130 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 390 predicate places. [2024-06-27 22:18:11,130 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 774 transitions, 17212 flow [2024-06-27 22:18:11,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:11,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:11,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:11,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 22:18:11,130 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:11,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash -173639623, now seen corresponding path program 17 times [2024-06-27 22:18:11,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:11,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727078889] [2024-06-27 22:18:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:11,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:12,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:12,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727078889] [2024-06-27 22:18:12,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727078889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:12,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:12,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:18:12,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087326952] [2024-06-27 22:18:12,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:12,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:18:12,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:12,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:18:12,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:18:12,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:18:12,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 774 transitions, 17212 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:12,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:12,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:18:12,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:13,962 INFO L124 PetriNetUnfolderBase]: 2581/4304 cut-off events. [2024-06-27 22:18:13,963 INFO L125 PetriNetUnfolderBase]: For 428733/428733 co-relation queries the response was YES. [2024-06-27 22:18:14,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51678 conditions, 4304 events. 2581/4304 cut-off events. For 428733/428733 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 26989 event pairs, 296 based on Foata normal form. 2/4259 useless extension candidates. Maximal degree in co-relation 51476. Up to 3884 conditions per place. [2024-06-27 22:18:14,038 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 686 selfloop transitions, 111 changer transitions 0/803 dead transitions. [2024-06-27 22:18:14,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 803 transitions, 19170 flow [2024-06-27 22:18:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:18:14,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:18:14,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 22:18:14,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 22:18:14,040 INFO L175 Difference]: Start difference. First operand has 430 places, 774 transitions, 17212 flow. Second operand 9 states and 150 transitions. [2024-06-27 22:18:14,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 803 transitions, 19170 flow [2024-06-27 22:18:16,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 803 transitions, 18812 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-27 22:18:16,341 INFO L231 Difference]: Finished difference. Result has 433 places, 778 transitions, 17278 flow [2024-06-27 22:18:16,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=16854, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17278, PETRI_PLACES=433, PETRI_TRANSITIONS=778} [2024-06-27 22:18:16,342 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 393 predicate places. [2024-06-27 22:18:16,342 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 778 transitions, 17278 flow [2024-06-27 22:18:16,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:16,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:16,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:16,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 22:18:16,342 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:16,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:16,343 INFO L85 PathProgramCache]: Analyzing trace with hash 528089137, now seen corresponding path program 18 times [2024-06-27 22:18:16,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:16,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43201025] [2024-06-27 22:18:16,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:16,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:17,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:17,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43201025] [2024-06-27 22:18:17,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43201025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:17,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:17,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:17,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565552144] [2024-06-27 22:18:17,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:17,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:17,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:17,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:17,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:17,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:18:17,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 778 transitions, 17278 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:17,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:17,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:18:17,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:19,483 INFO L124 PetriNetUnfolderBase]: 2605/4352 cut-off events. [2024-06-27 22:18:19,484 INFO L125 PetriNetUnfolderBase]: For 440471/440471 co-relation queries the response was YES. [2024-06-27 22:18:19,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52126 conditions, 4352 events. 2605/4352 cut-off events. For 440471/440471 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 27481 event pairs, 451 based on Foata normal form. 2/4310 useless extension candidates. Maximal degree in co-relation 51923. Up to 4098 conditions per place. [2024-06-27 22:18:19,553 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 735 selfloop transitions, 65 changer transitions 0/806 dead transitions. [2024-06-27 22:18:19,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 806 transitions, 19276 flow [2024-06-27 22:18:19,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:18:19,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:18:19,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 22:18:19,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-27 22:18:19,554 INFO L175 Difference]: Start difference. First operand has 433 places, 778 transitions, 17278 flow. Second operand 9 states and 146 transitions. [2024-06-27 22:18:19,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 806 transitions, 19276 flow [2024-06-27 22:18:21,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 806 transitions, 18924 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-27 22:18:21,534 INFO L231 Difference]: Finished difference. Result has 435 places, 784 transitions, 17376 flow [2024-06-27 22:18:21,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=16926, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17376, PETRI_PLACES=435, PETRI_TRANSITIONS=784} [2024-06-27 22:18:21,535 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 395 predicate places. [2024-06-27 22:18:21,535 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 784 transitions, 17376 flow [2024-06-27 22:18:21,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:21,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:21,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:21,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 22:18:21,536 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:21,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:21,536 INFO L85 PathProgramCache]: Analyzing trace with hash -680900361, now seen corresponding path program 3 times [2024-06-27 22:18:21,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:21,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357025010] [2024-06-27 22:18:21,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:21,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:23,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:23,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:23,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357025010] [2024-06-27 22:18:23,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357025010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:23,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:23,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:23,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738912311] [2024-06-27 22:18:23,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:23,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:23,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:23,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:23,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:23,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:18:23,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 784 transitions, 17376 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:23,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:23,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:18:23,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:25,040 INFO L124 PetriNetUnfolderBase]: 2390/4036 cut-off events. [2024-06-27 22:18:25,040 INFO L125 PetriNetUnfolderBase]: For 437013/437013 co-relation queries the response was YES. [2024-06-27 22:18:25,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49376 conditions, 4036 events. 2390/4036 cut-off events. For 437013/437013 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 25851 event pairs, 386 based on Foata normal form. 2/3973 useless extension candidates. Maximal degree in co-relation 49172. Up to 3271 conditions per place. [2024-06-27 22:18:25,119 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 722 selfloop transitions, 122 changer transitions 0/857 dead transitions. [2024-06-27 22:18:25,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 857 transitions, 21141 flow [2024-06-27 22:18:25,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:18:25,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:18:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:18:25,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-27 22:18:25,121 INFO L175 Difference]: Start difference. First operand has 435 places, 784 transitions, 17376 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:18:25,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 857 transitions, 21141 flow [2024-06-27 22:18:27,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 857 transitions, 20779 flow, removed 140 selfloop flow, removed 6 redundant places. [2024-06-27 22:18:27,181 INFO L231 Difference]: Finished difference. Result has 441 places, 816 transitions, 17995 flow [2024-06-27 22:18:27,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=17014, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17995, PETRI_PLACES=441, PETRI_TRANSITIONS=816} [2024-06-27 22:18:27,182 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 401 predicate places. [2024-06-27 22:18:27,182 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 816 transitions, 17995 flow [2024-06-27 22:18:27,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:27,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:27,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:27,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 22:18:27,182 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:27,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:27,183 INFO L85 PathProgramCache]: Analyzing trace with hash -680891681, now seen corresponding path program 2 times [2024-06-27 22:18:27,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:27,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518677185] [2024-06-27 22:18:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:28,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:28,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:28,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518677185] [2024-06-27 22:18:28,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518677185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:28,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:28,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:18:28,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060293039] [2024-06-27 22:18:28,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:28,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:18:28,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:28,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:18:28,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:18:28,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:18:28,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 816 transitions, 17995 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:28,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:28,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:18:28,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:30,125 INFO L124 PetriNetUnfolderBase]: 2402/4056 cut-off events. [2024-06-27 22:18:30,126 INFO L125 PetriNetUnfolderBase]: For 437290/437290 co-relation queries the response was YES. [2024-06-27 22:18:30,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49888 conditions, 4056 events. 2402/4056 cut-off events. For 437290/437290 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 26101 event pairs, 395 based on Foata normal form. 2/3993 useless extension candidates. Maximal degree in co-relation 49682. Up to 3667 conditions per place. [2024-06-27 22:18:30,207 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 740 selfloop transitions, 95 changer transitions 0/849 dead transitions. [2024-06-27 22:18:30,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 849 transitions, 20606 flow [2024-06-27 22:18:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:18:30,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:18:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 22:18:30,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030864197530864 [2024-06-27 22:18:30,209 INFO L175 Difference]: Start difference. First operand has 441 places, 816 transitions, 17995 flow. Second operand 9 states and 163 transitions. [2024-06-27 22:18:30,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 849 transitions, 20606 flow [2024-06-27 22:18:32,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 849 transitions, 20486 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-27 22:18:32,040 INFO L231 Difference]: Finished difference. Result has 448 places, 823 transitions, 18319 flow [2024-06-27 22:18:32,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=17875, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18319, PETRI_PLACES=448, PETRI_TRANSITIONS=823} [2024-06-27 22:18:32,041 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 408 predicate places. [2024-06-27 22:18:32,041 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 823 transitions, 18319 flow [2024-06-27 22:18:32,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:32,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:32,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:32,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 22:18:32,042 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:32,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:32,042 INFO L85 PathProgramCache]: Analyzing trace with hash -395791811, now seen corresponding path program 3 times [2024-06-27 22:18:32,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:32,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596815626] [2024-06-27 22:18:32,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:32,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:33,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:33,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596815626] [2024-06-27 22:18:33,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596815626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:33,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:33,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:33,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617618920] [2024-06-27 22:18:33,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:33,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:33,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:33,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:33,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:34,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:18:34,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 823 transitions, 18319 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:34,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:34,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:18:34,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:36,148 INFO L124 PetriNetUnfolderBase]: 2717/4530 cut-off events. [2024-06-27 22:18:36,148 INFO L125 PetriNetUnfolderBase]: For 461620/461620 co-relation queries the response was YES. [2024-06-27 22:18:36,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54662 conditions, 4530 events. 2717/4530 cut-off events. For 461620/461620 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 28793 event pairs, 681 based on Foata normal form. 2/4488 useless extension candidates. Maximal degree in co-relation 54452. Up to 4287 conditions per place. [2024-06-27 22:18:36,226 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 825 selfloop transitions, 27 changer transitions 0/858 dead transitions. [2024-06-27 22:18:36,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 858 transitions, 20852 flow [2024-06-27 22:18:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:18:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:18:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 22:18:36,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-27 22:18:36,256 INFO L175 Difference]: Start difference. First operand has 448 places, 823 transitions, 18319 flow. Second operand 10 states and 158 transitions. [2024-06-27 22:18:36,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 858 transitions, 20852 flow [2024-06-27 22:18:38,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 858 transitions, 20536 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-27 22:18:38,394 INFO L231 Difference]: Finished difference. Result has 453 places, 829 transitions, 18305 flow [2024-06-27 22:18:38,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18009, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=799, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18305, PETRI_PLACES=453, PETRI_TRANSITIONS=829} [2024-06-27 22:18:38,395 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 413 predicate places. [2024-06-27 22:18:38,395 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 829 transitions, 18305 flow [2024-06-27 22:18:38,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:38,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:38,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:38,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 22:18:38,396 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:38,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:38,396 INFO L85 PathProgramCache]: Analyzing trace with hash -681137945, now seen corresponding path program 19 times [2024-06-27 22:18:38,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:38,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588634558] [2024-06-27 22:18:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:38,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:39,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:39,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588634558] [2024-06-27 22:18:39,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588634558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:39,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:39,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:39,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285895641] [2024-06-27 22:18:39,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:39,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:39,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:39,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:39,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:39,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:18:39,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 829 transitions, 18305 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:39,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:39,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:18:39,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:41,689 INFO L124 PetriNetUnfolderBase]: 2732/4550 cut-off events. [2024-06-27 22:18:41,689 INFO L125 PetriNetUnfolderBase]: For 474960/474960 co-relation queries the response was YES. [2024-06-27 22:18:41,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55071 conditions, 4550 events. 2732/4550 cut-off events. For 474960/474960 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 28903 event pairs, 442 based on Foata normal form. 2/4508 useless extension candidates. Maximal degree in co-relation 54858. Up to 4193 conditions per place. [2024-06-27 22:18:41,777 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 753 selfloop transitions, 98 changer transitions 0/857 dead transitions. [2024-06-27 22:18:41,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 857 transitions, 20649 flow [2024-06-27 22:18:41,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:18:41,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:18:41,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 22:18:41,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 22:18:41,779 INFO L175 Difference]: Start difference. First operand has 453 places, 829 transitions, 18305 flow. Second operand 9 states and 150 transitions. [2024-06-27 22:18:41,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 857 transitions, 20649 flow [2024-06-27 22:18:44,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 857 transitions, 20468 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-27 22:18:44,193 INFO L231 Difference]: Finished difference. Result has 455 places, 832 transitions, 18626 flow [2024-06-27 22:18:44,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18124, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18626, PETRI_PLACES=455, PETRI_TRANSITIONS=832} [2024-06-27 22:18:44,196 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 415 predicate places. [2024-06-27 22:18:44,196 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 832 transitions, 18626 flow [2024-06-27 22:18:44,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:44,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:44,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:44,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 22:18:44,196 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:44,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:44,212 INFO L85 PathProgramCache]: Analyzing trace with hash -681131001, now seen corresponding path program 4 times [2024-06-27 22:18:44,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:44,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987104358] [2024-06-27 22:18:44,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:44,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:45,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:45,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987104358] [2024-06-27 22:18:45,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987104358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:45,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:45,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:45,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691008822] [2024-06-27 22:18:45,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:45,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:45,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:45,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:45,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:45,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:18:45,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 832 transitions, 18626 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:45,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:45,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:18:45,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:47,751 INFO L124 PetriNetUnfolderBase]: 2430/4102 cut-off events. [2024-06-27 22:18:47,751 INFO L125 PetriNetUnfolderBase]: For 461005/461005 co-relation queries the response was YES. [2024-06-27 22:18:47,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50923 conditions, 4102 events. 2430/4102 cut-off events. For 461005/461005 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 26410 event pairs, 400 based on Foata normal form. 2/4039 useless extension candidates. Maximal degree in co-relation 50709. Up to 3333 conditions per place. [2024-06-27 22:18:47,828 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 728 selfloop transitions, 131 changer transitions 0/872 dead transitions. [2024-06-27 22:18:47,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 872 transitions, 21829 flow [2024-06-27 22:18:47,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:18:47,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:18:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:18:47,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-06-27 22:18:47,830 INFO L175 Difference]: Start difference. First operand has 455 places, 832 transitions, 18626 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:18:47,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 872 transitions, 21829 flow [2024-06-27 22:18:49,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 872 transitions, 21225 flow, removed 206 selfloop flow, removed 7 redundant places. [2024-06-27 22:18:49,843 INFO L231 Difference]: Finished difference. Result has 459 places, 834 transitions, 18354 flow [2024-06-27 22:18:49,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18022, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18354, PETRI_PLACES=459, PETRI_TRANSITIONS=834} [2024-06-27 22:18:49,844 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 419 predicate places. [2024-06-27 22:18:49,844 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 834 transitions, 18354 flow [2024-06-27 22:18:49,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:49,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:49,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:49,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 22:18:49,845 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:49,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash -395800491, now seen corresponding path program 5 times [2024-06-27 22:18:49,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:49,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023374338] [2024-06-27 22:18:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:49,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:51,513 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 22:18:51,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:51,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023374338] [2024-06-27 22:18:51,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023374338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:51,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:51,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:51,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952943453] [2024-06-27 22:18:51,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:51,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:51,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:51,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:18:51,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 834 transitions, 18354 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:51,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:51,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:18:51,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:53,960 INFO L124 PetriNetUnfolderBase]: 2738/4564 cut-off events. [2024-06-27 22:18:53,960 INFO L125 PetriNetUnfolderBase]: For 459134/459134 co-relation queries the response was YES. [2024-06-27 22:18:54,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54721 conditions, 4564 events. 2738/4564 cut-off events. For 459134/459134 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 29052 event pairs, 687 based on Foata normal form. 2/4522 useless extension candidates. Maximal degree in co-relation 54505. Up to 4263 conditions per place. [2024-06-27 22:18:54,037 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 823 selfloop transitions, 38 changer transitions 0/867 dead transitions. [2024-06-27 22:18:54,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 867 transitions, 20970 flow [2024-06-27 22:18:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:18:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:18:54,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 22:18:54,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-27 22:18:54,039 INFO L175 Difference]: Start difference. First operand has 459 places, 834 transitions, 18354 flow. Second operand 11 states and 171 transitions. [2024-06-27 22:18:54,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 867 transitions, 20970 flow [2024-06-27 22:18:56,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 867 transitions, 20825 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:18:56,098 INFO L231 Difference]: Finished difference. Result has 467 places, 837 transitions, 18411 flow [2024-06-27 22:18:56,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18212, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=799, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18411, PETRI_PLACES=467, PETRI_TRANSITIONS=837} [2024-06-27 22:18:56,099 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 427 predicate places. [2024-06-27 22:18:56,099 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 837 transitions, 18411 flow [2024-06-27 22:18:56,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:56,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:56,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:56,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 22:18:56,099 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:18:56,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:56,100 INFO L85 PathProgramCache]: Analyzing trace with hash -385316291, now seen corresponding path program 4 times [2024-06-27 22:18:56,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:56,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027253230] [2024-06-27 22:18:56,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:56,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:58,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:58,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:58,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027253230] [2024-06-27 22:18:58,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027253230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:58,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:58,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:58,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117116306] [2024-06-27 22:18:58,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:58,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:58,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:58,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:58,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:58,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:18:58,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 837 transitions, 18411 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:58,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:58,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:18:58,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:00,717 INFO L124 PetriNetUnfolderBase]: 2783/4638 cut-off events. [2024-06-27 22:19:00,717 INFO L125 PetriNetUnfolderBase]: For 487298/487298 co-relation queries the response was YES. [2024-06-27 22:19:00,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55877 conditions, 4638 events. 2783/4638 cut-off events. For 487298/487298 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 29560 event pairs, 699 based on Foata normal form. 2/4596 useless extension candidates. Maximal degree in co-relation 55659. Up to 4340 conditions per place. [2024-06-27 22:19:00,797 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 854 selfloop transitions, 35 changer transitions 0/895 dead transitions. [2024-06-27 22:19:00,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 895 transitions, 21751 flow [2024-06-27 22:19:00,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:19:00,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:19:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 22:19:00,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-27 22:19:00,799 INFO L175 Difference]: Start difference. First operand has 467 places, 837 transitions, 18411 flow. Second operand 11 states and 171 transitions. [2024-06-27 22:19:00,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 895 transitions, 21751 flow [2024-06-27 22:19:03,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 895 transitions, 21583 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 22:19:03,174 INFO L231 Difference]: Finished difference. Result has 474 places, 862 transitions, 19324 flow [2024-06-27 22:19:03,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18269, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=807, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19324, PETRI_PLACES=474, PETRI_TRANSITIONS=862} [2024-06-27 22:19:03,175 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 434 predicate places. [2024-06-27 22:19:03,175 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 862 transitions, 19324 flow [2024-06-27 22:19:03,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:03,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:03,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:03,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 22:19:03,176 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:03,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash -395800739, now seen corresponding path program 2 times [2024-06-27 22:19:03,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:03,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80338231] [2024-06-27 22:19:03,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:03,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:04,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:04,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80338231] [2024-06-27 22:19:04,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80338231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:04,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:04,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:19:04,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239118611] [2024-06-27 22:19:04,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:04,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:19:04,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:04,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:19:04,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:19:04,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:19:04,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 862 transitions, 19324 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:04,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:04,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:19:04,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:06,644 INFO L124 PetriNetUnfolderBase]: 2783/4638 cut-off events. [2024-06-27 22:19:06,644 INFO L125 PetriNetUnfolderBase]: For 498274/498274 co-relation queries the response was YES. [2024-06-27 22:19:06,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56174 conditions, 4638 events. 2783/4638 cut-off events. For 498274/498274 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 29542 event pairs, 708 based on Foata normal form. 2/4596 useless extension candidates. Maximal degree in co-relation 55950. Up to 4336 conditions per place. [2024-06-27 22:19:06,733 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 831 selfloop transitions, 54 changer transitions 0/891 dead transitions. [2024-06-27 22:19:06,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 891 transitions, 21877 flow [2024-06-27 22:19:06,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:06,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:06,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 22:19:06,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-27 22:19:06,735 INFO L175 Difference]: Start difference. First operand has 474 places, 862 transitions, 19324 flow. Second operand 9 states and 148 transitions. [2024-06-27 22:19:06,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 891 transitions, 21877 flow [2024-06-27 22:19:09,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 891 transitions, 21178 flow, removed 343 selfloop flow, removed 3 redundant places. [2024-06-27 22:19:09,636 INFO L231 Difference]: Finished difference. Result has 480 places, 867 transitions, 19004 flow [2024-06-27 22:19:09,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18687, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=862, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19004, PETRI_PLACES=480, PETRI_TRANSITIONS=867} [2024-06-27 22:19:09,637 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 440 predicate places. [2024-06-27 22:19:09,637 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 867 transitions, 19004 flow [2024-06-27 22:19:09,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:09,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:09,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:09,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 22:19:09,638 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:09,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:09,638 INFO L85 PathProgramCache]: Analyzing trace with hash -672559811, now seen corresponding path program 5 times [2024-06-27 22:19:09,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:09,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926060531] [2024-06-27 22:19:09,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:09,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:11,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:11,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926060531] [2024-06-27 22:19:11,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926060531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:11,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:11,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:19:11,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133277313] [2024-06-27 22:19:11,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:11,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:19:11,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:11,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:19:11,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:19:11,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:19:11,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 867 transitions, 19004 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:11,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:11,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:19:11,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:13,594 INFO L124 PetriNetUnfolderBase]: 2783/4638 cut-off events. [2024-06-27 22:19:13,594 INFO L125 PetriNetUnfolderBase]: For 487610/487610 co-relation queries the response was YES. [2024-06-27 22:19:13,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55496 conditions, 4638 events. 2783/4638 cut-off events. For 487610/487610 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 29535 event pairs, 707 based on Foata normal form. 2/4596 useless extension candidates. Maximal degree in co-relation 55270. Up to 4392 conditions per place. [2024-06-27 22:19:13,689 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 853 selfloop transitions, 46 changer transitions 0/905 dead transitions. [2024-06-27 22:19:13,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 905 transitions, 21564 flow [2024-06-27 22:19:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:19:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:19:13,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-27 22:19:13,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-27 22:19:13,691 INFO L175 Difference]: Start difference. First operand has 480 places, 867 transitions, 19004 flow. Second operand 12 states and 186 transitions. [2024-06-27 22:19:13,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 905 transitions, 21564 flow [2024-06-27 22:19:16,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 905 transitions, 21286 flow, removed 106 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:16,182 INFO L231 Difference]: Finished difference. Result has 486 places, 871 transitions, 19038 flow [2024-06-27 22:19:16,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18727, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=823, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=19038, PETRI_PLACES=486, PETRI_TRANSITIONS=871} [2024-06-27 22:19:16,182 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 446 predicate places. [2024-06-27 22:19:16,182 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 871 transitions, 19038 flow [2024-06-27 22:19:16,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:16,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:16,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:16,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 22:19:16,183 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:16,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:16,184 INFO L85 PathProgramCache]: Analyzing trace with hash -42481827, now seen corresponding path program 3 times [2024-06-27 22:19:16,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:16,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172465105] [2024-06-27 22:19:16,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:16,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:17,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:17,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172465105] [2024-06-27 22:19:17,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172465105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:17,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:17,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:17,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280601217] [2024-06-27 22:19:17,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:17,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:17,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:17,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:17,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:17,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:19:17,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 871 transitions, 19038 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:17,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:17,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:19:17,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:19,108 INFO L124 PetriNetUnfolderBase]: 2501/4214 cut-off events. [2024-06-27 22:19:19,108 INFO L125 PetriNetUnfolderBase]: For 483135/483135 co-relation queries the response was YES. [2024-06-27 22:19:19,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51966 conditions, 4214 events. 2501/4214 cut-off events. For 483135/483135 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 27212 event pairs, 427 based on Foata normal form. 2/4150 useless extension candidates. Maximal degree in co-relation 51740. Up to 3840 conditions per place. [2024-06-27 22:19:19,183 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 809 selfloop transitions, 76 changer transitions 0/899 dead transitions. [2024-06-27 22:19:19,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 899 transitions, 21672 flow [2024-06-27 22:19:19,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:19,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 22:19:19,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-06-27 22:19:19,184 INFO L175 Difference]: Start difference. First operand has 486 places, 871 transitions, 19038 flow. Second operand 8 states and 149 transitions. [2024-06-27 22:19:19,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 899 transitions, 21672 flow [2024-06-27 22:19:21,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 899 transitions, 21444 flow, removed 71 selfloop flow, removed 9 redundant places. [2024-06-27 22:19:21,356 INFO L231 Difference]: Finished difference. Result has 485 places, 878 transitions, 19238 flow [2024-06-27 22:19:21,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18810, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=871, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19238, PETRI_PLACES=485, PETRI_TRANSITIONS=878} [2024-06-27 22:19:21,357 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 445 predicate places. [2024-06-27 22:19:21,357 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 878 transitions, 19238 flow [2024-06-27 22:19:21,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:21,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:21,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:21,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 22:19:21,358 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:21,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:21,358 INFO L85 PathProgramCache]: Analyzing trace with hash -42481579, now seen corresponding path program 6 times [2024-06-27 22:19:21,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:21,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179118078] [2024-06-27 22:19:21,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:21,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:22,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:22,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179118078] [2024-06-27 22:19:22,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179118078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:22,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:22,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:19:22,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038779266] [2024-06-27 22:19:22,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:22,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:19:22,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:22,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:19:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:19:23,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:19:23,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 878 transitions, 19238 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:23,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:23,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:19:23,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:24,965 INFO L124 PetriNetUnfolderBase]: 2517/4238 cut-off events. [2024-06-27 22:19:24,965 INFO L125 PetriNetUnfolderBase]: For 488680/488680 co-relation queries the response was YES. [2024-06-27 22:19:25,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52517 conditions, 4238 events. 2517/4238 cut-off events. For 488680/488680 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 27351 event pairs, 427 based on Foata normal form. 2/4174 useless extension candidates. Maximal degree in co-relation 52290. Up to 3877 conditions per place. [2024-06-27 22:19:25,053 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 842 selfloop transitions, 56 changer transitions 0/911 dead transitions. [2024-06-27 22:19:25,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 911 transitions, 21989 flow [2024-06-27 22:19:25,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:25,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:19:25,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-27 22:19:25,055 INFO L175 Difference]: Start difference. First operand has 485 places, 878 transitions, 19238 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:19:25,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 911 transitions, 21989 flow [2024-06-27 22:19:27,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 911 transitions, 21699 flow, removed 86 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:27,573 INFO L231 Difference]: Finished difference. Result has 490 places, 883 transitions, 19248 flow [2024-06-27 22:19:27,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=18971, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=878, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=825, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19248, PETRI_PLACES=490, PETRI_TRANSITIONS=883} [2024-06-27 22:19:27,574 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 450 predicate places. [2024-06-27 22:19:27,574 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 883 transitions, 19248 flow [2024-06-27 22:19:27,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:27,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:27,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:27,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 22:19:27,575 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:27,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:27,575 INFO L85 PathProgramCache]: Analyzing trace with hash -42472899, now seen corresponding path program 6 times [2024-06-27 22:19:27,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:27,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53098703] [2024-06-27 22:19:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:27,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:28,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53098703] [2024-06-27 22:19:28,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53098703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:28,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:28,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:28,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850131607] [2024-06-27 22:19:28,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:28,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:28,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:28,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:29,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:19:29,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 883 transitions, 19248 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:29,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:29,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:19:29,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:30,688 INFO L124 PetriNetUnfolderBase]: 2517/4238 cut-off events. [2024-06-27 22:19:30,688 INFO L125 PetriNetUnfolderBase]: For 479723/479723 co-relation queries the response was YES. [2024-06-27 22:19:30,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52211 conditions, 4238 events. 2517/4238 cut-off events. For 479723/479723 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 27412 event pairs, 426 based on Foata normal form. 2/4174 useless extension candidates. Maximal degree in co-relation 51983. Up to 3962 conditions per place. [2024-06-27 22:19:30,772 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 843 selfloop transitions, 54 changer transitions 0/911 dead transitions. [2024-06-27 22:19:30,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 911 transitions, 21748 flow [2024-06-27 22:19:30,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:30,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:30,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 22:19:30,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-27 22:19:30,774 INFO L175 Difference]: Start difference. First operand has 490 places, 883 transitions, 19248 flow. Second operand 9 states and 157 transitions. [2024-06-27 22:19:30,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 911 transitions, 21748 flow [2024-06-27 22:19:33,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 911 transitions, 21518 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:33,113 INFO L231 Difference]: Finished difference. Result has 495 places, 891 transitions, 19486 flow [2024-06-27 22:19:33,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=19020, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=883, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=833, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19486, PETRI_PLACES=495, PETRI_TRANSITIONS=891} [2024-06-27 22:19:33,114 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 455 predicate places. [2024-06-27 22:19:33,114 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 891 transitions, 19486 flow [2024-06-27 22:19:33,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:33,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:33,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:33,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 22:19:33,115 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:33,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:33,115 INFO L85 PathProgramCache]: Analyzing trace with hash -42719163, now seen corresponding path program 20 times [2024-06-27 22:19:33,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:33,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335674191] [2024-06-27 22:19:33,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:33,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:34,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:34,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335674191] [2024-06-27 22:19:34,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335674191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:34,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:34,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:19:34,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468158358] [2024-06-27 22:19:34,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:34,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:19:34,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:34,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:19:34,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:19:34,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:19:34,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 891 transitions, 19486 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:34,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:34,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:19:34,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:36,742 INFO L124 PetriNetUnfolderBase]: 2846/4730 cut-off events. [2024-06-27 22:19:36,743 INFO L125 PetriNetUnfolderBase]: For 505857/505857 co-relation queries the response was YES. [2024-06-27 22:19:36,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57024 conditions, 4730 events. 2846/4730 cut-off events. For 505857/505857 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 30144 event pairs, 480 based on Foata normal form. 2/4688 useless extension candidates. Maximal degree in co-relation 56792. Up to 4478 conditions per place. [2024-06-27 22:19:36,825 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 861 selfloop transitions, 49 changer transitions 0/916 dead transitions. [2024-06-27 22:19:36,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 916 transitions, 21724 flow [2024-06-27 22:19:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 22:19:36,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-27 22:19:36,827 INFO L175 Difference]: Start difference. First operand has 495 places, 891 transitions, 19486 flow. Second operand 9 states and 146 transitions. [2024-06-27 22:19:36,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 916 transitions, 21724 flow [2024-06-27 22:19:39,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 916 transitions, 21403 flow, removed 121 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:39,092 INFO L231 Difference]: Finished difference. Result has 500 places, 894 transitions, 19589 flow [2024-06-27 22:19:39,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=19165, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=891, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=842, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19589, PETRI_PLACES=500, PETRI_TRANSITIONS=894} [2024-06-27 22:19:39,093 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 460 predicate places. [2024-06-27 22:19:39,093 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 894 transitions, 19589 flow [2024-06-27 22:19:39,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:39,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:39,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:39,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 22:19:39,094 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:39,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:39,094 INFO L85 PathProgramCache]: Analyzing trace with hash -49152903, now seen corresponding path program 21 times [2024-06-27 22:19:39,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:39,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587493494] [2024-06-27 22:19:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:39,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:40,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:40,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587493494] [2024-06-27 22:19:40,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587493494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:40,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:40,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:19:40,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714549592] [2024-06-27 22:19:40,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:40,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:19:40,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:40,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:19:40,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:19:40,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:19:40,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 894 transitions, 19589 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:40,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:40,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:19:40,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:42,357 INFO L124 PetriNetUnfolderBase]: 2861/4747 cut-off events. [2024-06-27 22:19:42,357 INFO L125 PetriNetUnfolderBase]: For 525106/525106 co-relation queries the response was YES. [2024-06-27 22:19:42,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57562 conditions, 4747 events. 2861/4747 cut-off events. For 525106/525106 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 30174 event pairs, 335 based on Foata normal form. 2/4702 useless extension candidates. Maximal degree in co-relation 57328. Up to 4229 conditions per place. [2024-06-27 22:19:42,452 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 755 selfloop transitions, 158 changer transitions 0/919 dead transitions. [2024-06-27 22:19:42,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 919 transitions, 21805 flow [2024-06-27 22:19:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:42,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:42,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 22:19:42,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-27 22:19:42,454 INFO L175 Difference]: Start difference. First operand has 500 places, 894 transitions, 19589 flow. Second operand 9 states and 148 transitions. [2024-06-27 22:19:42,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 919 transitions, 21805 flow [2024-06-27 22:19:45,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 919 transitions, 21352 flow, removed 160 selfloop flow, removed 8 redundant places. [2024-06-27 22:19:45,252 INFO L231 Difference]: Finished difference. Result has 501 places, 896 transitions, 19665 flow [2024-06-27 22:19:45,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=19136, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=894, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=736, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19665, PETRI_PLACES=501, PETRI_TRANSITIONS=896} [2024-06-27 22:19:45,253 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 461 predicate places. [2024-06-27 22:19:45,253 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 896 transitions, 19665 flow [2024-06-27 22:19:45,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:45,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:45,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:45,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 22:19:45,254 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:45,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:45,254 INFO L85 PathProgramCache]: Analyzing trace with hash -42712467, now seen corresponding path program 4 times [2024-06-27 22:19:45,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:45,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737442554] [2024-06-27 22:19:45,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:45,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:46,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:46,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737442554] [2024-06-27 22:19:46,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737442554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:46,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:46,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:46,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542773547] [2024-06-27 22:19:46,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:46,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:46,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:46,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:46,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:46,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:19:46,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 896 transitions, 19665 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:46,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:46,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:19:46,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:48,182 INFO L124 PetriNetUnfolderBase]: 2539/4275 cut-off events. [2024-06-27 22:19:48,182 INFO L125 PetriNetUnfolderBase]: For 495534/495534 co-relation queries the response was YES. [2024-06-27 22:19:48,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52859 conditions, 4275 events. 2539/4275 cut-off events. For 495534/495534 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 27645 event pairs, 439 based on Foata normal form. 1/4210 useless extension candidates. Maximal degree in co-relation 52626. Up to 3893 conditions per place. [2024-06-27 22:19:48,265 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 816 selfloop transitions, 92 changer transitions 0/922 dead transitions. [2024-06-27 22:19:48,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 922 transitions, 22401 flow [2024-06-27 22:19:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:48,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:48,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-27 22:19:48,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:19:48,266 INFO L175 Difference]: Start difference. First operand has 501 places, 896 transitions, 19665 flow. Second operand 8 states and 150 transitions. [2024-06-27 22:19:48,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 922 transitions, 22401 flow [2024-06-27 22:19:51,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 922 transitions, 21938 flow, removed 75 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:51,029 INFO L231 Difference]: Finished difference. Result has 502 places, 901 transitions, 19617 flow [2024-06-27 22:19:51,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=19202, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=808, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19617, PETRI_PLACES=502, PETRI_TRANSITIONS=901} [2024-06-27 22:19:51,030 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 462 predicate places. [2024-06-27 22:19:51,030 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 901 transitions, 19617 flow [2024-06-27 22:19:51,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:51,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:51,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:51,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 22:19:51,031 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:51,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:51,031 INFO L85 PathProgramCache]: Analyzing trace with hash -42712219, now seen corresponding path program 7 times [2024-06-27 22:19:51,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:51,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301215278] [2024-06-27 22:19:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:51,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:52,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:52,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:52,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301215278] [2024-06-27 22:19:52,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301215278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:52,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:52,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:19:52,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976374574] [2024-06-27 22:19:52,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:52,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:19:52,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:52,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:19:52,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:19:52,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:19:52,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 901 transitions, 19617 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:52,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:52,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:19:52,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:54,422 INFO L124 PetriNetUnfolderBase]: 2535/4269 cut-off events. [2024-06-27 22:19:54,422 INFO L125 PetriNetUnfolderBase]: For 482034/482034 co-relation queries the response was YES. [2024-06-27 22:19:54,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52219 conditions, 4269 events. 2535/4269 cut-off events. For 482034/482034 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 27603 event pairs, 431 based on Foata normal form. 2/4205 useless extension candidates. Maximal degree in co-relation 51985. Up to 3913 conditions per place. [2024-06-27 22:19:54,518 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 855 selfloop transitions, 62 changer transitions 0/930 dead transitions. [2024-06-27 22:19:54,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 930 transitions, 22167 flow [2024-06-27 22:19:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:54,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 22:19:54,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-27 22:19:54,520 INFO L175 Difference]: Start difference. First operand has 502 places, 901 transitions, 19617 flow. Second operand 9 states and 158 transitions. [2024-06-27 22:19:54,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 930 transitions, 22167 flow [2024-06-27 22:19:57,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 930 transitions, 21772 flow, removed 140 selfloop flow, removed 5 redundant places. [2024-06-27 22:19:57,115 INFO L231 Difference]: Finished difference. Result has 507 places, 903 transitions, 19411 flow [2024-06-27 22:19:57,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=19246, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=901, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=839, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19411, PETRI_PLACES=507, PETRI_TRANSITIONS=903} [2024-06-27 22:19:57,116 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 467 predicate places. [2024-06-27 22:19:57,116 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 903 transitions, 19411 flow [2024-06-27 22:19:57,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:57,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:57,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:57,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 22:19:57,116 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:19:57,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:57,117 INFO L85 PathProgramCache]: Analyzing trace with hash -49148253, now seen corresponding path program 22 times [2024-06-27 22:19:57,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:57,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856274712] [2024-06-27 22:19:57,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:57,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:58,381 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 22:19:58,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:58,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856274712] [2024-06-27 22:19:58,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856274712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:58,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:58,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:19:58,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011562985] [2024-06-27 22:19:58,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:58,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:19:58,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:58,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:19:58,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:19:58,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:19:58,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 903 transitions, 19411 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:58,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:58,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:19:58,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:00,470 INFO L124 PetriNetUnfolderBase]: 2857/4741 cut-off events. [2024-06-27 22:20:00,471 INFO L125 PetriNetUnfolderBase]: For 481651/481651 co-relation queries the response was YES. [2024-06-27 22:20:00,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55976 conditions, 4741 events. 2857/4741 cut-off events. For 481651/481651 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 30094 event pairs, 339 based on Foata normal form. 2/4696 useless extension candidates. Maximal degree in co-relation 55741. Up to 4209 conditions per place. [2024-06-27 22:20:00,559 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 757 selfloop transitions, 168 changer transitions 0/931 dead transitions. [2024-06-27 22:20:00,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 931 transitions, 21729 flow [2024-06-27 22:20:00,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:00,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:00,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 22:20:00,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 22:20:00,561 INFO L175 Difference]: Start difference. First operand has 507 places, 903 transitions, 19411 flow. Second operand 9 states and 150 transitions. [2024-06-27 22:20:00,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 931 transitions, 21729 flow [2024-06-27 22:20:03,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 931 transitions, 21613 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:03,167 INFO L231 Difference]: Finished difference. Result has 511 places, 908 transitions, 19911 flow [2024-06-27 22:20:03,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=19295, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=903, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19911, PETRI_PLACES=511, PETRI_TRANSITIONS=908} [2024-06-27 22:20:03,167 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 471 predicate places. [2024-06-27 22:20:03,167 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 908 transitions, 19911 flow [2024-06-27 22:20:03,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:03,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:03,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:03,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 22:20:03,168 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:03,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:03,168 INFO L85 PathProgramCache]: Analyzing trace with hash -48968329, now seen corresponding path program 8 times [2024-06-27 22:20:03,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:03,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402902674] [2024-06-27 22:20:03,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:03,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:04,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:04,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402902674] [2024-06-27 22:20:04,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402902674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:04,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:04,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:20:04,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040396956] [2024-06-27 22:20:04,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:04,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:20:04,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:20:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:20:04,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:20:04,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 908 transitions, 19911 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:04,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:04,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:20:04,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:06,073 INFO L124 PetriNetUnfolderBase]: 2537/4246 cut-off events. [2024-06-27 22:20:06,073 INFO L125 PetriNetUnfolderBase]: For 472433/472433 co-relation queries the response was YES. [2024-06-27 22:20:06,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52037 conditions, 4246 events. 2537/4246 cut-off events. For 472433/472433 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 27365 event pairs, 332 based on Foata normal form. 2/4192 useless extension candidates. Maximal degree in co-relation 51800. Up to 3677 conditions per place. [2024-06-27 22:20:06,158 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 750 selfloop transitions, 170 changer transitions 0/934 dead transitions. [2024-06-27 22:20:06,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 934 transitions, 22383 flow [2024-06-27 22:20:06,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 22:20:06,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-06-27 22:20:06,159 INFO L175 Difference]: Start difference. First operand has 511 places, 908 transitions, 19911 flow. Second operand 9 states and 164 transitions. [2024-06-27 22:20:06,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 934 transitions, 22383 flow [2024-06-27 22:20:08,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 934 transitions, 21913 flow, removed 77 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:08,765 INFO L231 Difference]: Finished difference. Result has 514 places, 911 transitions, 19979 flow [2024-06-27 22:20:08,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=19441, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=908, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=738, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19979, PETRI_PLACES=514, PETRI_TRANSITIONS=911} [2024-06-27 22:20:08,766 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 474 predicate places. [2024-06-27 22:20:08,766 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 911 transitions, 19979 flow [2024-06-27 22:20:08,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:08,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:08,767 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 22:20:08,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 22:20:08,767 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:08,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:08,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1559661999, now seen corresponding path program 1 times [2024-06-27 22:20:08,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:08,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738153414] [2024-06-27 22:20:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:08,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:08,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:10,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:10,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738153414] [2024-06-27 22:20:10,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738153414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:10,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:10,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:20:10,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730926140] [2024-06-27 22:20:10,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:10,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:20:10,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:10,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:20:10,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:20:10,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:20:10,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 911 transitions, 19979 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:10,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:10,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:20:10,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:11,852 INFO L124 PetriNetUnfolderBase]: 2614/4395 cut-off events. [2024-06-27 22:20:11,852 INFO L125 PetriNetUnfolderBase]: For 544371/544371 co-relation queries the response was YES. [2024-06-27 22:20:11,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54216 conditions, 4395 events. 2614/4395 cut-off events. For 544371/544371 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 28639 event pairs, 423 based on Foata normal form. 8/4346 useless extension candidates. Maximal degree in co-relation 53978. Up to 3693 conditions per place. [2024-06-27 22:20:11,942 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 851 selfloop transitions, 85 changer transitions 0/949 dead transitions. [2024-06-27 22:20:11,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 949 transitions, 22822 flow [2024-06-27 22:20:11,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:11,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:20:11,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-27 22:20:11,944 INFO L175 Difference]: Start difference. First operand has 514 places, 911 transitions, 19979 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:20:11,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 949 transitions, 22822 flow [2024-06-27 22:20:14,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 949 transitions, 22338 flow, removed 74 selfloop flow, removed 7 redundant places. [2024-06-27 22:20:14,829 INFO L231 Difference]: Finished difference. Result has 519 places, 919 transitions, 20354 flow [2024-06-27 22:20:14,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=19495, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=911, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=827, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20354, PETRI_PLACES=519, PETRI_TRANSITIONS=919} [2024-06-27 22:20:14,829 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 479 predicate places. [2024-06-27 22:20:14,830 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 919 transitions, 20354 flow [2024-06-27 22:20:14,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:14,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:14,830 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 22:20:14,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 22:20:14,831 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:14,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:14,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2043736517, now seen corresponding path program 2 times [2024-06-27 22:20:14,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:14,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562005699] [2024-06-27 22:20:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:14,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:16,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:16,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:16,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562005699] [2024-06-27 22:20:16,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562005699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:16,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:16,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:20:16,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894222570] [2024-06-27 22:20:16,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:16,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:20:16,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:16,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:20:16,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:20:16,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:20:16,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 919 transitions, 20354 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:16,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:16,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:20:16,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:18,550 INFO L124 PetriNetUnfolderBase]: 3201/5404 cut-off events. [2024-06-27 22:20:18,550 INFO L125 PetriNetUnfolderBase]: For 746587/746587 co-relation queries the response was YES. [2024-06-27 22:20:18,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67068 conditions, 5404 events. 3201/5404 cut-off events. For 746587/746587 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 35796 event pairs, 491 based on Foata normal form. 8/5356 useless extension candidates. Maximal degree in co-relation 66826. Up to 3886 conditions per place. [2024-06-27 22:20:18,648 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 840 selfloop transitions, 148 changer transitions 0/994 dead transitions. [2024-06-27 22:20:18,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 994 transitions, 24443 flow [2024-06-27 22:20:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:18,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:18,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 22:20:18,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-06-27 22:20:18,649 INFO L175 Difference]: Start difference. First operand has 519 places, 919 transitions, 20354 flow. Second operand 9 states and 167 transitions. [2024-06-27 22:20:18,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 994 transitions, 24443 flow [2024-06-27 22:20:21,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 994 transitions, 23963 flow, removed 210 selfloop flow, removed 3 redundant places. [2024-06-27 22:20:21,960 INFO L231 Difference]: Finished difference. Result has 528 places, 933 transitions, 20843 flow [2024-06-27 22:20:21,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=19874, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=771, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20843, PETRI_PLACES=528, PETRI_TRANSITIONS=933} [2024-06-27 22:20:21,961 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 488 predicate places. [2024-06-27 22:20:21,961 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 933 transitions, 20843 flow [2024-06-27 22:20:21,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:21,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:21,961 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 22:20:21,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 22:20:21,962 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:21,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:21,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1415169083, now seen corresponding path program 3 times [2024-06-27 22:20:21,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:21,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200770141] [2024-06-27 22:20:21,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:21,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:23,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:23,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:23,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200770141] [2024-06-27 22:20:23,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200770141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:23,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:23,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:20:23,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736827839] [2024-06-27 22:20:23,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:23,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:20:23,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:23,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:20:23,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:20:23,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:20:23,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 933 transitions, 20843 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:23,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:23,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:20:23,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:25,753 INFO L124 PetriNetUnfolderBase]: 3286/5579 cut-off events. [2024-06-27 22:20:25,753 INFO L125 PetriNetUnfolderBase]: For 777378/777378 co-relation queries the response was YES. [2024-06-27 22:20:25,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69718 conditions, 5579 events. 3286/5579 cut-off events. For 777378/777378 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 37389 event pairs, 681 based on Foata normal form. 8/5523 useless extension candidates. Maximal degree in co-relation 69471. Up to 4840 conditions per place. [2024-06-27 22:20:25,909 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 860 selfloop transitions, 113 changer transitions 0/979 dead transitions. [2024-06-27 22:20:25,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 979 transitions, 23764 flow [2024-06-27 22:20:25,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 22:20:25,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 22:20:25,910 INFO L175 Difference]: Start difference. First operand has 528 places, 933 transitions, 20843 flow. Second operand 9 states and 156 transitions. [2024-06-27 22:20:25,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 979 transitions, 23764 flow [2024-06-27 22:20:29,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 979 transitions, 23596 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 22:20:29,946 INFO L231 Difference]: Finished difference. Result has 535 places, 942 transitions, 21508 flow [2024-06-27 22:20:29,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=20675, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=821, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21508, PETRI_PLACES=535, PETRI_TRANSITIONS=942} [2024-06-27 22:20:29,947 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 495 predicate places. [2024-06-27 22:20:29,947 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 942 transitions, 21508 flow [2024-06-27 22:20:29,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:29,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:29,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:29,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 22:20:29,948 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:29,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1419787463, now seen corresponding path program 4 times [2024-06-27 22:20:29,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:29,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034456825] [2024-06-27 22:20:29,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:29,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:31,156 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 22:20:31,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:31,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034456825] [2024-06-27 22:20:31,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034456825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:31,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:31,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:20:31,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420908984] [2024-06-27 22:20:31,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:31,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:20:31,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:31,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:20:31,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:20:31,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:20:31,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 942 transitions, 21508 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:31,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:31,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:20:31,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:33,473 INFO L124 PetriNetUnfolderBase]: 3052/5305 cut-off events. [2024-06-27 22:20:33,473 INFO L125 PetriNetUnfolderBase]: For 860638/860638 co-relation queries the response was YES. [2024-06-27 22:20:33,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67515 conditions, 5305 events. 3052/5305 cut-off events. For 860638/860638 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 36484 event pairs, 701 based on Foata normal form. 22/5235 useless extension candidates. Maximal degree in co-relation 67266. Up to 4028 conditions per place. [2024-06-27 22:20:33,580 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 792 selfloop transitions, 175 changer transitions 0/981 dead transitions. [2024-06-27 22:20:33,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 981 transitions, 24498 flow [2024-06-27 22:20:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:33,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 22:20:33,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-27 22:20:33,581 INFO L175 Difference]: Start difference. First operand has 535 places, 942 transitions, 21508 flow. Second operand 9 states and 174 transitions. [2024-06-27 22:20:33,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 981 transitions, 24498 flow [2024-06-27 22:20:37,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 981 transitions, 23971 flow, removed 160 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:37,489 INFO L231 Difference]: Finished difference. Result has 539 places, 942 transitions, 21341 flow [2024-06-27 22:20:37,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=20981, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=767, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=21341, PETRI_PLACES=539, PETRI_TRANSITIONS=942} [2024-06-27 22:20:37,490 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 499 predicate places. [2024-06-27 22:20:37,490 INFO L495 AbstractCegarLoop]: Abstraction has has 539 places, 942 transitions, 21341 flow [2024-06-27 22:20:37,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:37,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:37,490 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 22:20:37,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 22:20:37,491 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:37,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1046693727, now seen corresponding path program 5 times [2024-06-27 22:20:37,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:37,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828644536] [2024-06-27 22:20:37,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:37,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:38,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:38,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828644536] [2024-06-27 22:20:38,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828644536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:38,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:38,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:20:38,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013312547] [2024-06-27 22:20:38,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:38,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:20:38,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:38,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:20:38,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:20:39,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:20:39,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 942 transitions, 21341 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:39,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:39,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:20:39,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:41,449 INFO L124 PetriNetUnfolderBase]: 3232/5599 cut-off events. [2024-06-27 22:20:41,449 INFO L125 PetriNetUnfolderBase]: For 856940/856940 co-relation queries the response was YES. [2024-06-27 22:20:41,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72575 conditions, 5599 events. 3232/5599 cut-off events. For 856940/856940 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 39091 event pairs, 851 based on Foata normal form. 8/5518 useless extension candidates. Maximal degree in co-relation 72323. Up to 4261 conditions per place. [2024-06-27 22:20:41,570 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 814 selfloop transitions, 159 changer transitions 0/986 dead transitions. [2024-06-27 22:20:41,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 986 transitions, 24526 flow [2024-06-27 22:20:41,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:41,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:20:41,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 22:20:41,571 INFO L175 Difference]: Start difference. First operand has 539 places, 942 transitions, 21341 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:20:41,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 986 transitions, 24526 flow [2024-06-27 22:20:45,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 986 transitions, 24273 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 22:20:45,202 INFO L231 Difference]: Finished difference. Result has 543 places, 950 transitions, 22048 flow [2024-06-27 22:20:45,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=21088, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22048, PETRI_PLACES=543, PETRI_TRANSITIONS=950} [2024-06-27 22:20:45,203 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 503 predicate places. [2024-06-27 22:20:45,203 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 950 transitions, 22048 flow [2024-06-27 22:20:45,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:45,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:45,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:20:45,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 22:20:45,204 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:45,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:45,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1051565997, now seen corresponding path program 6 times [2024-06-27 22:20:45,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:45,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034415489] [2024-06-27 22:20:45,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:45,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:46,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:46,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:46,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034415489] [2024-06-27 22:20:46,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034415489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:46,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:46,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:20:46,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484519051] [2024-06-27 22:20:46,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:46,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:20:46,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:46,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:20:46,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:20:46,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:20:46,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 950 transitions, 22048 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:46,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:46,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:20:46,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:49,253 INFO L124 PetriNetUnfolderBase]: 3251/5642 cut-off events. [2024-06-27 22:20:49,253 INFO L125 PetriNetUnfolderBase]: For 839808/839808 co-relation queries the response was YES. [2024-06-27 22:20:49,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73800 conditions, 5642 events. 3251/5642 cut-off events. For 839808/839808 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 39439 event pairs, 1036 based on Foata normal form. 2/5549 useless extension candidates. Maximal degree in co-relation 73546. Up to 4995 conditions per place. [2024-06-27 22:20:49,378 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 855 selfloop transitions, 115 changer transitions 0/983 dead transitions. [2024-06-27 22:20:49,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 983 transitions, 24789 flow [2024-06-27 22:20:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:49,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 22:20:49,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-06-27 22:20:49,380 INFO L175 Difference]: Start difference. First operand has 543 places, 950 transitions, 22048 flow. Second operand 9 states and 154 transitions. [2024-06-27 22:20:49,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 983 transitions, 24789 flow [2024-06-27 22:20:53,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 983 transitions, 24360 flow, removed 126 selfloop flow, removed 5 redundant places. [2024-06-27 22:20:53,278 INFO L231 Difference]: Finished difference. Result has 549 places, 959 transitions, 22652 flow [2024-06-27 22:20:53,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=21619, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=950, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=837, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22652, PETRI_PLACES=549, PETRI_TRANSITIONS=959} [2024-06-27 22:20:53,279 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 509 predicate places. [2024-06-27 22:20:53,279 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 959 transitions, 22652 flow [2024-06-27 22:20:53,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:53,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:20:53,279 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 22:20:53,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 22:20:53,279 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:20:53,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:20:53,280 INFO L85 PathProgramCache]: Analyzing trace with hash 2054762653, now seen corresponding path program 7 times [2024-06-27 22:20:53,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:20:53,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049332016] [2024-06-27 22:20:53,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:20:53,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:20:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:20:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:20:54,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:20:54,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049332016] [2024-06-27 22:20:54,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049332016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:20:54,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:20:54,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:20:54,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940410854] [2024-06-27 22:20:54,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:20:54,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:20:54,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:20:54,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:20:54,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:20:54,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:20:54,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 959 transitions, 22652 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:20:54,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:20:54,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:20:54,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:20:56,826 INFO L124 PetriNetUnfolderBase]: 3269/5684 cut-off events. [2024-06-27 22:20:56,826 INFO L125 PetriNetUnfolderBase]: For 802666/802666 co-relation queries the response was YES. [2024-06-27 22:20:56,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73528 conditions, 5684 events. 3269/5684 cut-off events. For 802666/802666 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 39887 event pairs, 1141 based on Foata normal form. 2/5590 useless extension candidates. Maximal degree in co-relation 73271. Up to 5115 conditions per place. [2024-06-27 22:20:56,945 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 858 selfloop transitions, 113 changer transitions 0/985 dead transitions. [2024-06-27 22:20:56,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 985 transitions, 25162 flow [2024-06-27 22:20:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:20:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:20:56,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-27 22:20:56,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2024-06-27 22:20:56,947 INFO L175 Difference]: Start difference. First operand has 549 places, 959 transitions, 22652 flow. Second operand 9 states and 166 transitions. [2024-06-27 22:20:56,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 985 transitions, 25162 flow [2024-06-27 22:21:01,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 985 transitions, 24353 flow, removed 345 selfloop flow, removed 4 redundant places. [2024-06-27 22:21:01,210 INFO L231 Difference]: Finished difference. Result has 554 places, 961 transitions, 22252 flow [2024-06-27 22:21:01,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=21843, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=959, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22252, PETRI_PLACES=554, PETRI_TRANSITIONS=961} [2024-06-27 22:21:01,210 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 514 predicate places. [2024-06-27 22:21:01,210 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 961 transitions, 22252 flow [2024-06-27 22:21:01,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:01,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:01,211 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 22:21:01,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 22:21:01,211 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:01,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:01,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1842204919, now seen corresponding path program 8 times [2024-06-27 22:21:01,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:01,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096186195] [2024-06-27 22:21:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:01,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:02,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:02,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:02,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096186195] [2024-06-27 22:21:02,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096186195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:02,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:02,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:02,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736618612] [2024-06-27 22:21:02,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:02,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:02,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:02,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:02,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:21:02,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 961 transitions, 22252 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:02,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:02,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:21:02,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:05,231 INFO L124 PetriNetUnfolderBase]: 3383/5882 cut-off events. [2024-06-27 22:21:05,232 INFO L125 PetriNetUnfolderBase]: For 952864/952864 co-relation queries the response was YES. [2024-06-27 22:21:05,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77973 conditions, 5882 events. 3383/5882 cut-off events. For 952864/952864 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 41623 event pairs, 1045 based on Foata normal form. 2/5788 useless extension candidates. Maximal degree in co-relation 77714. Up to 5061 conditions per place. [2024-06-27 22:21:05,357 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 872 selfloop transitions, 110 changer transitions 0/996 dead transitions. [2024-06-27 22:21:05,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 996 transitions, 25494 flow [2024-06-27 22:21:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:05,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:05,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 22:21:05,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 22:21:05,359 INFO L175 Difference]: Start difference. First operand has 554 places, 961 transitions, 22252 flow. Second operand 9 states and 171 transitions. [2024-06-27 22:21:05,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 996 transitions, 25494 flow [2024-06-27 22:21:09,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 996 transitions, 25145 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-27 22:21:09,785 INFO L231 Difference]: Finished difference. Result has 557 places, 966 transitions, 22616 flow [2024-06-27 22:21:09,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=21903, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=853, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22616, PETRI_PLACES=557, PETRI_TRANSITIONS=966} [2024-06-27 22:21:09,785 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 517 predicate places. [2024-06-27 22:21:09,785 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 966 transitions, 22616 flow [2024-06-27 22:21:09,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:09,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:09,786 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 22:21:09,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 22:21:09,786 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:09,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:09,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2041650859, now seen corresponding path program 9 times [2024-06-27 22:21:09,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:09,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905117865] [2024-06-27 22:21:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:09,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:10,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:10,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905117865] [2024-06-27 22:21:10,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905117865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:10,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:10,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:21:10,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772533096] [2024-06-27 22:21:10,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:10,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:21:10,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:10,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:21:10,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:21:11,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:21:11,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 966 transitions, 22616 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:11,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:11,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:21:11,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:13,416 INFO L124 PetriNetUnfolderBase]: 3402/5901 cut-off events. [2024-06-27 22:21:13,416 INFO L125 PetriNetUnfolderBase]: For 963301/963301 co-relation queries the response was YES. [2024-06-27 22:21:13,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78933 conditions, 5901 events. 3402/5901 cut-off events. For 963301/963301 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 41601 event pairs, 951 based on Foata normal form. 2/5816 useless extension candidates. Maximal degree in co-relation 78672. Up to 5199 conditions per place. [2024-06-27 22:21:13,559 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 821 selfloop transitions, 160 changer transitions 0/995 dead transitions. [2024-06-27 22:21:13,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 995 transitions, 25373 flow [2024-06-27 22:21:13,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 22:21:13,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49691358024691357 [2024-06-27 22:21:13,561 INFO L175 Difference]: Start difference. First operand has 557 places, 966 transitions, 22616 flow. Second operand 9 states and 161 transitions. [2024-06-27 22:21:13,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 995 transitions, 25373 flow [2024-06-27 22:21:18,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 995 transitions, 24956 flow, removed 104 selfloop flow, removed 8 redundant places. [2024-06-27 22:21:18,451 INFO L231 Difference]: Finished difference. Result has 560 places, 971 transitions, 23028 flow [2024-06-27 22:21:18,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=22205, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=966, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=807, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23028, PETRI_PLACES=560, PETRI_TRANSITIONS=971} [2024-06-27 22:21:18,452 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 520 predicate places. [2024-06-27 22:21:18,452 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 971 transitions, 23028 flow [2024-06-27 22:21:18,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:18,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:18,452 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 22:21:18,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 22:21:18,452 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:18,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:18,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1616993733, now seen corresponding path program 10 times [2024-06-27 22:21:18,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:18,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098356332] [2024-06-27 22:21:18,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:18,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:19,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:19,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:19,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098356332] [2024-06-27 22:21:19,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098356332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:19,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:19,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:19,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120553657] [2024-06-27 22:21:19,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:19,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:19,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:19,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:19,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:19,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:21:19,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 971 transitions, 23028 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:19,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:19,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:21:19,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:22,658 INFO L124 PetriNetUnfolderBase]: 3548/6153 cut-off events. [2024-06-27 22:21:22,658 INFO L125 PetriNetUnfolderBase]: For 1175682/1175682 co-relation queries the response was YES. [2024-06-27 22:21:22,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84231 conditions, 6153 events. 3548/6153 cut-off events. For 1175682/1175682 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 43757 event pairs, 1099 based on Foata normal form. 8/6076 useless extension candidates. Maximal degree in co-relation 83969. Up to 5105 conditions per place. [2024-06-27 22:21:22,790 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 815 selfloop transitions, 180 changer transitions 0/1009 dead transitions. [2024-06-27 22:21:22,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 1009 transitions, 26372 flow [2024-06-27 22:21:22,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:22,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:22,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-27 22:21:22,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5339506172839507 [2024-06-27 22:21:22,792 INFO L175 Difference]: Start difference. First operand has 560 places, 971 transitions, 23028 flow. Second operand 9 states and 173 transitions. [2024-06-27 22:21:22,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 1009 transitions, 26372 flow [2024-06-27 22:21:27,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 1009 transitions, 25836 flow, removed 177 selfloop flow, removed 4 redundant places. [2024-06-27 22:21:27,834 INFO L231 Difference]: Finished difference. Result has 566 places, 974 transitions, 23266 flow [2024-06-27 22:21:27,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=22492, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=792, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23266, PETRI_PLACES=566, PETRI_TRANSITIONS=974} [2024-06-27 22:21:27,834 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 526 predicate places. [2024-06-27 22:21:27,835 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 974 transitions, 23266 flow [2024-06-27 22:21:27,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:27,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:27,835 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 22:21:27,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 22:21:27,835 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:27,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1418303735, now seen corresponding path program 1 times [2024-06-27 22:21:27,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:27,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366934431] [2024-06-27 22:21:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:27,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:29,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:29,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366934431] [2024-06-27 22:21:29,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366934431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:29,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:29,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:21:29,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427356039] [2024-06-27 22:21:29,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:29,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:21:29,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:29,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:21:29,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:21:29,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:21:29,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 974 transitions, 23266 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:29,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:29,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:21:29,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:32,569 INFO L124 PetriNetUnfolderBase]: 3613/6288 cut-off events. [2024-06-27 22:21:32,569 INFO L125 PetriNetUnfolderBase]: For 1224420/1224420 co-relation queries the response was YES. [2024-06-27 22:21:32,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86353 conditions, 6288 events. 3613/6288 cut-off events. For 1224420/1224420 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 45153 event pairs, 1326 based on Foata normal form. 10/6202 useless extension candidates. Maximal degree in co-relation 86087. Up to 5616 conditions per place. [2024-06-27 22:21:32,712 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 881 selfloop transitions, 113 changer transitions 0/1007 dead transitions. [2024-06-27 22:21:32,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 1007 transitions, 26060 flow [2024-06-27 22:21:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:21:32,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:21:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 22:21:32,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-27 22:21:32,714 INFO L175 Difference]: Start difference. First operand has 566 places, 974 transitions, 23266 flow. Second operand 11 states and 186 transitions. [2024-06-27 22:21:32,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 1007 transitions, 26060 flow [2024-06-27 22:21:37,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 1007 transitions, 25699 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-27 22:21:37,980 INFO L231 Difference]: Finished difference. Result has 572 places, 975 transitions, 23282 flow [2024-06-27 22:21:37,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=22905, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=974, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=861, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23282, PETRI_PLACES=572, PETRI_TRANSITIONS=975} [2024-06-27 22:21:37,981 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 532 predicate places. [2024-06-27 22:21:37,982 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 975 transitions, 23282 flow [2024-06-27 22:21:37,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:37,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:37,982 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 22:21:37,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 22:21:37,982 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:37,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:37,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1823652753, now seen corresponding path program 11 times [2024-06-27 22:21:37,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:37,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307725586] [2024-06-27 22:21:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:37,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:39,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:39,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307725586] [2024-06-27 22:21:39,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307725586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:39,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:39,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:21:39,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47305886] [2024-06-27 22:21:39,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:39,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:21:39,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:39,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:21:39,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:21:39,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:21:39,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 975 transitions, 23282 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:39,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:39,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:21:39,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:42,030 INFO L124 PetriNetUnfolderBase]: 3597/6260 cut-off events. [2024-06-27 22:21:42,031 INFO L125 PetriNetUnfolderBase]: For 1133924/1133924 co-relation queries the response was YES. [2024-06-27 22:21:42,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84457 conditions, 6260 events. 3597/6260 cut-off events. For 1133924/1133924 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 44926 event pairs, 1303 based on Foata normal form. 12/6176 useless extension candidates. Maximal degree in co-relation 84189. Up to 5565 conditions per place. [2024-06-27 22:21:42,174 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 880 selfloop transitions, 111 changer transitions 0/1005 dead transitions. [2024-06-27 22:21:42,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 1005 transitions, 26007 flow [2024-06-27 22:21:42,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:21:42,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:21:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:21:42,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216049382716049 [2024-06-27 22:21:42,176 INFO L175 Difference]: Start difference. First operand has 572 places, 975 transitions, 23282 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:21:42,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 1005 transitions, 26007 flow [2024-06-27 22:21:47,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 1005 transitions, 25556 flow, removed 115 selfloop flow, removed 9 redundant places. [2024-06-27 22:21:47,946 INFO L231 Difference]: Finished difference. Result has 572 places, 976 transitions, 23186 flow [2024-06-27 22:21:47,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=22883, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=864, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23186, PETRI_PLACES=572, PETRI_TRANSITIONS=976} [2024-06-27 22:21:47,946 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 532 predicate places. [2024-06-27 22:21:47,946 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 976 transitions, 23186 flow [2024-06-27 22:21:47,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:47,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:47,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:21:47,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 22:21:47,947 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:47,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:47,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1823929459, now seen corresponding path program 2 times [2024-06-27 22:21:47,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:47,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223387940] [2024-06-27 22:21:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:47,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:21:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:21:49,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:21:49,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223387940] [2024-06-27 22:21:49,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223387940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:21:49,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:21:49,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:21:49,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246297902] [2024-06-27 22:21:49,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:21:49,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:21:49,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:21:49,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:21:49,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:21:50,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:21:50,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 976 transitions, 23186 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:50,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:21:50,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:21:50,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:21:53,296 INFO L124 PetriNetUnfolderBase]: 3719/6478 cut-off events. [2024-06-27 22:21:53,296 INFO L125 PetriNetUnfolderBase]: For 1235370/1235370 co-relation queries the response was YES. [2024-06-27 22:21:53,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88591 conditions, 6478 events. 3719/6478 cut-off events. For 1235370/1235370 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 46926 event pairs, 1163 based on Foata normal form. 8/6390 useless extension candidates. Maximal degree in co-relation 88322. Up to 5423 conditions per place. [2024-06-27 22:21:53,442 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 891 selfloop transitions, 120 changer transitions 0/1024 dead transitions. [2024-06-27 22:21:53,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 1024 transitions, 26925 flow [2024-06-27 22:21:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:21:53,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:21:53,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 22:21:53,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2024-06-27 22:21:53,443 INFO L175 Difference]: Start difference. First operand has 572 places, 976 transitions, 23186 flow. Second operand 10 states and 178 transitions. [2024-06-27 22:21:53,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 1024 transitions, 26925 flow [2024-06-27 22:21:59,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 1024 transitions, 26695 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 22:21:59,157 INFO L231 Difference]: Finished difference. Result has 576 places, 985 transitions, 23707 flow [2024-06-27 22:21:59,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=22968, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=976, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=863, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=23707, PETRI_PLACES=576, PETRI_TRANSITIONS=985} [2024-06-27 22:21:59,157 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 536 predicate places. [2024-06-27 22:21:59,158 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 985 transitions, 23707 flow [2024-06-27 22:21:59,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:21:59,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:21:59,159 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 22:21:59,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 22:21:59,160 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:21:59,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:21:59,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1616999313, now seen corresponding path program 12 times [2024-06-27 22:21:59,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:21:59,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725917565] [2024-06-27 22:21:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:21:59,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:21:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:00,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:00,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725917565] [2024-06-27 22:22:00,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725917565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:00,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:00,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:00,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214553543] [2024-06-27 22:22:00,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:00,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:00,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:00,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:00,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:00,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:22:00,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 985 transitions, 23707 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:00,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:00,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:22:00,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:03,440 INFO L124 PetriNetUnfolderBase]: 3703/6430 cut-off events. [2024-06-27 22:22:03,441 INFO L125 PetriNetUnfolderBase]: For 1183668/1183668 co-relation queries the response was YES. [2024-06-27 22:22:03,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87062 conditions, 6430 events. 3703/6430 cut-off events. For 1183668/1183668 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 46317 event pairs, 1113 based on Foata normal form. 12/6357 useless extension candidates. Maximal degree in co-relation 86792. Up to 5571 conditions per place. [2024-06-27 22:22:03,602 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 820 selfloop transitions, 183 changer transitions 0/1017 dead transitions. [2024-06-27 22:22:03,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 1017 transitions, 26534 flow [2024-06-27 22:22:03,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:03,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 22:22:03,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216049382716049 [2024-06-27 22:22:03,606 INFO L175 Difference]: Start difference. First operand has 576 places, 985 transitions, 23707 flow. Second operand 9 states and 169 transitions. [2024-06-27 22:22:03,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 1017 transitions, 26534 flow [2024-06-27 22:22:09,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 1017 transitions, 26213 flow, removed 120 selfloop flow, removed 4 redundant places. [2024-06-27 22:22:09,340 INFO L231 Difference]: Finished difference. Result has 581 places, 986 transitions, 23882 flow [2024-06-27 22:22:09,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=23434, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=985, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=802, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23882, PETRI_PLACES=581, PETRI_TRANSITIONS=986} [2024-06-27 22:22:09,341 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 541 predicate places. [2024-06-27 22:22:09,341 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 986 transitions, 23882 flow [2024-06-27 22:22:09,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:09,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:09,342 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 22:22:09,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 22:22:09,342 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:09,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:09,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2061920429, now seen corresponding path program 3 times [2024-06-27 22:22:09,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:09,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911806337] [2024-06-27 22:22:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:09,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:11,127 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 22:22:11,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911806337] [2024-06-27 22:22:11,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911806337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:11,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:11,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 22:22:11,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699215611] [2024-06-27 22:22:11,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:11,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 22:22:11,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 22:22:11,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 22:22:11,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:22:11,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 986 transitions, 23882 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:11,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:11,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:22:11,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:14,343 INFO L124 PetriNetUnfolderBase]: 3690/6427 cut-off events. [2024-06-27 22:22:14,343 INFO L125 PetriNetUnfolderBase]: For 1055423/1055423 co-relation queries the response was YES. [2024-06-27 22:22:14,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85289 conditions, 6427 events. 3690/6427 cut-off events. For 1055423/1055423 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 46530 event pairs, 1349 based on Foata normal form. 10/6341 useless extension candidates. Maximal degree in co-relation 85016. Up to 5755 conditions per place. [2024-06-27 22:22:14,488 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 889 selfloop transitions, 117 changer transitions 0/1019 dead transitions. [2024-06-27 22:22:14,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 1019 transitions, 26678 flow [2024-06-27 22:22:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:22:14,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:22:14,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:22:14,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-27 22:22:14,490 INFO L175 Difference]: Start difference. First operand has 581 places, 986 transitions, 23882 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:22:14,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 1019 transitions, 26678 flow [2024-06-27 22:22:20,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 1019 transitions, 26304 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 22:22:20,332 INFO L231 Difference]: Finished difference. Result has 586 places, 986 transitions, 23749 flow [2024-06-27 22:22:20,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=23508, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=869, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23749, PETRI_PLACES=586, PETRI_TRANSITIONS=986} [2024-06-27 22:22:20,332 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 546 predicate places. [2024-06-27 22:22:20,333 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 986 transitions, 23749 flow [2024-06-27 22:22:20,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:20,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:20,333 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 22:22:20,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 22:22:20,333 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:20,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:20,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1658777205, now seen corresponding path program 13 times [2024-06-27 22:22:20,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:20,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026187834] [2024-06-27 22:22:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:20,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:21,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:21,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026187834] [2024-06-27 22:22:21,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026187834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:21,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:21,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:21,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733699785] [2024-06-27 22:22:21,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:21,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:21,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:21,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:21,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:21,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:22:21,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 986 transitions, 23749 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:21,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:21,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:22:21,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:24,663 INFO L124 PetriNetUnfolderBase]: 3706/6441 cut-off events. [2024-06-27 22:22:24,663 INFO L125 PetriNetUnfolderBase]: For 991056/991056 co-relation queries the response was YES. [2024-06-27 22:22:24,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85659 conditions, 6441 events. 3706/6441 cut-off events. For 991056/991056 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 46578 event pairs, 891 based on Foata normal form. 2/6352 useless extension candidates. Maximal degree in co-relation 85385. Up to 5781 conditions per place. [2024-06-27 22:22:24,810 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 840 selfloop transitions, 160 changer transitions 0/1014 dead transitions. [2024-06-27 22:22:24,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 1014 transitions, 26594 flow [2024-06-27 22:22:24,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:24,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:24,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 22:22:24,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-27 22:22:24,812 INFO L175 Difference]: Start difference. First operand has 586 places, 986 transitions, 23749 flow. Second operand 9 states and 160 transitions. [2024-06-27 22:22:24,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 1014 transitions, 26594 flow [2024-06-27 22:22:30,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 1014 transitions, 26359 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 22:22:30,299 INFO L231 Difference]: Finished difference. Result has 588 places, 991 transitions, 24347 flow [2024-06-27 22:22:30,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=23514, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=827, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24347, PETRI_PLACES=588, PETRI_TRANSITIONS=991} [2024-06-27 22:22:30,300 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 548 predicate places. [2024-06-27 22:22:30,300 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 991 transitions, 24347 flow [2024-06-27 22:22:30,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:30,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:30,301 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 22:22:30,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 22:22:30,301 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:30,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:30,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1523594867, now seen corresponding path program 14 times [2024-06-27 22:22:30,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:30,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117141007] [2024-06-27 22:22:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:30,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:31,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:31,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:31,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117141007] [2024-06-27 22:22:31,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117141007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:31,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:31,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:31,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766753827] [2024-06-27 22:22:31,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:31,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:31,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:31,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:31,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:31,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:22:31,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 991 transitions, 24347 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:31,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:31,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:22:31,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:34,504 INFO L124 PetriNetUnfolderBase]: 3736/6491 cut-off events. [2024-06-27 22:22:34,505 INFO L125 PetriNetUnfolderBase]: For 1047481/1047481 co-relation queries the response was YES. [2024-06-27 22:22:34,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87546 conditions, 6491 events. 3736/6491 cut-off events. For 1047481/1047481 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 46999 event pairs, 906 based on Foata normal form. 2/6402 useless extension candidates. Maximal degree in co-relation 87270. Up to 5776 conditions per place. [2024-06-27 22:22:34,906 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 835 selfloop transitions, 172 changer transitions 0/1021 dead transitions. [2024-06-27 22:22:34,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 1021 transitions, 27615 flow [2024-06-27 22:22:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:34,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 22:22:34,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 22:22:34,907 INFO L175 Difference]: Start difference. First operand has 588 places, 991 transitions, 24347 flow. Second operand 9 states and 165 transitions. [2024-06-27 22:22:34,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 1021 transitions, 27615 flow [2024-06-27 22:22:39,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 1021 transitions, 27051 flow, removed 190 selfloop flow, removed 4 redundant places. [2024-06-27 22:22:39,786 INFO L231 Difference]: Finished difference. Result has 594 places, 996 transitions, 24632 flow [2024-06-27 22:22:39,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=23783, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=821, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24632, PETRI_PLACES=594, PETRI_TRANSITIONS=996} [2024-06-27 22:22:39,786 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 554 predicate places. [2024-06-27 22:22:39,787 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 996 transitions, 24632 flow [2024-06-27 22:22:39,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:39,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:39,787 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 22:22:39,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 22:22:39,787 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:39,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:39,788 INFO L85 PathProgramCache]: Analyzing trace with hash 366918391, now seen corresponding path program 15 times [2024-06-27 22:22:39,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:39,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641865444] [2024-06-27 22:22:39,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:39,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:41,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:41,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641865444] [2024-06-27 22:22:41,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641865444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:41,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:41,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:22:41,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349720474] [2024-06-27 22:22:41,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:41,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:22:41,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:41,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:22:41,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:22:41,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:22:41,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 996 transitions, 24632 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:41,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:41,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:22:41,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:44,192 INFO L124 PetriNetUnfolderBase]: 3800/6635 cut-off events. [2024-06-27 22:22:44,192 INFO L125 PetriNetUnfolderBase]: For 1183392/1183392 co-relation queries the response was YES. [2024-06-27 22:22:44,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90156 conditions, 6635 events. 3800/6635 cut-off events. For 1183392/1183392 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 48458 event pairs, 1092 based on Foata normal form. 12/6544 useless extension candidates. Maximal degree in co-relation 89877. Up to 5549 conditions per place. [2024-06-27 22:22:44,357 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 794 selfloop transitions, 224 changer transitions 0/1032 dead transitions. [2024-06-27 22:22:44,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 1032 transitions, 28208 flow [2024-06-27 22:22:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:44,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-27 22:22:44,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-06-27 22:22:44,359 INFO L175 Difference]: Start difference. First operand has 594 places, 996 transitions, 24632 flow. Second operand 9 states and 177 transitions. [2024-06-27 22:22:44,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 1032 transitions, 28208 flow [2024-06-27 22:22:51,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 1032 transitions, 27775 flow, removed 116 selfloop flow, removed 5 redundant places. [2024-06-27 22:22:51,152 INFO L231 Difference]: Finished difference. Result has 598 places, 998 transitions, 24851 flow [2024-06-27 22:22:51,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=24199, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=996, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=772, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24851, PETRI_PLACES=598, PETRI_TRANSITIONS=998} [2024-06-27 22:22:51,153 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 558 predicate places. [2024-06-27 22:22:51,153 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 998 transitions, 24851 flow [2024-06-27 22:22:51,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:51,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:22:51,153 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 22:22:51,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 22:22:51,154 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:22:51,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:22:51,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1523589287, now seen corresponding path program 16 times [2024-06-27 22:22:51,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:22:51,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926026230] [2024-06-27 22:22:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:22:51,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:22:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:22:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:22:52,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:22:52,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926026230] [2024-06-27 22:22:52,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926026230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:22:52,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:22:52,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:22:52,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585581318] [2024-06-27 22:22:52,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:22:52,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:22:52,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:22:52,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:22:52,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:22:52,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:22:52,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 998 transitions, 24851 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:22:52,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:22:52,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:22:52,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:22:55,691 INFO L124 PetriNetUnfolderBase]: 3849/6684 cut-off events. [2024-06-27 22:22:55,692 INFO L125 PetriNetUnfolderBase]: For 1213387/1213387 co-relation queries the response was YES. [2024-06-27 22:22:55,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92089 conditions, 6684 events. 3849/6684 cut-off events. For 1213387/1213387 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 48746 event pairs, 948 based on Foata normal form. 12/6607 useless extension candidates. Maximal degree in co-relation 91808. Up to 5900 conditions per place. [2024-06-27 22:22:55,849 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 839 selfloop transitions, 174 changer transitions 0/1027 dead transitions. [2024-06-27 22:22:55,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 1027 transitions, 27676 flow [2024-06-27 22:22:55,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:22:55,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:22:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 22:22:55,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-27 22:22:55,850 INFO L175 Difference]: Start difference. First operand has 598 places, 998 transitions, 24851 flow. Second operand 9 states and 168 transitions. [2024-06-27 22:22:55,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 1027 transitions, 27676 flow [2024-06-27 22:23:02,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 1027 transitions, 26986 flow, removed 164 selfloop flow, removed 5 redundant places. [2024-06-27 22:23:02,264 INFO L231 Difference]: Finished difference. Result has 602 places, 1000 transitions, 24785 flow [2024-06-27 22:23:02,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=24235, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=824, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24785, PETRI_PLACES=602, PETRI_TRANSITIONS=1000} [2024-06-27 22:23:02,265 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 562 predicate places. [2024-06-27 22:23:02,265 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 1000 transitions, 24785 flow [2024-06-27 22:23:02,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:02,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:02,265 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 22:23:02,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 22:23:02,266 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:02,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:02,266 INFO L85 PathProgramCache]: Analyzing trace with hash 366926327, now seen corresponding path program 4 times [2024-06-27 22:23:02,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:02,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484233045] [2024-06-27 22:23:02,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:02,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:03,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:03,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:03,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484233045] [2024-06-27 22:23:03,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484233045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:03,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:03,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:03,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969275933] [2024-06-27 22:23:03,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:03,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:03,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:03,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:03,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:03,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:23:03,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 1000 transitions, 24785 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:03,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:03,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:23:03,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:07,418 INFO L124 PetriNetUnfolderBase]: 3905/6820 cut-off events. [2024-06-27 22:23:07,418 INFO L125 PetriNetUnfolderBase]: For 1208786/1208786 co-relation queries the response was YES. [2024-06-27 22:23:07,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93214 conditions, 6820 events. 3905/6820 cut-off events. For 1208786/1208786 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 50158 event pairs, 1111 based on Foata normal form. 10/6727 useless extension candidates. Maximal degree in co-relation 92931. Up to 5748 conditions per place. [2024-06-27 22:23:07,558 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 803 selfloop transitions, 226 changer transitions 0/1042 dead transitions. [2024-06-27 22:23:07,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 1042 transitions, 28561 flow [2024-06-27 22:23:07,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:07,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 22:23:07,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-27 22:23:07,560 INFO L175 Difference]: Start difference. First operand has 602 places, 1000 transitions, 24785 flow. Second operand 10 states and 184 transitions. [2024-06-27 22:23:07,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 1042 transitions, 28561 flow [2024-06-27 22:23:13,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 1042 transitions, 28130 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 22:23:13,356 INFO L231 Difference]: Finished difference. Result has 605 places, 1004 transitions, 25015 flow [2024-06-27 22:23:13,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=24354, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25015, PETRI_PLACES=605, PETRI_TRANSITIONS=1004} [2024-06-27 22:23:13,357 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 565 predicate places. [2024-06-27 22:23:13,357 INFO L495 AbstractCegarLoop]: Abstraction has has 605 places, 1004 transitions, 25015 flow [2024-06-27 22:23:13,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:13,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:13,357 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 22:23:13,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 22:23:13,358 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:13,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1324085687, now seen corresponding path program 17 times [2024-06-27 22:23:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:13,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394373890] [2024-06-27 22:23:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:13,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:14,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:14,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394373890] [2024-06-27 22:23:14,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394373890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:14,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:14,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:14,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431378526] [2024-06-27 22:23:14,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:14,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:14,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:14,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:15,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:23:15,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 1004 transitions, 25015 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:15,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:15,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:23:15,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:18,352 INFO L124 PetriNetUnfolderBase]: 3917/6822 cut-off events. [2024-06-27 22:23:18,353 INFO L125 PetriNetUnfolderBase]: For 1141811/1141811 co-relation queries the response was YES. [2024-06-27 22:23:18,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93525 conditions, 6822 events. 3917/6822 cut-off events. For 1141811/1141811 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 50080 event pairs, 1255 based on Foata normal form. 2/6726 useless extension candidates. Maximal degree in co-relation 93241. Up to 6335 conditions per place. [2024-06-27 22:23:18,524 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 920 selfloop transitions, 97 changer transitions 0/1030 dead transitions. [2024-06-27 22:23:18,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 1030 transitions, 27879 flow [2024-06-27 22:23:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:18,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:18,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 22:23:18,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-27 22:23:18,526 INFO L175 Difference]: Start difference. First operand has 605 places, 1004 transitions, 25015 flow. Second operand 10 states and 166 transitions. [2024-06-27 22:23:18,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 1030 transitions, 27879 flow [2024-06-27 22:23:24,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 1030 transitions, 27304 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-27 22:23:24,640 INFO L231 Difference]: Finished difference. Result has 607 places, 1006 transitions, 24844 flow [2024-06-27 22:23:24,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=24440, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=907, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24844, PETRI_PLACES=607, PETRI_TRANSITIONS=1006} [2024-06-27 22:23:24,641 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 567 predicate places. [2024-06-27 22:23:24,641 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 1006 transitions, 24844 flow [2024-06-27 22:23:24,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:24,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:24,641 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 22:23:24,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 22:23:24,641 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:24,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash -57752113, now seen corresponding path program 5 times [2024-06-27 22:23:24,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:24,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717976747] [2024-06-27 22:23:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:24,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:26,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:26,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717976747] [2024-06-27 22:23:26,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717976747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:26,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:26,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:26,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431204162] [2024-06-27 22:23:26,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:26,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:26,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:26,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:26,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:26,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:23:26,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 1006 transitions, 24844 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:26,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:26,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:23:26,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:29,706 INFO L124 PetriNetUnfolderBase]: 4022/7027 cut-off events. [2024-06-27 22:23:29,706 INFO L125 PetriNetUnfolderBase]: For 1349080/1349080 co-relation queries the response was YES. [2024-06-27 22:23:29,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98001 conditions, 7027 events. 4022/7027 cut-off events. For 1349080/1349080 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 52008 event pairs, 1141 based on Foata normal form. 8/6932 useless extension candidates. Maximal degree in co-relation 97716. Up to 5651 conditions per place. [2024-06-27 22:23:29,880 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 807 selfloop transitions, 234 changer transitions 0/1055 dead transitions. [2024-06-27 22:23:29,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 1055 transitions, 29232 flow [2024-06-27 22:23:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:23:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:23:29,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 22:23:29,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:23:29,882 INFO L175 Difference]: Start difference. First operand has 607 places, 1006 transitions, 24844 flow. Second operand 10 states and 195 transitions. [2024-06-27 22:23:29,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 1055 transitions, 29232 flow [2024-06-27 22:23:37,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 1055 transitions, 28920 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-27 22:23:37,215 INFO L231 Difference]: Finished difference. Result has 611 places, 1013 transitions, 25491 flow [2024-06-27 22:23:37,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=24532, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1006, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25491, PETRI_PLACES=611, PETRI_TRANSITIONS=1013} [2024-06-27 22:23:37,216 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 571 predicate places. [2024-06-27 22:23:37,216 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 1013 transitions, 25491 flow [2024-06-27 22:23:37,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:37,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:37,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:37,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 22:23:37,216 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:37,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:37,217 INFO L85 PathProgramCache]: Analyzing trace with hash -65380469, now seen corresponding path program 18 times [2024-06-27 22:23:37,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:37,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899171557] [2024-06-27 22:23:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:37,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:38,592 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 22:23:38,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899171557] [2024-06-27 22:23:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899171557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:38,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:38,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:23:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471735067] [2024-06-27 22:23:38,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:38,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:23:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:38,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:23:38,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:23:38,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:23:38,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 1013 transitions, 25491 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:38,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:38,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:23:38,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:41,987 INFO L124 PetriNetUnfolderBase]: 4034/7047 cut-off events. [2024-06-27 22:23:41,988 INFO L125 PetriNetUnfolderBase]: For 1312629/1312629 co-relation queries the response was YES. [2024-06-27 22:23:42,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98795 conditions, 7047 events. 4034/7047 cut-off events. For 1312629/1312629 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 52248 event pairs, 1176 based on Foata normal form. 2/6946 useless extension candidates. Maximal degree in co-relation 98509. Up to 6057 conditions per place. [2024-06-27 22:23:42,161 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 788 selfloop transitions, 243 changer transitions 0/1045 dead transitions. [2024-06-27 22:23:42,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 1045 transitions, 29019 flow [2024-06-27 22:23:42,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:23:42,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:23:42,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 22:23:42,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2024-06-27 22:23:42,163 INFO L175 Difference]: Start difference. First operand has 611 places, 1013 transitions, 25491 flow. Second operand 9 states and 172 transitions. [2024-06-27 22:23:42,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 1045 transitions, 29019 flow [2024-06-27 22:23:49,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 1045 transitions, 28723 flow, removed 67 selfloop flow, removed 3 redundant places. [2024-06-27 22:23:49,862 INFO L231 Difference]: Finished difference. Result has 617 places, 1015 transitions, 25897 flow [2024-06-27 22:23:49,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=25195, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1013, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=770, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=25897, PETRI_PLACES=617, PETRI_TRANSITIONS=1015} [2024-06-27 22:23:49,863 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 577 predicate places. [2024-06-27 22:23:49,863 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 1015 transitions, 25897 flow [2024-06-27 22:23:49,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:49,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:23:49,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:23:49,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 22:23:49,864 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:23:49,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:23:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash 615356475, now seen corresponding path program 6 times [2024-06-27 22:23:49,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:23:49,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206287484] [2024-06-27 22:23:49,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:23:49,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:23:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:23:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:23:52,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:23:52,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206287484] [2024-06-27 22:23:52,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206287484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:23:52,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:23:52,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:23:52,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798041507] [2024-06-27 22:23:52,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:23:52,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:23:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:23:52,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:23:52,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:23:52,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:23:52,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 1015 transitions, 25897 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:23:52,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:23:52,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:23:52,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:23:56,594 INFO L124 PetriNetUnfolderBase]: 4610/7949 cut-off events. [2024-06-27 22:23:56,594 INFO L125 PetriNetUnfolderBase]: For 1541005/1541005 co-relation queries the response was YES. [2024-06-27 22:23:56,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110803 conditions, 7949 events. 4610/7949 cut-off events. For 1541005/1541005 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 58070 event pairs, 1924 based on Foata normal form. 8/7884 useless extension candidates. Maximal degree in co-relation 110514. Up to 7258 conditions per place. [2024-06-27 22:23:56,769 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 1001 selfloop transitions, 65 changer transitions 0/1072 dead transitions. [2024-06-27 22:23:56,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 1072 transitions, 30052 flow [2024-06-27 22:23:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:23:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:23:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 22:23:56,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-27 22:23:56,770 INFO L175 Difference]: Start difference. First operand has 617 places, 1015 transitions, 25897 flow. Second operand 11 states and 185 transitions. [2024-06-27 22:23:56,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 1072 transitions, 30052 flow [2024-06-27 22:24:04,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 620 places, 1072 transitions, 29392 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-06-27 22:24:04,364 INFO L231 Difference]: Finished difference. Result has 621 places, 1025 transitions, 25873 flow [2024-06-27 22:24:04,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=25253, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1015, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=959, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=25873, PETRI_PLACES=621, PETRI_TRANSITIONS=1025} [2024-06-27 22:24:04,365 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 581 predicate places. [2024-06-27 22:24:04,365 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 1025 transitions, 25873 flow [2024-06-27 22:24:04,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:04,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:04,365 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 22:24:04,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 22:24:04,366 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:04,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:04,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1116697679, now seen corresponding path program 19 times [2024-06-27 22:24:04,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:04,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494280480] [2024-06-27 22:24:04,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:04,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:05,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:05,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494280480] [2024-06-27 22:24:05,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494280480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:05,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:05,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:05,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640303974] [2024-06-27 22:24:05,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:05,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:06,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:24:06,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 1025 transitions, 25873 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:06,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:06,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:24:06,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:10,185 INFO L124 PetriNetUnfolderBase]: 4319/7544 cut-off events. [2024-06-27 22:24:10,185 INFO L125 PetriNetUnfolderBase]: For 1816510/1816510 co-relation queries the response was YES. [2024-06-27 22:24:10,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112431 conditions, 7544 events. 4319/7544 cut-off events. For 1816510/1816510 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 56840 event pairs, 1250 based on Foata normal form. 2/7443 useless extension candidates. Maximal degree in co-relation 112141. Up to 6132 conditions per place. [2024-06-27 22:24:10,387 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 794 selfloop transitions, 258 changer transitions 0/1066 dead transitions. [2024-06-27 22:24:10,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 1066 transitions, 30287 flow [2024-06-27 22:24:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:24:10,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:24:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-27 22:24:10,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963 [2024-06-27 22:24:10,389 INFO L175 Difference]: Start difference. First operand has 621 places, 1025 transitions, 25873 flow. Second operand 9 states and 177 transitions. [2024-06-27 22:24:10,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 1066 transitions, 30287 flow [2024-06-27 22:24:18,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 1066 transitions, 30088 flow, removed 85 selfloop flow, removed 5 redundant places. [2024-06-27 22:24:18,839 INFO L231 Difference]: Finished difference. Result has 626 places, 1031 transitions, 26935 flow [2024-06-27 22:24:18,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=25704, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1025, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=769, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=26935, PETRI_PLACES=626, PETRI_TRANSITIONS=1031} [2024-06-27 22:24:18,840 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 586 predicate places. [2024-06-27 22:24:18,840 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 1031 transitions, 26935 flow [2024-06-27 22:24:18,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:18,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:18,840 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 22:24:18,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 22:24:18,841 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:18,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:18,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1324293077, now seen corresponding path program 20 times [2024-06-27 22:24:18,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:18,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227674456] [2024-06-27 22:24:18,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:18,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:20,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:20,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227674456] [2024-06-27 22:24:20,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227674456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:20,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:20,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:24:20,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818630144] [2024-06-27 22:24:20,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:20,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:24:20,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:20,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:24:20,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:24:20,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 22:24:20,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 1031 transitions, 26935 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:20,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:20,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 22:24:20,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:24,804 INFO L124 PetriNetUnfolderBase]: 4402/7671 cut-off events. [2024-06-27 22:24:24,805 INFO L125 PetriNetUnfolderBase]: For 1955758/1955758 co-relation queries the response was YES. [2024-06-27 22:24:24,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117515 conditions, 7671 events. 4402/7671 cut-off events. For 1955758/1955758 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 57868 event pairs, 1464 based on Foata normal form. 2/7575 useless extension candidates. Maximal degree in co-relation 117223. Up to 7008 conditions per place. [2024-06-27 22:24:24,977 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 953 selfloop transitions, 98 changer transitions 0/1065 dead transitions. [2024-06-27 22:24:24,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 1065 transitions, 30561 flow [2024-06-27 22:24:24,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:24:24,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:24:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 22:24:24,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246913580246914 [2024-06-27 22:24:24,979 INFO L175 Difference]: Start difference. First operand has 626 places, 1031 transitions, 26935 flow. Second operand 9 states and 170 transitions. [2024-06-27 22:24:24,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 1065 transitions, 30561 flow [2024-06-27 22:24:33,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 1065 transitions, 30022 flow, removed 127 selfloop flow, removed 5 redundant places. [2024-06-27 22:24:33,659 INFO L231 Difference]: Finished difference. Result has 631 places, 1036 transitions, 27168 flow [2024-06-27 22:24:33,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=26396, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1031, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=935, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=27168, PETRI_PLACES=631, PETRI_TRANSITIONS=1036} [2024-06-27 22:24:33,660 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 591 predicate places. [2024-06-27 22:24:33,660 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 1036 transitions, 27168 flow [2024-06-27 22:24:33,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:33,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:33,660 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 22:24:33,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 22:24:33,661 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:33,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:33,661 INFO L85 PathProgramCache]: Analyzing trace with hash 359776487, now seen corresponding path program 7 times [2024-06-27 22:24:33,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:33,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149461962] [2024-06-27 22:24:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:33,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:35,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:35,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149461962] [2024-06-27 22:24:35,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149461962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:35,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:35,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:35,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581460539] [2024-06-27 22:24:35,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:35,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:35,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:35,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:35,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:35,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 22:24:35,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 1036 transitions, 27168 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:35,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:35,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 22:24:35,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:39,916 INFO L124 PetriNetUnfolderBase]: 4389/7666 cut-off events. [2024-06-27 22:24:39,917 INFO L125 PetriNetUnfolderBase]: For 1940033/1940033 co-relation queries the response was YES. [2024-06-27 22:24:40,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115938 conditions, 7666 events. 4389/7666 cut-off events. For 1940033/1940033 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 57991 event pairs, 1279 based on Foata normal form. 10/7573 useless extension candidates. Maximal degree in co-relation 115642. Up to 6583 conditions per place. [2024-06-27 22:24:40,106 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 811 selfloop transitions, 250 changer transitions 0/1074 dead transitions. [2024-06-27 22:24:40,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 1074 transitions, 30846 flow [2024-06-27 22:24:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:24:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:24:40,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 22:24:40,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-27 22:24:40,108 INFO L175 Difference]: Start difference. First operand has 631 places, 1036 transitions, 27168 flow. Second operand 10 states and 183 transitions. [2024-06-27 22:24:40,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 640 places, 1074 transitions, 30846 flow [2024-06-27 22:24:49,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 1074 transitions, 30394 flow, removed 166 selfloop flow, removed 6 redundant places. [2024-06-27 22:24:49,497 INFO L231 Difference]: Finished difference. Result has 635 places, 1036 transitions, 27227 flow [2024-06-27 22:24:49,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=26720, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=786, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27227, PETRI_PLACES=635, PETRI_TRANSITIONS=1036} [2024-06-27 22:24:49,498 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 595 predicate places. [2024-06-27 22:24:49,498 INFO L495 AbstractCegarLoop]: Abstraction has has 635 places, 1036 transitions, 27227 flow [2024-06-27 22:24:49,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:49,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:49,498 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 22:24:49,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 22:24:49,498 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:24:49,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:49,499 INFO L85 PathProgramCache]: Analyzing trace with hash 615087705, now seen corresponding path program 8 times [2024-06-27 22:24:49,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:49,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743261380] [2024-06-27 22:24:49,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:49,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:51,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:51,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:51,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743261380] [2024-06-27 22:24:51,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743261380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:51,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:51,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:24:51,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219771839] [2024-06-27 22:24:51,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:51,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:24:51,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:51,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:24:51,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:24:51,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:24:51,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 1036 transitions, 27227 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:51,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:51,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:24:51,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:56,158 INFO L124 PetriNetUnfolderBase]: 4938/8525 cut-off events. [2024-06-27 22:24:56,158 INFO L125 PetriNetUnfolderBase]: For 1929749/1929749 co-relation queries the response was YES. [2024-06-27 22:24:56,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123815 conditions, 8525 events. 4938/8525 cut-off events. For 1929749/1929749 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 63377 event pairs, 2054 based on Foata normal form. 10/8462 useless extension candidates. Maximal degree in co-relation 123518. Up to 8002 conditions per place. [2024-06-27 22:24:56,376 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 1005 selfloop transitions, 64 changer transitions 0/1075 dead transitions. [2024-06-27 22:24:56,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 1075 transitions, 30533 flow [2024-06-27 22:24:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 22:24:56,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-27 22:24:56,378 INFO L175 Difference]: Start difference. First operand has 635 places, 1036 transitions, 27227 flow. Second operand 11 states and 181 transitions. [2024-06-27 22:24:56,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 1075 transitions, 30533 flow [2024-06-27 22:25:05,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 1075 transitions, 30058 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 22:25:05,531 INFO L231 Difference]: Finished difference. Result has 639 places, 1037 transitions, 27023 flow [2024-06-27 22:25:05,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=26752, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=972, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=27023, PETRI_PLACES=639, PETRI_TRANSITIONS=1037} [2024-06-27 22:25:05,532 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 599 predicate places. [2024-06-27 22:25:05,532 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 1037 transitions, 27023 flow [2024-06-27 22:25:05,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:05,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:05,532 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 22:25:05,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 22:25:05,532 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:05,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:05,533 INFO L85 PathProgramCache]: Analyzing trace with hash 929046405, now seen corresponding path program 9 times [2024-06-27 22:25:05,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:05,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082497549] [2024-06-27 22:25:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:05,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:07,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:07,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082497549] [2024-06-27 22:25:07,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082497549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:07,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:07,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:07,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038220145] [2024-06-27 22:25:07,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:07,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:07,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:07,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:07,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:07,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:25:07,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 1037 transitions, 27023 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:07,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:07,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:25:07,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:12,860 INFO L124 PetriNetUnfolderBase]: 4938/8525 cut-off events. [2024-06-27 22:25:12,860 INFO L125 PetriNetUnfolderBase]: For 1862467/1862467 co-relation queries the response was YES. [2024-06-27 22:25:13,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122680 conditions, 8525 events. 4938/8525 cut-off events. For 1862467/1862467 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 63339 event pairs, 2060 based on Foata normal form. 10/8462 useless extension candidates. Maximal degree in co-relation 122381. Up to 8049 conditions per place. [2024-06-27 22:25:13,075 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 1030 selfloop transitions, 59 changer transitions 0/1095 dead transitions. [2024-06-27 22:25:13,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 1095 transitions, 30308 flow [2024-06-27 22:25:13,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 22:25:13,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 22:25:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 221 transitions. [2024-06-27 22:25:13,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384920634920635 [2024-06-27 22:25:13,077 INFO L175 Difference]: Start difference. First operand has 639 places, 1037 transitions, 27023 flow. Second operand 14 states and 221 transitions. [2024-06-27 22:25:13,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 1095 transitions, 30308 flow [2024-06-27 22:25:21,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 1095 transitions, 30095 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 22:25:21,639 INFO L231 Difference]: Finished difference. Result has 645 places, 1043 transitions, 27241 flow [2024-06-27 22:25:21,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=26828, PETRI_DIFFERENCE_MINUEND_PLACES=630, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=978, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=27241, PETRI_PLACES=645, PETRI_TRANSITIONS=1043} [2024-06-27 22:25:21,640 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 605 predicate places. [2024-06-27 22:25:21,640 INFO L495 AbstractCegarLoop]: Abstraction has has 645 places, 1043 transitions, 27241 flow [2024-06-27 22:25:21,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:21,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:21,640 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 22:25:21,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 22:25:21,640 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 22:25:21,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:21,641 INFO L85 PathProgramCache]: Analyzing trace with hash 929055705, now seen corresponding path program 10 times [2024-06-27 22:25:21,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:21,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129910852] [2024-06-27 22:25:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:21,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:23,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:23,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129910852] [2024-06-27 22:25:23,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129910852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:23,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:23,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 22:25:23,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941223229] [2024-06-27 22:25:23,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:23,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 22:25:23,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:23,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 22:25:23,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 22:25:23,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 22:25:23,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 1043 transitions, 27241 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:23,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:23,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 22:25:23,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand