./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix042.opt.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/mix042.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix042.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix042.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:24:31,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:24:32,032 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:24:32,036 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:24:32,037 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:24:32,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:24:32,065 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:24:32,066 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:24:32,066 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:24:32,069 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:24:32,069 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:24:32,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:24:32,070 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:24:32,071 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:24:32,071 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:24:32,071 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:24:32,071 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:24:32,072 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:24:32,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:24:32,072 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:24:32,072 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:24:32,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:24:32,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:24:32,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:24:32,074 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:24:32,074 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:24:32,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:24:32,074 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:24:32,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:24:32,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:24:32,076 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:24:32,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:24:32,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:24:32,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:24:32,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:24:32,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:24:32,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:24:32,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:24:32,077 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:24:32,077 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:24:32,077 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:24:32,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:24:32,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:24:32,078 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:24:32,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:24:32,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:24:32,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:24:32,291 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:24:32,292 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:24:32,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix042.opt.yml/witness.yml [2024-06-27 22:24:32,398 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:24:32,399 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:24:32,399 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix042.opt.i [2024-06-27 22:24:33,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:24:33,501 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:24:33,501 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix042.opt.i [2024-06-27 22:24:33,524 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e24b736/6ed5d9ea5f7a46e18d773daa176b8ddc/FLAGd95cf9f12 [2024-06-27 22:24:33,536 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e24b736/6ed5d9ea5f7a46e18d773daa176b8ddc [2024-06-27 22:24:33,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:24:33,538 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:24:33,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:24:33,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:24:33,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:24:33,545 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:24:32" (1/2) ... [2024-06-27 22:24:33,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afc3da and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:24:33, skipping insertion in model container [2024-06-27 22:24:33,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:24:32" (1/2) ... [2024-06-27 22:24:33,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26a6335 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:24:33, skipping insertion in model container [2024-06-27 22:24:33,547 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:24:33" (2/2) ... [2024-06-27 22:24:33,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afc3da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:33, skipping insertion in model container [2024-06-27 22:24:33,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:24:33" (2/2) ... [2024-06-27 22:24:33,549 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:24:33,579 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:24:33,580 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )a >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:24:33,580 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )a >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:24:33,580 INFO L97 edCorrectnessWitness]: Location invariant before [L831-L831] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )a >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-27 22:24:33,581 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:24:33,581 INFO L106 edCorrectnessWitness]: ghost_update [L826-L826] multithreaded = 1; [2024-06-27 22:24:33,614 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:24:33,783 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/mix042.opt.i[944,957] [2024-06-27 22:24:33,935 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:24:33,945 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:24:33,974 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/mix042.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:24:34,092 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:24:34,118 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:24:34,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34 WrapperNode [2024-06-27 22:24:34,119 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:24:34,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:24:34,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:24:34,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:24:34,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (1/1) ... [2024-06-27 22:24:34,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (1/1) ... [2024-06-27 22:24:34,172 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 148 [2024-06-27 22:24:34,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:24:34,173 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:24:34,173 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:24:34,173 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:24:34,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (1/1) ... [2024-06-27 22:24:34,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (1/1) ... [2024-06-27 22:24:34,192 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (1/1) ... [2024-06-27 22:24:34,206 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 22:24:34,207 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (1/1) ... [2024-06-27 22:24:34,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (1/1) ... [2024-06-27 22:24:34,232 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (1/1) ... [2024-06-27 22:24:34,233 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (1/1) ... [2024-06-27 22:24:34,235 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (1/1) ... [2024-06-27 22:24:34,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (1/1) ... [2024-06-27 22:24:34,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:24:34,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:24:34,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:24:34,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:24:34,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (1/1) ... [2024-06-27 22:24:34,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:24:34,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:24:34,278 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 22:24:34,289 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 22:24:34,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:24:34,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:24:34,308 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:24:34,309 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:24:34,309 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:24:34,309 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:24:34,309 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:24:34,310 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:24:34,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:24:34,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:24:34,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:24:34,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:24:34,312 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 22:24:34,454 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:24:34,457 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:24:34,792 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:24:34,793 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:24:34,911 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:24:34,912 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:24:34,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:24:34 BoogieIcfgContainer [2024-06-27 22:24:34,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:24:34,915 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:24:34,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:24:34,918 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:24:34,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:24:32" (1/4) ... [2024-06-27 22:24:34,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158e5c8b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:24:34, skipping insertion in model container [2024-06-27 22:24:34,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:24:33" (2/4) ... [2024-06-27 22:24:34,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158e5c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:24:34, skipping insertion in model container [2024-06-27 22:24:34,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:24:34" (3/4) ... [2024-06-27 22:24:34,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158e5c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:24:34, skipping insertion in model container [2024-06-27 22:24:34,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:24:34" (4/4) ... [2024-06-27 22:24:34,922 INFO L112 eAbstractionObserver]: Analyzing ICFG mix042.opt.i [2024-06-27 22:24:34,934 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:24:34,934 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:24:34,934 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:24:34,970 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:24:34,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:24:35,026 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 22:24:35,027 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:24:35,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 22:24:35,031 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:24:35,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 22:24:35,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:24:35,054 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;@5c8c124e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:24:35,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:24:35,058 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:24:35,058 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 22:24:35,058 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:24:35,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:35,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:24:35,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:24:35,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:35,099 INFO L85 PathProgramCache]: Analyzing trace with hash 354130535, now seen corresponding path program 1 times [2024-06-27 22:24:35,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:35,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678388447] [2024-06-27 22:24:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:35,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:36,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:36,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678388447] [2024-06-27 22:24:36,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678388447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:36,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:36,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:24:36,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055992316] [2024-06-27 22:24:36,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:36,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:24:36,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:36,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:24:36,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:24:36,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:24:36,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:36,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:36,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:24:36,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:36,856 INFO L124 PetriNetUnfolderBase]: 3248/5317 cut-off events. [2024-06-27 22:24:36,856 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-27 22:24:36,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10074 conditions, 5317 events. 3248/5317 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 34007 event pairs, 2609 based on Foata normal form. 168/5056 useless extension candidates. Maximal degree in co-relation 10062. Up to 4681 conditions per place. [2024-06-27 22:24:36,885 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 42 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-06-27 22:24:36,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 225 flow [2024-06-27 22:24:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:24:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:24:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-27 22:24:36,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-06-27 22:24:36,896 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 100 transitions. [2024-06-27 22:24:36,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 225 flow [2024-06-27 22:24:36,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:24:36,903 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 126 flow [2024-06-27 22:24:36,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-27 22:24:36,907 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-27 22:24:36,908 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 126 flow [2024-06-27 22:24:36,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:36,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:36,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:36,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:24:36,909 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:24:36,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:36,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1017340530, now seen corresponding path program 1 times [2024-06-27 22:24:36,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:36,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258696511] [2024-06-27 22:24:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:36,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:37,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:37,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258696511] [2024-06-27 22:24:37,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258696511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:37,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:37,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:24:37,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181424577] [2024-06-27 22:24:37,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:37,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:24:37,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:24:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:24:37,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:24:37,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:37,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:37,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:24:37,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:38,263 INFO L124 PetriNetUnfolderBase]: 3691/5471 cut-off events. [2024-06-27 22:24:38,263 INFO L125 PetriNetUnfolderBase]: For 797/797 co-relation queries the response was YES. [2024-06-27 22:24:38,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12113 conditions, 5471 events. 3691/5471 cut-off events. For 797/797 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 31409 event pairs, 1746 based on Foata normal form. 3/5249 useless extension candidates. Maximal degree in co-relation 12101. Up to 5280 conditions per place. [2024-06-27 22:24:38,286 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 55 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-06-27 22:24:38,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 74 transitions, 316 flow [2024-06-27 22:24:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:24:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:24:38,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-06-27 22:24:38,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2024-06-27 22:24:38,291 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 126 flow. Second operand 4 states and 126 transitions. [2024-06-27 22:24:38,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 74 transitions, 316 flow [2024-06-27 22:24:38,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:24:38,294 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 164 flow [2024-06-27 22:24:38,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-27 22:24:38,294 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-27 22:24:38,295 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 164 flow [2024-06-27 22:24:38,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:38,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:38,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:38,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:24:38,298 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:24:38,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:38,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1991657401, now seen corresponding path program 1 times [2024-06-27 22:24:38,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:38,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448769376] [2024-06-27 22:24:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:38,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:39,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448769376] [2024-06-27 22:24:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448769376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:39,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:39,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:24:39,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062549244] [2024-06-27 22:24:39,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:39,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:24:39,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:39,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:24:39,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:24:39,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:24:39,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:39,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:39,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:24:39,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:40,042 INFO L124 PetriNetUnfolderBase]: 4655/7431 cut-off events. [2024-06-27 22:24:40,043 INFO L125 PetriNetUnfolderBase]: For 2712/2712 co-relation queries the response was YES. [2024-06-27 22:24:40,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16993 conditions, 7431 events. 4655/7431 cut-off events. For 2712/2712 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 46967 event pairs, 2460 based on Foata normal form. 6/6967 useless extension candidates. Maximal degree in co-relation 16979. Up to 6548 conditions per place. [2024-06-27 22:24:40,095 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 77 selfloop transitions, 12 changer transitions 0/100 dead transitions. [2024-06-27 22:24:40,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 470 flow [2024-06-27 22:24:40,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:24:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:24:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-27 22:24:40,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6145833333333334 [2024-06-27 22:24:40,099 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 164 flow. Second operand 6 states and 177 transitions. [2024-06-27 22:24:40,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 470 flow [2024-06-27 22:24:40,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 450 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 22:24:40,104 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 209 flow [2024-06-27 22:24:40,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-06-27 22:24:40,105 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-27 22:24:40,105 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 209 flow [2024-06-27 22:24:40,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:40,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:40,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:40,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:24:40,106 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:24:40,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:40,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1954755794, now seen corresponding path program 1 times [2024-06-27 22:24:40,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:40,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006826853] [2024-06-27 22:24:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:40,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:41,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:41,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:41,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006826853] [2024-06-27 22:24:41,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006826853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:41,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:41,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:24:41,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914198531] [2024-06-27 22:24:41,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:41,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:24:41,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:41,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:24:41,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:24:41,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:24:41,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:41,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:41,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:24:41,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:41,952 INFO L124 PetriNetUnfolderBase]: 4554/7303 cut-off events. [2024-06-27 22:24:41,952 INFO L125 PetriNetUnfolderBase]: For 5102/5102 co-relation queries the response was YES. [2024-06-27 22:24:41,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18112 conditions, 7303 events. 4554/7303 cut-off events. For 5102/5102 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 46675 event pairs, 2828 based on Foata normal form. 3/6873 useless extension candidates. Maximal degree in co-relation 18095. Up to 6472 conditions per place. [2024-06-27 22:24:41,985 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 68 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-06-27 22:24:41,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 91 transitions, 474 flow [2024-06-27 22:24:41,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:24:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:24:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-27 22:24:41,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-06-27 22:24:41,987 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 209 flow. Second operand 6 states and 154 transitions. [2024-06-27 22:24:41,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 91 transitions, 474 flow [2024-06-27 22:24:41,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 91 transitions, 445 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:24:41,990 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 274 flow [2024-06-27 22:24:41,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2024-06-27 22:24:41,991 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2024-06-27 22:24:41,991 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 274 flow [2024-06-27 22:24:41,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:41,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:41,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:41,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:24:41,992 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:24:41,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:41,992 INFO L85 PathProgramCache]: Analyzing trace with hash 467889352, now seen corresponding path program 1 times [2024-06-27 22:24:41,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:41,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300633120] [2024-06-27 22:24:41,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:41,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:42,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:42,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300633120] [2024-06-27 22:24:42,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300633120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:42,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:42,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:24:42,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185803303] [2024-06-27 22:24:42,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:42,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:24:42,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:42,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:24:42,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:24:43,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:24:43,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:43,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:43,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:24:43,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:44,076 INFO L124 PetriNetUnfolderBase]: 4538/7267 cut-off events. [2024-06-27 22:24:44,077 INFO L125 PetriNetUnfolderBase]: For 8359/8359 co-relation queries the response was YES. [2024-06-27 22:24:44,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19490 conditions, 7267 events. 4538/7267 cut-off events. For 8359/8359 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 46611 event pairs, 2799 based on Foata normal form. 6/6806 useless extension candidates. Maximal degree in co-relation 19468. Up to 6407 conditions per place. [2024-06-27 22:24:44,114 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 78 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2024-06-27 22:24:44,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 653 flow [2024-06-27 22:24:44,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:24:44,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:24:44,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 22:24:44,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 22:24:44,116 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 274 flow. Second operand 7 states and 176 transitions. [2024-06-27 22:24:44,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 653 flow [2024-06-27 22:24:44,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 110 transitions, 625 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-06-27 22:24:44,132 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 455 flow [2024-06-27 22:24:44,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-27 22:24:44,134 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-27 22:24:44,135 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 455 flow [2024-06-27 22:24:44,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:44,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:44,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:44,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:24:44,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:24:44,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:44,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1164545481, now seen corresponding path program 1 times [2024-06-27 22:24:44,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:44,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164606627] [2024-06-27 22:24:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:44,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:44,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:44,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164606627] [2024-06-27 22:24:44,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164606627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:44,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:44,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:24:44,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003810475] [2024-06-27 22:24:44,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:44,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:24:44,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:44,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:24:44,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:24:45,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:24:45,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 455 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:45,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:45,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:24:45,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:46,158 INFO L124 PetriNetUnfolderBase]: 5339/8500 cut-off events. [2024-06-27 22:24:46,158 INFO L125 PetriNetUnfolderBase]: For 14708/14718 co-relation queries the response was YES. [2024-06-27 22:24:46,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24775 conditions, 8500 events. 5339/8500 cut-off events. For 14708/14718 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54431 event pairs, 3104 based on Foata normal form. 13/8042 useless extension candidates. Maximal degree in co-relation 24746. Up to 7452 conditions per place. [2024-06-27 22:24:46,196 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 106 selfloop transitions, 37 changer transitions 0/152 dead transitions. [2024-06-27 22:24:46,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 152 transitions, 1032 flow [2024-06-27 22:24:46,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:24:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:24:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-06-27 22:24:46,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494791666666666 [2024-06-27 22:24:46,198 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 455 flow. Second operand 8 states and 211 transitions. [2024-06-27 22:24:46,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 152 transitions, 1032 flow [2024-06-27 22:24:46,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 152 transitions, 1013 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 22:24:46,216 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 692 flow [2024-06-27 22:24:46,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=692, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2024-06-27 22:24:46,218 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-27 22:24:46,219 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 692 flow [2024-06-27 22:24:46,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:46,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:46,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:46,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:24:46,219 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:24:46,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1613948081, now seen corresponding path program 2 times [2024-06-27 22:24:46,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:46,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62906081] [2024-06-27 22:24:46,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:46,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:47,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:47,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62906081] [2024-06-27 22:24:47,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62906081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:47,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:47,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:24:47,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687935581] [2024-06-27 22:24:47,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:47,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:24:47,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:47,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:24:47,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:24:47,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:24:47,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 692 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:47,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:47,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:24:47,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:48,370 INFO L124 PetriNetUnfolderBase]: 5466/8574 cut-off events. [2024-06-27 22:24:48,371 INFO L125 PetriNetUnfolderBase]: For 22704/22714 co-relation queries the response was YES. [2024-06-27 22:24:48,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27937 conditions, 8574 events. 5466/8574 cut-off events. For 22704/22714 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 53795 event pairs, 2907 based on Foata normal form. 14/8166 useless extension candidates. Maximal degree in co-relation 27902. Up to 7511 conditions per place. [2024-06-27 22:24:48,422 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 98 selfloop transitions, 54 changer transitions 0/161 dead transitions. [2024-06-27 22:24:48,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 161 transitions, 1330 flow [2024-06-27 22:24:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:24:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:24:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-27 22:24:48,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-27 22:24:48,424 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 692 flow. Second operand 7 states and 184 transitions. [2024-06-27 22:24:48,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 161 transitions, 1330 flow [2024-06-27 22:24:48,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 161 transitions, 1262 flow, removed 33 selfloop flow, removed 1 redundant places. [2024-06-27 22:24:48,463 INFO L231 Difference]: Finished difference. Result has 93 places, 118 transitions, 970 flow [2024-06-27 22:24:48,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=970, PETRI_PLACES=93, PETRI_TRANSITIONS=118} [2024-06-27 22:24:48,463 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 39 predicate places. [2024-06-27 22:24:48,464 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 118 transitions, 970 flow [2024-06-27 22:24:48,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:48,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:48,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:48,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:24:48,464 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:24:48,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:48,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1572500497, now seen corresponding path program 3 times [2024-06-27 22:24:48,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:48,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317938807] [2024-06-27 22:24:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:48,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:49,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:49,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317938807] [2024-06-27 22:24:49,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317938807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:49,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:49,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:24:49,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470030218] [2024-06-27 22:24:49,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:49,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:24:49,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:49,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:24:49,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:24:49,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:24:49,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 118 transitions, 970 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:49,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:49,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:24:49,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:50,731 INFO L124 PetriNetUnfolderBase]: 5454/8552 cut-off events. [2024-06-27 22:24:50,731 INFO L125 PetriNetUnfolderBase]: For 28909/28909 co-relation queries the response was YES. [2024-06-27 22:24:50,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29041 conditions, 8552 events. 5454/8552 cut-off events. For 28909/28909 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 53524 event pairs, 2896 based on Foata normal form. 3/8150 useless extension candidates. Maximal degree in co-relation 29000. Up to 7499 conditions per place. [2024-06-27 22:24:50,792 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 97 selfloop transitions, 55 changer transitions 0/161 dead transitions. [2024-06-27 22:24:50,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 161 transitions, 1407 flow [2024-06-27 22:24:50,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:24:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:24:50,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 22:24:50,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-06-27 22:24:50,794 INFO L175 Difference]: Start difference. First operand has 93 places, 118 transitions, 970 flow. Second operand 7 states and 178 transitions. [2024-06-27 22:24:50,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 161 transitions, 1407 flow [2024-06-27 22:24:50,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 161 transitions, 1279 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-27 22:24:50,853 INFO L231 Difference]: Finished difference. Result has 97 places, 118 transitions, 968 flow [2024-06-27 22:24:50,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=968, PETRI_PLACES=97, PETRI_TRANSITIONS=118} [2024-06-27 22:24:50,854 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-27 22:24:50,854 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 118 transitions, 968 flow [2024-06-27 22:24:50,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:24:50,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:50,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:50,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:24:50,855 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:24:50,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:50,856 INFO L85 PathProgramCache]: Analyzing trace with hash 672548457, now seen corresponding path program 1 times [2024-06-27 22:24:50,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:50,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906332641] [2024-06-27 22:24:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:50,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:51,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:51,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:51,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906332641] [2024-06-27 22:24:51,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906332641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:51,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:51,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:24:51,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615282354] [2024-06-27 22:24:51,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:51,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:24:51,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:51,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:24:51,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:24:51,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:24:51,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 118 transitions, 968 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:24:51,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:51,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:24:51,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:53,074 INFO L124 PetriNetUnfolderBase]: 5617/8796 cut-off events. [2024-06-27 22:24:53,075 INFO L125 PetriNetUnfolderBase]: For 26054/26056 co-relation queries the response was YES. [2024-06-27 22:24:53,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29725 conditions, 8796 events. 5617/8796 cut-off events. For 26054/26056 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 54779 event pairs, 2749 based on Foata normal form. 5/8366 useless extension candidates. Maximal degree in co-relation 29682. Up to 7783 conditions per place. [2024-06-27 22:24:53,136 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 169 selfloop transitions, 44 changer transitions 0/222 dead transitions. [2024-06-27 22:24:53,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 222 transitions, 1846 flow [2024-06-27 22:24:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:24:53,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:24:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-06-27 22:24:53,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359848484848485 [2024-06-27 22:24:53,138 INFO L175 Difference]: Start difference. First operand has 97 places, 118 transitions, 968 flow. Second operand 11 states and 283 transitions. [2024-06-27 22:24:53,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 222 transitions, 1846 flow [2024-06-27 22:24:53,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 222 transitions, 1761 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 22:24:53,197 INFO L231 Difference]: Finished difference. Result has 107 places, 140 transitions, 1189 flow [2024-06-27 22:24:53,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1189, PETRI_PLACES=107, PETRI_TRANSITIONS=140} [2024-06-27 22:24:53,198 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-27 22:24:53,198 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 140 transitions, 1189 flow [2024-06-27 22:24:53,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:24:53,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:53,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:53,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:24:53,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:24:53,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:53,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1717037879, now seen corresponding path program 2 times [2024-06-27 22:24:53,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:53,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311219268] [2024-06-27 22:24:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:53,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:54,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:54,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311219268] [2024-06-27 22:24:54,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311219268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:54,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:54,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:24:54,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104919905] [2024-06-27 22:24:54,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:54,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:24:54,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:54,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:24:54,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:24:54,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:24:54,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 140 transitions, 1189 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:24:54,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:54,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:24:54,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:55,791 INFO L124 PetriNetUnfolderBase]: 5951/9425 cut-off events. [2024-06-27 22:24:55,791 INFO L125 PetriNetUnfolderBase]: For 39606/39608 co-relation queries the response was YES. [2024-06-27 22:24:55,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34131 conditions, 9425 events. 5951/9425 cut-off events. For 39606/39608 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 60101 event pairs, 2752 based on Foata normal form. 20/8974 useless extension candidates. Maximal degree in co-relation 34084. Up to 7979 conditions per place. [2024-06-27 22:24:55,839 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 174 selfloop transitions, 47 changer transitions 0/230 dead transitions. [2024-06-27 22:24:55,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 230 transitions, 2100 flow [2024-06-27 22:24:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:24:55,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:24:55,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 22:24:55,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:24:55,840 INFO L175 Difference]: Start difference. First operand has 107 places, 140 transitions, 1189 flow. Second operand 9 states and 234 transitions. [2024-06-27 22:24:55,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 230 transitions, 2100 flow [2024-06-27 22:24:55,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 230 transitions, 1929 flow, removed 66 selfloop flow, removed 4 redundant places. [2024-06-27 22:24:55,913 INFO L231 Difference]: Finished difference. Result has 114 places, 162 transitions, 1418 flow [2024-06-27 22:24:55,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1418, PETRI_PLACES=114, PETRI_TRANSITIONS=162} [2024-06-27 22:24:55,914 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-27 22:24:55,914 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 162 transitions, 1418 flow [2024-06-27 22:24:55,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:24:55,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:55,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:55,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:24:55,915 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:24:55,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:55,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1507349843, now seen corresponding path program 3 times [2024-06-27 22:24:55,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:55,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194736725] [2024-06-27 22:24:55,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:55,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:56,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:56,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194736725] [2024-06-27 22:24:56,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194736725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:56,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:56,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:24:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646466787] [2024-06-27 22:24:56,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:56,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:24:56,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:56,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:24:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:24:57,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:24:57,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 162 transitions, 1418 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:24:57,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:57,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:24:57,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:24:58,466 INFO L124 PetriNetUnfolderBase]: 6041/9593 cut-off events. [2024-06-27 22:24:58,466 INFO L125 PetriNetUnfolderBase]: For 45015/45025 co-relation queries the response was YES. [2024-06-27 22:24:58,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35423 conditions, 9593 events. 6041/9593 cut-off events. For 45015/45025 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 61494 event pairs, 2780 based on Foata normal form. 13/9114 useless extension candidates. Maximal degree in co-relation 35372. Up to 8033 conditions per place. [2024-06-27 22:24:58,538 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 129 selfloop transitions, 104 changer transitions 0/242 dead transitions. [2024-06-27 22:24:58,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 242 transitions, 2350 flow [2024-06-27 22:24:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:24:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:24:58,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-27 22:24:58,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578703703703703 [2024-06-27 22:24:58,540 INFO L175 Difference]: Start difference. First operand has 114 places, 162 transitions, 1418 flow. Second operand 9 states and 241 transitions. [2024-06-27 22:24:58,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 242 transitions, 2350 flow [2024-06-27 22:24:58,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 242 transitions, 2260 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-27 22:24:58,620 INFO L231 Difference]: Finished difference. Result has 122 places, 180 transitions, 1800 flow [2024-06-27 22:24:58,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1800, PETRI_PLACES=122, PETRI_TRANSITIONS=180} [2024-06-27 22:24:58,621 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-06-27 22:24:58,621 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 180 transitions, 1800 flow [2024-06-27 22:24:58,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:24:58,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:24:58,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:24:58,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:24:58,621 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:24:58,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:24:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1717158035, now seen corresponding path program 1 times [2024-06-27 22:24:58,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:24:58,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109001061] [2024-06-27 22:24:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:24:58,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:24:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:24:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:24:59,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:24:59,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109001061] [2024-06-27 22:24:59,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109001061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:24:59,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:24:59,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:24:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500324617] [2024-06-27 22:24:59,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:24:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:24:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:24:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:24:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:24:59,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:24:59,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 180 transitions, 1800 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:24:59,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:24:59,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:24:59,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:01,141 INFO L124 PetriNetUnfolderBase]: 6167/9673 cut-off events. [2024-06-27 22:25:01,141 INFO L125 PetriNetUnfolderBase]: For 63719/63731 co-relation queries the response was YES. [2024-06-27 22:25:01,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38800 conditions, 9673 events. 6167/9673 cut-off events. For 63719/63731 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 61823 event pairs, 2972 based on Foata normal form. 11/9171 useless extension candidates. Maximal degree in co-relation 38746. Up to 8431 conditions per place. [2024-06-27 22:25:01,198 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 206 selfloop transitions, 71 changer transitions 0/286 dead transitions. [2024-06-27 22:25:01,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 286 transitions, 3217 flow [2024-06-27 22:25:01,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:25:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:25:01,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-27 22:25:01,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-27 22:25:01,201 INFO L175 Difference]: Start difference. First operand has 122 places, 180 transitions, 1800 flow. Second operand 9 states and 234 transitions. [2024-06-27 22:25:01,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 286 transitions, 3217 flow [2024-06-27 22:25:01,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 286 transitions, 3049 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 22:25:01,304 INFO L231 Difference]: Finished difference. Result has 130 places, 230 transitions, 2458 flow [2024-06-27 22:25:01,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2458, PETRI_PLACES=130, PETRI_TRANSITIONS=230} [2024-06-27 22:25:01,305 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-27 22:25:01,306 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 230 transitions, 2458 flow [2024-06-27 22:25:01,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:01,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:01,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:01,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:25:01,306 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:01,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2022116873, now seen corresponding path program 4 times [2024-06-27 22:25:01,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:01,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943834916] [2024-06-27 22:25:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:01,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:02,484 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 22:25:02,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:02,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943834916] [2024-06-27 22:25:02,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943834916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:02,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:02,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:25:02,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420405663] [2024-06-27 22:25:02,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:02,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:25:02,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:02,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:25:02,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:25:02,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:02,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 230 transitions, 2458 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:02,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:02,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:02,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:04,349 INFO L124 PetriNetUnfolderBase]: 6683/10227 cut-off events. [2024-06-27 22:25:04,349 INFO L125 PetriNetUnfolderBase]: For 68502/68502 co-relation queries the response was YES. [2024-06-27 22:25:04,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42741 conditions, 10227 events. 6683/10227 cut-off events. For 68502/68502 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 63812 event pairs, 2155 based on Foata normal form. 18/9909 useless extension candidates. Maximal degree in co-relation 42683. Up to 8715 conditions per place. [2024-06-27 22:25:04,414 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 237 selfloop transitions, 72 changer transitions 0/318 dead transitions. [2024-06-27 22:25:04,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 318 transitions, 3587 flow [2024-06-27 22:25:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:25:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:25:04,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 22:25:04,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5115740740740741 [2024-06-27 22:25:04,416 INFO L175 Difference]: Start difference. First operand has 130 places, 230 transitions, 2458 flow. Second operand 9 states and 221 transitions. [2024-06-27 22:25:04,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 318 transitions, 3587 flow [2024-06-27 22:25:04,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 318 transitions, 3473 flow, removed 56 selfloop flow, removed 1 redundant places. [2024-06-27 22:25:04,583 INFO L231 Difference]: Finished difference. Result has 139 places, 256 transitions, 2798 flow [2024-06-27 22:25:04,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2798, PETRI_PLACES=139, PETRI_TRANSITIONS=256} [2024-06-27 22:25:04,583 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 85 predicate places. [2024-06-27 22:25:04,584 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 256 transitions, 2798 flow [2024-06-27 22:25:04,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:04,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:04,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:04,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:25:04,584 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:04,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1507215159, now seen corresponding path program 2 times [2024-06-27 22:25:04,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:04,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269414589] [2024-06-27 22:25:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:04,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:05,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:05,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269414589] [2024-06-27 22:25:05,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269414589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:05,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:05,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:25:05,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222276245] [2024-06-27 22:25:05,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:05,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:25:05,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:05,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:25:05,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:25:05,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:05,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 256 transitions, 2798 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:05,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:05,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:05,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:07,693 INFO L124 PetriNetUnfolderBase]: 6821/10819 cut-off events. [2024-06-27 22:25:07,693 INFO L125 PetriNetUnfolderBase]: For 81655/81667 co-relation queries the response was YES. [2024-06-27 22:25:07,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44976 conditions, 10819 events. 6821/10819 cut-off events. For 81655/81667 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 71501 event pairs, 3131 based on Foata normal form. 14/10301 useless extension candidates. Maximal degree in co-relation 44914. Up to 9248 conditions per place. [2024-06-27 22:25:07,775 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 229 selfloop transitions, 91 changer transitions 0/329 dead transitions. [2024-06-27 22:25:07,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 329 transitions, 3965 flow [2024-06-27 22:25:07,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:25:07,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:25:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 22:25:07,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-06-27 22:25:07,777 INFO L175 Difference]: Start difference. First operand has 139 places, 256 transitions, 2798 flow. Second operand 8 states and 207 transitions. [2024-06-27 22:25:07,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 329 transitions, 3965 flow [2024-06-27 22:25:07,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 329 transitions, 3874 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 22:25:07,915 INFO L231 Difference]: Finished difference. Result has 147 places, 282 transitions, 3219 flow [2024-06-27 22:25:07,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2711, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3219, PETRI_PLACES=147, PETRI_TRANSITIONS=282} [2024-06-27 22:25:07,916 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2024-06-27 22:25:07,916 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 282 transitions, 3219 flow [2024-06-27 22:25:07,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:07,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:07,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:07,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:25:07,917 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:07,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1507215345, now seen corresponding path program 5 times [2024-06-27 22:25:07,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:07,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108169372] [2024-06-27 22:25:07,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:07,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:09,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:09,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108169372] [2024-06-27 22:25:09,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108169372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:09,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:09,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:25:09,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875803275] [2024-06-27 22:25:09,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:09,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:25:09,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:25:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:25:09,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:09,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 282 transitions, 3219 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:09,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:09,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:09,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:10,888 INFO L124 PetriNetUnfolderBase]: 6923/10655 cut-off events. [2024-06-27 22:25:10,888 INFO L125 PetriNetUnfolderBase]: For 94709/94717 co-relation queries the response was YES. [2024-06-27 22:25:10,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47560 conditions, 10655 events. 6923/10655 cut-off events. For 94709/94717 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 67143 event pairs, 2245 based on Foata normal form. 12/10309 useless extension candidates. Maximal degree in co-relation 47493. Up to 9081 conditions per place. [2024-06-27 22:25:10,965 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 188 selfloop transitions, 159 changer transitions 0/356 dead transitions. [2024-06-27 22:25:10,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 356 transitions, 4438 flow [2024-06-27 22:25:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:25:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:25:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-27 22:25:10,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5598958333333334 [2024-06-27 22:25:10,973 INFO L175 Difference]: Start difference. First operand has 147 places, 282 transitions, 3219 flow. Second operand 8 states and 215 transitions. [2024-06-27 22:25:10,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 356 transitions, 4438 flow [2024-06-27 22:25:11,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 356 transitions, 4343 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-27 22:25:11,189 INFO L231 Difference]: Finished difference. Result has 154 places, 296 transitions, 3666 flow [2024-06-27 22:25:11,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3129, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3666, PETRI_PLACES=154, PETRI_TRANSITIONS=296} [2024-06-27 22:25:11,189 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-06-27 22:25:11,190 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 296 transitions, 3666 flow [2024-06-27 22:25:11,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:11,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:11,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:11,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:25:11,190 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:11,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash 14736955, now seen corresponding path program 1 times [2024-06-27 22:25:11,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:11,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937958142] [2024-06-27 22:25:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:11,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:11,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937958142] [2024-06-27 22:25:11,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937958142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:11,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:11,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:25:11,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254986154] [2024-06-27 22:25:11,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:11,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:25:11,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:11,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:25:11,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:25:11,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 48 [2024-06-27 22:25:11,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 296 transitions, 3666 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:11,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:11,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 48 [2024-06-27 22:25:11,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:11,834 INFO L124 PetriNetUnfolderBase]: 1965/4001 cut-off events. [2024-06-27 22:25:11,835 INFO L125 PetriNetUnfolderBase]: For 46071/46672 co-relation queries the response was YES. [2024-06-27 22:25:11,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15209 conditions, 4001 events. 1965/4001 cut-off events. For 46071/46672 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 30960 event pairs, 506 based on Foata normal form. 375/4032 useless extension candidates. Maximal degree in co-relation 15139. Up to 2065 conditions per place. [2024-06-27 22:25:11,870 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 52 selfloop transitions, 55 changer transitions 0/243 dead transitions. [2024-06-27 22:25:11,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 243 transitions, 2996 flow [2024-06-27 22:25:11,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:25:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:25:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-27 22:25:11,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-27 22:25:11,871 INFO L175 Difference]: Start difference. First operand has 154 places, 296 transitions, 3666 flow. Second operand 3 states and 108 transitions. [2024-06-27 22:25:11,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 243 transitions, 2996 flow [2024-06-27 22:25:11,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 243 transitions, 2843 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 22:25:11,924 INFO L231 Difference]: Finished difference. Result has 137 places, 234 transitions, 2715 flow [2024-06-27 22:25:11,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2605, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2715, PETRI_PLACES=137, PETRI_TRANSITIONS=234} [2024-06-27 22:25:11,925 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 83 predicate places. [2024-06-27 22:25:11,925 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 234 transitions, 2715 flow [2024-06-27 22:25:11,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:11,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:11,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:11,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:25:11,926 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:11,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash 273869485, now seen corresponding path program 6 times [2024-06-27 22:25:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:11,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920893091] [2024-06-27 22:25:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:11,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:13,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:13,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920893091] [2024-06-27 22:25:13,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920893091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:13,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:13,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:25:13,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825685470] [2024-06-27 22:25:13,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:13,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:25:13,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:13,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:25:13,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:25:13,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:13,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 234 transitions, 2715 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:13,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:13,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:13,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:14,588 INFO L124 PetriNetUnfolderBase]: 5569/8528 cut-off events. [2024-06-27 22:25:14,588 INFO L125 PetriNetUnfolderBase]: For 78630/78630 co-relation queries the response was YES. [2024-06-27 22:25:14,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37429 conditions, 8528 events. 5569/8528 cut-off events. For 78630/78630 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 50714 event pairs, 1756 based on Foata normal form. 3/8406 useless extension candidates. Maximal degree in co-relation 37363. Up to 7375 conditions per place. [2024-06-27 22:25:14,659 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 144 selfloop transitions, 123 changer transitions 5/281 dead transitions. [2024-06-27 22:25:14,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 281 transitions, 3503 flow [2024-06-27 22:25:14,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:25:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:25:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-27 22:25:14,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386904761904762 [2024-06-27 22:25:14,661 INFO L175 Difference]: Start difference. First operand has 137 places, 234 transitions, 2715 flow. Second operand 7 states and 181 transitions. [2024-06-27 22:25:14,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 281 transitions, 3503 flow [2024-06-27 22:25:14,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 281 transitions, 3349 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-27 22:25:14,785 INFO L231 Difference]: Finished difference. Result has 142 places, 233 transitions, 2821 flow [2024-06-27 22:25:14,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2561, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2821, PETRI_PLACES=142, PETRI_TRANSITIONS=233} [2024-06-27 22:25:14,785 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 88 predicate places. [2024-06-27 22:25:14,786 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 233 transitions, 2821 flow [2024-06-27 22:25:14,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:14,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:14,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:14,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:25:14,786 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:14,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:14,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1502573529, now seen corresponding path program 3 times [2024-06-27 22:25:14,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:14,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597763136] [2024-06-27 22:25:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:14,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:15,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:15,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597763136] [2024-06-27 22:25:15,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597763136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:15,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:15,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:25:15,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342346664] [2024-06-27 22:25:15,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:15,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:25:15,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:15,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:25:15,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:25:16,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:16,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 233 transitions, 2821 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:16,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:16,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:16,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:17,364 INFO L124 PetriNetUnfolderBase]: 5038/8002 cut-off events. [2024-06-27 22:25:17,364 INFO L125 PetriNetUnfolderBase]: For 80075/80083 co-relation queries the response was YES. [2024-06-27 22:25:17,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35518 conditions, 8002 events. 5038/8002 cut-off events. For 80075/80083 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 49515 event pairs, 2158 based on Foata normal form. 14/7791 useless extension candidates. Maximal degree in co-relation 35449. Up to 6795 conditions per place. [2024-06-27 22:25:17,424 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 198 selfloop transitions, 77 changer transitions 0/284 dead transitions. [2024-06-27 22:25:17,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 284 transitions, 3777 flow [2024-06-27 22:25:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:25:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:25:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 22:25:17,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 22:25:17,426 INFO L175 Difference]: Start difference. First operand has 142 places, 233 transitions, 2821 flow. Second operand 7 states and 176 transitions. [2024-06-27 22:25:17,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 284 transitions, 3777 flow [2024-06-27 22:25:17,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 284 transitions, 3580 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 22:25:17,533 INFO L231 Difference]: Finished difference. Result has 144 places, 245 transitions, 2946 flow [2024-06-27 22:25:17,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2946, PETRI_PLACES=144, PETRI_TRANSITIONS=245} [2024-06-27 22:25:17,533 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 90 predicate places. [2024-06-27 22:25:17,533 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 245 transitions, 2946 flow [2024-06-27 22:25:17,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:17,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:17,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:17,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:25:17,534 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:17,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:17,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1329846489, now seen corresponding path program 4 times [2024-06-27 22:25:17,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:17,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745173164] [2024-06-27 22:25:17,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:17,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:18,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:18,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745173164] [2024-06-27 22:25:18,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745173164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:18,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:18,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:25:18,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117914356] [2024-06-27 22:25:18,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:18,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:25:18,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:18,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:25:18,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:25:18,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:18,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 245 transitions, 2946 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:18,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:18,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:18,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:20,087 INFO L124 PetriNetUnfolderBase]: 5022/7981 cut-off events. [2024-06-27 22:25:20,087 INFO L125 PetriNetUnfolderBase]: For 82891/82899 co-relation queries the response was YES. [2024-06-27 22:25:20,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35477 conditions, 7981 events. 5022/7981 cut-off events. For 82891/82899 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 49283 event pairs, 2142 based on Foata normal form. 14/7768 useless extension candidates. Maximal degree in co-relation 35405. Up to 6782 conditions per place. [2024-06-27 22:25:20,156 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 188 selfloop transitions, 83 changer transitions 0/280 dead transitions. [2024-06-27 22:25:20,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 280 transitions, 3670 flow [2024-06-27 22:25:20,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:25:20,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:25:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 22:25:20,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-06-27 22:25:20,157 INFO L175 Difference]: Start difference. First operand has 144 places, 245 transitions, 2946 flow. Second operand 7 states and 172 transitions. [2024-06-27 22:25:20,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 280 transitions, 3670 flow [2024-06-27 22:25:20,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 280 transitions, 3534 flow, removed 32 selfloop flow, removed 2 redundant places. [2024-06-27 22:25:20,298 INFO L231 Difference]: Finished difference. Result has 149 places, 247 transitions, 3011 flow [2024-06-27 22:25:20,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2812, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3011, PETRI_PLACES=149, PETRI_TRANSITIONS=247} [2024-06-27 22:25:20,298 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 95 predicate places. [2024-06-27 22:25:20,298 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 247 transitions, 3011 flow [2024-06-27 22:25:20,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 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 22:25:20,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:20,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:20,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:25:20,299 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:20,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1329837561, now seen corresponding path program 1 times [2024-06-27 22:25:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:20,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021415352] [2024-06-27 22:25:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:20,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:21,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:21,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:21,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021415352] [2024-06-27 22:25:21,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021415352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:21,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:21,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:25:21,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403456341] [2024-06-27 22:25:21,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:21,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:25:21,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:21,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:25:21,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:25:21,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:21,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 247 transitions, 3011 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:21,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:21,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:21,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:23,345 INFO L124 PetriNetUnfolderBase]: 5014/8019 cut-off events. [2024-06-27 22:25:23,345 INFO L125 PetriNetUnfolderBase]: For 86794/86794 co-relation queries the response was YES. [2024-06-27 22:25:23,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35438 conditions, 8019 events. 5014/8019 cut-off events. For 86794/86794 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 49788 event pairs, 2340 based on Foata normal form. 4/7790 useless extension candidates. Maximal degree in co-relation 35363. Up to 7050 conditions per place. [2024-06-27 22:25:23,414 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 254 selfloop transitions, 19 changer transitions 0/282 dead transitions. [2024-06-27 22:25:23,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 282 transitions, 3745 flow [2024-06-27 22:25:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:25:23,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:25:23,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-27 22:25:23,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2024-06-27 22:25:23,415 INFO L175 Difference]: Start difference. First operand has 149 places, 247 transitions, 3011 flow. Second operand 8 states and 179 transitions. [2024-06-27 22:25:23,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 282 transitions, 3745 flow [2024-06-27 22:25:23,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 282 transitions, 3628 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 22:25:23,629 INFO L231 Difference]: Finished difference. Result has 154 places, 250 transitions, 2980 flow [2024-06-27 22:25:23,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2894, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2980, PETRI_PLACES=154, PETRI_TRANSITIONS=250} [2024-06-27 22:25:23,630 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-06-27 22:25:23,630 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 250 transitions, 2980 flow [2024-06-27 22:25:23,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:23,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:23,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:23,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:25:23,630 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:23,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:23,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1606718914, now seen corresponding path program 1 times [2024-06-27 22:25:23,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:23,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459216583] [2024-06-27 22:25:23,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:23,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:24,362 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 22:25:24,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:24,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459216583] [2024-06-27 22:25:24,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459216583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:24,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:24,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:25:24,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542960489] [2024-06-27 22:25:24,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:24,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:25:24,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:24,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:25:24,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:25:24,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:25:24,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 250 transitions, 2980 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:24,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:24,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:25:24,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:25,378 INFO L124 PetriNetUnfolderBase]: 4076/6850 cut-off events. [2024-06-27 22:25:25,378 INFO L125 PetriNetUnfolderBase]: For 78601/78638 co-relation queries the response was YES. [2024-06-27 22:25:25,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30084 conditions, 6850 events. 4076/6850 cut-off events. For 78601/78638 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 44719 event pairs, 2119 based on Foata normal form. 38/6650 useless extension candidates. Maximal degree in co-relation 30007. Up to 5768 conditions per place. [2024-06-27 22:25:25,436 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 219 selfloop transitions, 12 changer transitions 0/269 dead transitions. [2024-06-27 22:25:25,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 269 transitions, 3594 flow [2024-06-27 22:25:25,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:25:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:25:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 22:25:25,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 22:25:25,437 INFO L175 Difference]: Start difference. First operand has 154 places, 250 transitions, 2980 flow. Second operand 6 states and 136 transitions. [2024-06-27 22:25:25,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 269 transitions, 3594 flow [2024-06-27 22:25:25,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 269 transitions, 3524 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 22:25:25,547 INFO L231 Difference]: Finished difference. Result has 156 places, 258 transitions, 3056 flow [2024-06-27 22:25:25,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3056, PETRI_PLACES=156, PETRI_TRANSITIONS=258} [2024-06-27 22:25:25,548 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 102 predicate places. [2024-06-27 22:25:25,548 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 258 transitions, 3056 flow [2024-06-27 22:25:25,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:25,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:25,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:25,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:25:25,549 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:25,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1166313785, now seen corresponding path program 1 times [2024-06-27 22:25:25,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:25,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671798842] [2024-06-27 22:25:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:25,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:26,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:26,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671798842] [2024-06-27 22:25:26,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671798842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:26,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:26,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:25:26,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210714501] [2024-06-27 22:25:26,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:26,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:25:26,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:26,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:25:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:25:26,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:26,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 258 transitions, 3056 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:26,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:26,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:26,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:28,249 INFO L124 PetriNetUnfolderBase]: 5145/8197 cut-off events. [2024-06-27 22:25:28,249 INFO L125 PetriNetUnfolderBase]: For 100135/100139 co-relation queries the response was YES. [2024-06-27 22:25:28,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37998 conditions, 8197 events. 5145/8197 cut-off events. For 100135/100139 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 50619 event pairs, 2139 based on Foata normal form. 8/7996 useless extension candidates. Maximal degree in co-relation 37921. Up to 6978 conditions per place. [2024-06-27 22:25:28,305 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 284 selfloop transitions, 95 changer transitions 0/388 dead transitions. [2024-06-27 22:25:28,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 388 transitions, 4993 flow [2024-06-27 22:25:28,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:25:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:25:28,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 270 transitions. [2024-06-27 22:25:28,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-06-27 22:25:28,307 INFO L175 Difference]: Start difference. First operand has 156 places, 258 transitions, 3056 flow. Second operand 11 states and 270 transitions. [2024-06-27 22:25:28,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 388 transitions, 4993 flow [2024-06-27 22:25:28,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 388 transitions, 4974 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 22:25:28,448 INFO L231 Difference]: Finished difference. Result has 170 places, 320 transitions, 4144 flow [2024-06-27 22:25:28,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3037, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4144, PETRI_PLACES=170, PETRI_TRANSITIONS=320} [2024-06-27 22:25:28,449 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2024-06-27 22:25:28,449 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 320 transitions, 4144 flow [2024-06-27 22:25:28,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:28,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:28,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:28,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:25:28,450 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:28,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1688568579, now seen corresponding path program 2 times [2024-06-27 22:25:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:28,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860632366] [2024-06-27 22:25:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:28,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:29,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:29,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:29,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860632366] [2024-06-27 22:25:29,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860632366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:29,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:29,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:25:29,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900087743] [2024-06-27 22:25:29,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:29,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:25:29,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:29,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:25:29,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:25:29,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:29,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 320 transitions, 4144 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:29,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:29,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:29,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:31,289 INFO L124 PetriNetUnfolderBase]: 5255/8318 cut-off events. [2024-06-27 22:25:31,290 INFO L125 PetriNetUnfolderBase]: For 116661/116667 co-relation queries the response was YES. [2024-06-27 22:25:31,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41419 conditions, 8318 events. 5255/8318 cut-off events. For 116661/116667 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 50714 event pairs, 1989 based on Foata normal form. 12/8121 useless extension candidates. Maximal degree in co-relation 41335. Up to 7217 conditions per place. [2024-06-27 22:25:31,357 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 291 selfloop transitions, 86 changer transitions 0/386 dead transitions. [2024-06-27 22:25:31,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 386 transitions, 5411 flow [2024-06-27 22:25:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:25:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:25:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 22:25:31,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-27 22:25:31,359 INFO L175 Difference]: Start difference. First operand has 170 places, 320 transitions, 4144 flow. Second operand 9 states and 219 transitions. [2024-06-27 22:25:31,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 386 transitions, 5411 flow [2024-06-27 22:25:31,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 386 transitions, 5196 flow, removed 102 selfloop flow, removed 2 redundant places. [2024-06-27 22:25:31,556 INFO L231 Difference]: Finished difference. Result has 178 places, 341 transitions, 4475 flow [2024-06-27 22:25:31,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4035, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4475, PETRI_PLACES=178, PETRI_TRANSITIONS=341} [2024-06-27 22:25:31,556 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 124 predicate places. [2024-06-27 22:25:31,556 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 341 transitions, 4475 flow [2024-06-27 22:25:31,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:31,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:31,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:31,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:25:31,557 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:31,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:31,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1692287649, now seen corresponding path program 3 times [2024-06-27 22:25:31,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:31,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830231771] [2024-06-27 22:25:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:31,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:32,690 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 22:25:32,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:32,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830231771] [2024-06-27 22:25:32,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830231771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:32,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:32,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:25:32,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910323586] [2024-06-27 22:25:32,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:32,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:25:32,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:32,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:25:32,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:25:32,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:32,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 341 transitions, 4475 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:32,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:32,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:32,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:34,589 INFO L124 PetriNetUnfolderBase]: 5389/8542 cut-off events. [2024-06-27 22:25:34,589 INFO L125 PetriNetUnfolderBase]: For 126083/126087 co-relation queries the response was YES. [2024-06-27 22:25:34,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43101 conditions, 8542 events. 5389/8542 cut-off events. For 126083/126087 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 52484 event pairs, 1780 based on Foata normal form. 5/8336 useless extension candidates. Maximal degree in co-relation 43014. Up to 6608 conditions per place. [2024-06-27 22:25:34,675 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 244 selfloop transitions, 184 changer transitions 0/437 dead transitions. [2024-06-27 22:25:34,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 437 transitions, 6288 flow [2024-06-27 22:25:34,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:25:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:25:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-06-27 22:25:34,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5486111111111112 [2024-06-27 22:25:34,676 INFO L175 Difference]: Start difference. First operand has 178 places, 341 transitions, 4475 flow. Second operand 9 states and 237 transitions. [2024-06-27 22:25:34,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 437 transitions, 6288 flow [2024-06-27 22:25:34,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 437 transitions, 6217 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-27 22:25:34,886 INFO L231 Difference]: Finished difference. Result has 188 places, 375 transitions, 5361 flow [2024-06-27 22:25:34,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5361, PETRI_PLACES=188, PETRI_TRANSITIONS=375} [2024-06-27 22:25:34,887 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 134 predicate places. [2024-06-27 22:25:34,887 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 375 transitions, 5361 flow [2024-06-27 22:25:34,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:34,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:34,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:34,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:25:34,888 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:34,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:34,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1692293229, now seen corresponding path program 4 times [2024-06-27 22:25:34,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:34,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113243770] [2024-06-27 22:25:34,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:34,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:36,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:36,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113243770] [2024-06-27 22:25:36,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113243770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:36,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:36,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:25:36,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514859071] [2024-06-27 22:25:36,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:36,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:25:36,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:36,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:25:36,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:25:36,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:36,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 375 transitions, 5361 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:36,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:36,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:36,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:37,957 INFO L124 PetriNetUnfolderBase]: 5379/8528 cut-off events. [2024-06-27 22:25:37,958 INFO L125 PetriNetUnfolderBase]: For 140921/140925 co-relation queries the response was YES. [2024-06-27 22:25:38,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45871 conditions, 8528 events. 5379/8528 cut-off events. For 140921/140925 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 52424 event pairs, 1780 based on Foata normal form. 5/8322 useless extension candidates. Maximal degree in co-relation 45779. Up to 6600 conditions per place. [2024-06-27 22:25:38,035 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 233 selfloop transitions, 193 changer transitions 0/435 dead transitions. [2024-06-27 22:25:38,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 435 transitions, 6720 flow [2024-06-27 22:25:38,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:25:38,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:25:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-27 22:25:38,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-27 22:25:38,036 INFO L175 Difference]: Start difference. First operand has 188 places, 375 transitions, 5361 flow. Second operand 9 states and 233 transitions. [2024-06-27 22:25:38,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 435 transitions, 6720 flow [2024-06-27 22:25:38,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 435 transitions, 6532 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-27 22:25:38,322 INFO L231 Difference]: Finished difference. Result has 194 places, 376 transitions, 5584 flow [2024-06-27 22:25:38,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5183, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5584, PETRI_PLACES=194, PETRI_TRANSITIONS=376} [2024-06-27 22:25:38,322 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 140 predicate places. [2024-06-27 22:25:38,322 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 376 transitions, 5584 flow [2024-06-27 22:25:38,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:38,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:38,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:38,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:25:38,323 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:38,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:38,323 INFO L85 PathProgramCache]: Analyzing trace with hash 517247373, now seen corresponding path program 5 times [2024-06-27 22:25:38,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:38,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933950658] [2024-06-27 22:25:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:38,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:39,723 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 22:25:39,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:39,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933950658] [2024-06-27 22:25:39,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933950658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:39,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:39,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:25:39,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618927489] [2024-06-27 22:25:39,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:39,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:25:39,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:39,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:25:39,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:25:39,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:39,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 376 transitions, 5584 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:39,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:39,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:39,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:41,617 INFO L124 PetriNetUnfolderBase]: 5467/8678 cut-off events. [2024-06-27 22:25:41,617 INFO L125 PetriNetUnfolderBase]: For 141955/141955 co-relation queries the response was YES. [2024-06-27 22:25:41,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46415 conditions, 8678 events. 5467/8678 cut-off events. For 141955/141955 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 53685 event pairs, 1685 based on Foata normal form. 6/8472 useless extension candidates. Maximal degree in co-relation 46321. Up to 7475 conditions per place. [2024-06-27 22:25:41,708 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 333 selfloop transitions, 100 changer transitions 0/442 dead transitions. [2024-06-27 22:25:41,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 442 transitions, 6971 flow [2024-06-27 22:25:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:25:41,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:25:41,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-27 22:25:41,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 22:25:41,710 INFO L175 Difference]: Start difference. First operand has 194 places, 376 transitions, 5584 flow. Second operand 9 states and 208 transitions. [2024-06-27 22:25:41,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 442 transitions, 6971 flow [2024-06-27 22:25:41,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 442 transitions, 6538 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 22:25:41,990 INFO L231 Difference]: Finished difference. Result has 198 places, 403 transitions, 5762 flow [2024-06-27 22:25:41,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5205, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5762, PETRI_PLACES=198, PETRI_TRANSITIONS=403} [2024-06-27 22:25:41,991 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 144 predicate places. [2024-06-27 22:25:41,991 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 403 transitions, 5762 flow [2024-06-27 22:25:41,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:41,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:41,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:41,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:25:41,991 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:41,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:41,991 INFO L85 PathProgramCache]: Analyzing trace with hash 520972023, now seen corresponding path program 6 times [2024-06-27 22:25:41,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:41,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509494314] [2024-06-27 22:25:41,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:41,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509494314] [2024-06-27 22:25:43,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509494314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:43,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:43,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:25:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009406054] [2024-06-27 22:25:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:43,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:25:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:43,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:25:43,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:25:43,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:43,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 403 transitions, 5762 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:43,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:43,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:43,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:45,263 INFO L124 PetriNetUnfolderBase]: 5703/9045 cut-off events. [2024-06-27 22:25:45,263 INFO L125 PetriNetUnfolderBase]: For 153422/153426 co-relation queries the response was YES. [2024-06-27 22:25:45,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48418 conditions, 9045 events. 5703/9045 cut-off events. For 153422/153426 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 56153 event pairs, 1619 based on Foata normal form. 7/8835 useless extension candidates. Maximal degree in co-relation 48322. Up to 6886 conditions per place. [2024-06-27 22:25:45,355 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 252 selfloop transitions, 228 changer transitions 0/489 dead transitions. [2024-06-27 22:25:45,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 489 transitions, 7696 flow [2024-06-27 22:25:45,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:25:45,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:25:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 22:25:45,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-27 22:25:45,357 INFO L175 Difference]: Start difference. First operand has 198 places, 403 transitions, 5762 flow. Second operand 8 states and 209 transitions. [2024-06-27 22:25:45,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 489 transitions, 7696 flow [2024-06-27 22:25:45,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 489 transitions, 7599 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:25:45,652 INFO L231 Difference]: Finished difference. Result has 204 places, 432 transitions, 6548 flow [2024-06-27 22:25:45,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5665, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6548, PETRI_PLACES=204, PETRI_TRANSITIONS=432} [2024-06-27 22:25:45,653 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-27 22:25:45,653 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 432 transitions, 6548 flow [2024-06-27 22:25:45,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:45,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:45,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:45,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:25:45,654 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:45,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:45,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1517774477, now seen corresponding path program 7 times [2024-06-27 22:25:45,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:45,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408720116] [2024-06-27 22:25:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:45,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:46,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:46,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408720116] [2024-06-27 22:25:46,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408720116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:46,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:46,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:25:46,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622818950] [2024-06-27 22:25:46,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:46,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:25:46,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:46,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:25:46,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:25:47,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:47,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 432 transitions, 6548 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:47,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:47,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:47,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:48,873 INFO L124 PetriNetUnfolderBase]: 5687/9023 cut-off events. [2024-06-27 22:25:48,873 INFO L125 PetriNetUnfolderBase]: For 164210/164214 co-relation queries the response was YES. [2024-06-27 22:25:48,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49527 conditions, 9023 events. 5687/9023 cut-off events. For 164210/164214 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 56029 event pairs, 1616 based on Foata normal form. 7/8813 useless extension candidates. Maximal degree in co-relation 49428. Up to 6873 conditions per place. [2024-06-27 22:25:48,968 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 257 selfloop transitions, 222 changer transitions 0/488 dead transitions. [2024-06-27 22:25:48,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 488 transitions, 8027 flow [2024-06-27 22:25:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:25:48,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:25:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 22:25:48,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-27 22:25:48,970 INFO L175 Difference]: Start difference. First operand has 204 places, 432 transitions, 6548 flow. Second operand 8 states and 209 transitions. [2024-06-27 22:25:48,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 488 transitions, 8027 flow [2024-06-27 22:25:49,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 488 transitions, 7687 flow, removed 68 selfloop flow, removed 2 redundant places. [2024-06-27 22:25:49,335 INFO L231 Difference]: Finished difference. Result has 210 places, 432 transitions, 6673 flow [2024-06-27 22:25:49,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6208, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6673, PETRI_PLACES=210, PETRI_TRANSITIONS=432} [2024-06-27 22:25:49,335 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 156 predicate places. [2024-06-27 22:25:49,335 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 432 transitions, 6673 flow [2024-06-27 22:25:49,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:49,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:49,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:49,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:25:49,336 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:49,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash 655570613, now seen corresponding path program 8 times [2024-06-27 22:25:49,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:49,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89985028] [2024-06-27 22:25:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:49,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:50,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:50,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:50,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89985028] [2024-06-27 22:25:50,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89985028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:50,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:50,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:25:50,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001294302] [2024-06-27 22:25:50,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:50,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:25:50,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:50,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:25:50,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:25:50,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:50,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 432 transitions, 6673 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:50,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:50,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:50,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:52,604 INFO L124 PetriNetUnfolderBase]: 5855/9273 cut-off events. [2024-06-27 22:25:52,605 INFO L125 PetriNetUnfolderBase]: For 181033/181033 co-relation queries the response was YES. [2024-06-27 22:25:52,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51464 conditions, 9273 events. 5855/9273 cut-off events. For 181033/181033 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 57646 event pairs, 1516 based on Foata normal form. 6/9065 useless extension candidates. Maximal degree in co-relation 51362. Up to 7018 conditions per place. [2024-06-27 22:25:52,720 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 258 selfloop transitions, 239 changer transitions 0/506 dead transitions. [2024-06-27 22:25:52,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 506 transitions, 8644 flow [2024-06-27 22:25:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:25:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:25:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-27 22:25:52,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390625 [2024-06-27 22:25:52,721 INFO L175 Difference]: Start difference. First operand has 210 places, 432 transitions, 6673 flow. Second operand 8 states and 207 transitions. [2024-06-27 22:25:52,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 506 transitions, 8644 flow [2024-06-27 22:25:53,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 506 transitions, 8212 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 22:25:53,094 INFO L231 Difference]: Finished difference. Result has 215 places, 450 transitions, 7086 flow [2024-06-27 22:25:53,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6273, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7086, PETRI_PLACES=215, PETRI_TRANSITIONS=450} [2024-06-27 22:25:53,095 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 161 predicate places. [2024-06-27 22:25:53,095 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 450 transitions, 7086 flow [2024-06-27 22:25:53,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:53,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:53,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:53,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:25:53,096 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:53,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:53,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1717076267, now seen corresponding path program 9 times [2024-06-27 22:25:53,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:53,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051693933] [2024-06-27 22:25:53,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:53,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:54,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:54,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051693933] [2024-06-27 22:25:54,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051693933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:54,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:54,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:25:54,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710381357] [2024-06-27 22:25:54,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:54,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:25:54,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:25:54,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:25:54,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:54,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 450 transitions, 7086 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:54,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:54,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:54,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:25:56,377 INFO L124 PetriNetUnfolderBase]: 5839/9251 cut-off events. [2024-06-27 22:25:56,378 INFO L125 PetriNetUnfolderBase]: For 186543/186543 co-relation queries the response was YES. [2024-06-27 22:25:56,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51478 conditions, 9251 events. 5839/9251 cut-off events. For 186543/186543 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 57448 event pairs, 1513 based on Foata normal form. 6/9043 useless extension candidates. Maximal degree in co-relation 51372. Up to 7005 conditions per place. [2024-06-27 22:25:56,488 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 250 selfloop transitions, 241 changer transitions 0/500 dead transitions. [2024-06-27 22:25:56,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 500 transitions, 8550 flow [2024-06-27 22:25:56,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:25:56,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:25:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-27 22:25:56,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-27 22:25:56,489 INFO L175 Difference]: Start difference. First operand has 215 places, 450 transitions, 7086 flow. Second operand 8 states and 204 transitions. [2024-06-27 22:25:56,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 500 transitions, 8550 flow [2024-06-27 22:25:56,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 500 transitions, 8000 flow, removed 66 selfloop flow, removed 4 redundant places. [2024-06-27 22:25:56,888 INFO L231 Difference]: Finished difference. Result has 219 places, 450 transitions, 7034 flow [2024-06-27 22:25:56,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6536, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7034, PETRI_PLACES=219, PETRI_TRANSITIONS=450} [2024-06-27 22:25:56,888 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 165 predicate places. [2024-06-27 22:25:56,888 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 450 transitions, 7034 flow [2024-06-27 22:25:56,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:56,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:25:56,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:25:56,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:25:56,889 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:25:56,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:25:56,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1724433497, now seen corresponding path program 10 times [2024-06-27 22:25:56,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:25:56,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782697087] [2024-06-27 22:25:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:25:56,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:25:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:25:58,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:25:58,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:25:58,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782697087] [2024-06-27 22:25:58,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782697087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:25:58,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:25:58,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:25:58,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678651973] [2024-06-27 22:25:58,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:25:58,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:25:58,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:25:58,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:25:58,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:25:58,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:25:58,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 450 transitions, 7034 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:25:58,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:25:58,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:25:58,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:00,030 INFO L124 PetriNetUnfolderBase]: 5823/9220 cut-off events. [2024-06-27 22:26:00,030 INFO L125 PetriNetUnfolderBase]: For 188175/188175 co-relation queries the response was YES. [2024-06-27 22:26:00,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50930 conditions, 9220 events. 5823/9220 cut-off events. For 188175/188175 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 57167 event pairs, 1519 based on Foata normal form. 6/9012 useless extension candidates. Maximal degree in co-relation 50821. Up to 6992 conditions per place. [2024-06-27 22:26:00,139 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 226 selfloop transitions, 259 changer transitions 0/494 dead transitions. [2024-06-27 22:26:00,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 494 transitions, 8310 flow [2024-06-27 22:26:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:26:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:26:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 22:26:00,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:26:00,140 INFO L175 Difference]: Start difference. First operand has 219 places, 450 transitions, 7034 flow. Second operand 8 states and 200 transitions. [2024-06-27 22:26:00,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 494 transitions, 8310 flow [2024-06-27 22:26:00,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 494 transitions, 7648 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-27 22:26:00,541 INFO L231 Difference]: Finished difference. Result has 221 places, 452 transitions, 6938 flow [2024-06-27 22:26:00,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6388, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6938, PETRI_PLACES=221, PETRI_TRANSITIONS=452} [2024-06-27 22:26:00,541 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 167 predicate places. [2024-06-27 22:26:00,541 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 452 transitions, 6938 flow [2024-06-27 22:26:00,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:00,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:00,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:00,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:26:00,542 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:00,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1762600689, now seen corresponding path program 1 times [2024-06-27 22:26:00,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:00,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789194949] [2024-06-27 22:26:00,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:00,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:01,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:01,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789194949] [2024-06-27 22:26:01,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789194949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:01,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:01,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:26:01,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182728189] [2024-06-27 22:26:01,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:01,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:26:01,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:01,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:26:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:26:01,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:26:01,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 452 transitions, 6938 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:01,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:01,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:26:01,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:02,839 INFO L124 PetriNetUnfolderBase]: 5397/8712 cut-off events. [2024-06-27 22:26:02,839 INFO L125 PetriNetUnfolderBase]: For 189049/189158 co-relation queries the response was YES. [2024-06-27 22:26:02,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47843 conditions, 8712 events. 5397/8712 cut-off events. For 189049/189158 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 55621 event pairs, 2513 based on Foata normal form. 85/8529 useless extension candidates. Maximal degree in co-relation 47731. Up to 7567 conditions per place. [2024-06-27 22:26:02,944 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 417 selfloop transitions, 16 changer transitions 0/470 dead transitions. [2024-06-27 22:26:02,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 470 transitions, 7920 flow [2024-06-27 22:26:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:26:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:26:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-27 22:26:02,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-27 22:26:02,945 INFO L175 Difference]: Start difference. First operand has 221 places, 452 transitions, 6938 flow. Second operand 7 states and 151 transitions. [2024-06-27 22:26:02,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 470 transitions, 7920 flow [2024-06-27 22:26:03,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 470 transitions, 7614 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 22:26:03,285 INFO L231 Difference]: Finished difference. Result has 224 places, 456 transitions, 6707 flow [2024-06-27 22:26:03,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6632, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6707, PETRI_PLACES=224, PETRI_TRANSITIONS=456} [2024-06-27 22:26:03,286 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-06-27 22:26:03,286 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 456 transitions, 6707 flow [2024-06-27 22:26:03,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:03,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:03,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:03,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:26:03,287 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:03,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:03,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1884647054, now seen corresponding path program 1 times [2024-06-27 22:26:03,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:03,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107267322] [2024-06-27 22:26:03,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:03,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:04,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:04,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107267322] [2024-06-27 22:26:04,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107267322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:04,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:04,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:26:04,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137621362] [2024-06-27 22:26:04,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:04,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:26:04,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:04,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:26:04,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:26:04,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:04,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 456 transitions, 6707 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:04,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:04,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:04,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:06,376 INFO L124 PetriNetUnfolderBase]: 6218/9978 cut-off events. [2024-06-27 22:26:06,376 INFO L125 PetriNetUnfolderBase]: For 220495/220501 co-relation queries the response was YES. [2024-06-27 22:26:06,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54555 conditions, 9978 events. 6218/9978 cut-off events. For 220495/220501 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 63746 event pairs, 2228 based on Foata normal form. 10/9705 useless extension candidates. Maximal degree in co-relation 54442. Up to 8295 conditions per place. [2024-06-27 22:26:06,489 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 376 selfloop transitions, 149 changer transitions 0/535 dead transitions. [2024-06-27 22:26:06,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 535 transitions, 8347 flow [2024-06-27 22:26:06,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:06,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-06-27 22:26:06,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-06-27 22:26:06,491 INFO L175 Difference]: Start difference. First operand has 224 places, 456 transitions, 6707 flow. Second operand 11 states and 276 transitions. [2024-06-27 22:26:06,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 535 transitions, 8347 flow [2024-06-27 22:26:06,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 535 transitions, 8300 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 22:26:06,861 INFO L231 Difference]: Finished difference. Result has 231 places, 462 transitions, 7075 flow [2024-06-27 22:26:06,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6660, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7075, PETRI_PLACES=231, PETRI_TRANSITIONS=462} [2024-06-27 22:26:06,862 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 177 predicate places. [2024-06-27 22:26:06,862 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 462 transitions, 7075 flow [2024-06-27 22:26:06,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:06,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:06,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:06,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:26:06,863 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:06,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:06,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1820122724, now seen corresponding path program 2 times [2024-06-27 22:26:06,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:06,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691920541] [2024-06-27 22:26:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:06,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:07,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:07,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691920541] [2024-06-27 22:26:07,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691920541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:07,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:07,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:26:07,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846898716] [2024-06-27 22:26:07,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:07,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:26:07,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:26:07,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:26:07,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:07,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 462 transitions, 7075 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:07,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:07,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:07,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:09,923 INFO L124 PetriNetUnfolderBase]: 6244/10040 cut-off events. [2024-06-27 22:26:09,923 INFO L125 PetriNetUnfolderBase]: For 233910/233916 co-relation queries the response was YES. [2024-06-27 22:26:09,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56175 conditions, 10040 events. 6244/10040 cut-off events. For 233910/233916 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 64486 event pairs, 2296 based on Foata normal form. 10/9771 useless extension candidates. Maximal degree in co-relation 56060. Up to 8469 conditions per place. [2024-06-27 22:26:10,042 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 375 selfloop transitions, 145 changer transitions 0/530 dead transitions. [2024-06-27 22:26:10,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 530 transitions, 8503 flow [2024-06-27 22:26:10,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:26:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:26:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 270 transitions. [2024-06-27 22:26:10,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2024-06-27 22:26:10,043 INFO L175 Difference]: Start difference. First operand has 231 places, 462 transitions, 7075 flow. Second operand 11 states and 270 transitions. [2024-06-27 22:26:10,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 530 transitions, 8503 flow [2024-06-27 22:26:10,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 530 transitions, 8309 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 22:26:10,522 INFO L231 Difference]: Finished difference. Result has 236 places, 464 transitions, 7229 flow [2024-06-27 22:26:10,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6891, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7229, PETRI_PLACES=236, PETRI_TRANSITIONS=464} [2024-06-27 22:26:10,522 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 182 predicate places. [2024-06-27 22:26:10,522 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 464 transitions, 7229 flow [2024-06-27 22:26:10,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:10,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:10,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:10,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:26:10,523 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:10,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1743295764, now seen corresponding path program 3 times [2024-06-27 22:26:10,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:10,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796483018] [2024-06-27 22:26:10,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:10,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:11,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:11,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796483018] [2024-06-27 22:26:11,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796483018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:11,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:11,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:26:11,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235775440] [2024-06-27 22:26:11,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:11,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:26:11,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:11,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:26:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:26:11,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:26:11,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 464 transitions, 7229 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:11,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:11,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:26:11,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:13,080 INFO L124 PetriNetUnfolderBase]: 5171/8837 cut-off events. [2024-06-27 22:26:13,080 INFO L125 PetriNetUnfolderBase]: For 220515/220721 co-relation queries the response was YES. [2024-06-27 22:26:13,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49715 conditions, 8837 events. 5171/8837 cut-off events. For 220515/220721 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 61090 event pairs, 1541 based on Foata normal form. 83/8609 useless extension candidates. Maximal degree in co-relation 49598. Up to 6376 conditions per place. [2024-06-27 22:26:13,186 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 295 selfloop transitions, 131 changer transitions 0/543 dead transitions. [2024-06-27 22:26:13,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 543 transitions, 8831 flow [2024-06-27 22:26:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:13,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 273 transitions. [2024-06-27 22:26:13,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-06-27 22:26:13,187 INFO L175 Difference]: Start difference. First operand has 236 places, 464 transitions, 7229 flow. Second operand 10 states and 273 transitions. [2024-06-27 22:26:13,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 543 transitions, 8831 flow [2024-06-27 22:26:13,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 543 transitions, 8537 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 22:26:13,607 INFO L231 Difference]: Finished difference. Result has 239 places, 476 transitions, 7491 flow [2024-06-27 22:26:13,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6935, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7491, PETRI_PLACES=239, PETRI_TRANSITIONS=476} [2024-06-27 22:26:13,608 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 185 predicate places. [2024-06-27 22:26:13,608 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 476 transitions, 7491 flow [2024-06-27 22:26:13,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:13,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:13,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:13,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:26:13,609 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:13,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:13,609 INFO L85 PathProgramCache]: Analyzing trace with hash 803158390, now seen corresponding path program 4 times [2024-06-27 22:26:13,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:13,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702739179] [2024-06-27 22:26:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:13,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:14,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:14,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702739179] [2024-06-27 22:26:14,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702739179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:14,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:14,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:26:14,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178053185] [2024-06-27 22:26:14,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:14,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:26:14,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:14,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:26:14,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:26:14,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:14,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 476 transitions, 7491 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:14,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:14,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:14,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:17,163 INFO L124 PetriNetUnfolderBase]: 6866/11003 cut-off events. [2024-06-27 22:26:17,163 INFO L125 PetriNetUnfolderBase]: For 286238/286244 co-relation queries the response was YES. [2024-06-27 22:26:17,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64911 conditions, 11003 events. 6866/11003 cut-off events. For 286238/286244 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 71328 event pairs, 2196 based on Foata normal form. 12/10705 useless extension candidates. Maximal degree in co-relation 64791. Up to 9092 conditions per place. [2024-06-27 22:26:17,480 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 421 selfloop transitions, 135 changer transitions 0/566 dead transitions. [2024-06-27 22:26:17,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 566 transitions, 9549 flow [2024-06-27 22:26:17,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:17,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:17,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-27 22:26:17,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-27 22:26:17,482 INFO L175 Difference]: Start difference. First operand has 239 places, 476 transitions, 7491 flow. Second operand 10 states and 252 transitions. [2024-06-27 22:26:17,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 566 transitions, 9549 flow [2024-06-27 22:26:17,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 566 transitions, 9296 flow, removed 88 selfloop flow, removed 6 redundant places. [2024-06-27 22:26:17,907 INFO L231 Difference]: Finished difference. Result has 244 places, 498 transitions, 7999 flow [2024-06-27 22:26:17,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7337, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7999, PETRI_PLACES=244, PETRI_TRANSITIONS=498} [2024-06-27 22:26:17,908 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 190 predicate places. [2024-06-27 22:26:17,908 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 498 transitions, 7999 flow [2024-06-27 22:26:17,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:17,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:17,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:17,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:26:17,909 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:17,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:17,910 INFO L85 PathProgramCache]: Analyzing trace with hash 806015350, now seen corresponding path program 5 times [2024-06-27 22:26:17,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:17,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350558739] [2024-06-27 22:26:17,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:17,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:19,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350558739] [2024-06-27 22:26:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350558739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:19,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:26:19,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638927497] [2024-06-27 22:26:19,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:19,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:26:19,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:19,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:26:19,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:26:19,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:19,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 498 transitions, 7999 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:19,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:19,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:19,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:21,666 INFO L124 PetriNetUnfolderBase]: 6848/10995 cut-off events. [2024-06-27 22:26:21,666 INFO L125 PetriNetUnfolderBase]: For 271196/271202 co-relation queries the response was YES. [2024-06-27 22:26:21,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64270 conditions, 10995 events. 6848/10995 cut-off events. For 271196/271202 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 71538 event pairs, 2260 based on Foata normal form. 14/10693 useless extension candidates. Maximal degree in co-relation 64150. Up to 9331 conditions per place. [2024-06-27 22:26:21,794 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 419 selfloop transitions, 121 changer transitions 0/550 dead transitions. [2024-06-27 22:26:21,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 550 transitions, 9381 flow [2024-06-27 22:26:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:26:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:26:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 22:26:21,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-27 22:26:21,795 INFO L175 Difference]: Start difference. First operand has 244 places, 498 transitions, 7999 flow. Second operand 9 states and 224 transitions. [2024-06-27 22:26:21,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 550 transitions, 9381 flow [2024-06-27 22:26:22,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 550 transitions, 9163 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-27 22:26:22,334 INFO L231 Difference]: Finished difference. Result has 248 places, 498 transitions, 8061 flow [2024-06-27 22:26:22,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7795, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8061, PETRI_PLACES=248, PETRI_TRANSITIONS=498} [2024-06-27 22:26:22,335 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 194 predicate places. [2024-06-27 22:26:22,335 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 498 transitions, 8061 flow [2024-06-27 22:26:22,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:22,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:22,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:22,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:26:22,336 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:22,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:22,336 INFO L85 PathProgramCache]: Analyzing trace with hash 921306520, now seen corresponding path program 6 times [2024-06-27 22:26:22,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:22,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806153662] [2024-06-27 22:26:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:22,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:23,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:23,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806153662] [2024-06-27 22:26:23,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806153662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:23,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:23,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:26:23,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146321802] [2024-06-27 22:26:23,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:23,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:26:23,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:23,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:26:23,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:26:23,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:23,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 498 transitions, 8061 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:23,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:23,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:23,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:25,889 INFO L124 PetriNetUnfolderBase]: 6908/11077 cut-off events. [2024-06-27 22:26:25,889 INFO L125 PetriNetUnfolderBase]: For 273815/273819 co-relation queries the response was YES. [2024-06-27 22:26:25,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64725 conditions, 11077 events. 6908/11077 cut-off events. For 273815/273819 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 72084 event pairs, 2204 based on Foata normal form. 8/10754 useless extension candidates. Maximal degree in co-relation 64603. Up to 9237 conditions per place. [2024-06-27 22:26:26,042 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 339 selfloop transitions, 204 changer transitions 0/553 dead transitions. [2024-06-27 22:26:26,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 553 transitions, 9503 flow [2024-06-27 22:26:26,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:26:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:26:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 22:26:26,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254629629629629 [2024-06-27 22:26:26,043 INFO L175 Difference]: Start difference. First operand has 248 places, 498 transitions, 8061 flow. Second operand 9 states and 227 transitions. [2024-06-27 22:26:26,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 553 transitions, 9503 flow [2024-06-27 22:26:26,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 553 transitions, 9275 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 22:26:26,620 INFO L231 Difference]: Finished difference. Result has 250 places, 500 transitions, 8293 flow [2024-06-27 22:26:26,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7833, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8293, PETRI_PLACES=250, PETRI_TRANSITIONS=500} [2024-06-27 22:26:26,621 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 196 predicate places. [2024-06-27 22:26:26,621 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 500 transitions, 8293 flow [2024-06-27 22:26:26,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:26,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:26,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:26,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:26:26,622 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:26,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:26,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1777392518, now seen corresponding path program 1 times [2024-06-27 22:26:26,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:26,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628530334] [2024-06-27 22:26:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:26,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:28,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:28,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628530334] [2024-06-27 22:26:28,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628530334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:28,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:28,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:26:28,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558201208] [2024-06-27 22:26:28,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:28,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:26:28,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:28,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:26:28,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:26:28,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:28,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 500 transitions, 8293 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:28,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:28,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:28,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:30,406 INFO L124 PetriNetUnfolderBase]: 6940/11068 cut-off events. [2024-06-27 22:26:30,406 INFO L125 PetriNetUnfolderBase]: For 292529/292539 co-relation queries the response was YES. [2024-06-27 22:26:30,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65860 conditions, 11068 events. 6940/11068 cut-off events. For 292529/292539 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 71995 event pairs, 2374 based on Foata normal form. 11/10781 useless extension candidates. Maximal degree in co-relation 65737. Up to 9411 conditions per place. [2024-06-27 22:26:30,728 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 454 selfloop transitions, 89 changer transitions 0/553 dead transitions. [2024-06-27 22:26:30,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 553 transitions, 9729 flow [2024-06-27 22:26:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:26:30,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:26:30,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 22:26:30,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 22:26:30,730 INFO L175 Difference]: Start difference. First operand has 250 places, 500 transitions, 8293 flow. Second operand 9 states and 225 transitions. [2024-06-27 22:26:30,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 553 transitions, 9729 flow [2024-06-27 22:26:31,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 553 transitions, 9299 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 22:26:31,141 INFO L231 Difference]: Finished difference. Result has 252 places, 503 transitions, 8104 flow [2024-06-27 22:26:31,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7863, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8104, PETRI_PLACES=252, PETRI_TRANSITIONS=503} [2024-06-27 22:26:31,143 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-27 22:26:31,143 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 503 transitions, 8104 flow [2024-06-27 22:26:31,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:31,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:31,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:31,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:26:31,144 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:31,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:31,144 INFO L85 PathProgramCache]: Analyzing trace with hash -437928653, now seen corresponding path program 1 times [2024-06-27 22:26:31,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:31,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636150717] [2024-06-27 22:26:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:31,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:31,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:31,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636150717] [2024-06-27 22:26:31,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636150717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:31,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:31,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:26:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65757264] [2024-06-27 22:26:31,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:31,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:26:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:31,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:26:31,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:26:31,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:26:31,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 503 transitions, 8104 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:31,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:31,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:26:31,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:33,882 INFO L124 PetriNetUnfolderBase]: 6545/10550 cut-off events. [2024-06-27 22:26:33,882 INFO L125 PetriNetUnfolderBase]: For 294359/294455 co-relation queries the response was YES. [2024-06-27 22:26:33,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63229 conditions, 10550 events. 6545/10550 cut-off events. For 294359/294455 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 69320 event pairs, 2225 based on Foata normal form. 74/10282 useless extension candidates. Maximal degree in co-relation 63105. Up to 9058 conditions per place. [2024-06-27 22:26:33,998 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 474 selfloop transitions, 47 changer transitions 0/560 dead transitions. [2024-06-27 22:26:33,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 560 transitions, 10123 flow [2024-06-27 22:26:33,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:26:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:26:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 22:26:33,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-06-27 22:26:33,999 INFO L175 Difference]: Start difference. First operand has 252 places, 503 transitions, 8104 flow. Second operand 7 states and 167 transitions. [2024-06-27 22:26:33,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 560 transitions, 10123 flow [2024-06-27 22:26:34,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 560 transitions, 9898 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 22:26:34,495 INFO L231 Difference]: Finished difference. Result has 254 places, 536 transitions, 8930 flow [2024-06-27 22:26:34,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7889, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8930, PETRI_PLACES=254, PETRI_TRANSITIONS=536} [2024-06-27 22:26:34,496 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 200 predicate places. [2024-06-27 22:26:34,496 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 536 transitions, 8930 flow [2024-06-27 22:26:34,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:34,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:34,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:34,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:26:34,497 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:34,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:34,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1145203668, now seen corresponding path program 7 times [2024-06-27 22:26:34,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:34,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686237558] [2024-06-27 22:26:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:34,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:35,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:35,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686237558] [2024-06-27 22:26:35,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686237558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:35,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:35,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:26:35,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708496735] [2024-06-27 22:26:35,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:35,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:26:35,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:35,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:26:35,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:26:35,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:35,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 536 transitions, 8930 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:35,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:35,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:35,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:38,723 INFO L124 PetriNetUnfolderBase]: 7175/11514 cut-off events. [2024-06-27 22:26:38,723 INFO L125 PetriNetUnfolderBase]: For 315285/315285 co-relation queries the response was YES. [2024-06-27 22:26:38,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70024 conditions, 11514 events. 7175/11514 cut-off events. For 315285/315285 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 75479 event pairs, 2120 based on Foata normal form. 8/11196 useless extension candidates. Maximal degree in co-relation 69897. Up to 9734 conditions per place. [2024-06-27 22:26:38,865 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 434 selfloop transitions, 152 changer transitions 0/596 dead transitions. [2024-06-27 22:26:38,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 596 transitions, 10638 flow [2024-06-27 22:26:38,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:26:38,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:26:38,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 22:26:38,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-27 22:26:38,867 INFO L175 Difference]: Start difference. First operand has 254 places, 536 transitions, 8930 flow. Second operand 9 states and 212 transitions. [2024-06-27 22:26:38,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 596 transitions, 10638 flow [2024-06-27 22:26:39,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 596 transitions, 10574 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 22:26:39,573 INFO L231 Difference]: Finished difference. Result has 261 places, 550 transitions, 9482 flow [2024-06-27 22:26:39,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8878, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9482, PETRI_PLACES=261, PETRI_TRANSITIONS=550} [2024-06-27 22:26:39,574 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 207 predicate places. [2024-06-27 22:26:39,574 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 550 transitions, 9482 flow [2024-06-27 22:26:39,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:39,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:39,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:39,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:26:39,575 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:39,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:39,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1148060628, now seen corresponding path program 8 times [2024-06-27 22:26:39,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:39,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996240037] [2024-06-27 22:26:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:39,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:41,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:41,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996240037] [2024-06-27 22:26:41,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996240037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:41,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:41,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:26:41,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043580818] [2024-06-27 22:26:41,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:41,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:26:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:41,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:26:41,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:26:41,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:41,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 550 transitions, 9482 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:41,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:41,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:41,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:43,940 INFO L124 PetriNetUnfolderBase]: 7493/12012 cut-off events. [2024-06-27 22:26:43,941 INFO L125 PetriNetUnfolderBase]: For 327920/327920 co-relation queries the response was YES. [2024-06-27 22:26:44,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73633 conditions, 12012 events. 7493/12012 cut-off events. For 327920/327920 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 79246 event pairs, 2125 based on Foata normal form. 6/11682 useless extension candidates. Maximal degree in co-relation 73504. Up to 9794 conditions per place. [2024-06-27 22:26:44,107 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 442 selfloop transitions, 180 changer transitions 0/632 dead transitions. [2024-06-27 22:26:44,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 632 transitions, 11386 flow [2024-06-27 22:26:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:26:44,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:26:44,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-06-27 22:26:44,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-27 22:26:44,109 INFO L175 Difference]: Start difference. First operand has 261 places, 550 transitions, 9482 flow. Second operand 10 states and 238 transitions. [2024-06-27 22:26:44,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 632 transitions, 11386 flow [2024-06-27 22:26:44,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 632 transitions, 11032 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-27 22:26:44,942 INFO L231 Difference]: Finished difference. Result has 265 places, 572 transitions, 9880 flow [2024-06-27 22:26:44,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9128, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9880, PETRI_PLACES=265, PETRI_TRANSITIONS=572} [2024-06-27 22:26:44,943 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 211 predicate places. [2024-06-27 22:26:44,943 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 572 transitions, 9880 flow [2024-06-27 22:26:44,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:44,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:44,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:44,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:26:44,944 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:44,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:44,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1029912498, now seen corresponding path program 9 times [2024-06-27 22:26:44,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:44,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105035] [2024-06-27 22:26:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:44,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:46,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:46,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105035] [2024-06-27 22:26:46,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:46,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:46,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:26:46,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010065968] [2024-06-27 22:26:46,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:46,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:26:46,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:46,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:26:46,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:26:46,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:46,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 572 transitions, 9880 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:46,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:46,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:46,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:49,106 INFO L124 PetriNetUnfolderBase]: 7579/12187 cut-off events. [2024-06-27 22:26:49,106 INFO L125 PetriNetUnfolderBase]: For 341598/341602 co-relation queries the response was YES. [2024-06-27 22:26:49,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75453 conditions, 12187 events. 7579/12187 cut-off events. For 341598/341602 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 81309 event pairs, 2107 based on Foata normal form. 8/11832 useless extension candidates. Maximal degree in co-relation 75322. Up to 10170 conditions per place. [2024-06-27 22:26:49,282 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 398 selfloop transitions, 217 changer transitions 0/625 dead transitions. [2024-06-27 22:26:49,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 625 transitions, 11520 flow [2024-06-27 22:26:49,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:26:49,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:26:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-06-27 22:26:49,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-06-27 22:26:49,283 INFO L175 Difference]: Start difference. First operand has 265 places, 572 transitions, 9880 flow. Second operand 9 states and 215 transitions. [2024-06-27 22:26:49,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 625 transitions, 11520 flow [2024-06-27 22:26:50,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 625 transitions, 11234 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 22:26:50,209 INFO L231 Difference]: Finished difference. Result has 267 places, 576 transitions, 10108 flow [2024-06-27 22:26:50,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9594, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10108, PETRI_PLACES=267, PETRI_TRANSITIONS=576} [2024-06-27 22:26:50,210 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 213 predicate places. [2024-06-27 22:26:50,210 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 576 transitions, 10108 flow [2024-06-27 22:26:50,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:50,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:50,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:50,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:26:50,211 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:50,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:50,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2044628324, now seen corresponding path program 2 times [2024-06-27 22:26:50,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:50,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351062404] [2024-06-27 22:26:50,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:50,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:51,838 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 22:26:51,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:51,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351062404] [2024-06-27 22:26:51,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351062404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:51,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:51,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:26:51,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433024632] [2024-06-27 22:26:51,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:51,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:26:51,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:51,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:26:51,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:26:52,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:26:52,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 576 transitions, 10108 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:52,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:52,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:26:52,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:54,859 INFO L124 PetriNetUnfolderBase]: 7645/12295 cut-off events. [2024-06-27 22:26:54,859 INFO L125 PetriNetUnfolderBase]: For 349048/349058 co-relation queries the response was YES. [2024-06-27 22:26:54,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76268 conditions, 12295 events. 7645/12295 cut-off events. For 349048/349058 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 82325 event pairs, 2500 based on Foata normal form. 11/11956 useless extension candidates. Maximal degree in co-relation 76137. Up to 10396 conditions per place. [2024-06-27 22:26:55,005 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 526 selfloop transitions, 92 changer transitions 0/628 dead transitions. [2024-06-27 22:26:55,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 628 transitions, 11721 flow [2024-06-27 22:26:55,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:26:55,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:26:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 22:26:55,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-27 22:26:55,006 INFO L175 Difference]: Start difference. First operand has 267 places, 576 transitions, 10108 flow. Second operand 9 states and 211 transitions. [2024-06-27 22:26:55,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 628 transitions, 11721 flow [2024-06-27 22:26:55,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 628 transitions, 11108 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 22:26:55,695 INFO L231 Difference]: Finished difference. Result has 268 places, 582 transitions, 9772 flow [2024-06-27 22:26:55,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9495, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9772, PETRI_PLACES=268, PETRI_TRANSITIONS=582} [2024-06-27 22:26:55,695 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 214 predicate places. [2024-06-27 22:26:55,696 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 582 transitions, 9772 flow [2024-06-27 22:26:55,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:55,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:55,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:55,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:26:55,696 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:55,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:55,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1270877999, now seen corresponding path program 2 times [2024-06-27 22:26:55,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:55,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860351555] [2024-06-27 22:26:55,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:55,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:26:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:26:56,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:26:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860351555] [2024-06-27 22:26:56,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860351555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:26:56,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:26:56,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:26:56,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883298738] [2024-06-27 22:26:56,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:26:56,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:26:56,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:26:56,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:26:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:26:56,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:26:56,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 582 transitions, 9772 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:56,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:26:56,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:26:56,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:26:58,854 INFO L124 PetriNetUnfolderBase]: 7234/11701 cut-off events. [2024-06-27 22:26:58,854 INFO L125 PetriNetUnfolderBase]: For 347049/347137 co-relation queries the response was YES. [2024-06-27 22:26:58,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73206 conditions, 11701 events. 7234/11701 cut-off events. For 347049/347137 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 78890 event pairs, 2190 based on Foata normal form. 61/11376 useless extension candidates. Maximal degree in co-relation 73075. Up to 10041 conditions per place. [2024-06-27 22:26:59,004 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 520 selfloop transitions, 48 changer transitions 0/609 dead transitions. [2024-06-27 22:26:59,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 609 transitions, 11093 flow [2024-06-27 22:26:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:26:59,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:26:59,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-27 22:26:59,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-27 22:26:59,010 INFO L175 Difference]: Start difference. First operand has 268 places, 582 transitions, 9772 flow. Second operand 7 states and 157 transitions. [2024-06-27 22:26:59,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 609 transitions, 11093 flow [2024-06-27 22:26:59,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 609 transitions, 10774 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 22:26:59,764 INFO L231 Difference]: Finished difference. Result has 268 places, 591 transitions, 9646 flow [2024-06-27 22:26:59,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9453, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9646, PETRI_PLACES=268, PETRI_TRANSITIONS=591} [2024-06-27 22:26:59,765 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 214 predicate places. [2024-06-27 22:26:59,765 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 591 transitions, 9646 flow [2024-06-27 22:26:59,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:26:59,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:26:59,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:26:59,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:26:59,765 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:26:59,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:26:59,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1689753678, now seen corresponding path program 10 times [2024-06-27 22:26:59,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:26:59,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413195697] [2024-06-27 22:26:59,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:26:59,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:26:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:01,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:01,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:01,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413195697] [2024-06-27 22:27:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413195697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:01,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:01,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:27:01,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965842273] [2024-06-27 22:27:01,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:01,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:27:01,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:01,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:27:01,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:27:01,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:01,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 591 transitions, 9646 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:01,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:01,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:01,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:03,934 INFO L124 PetriNetUnfolderBase]: 7681/12327 cut-off events. [2024-06-27 22:27:03,934 INFO L125 PetriNetUnfolderBase]: For 359536/359536 co-relation queries the response was YES. [2024-06-27 22:27:04,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77737 conditions, 12327 events. 7681/12327 cut-off events. For 359536/359536 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 82072 event pairs, 2063 based on Foata normal form. 4/11968 useless extension candidates. Maximal degree in co-relation 77605. Up to 10342 conditions per place. [2024-06-27 22:27:04,090 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 403 selfloop transitions, 225 changer transitions 0/638 dead transitions. [2024-06-27 22:27:04,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 638 transitions, 11286 flow [2024-06-27 22:27:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:27:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:27:04,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 22:27:04,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-27 22:27:04,091 INFO L175 Difference]: Start difference. First operand has 268 places, 591 transitions, 9646 flow. Second operand 9 states and 212 transitions. [2024-06-27 22:27:04,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 638 transitions, 11286 flow [2024-06-27 22:27:04,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 638 transitions, 11218 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 22:27:04,905 INFO L231 Difference]: Finished difference. Result has 274 places, 593 transitions, 10092 flow [2024-06-27 22:27:04,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9578, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10092, PETRI_PLACES=274, PETRI_TRANSITIONS=593} [2024-06-27 22:27:04,906 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 220 predicate places. [2024-06-27 22:27:04,906 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 593 transitions, 10092 flow [2024-06-27 22:27:04,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:04,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:04,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:04,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:27:04,906 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:04,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash -422633156, now seen corresponding path program 3 times [2024-06-27 22:27:04,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:04,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378342764] [2024-06-27 22:27:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:04,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:06,549 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 22:27:06,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:06,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378342764] [2024-06-27 22:27:06,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378342764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:06,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:06,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:27:06,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147608216] [2024-06-27 22:27:06,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:06,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:27:06,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:06,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:27:06,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:27:06,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:06,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 593 transitions, 10092 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:06,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:06,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:06,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:09,524 INFO L124 PetriNetUnfolderBase]: 7719/12392 cut-off events. [2024-06-27 22:27:09,524 INFO L125 PetriNetUnfolderBase]: For 382479/382491 co-relation queries the response was YES. [2024-06-27 22:27:09,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79424 conditions, 12392 events. 7719/12392 cut-off events. For 382479/382491 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 82873 event pairs, 2476 based on Foata normal form. 16/12058 useless extension candidates. Maximal degree in co-relation 79291. Up to 10520 conditions per place. [2024-06-27 22:27:09,703 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 543 selfloop transitions, 90 changer transitions 0/643 dead transitions. [2024-06-27 22:27:09,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 643 transitions, 11772 flow [2024-06-27 22:27:09,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:27:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:27:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 22:27:09,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837962962962963 [2024-06-27 22:27:09,705 INFO L175 Difference]: Start difference. First operand has 274 places, 593 transitions, 10092 flow. Second operand 9 states and 209 transitions. [2024-06-27 22:27:09,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 643 transitions, 11772 flow [2024-06-27 22:27:10,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 643 transitions, 11083 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 22:27:10,590 INFO L231 Difference]: Finished difference. Result has 275 places, 596 transitions, 9662 flow [2024-06-27 22:27:10,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9403, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9662, PETRI_PLACES=275, PETRI_TRANSITIONS=596} [2024-06-27 22:27:10,591 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 221 predicate places. [2024-06-27 22:27:10,591 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 596 transitions, 9662 flow [2024-06-27 22:27:10,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:10,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:10,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:10,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:27:10,592 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:10,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:10,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2078213088, now seen corresponding path program 4 times [2024-06-27 22:27:10,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:10,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037697261] [2024-06-27 22:27:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:10,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:12,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:12,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037697261] [2024-06-27 22:27:12,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037697261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:12,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:12,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:27:12,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193613835] [2024-06-27 22:27:12,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:12,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:27:12,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:12,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:27:12,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:27:12,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:12,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 596 transitions, 9662 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:12,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:12,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:12,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:15,358 INFO L124 PetriNetUnfolderBase]: 7753/12440 cut-off events. [2024-06-27 22:27:15,358 INFO L125 PetriNetUnfolderBase]: For 393766/393778 co-relation queries the response was YES. [2024-06-27 22:27:15,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79888 conditions, 12440 events. 7753/12440 cut-off events. For 393766/393778 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 83227 event pairs, 2477 based on Foata normal form. 16/12106 useless extension candidates. Maximal degree in co-relation 79756. Up to 10570 conditions per place. [2024-06-27 22:27:15,521 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 538 selfloop transitions, 94 changer transitions 0/642 dead transitions. [2024-06-27 22:27:15,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 642 transitions, 11302 flow [2024-06-27 22:27:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:27:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:27:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-27 22:27:15,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 22:27:15,523 INFO L175 Difference]: Start difference. First operand has 275 places, 596 transitions, 9662 flow. Second operand 9 states and 207 transitions. [2024-06-27 22:27:15,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 642 transitions, 11302 flow [2024-06-27 22:27:16,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 642 transitions, 11026 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 22:27:16,500 INFO L231 Difference]: Finished difference. Result has 276 places, 599 transitions, 9659 flow [2024-06-27 22:27:16,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9386, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9659, PETRI_PLACES=276, PETRI_TRANSITIONS=599} [2024-06-27 22:27:16,501 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 222 predicate places. [2024-06-27 22:27:16,501 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 599 transitions, 9659 flow [2024-06-27 22:27:16,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:16,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:16,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:16,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:27:16,501 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:16,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:16,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1926410406, now seen corresponding path program 5 times [2024-06-27 22:27:16,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:16,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591460715] [2024-06-27 22:27:16,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:16,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:18,099 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 22:27:18,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:18,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591460715] [2024-06-27 22:27:18,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591460715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:18,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:18,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:27:18,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862101741] [2024-06-27 22:27:18,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:18,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:27:18,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:18,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:27:18,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:27:18,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:18,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 599 transitions, 9659 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:18,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:18,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:18,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:20,829 INFO L124 PetriNetUnfolderBase]: 7745/12428 cut-off events. [2024-06-27 22:27:20,829 INFO L125 PetriNetUnfolderBase]: For 403277/403289 co-relation queries the response was YES. [2024-06-27 22:27:20,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80359 conditions, 12428 events. 7745/12428 cut-off events. For 403277/403289 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 83130 event pairs, 2379 based on Foata normal form. 16/12094 useless extension candidates. Maximal degree in co-relation 80227. Up to 10366 conditions per place. [2024-06-27 22:27:20,992 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 523 selfloop transitions, 111 changer transitions 0/644 dead transitions. [2024-06-27 22:27:20,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 644 transitions, 11303 flow [2024-06-27 22:27:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:27:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:27:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-27 22:27:21,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 22:27:21,000 INFO L175 Difference]: Start difference. First operand has 276 places, 599 transitions, 9659 flow. Second operand 9 states and 207 transitions. [2024-06-27 22:27:21,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 644 transitions, 11303 flow [2024-06-27 22:27:22,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 644 transitions, 11052 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 22:27:22,138 INFO L231 Difference]: Finished difference. Result has 277 places, 602 transitions, 9720 flow [2024-06-27 22:27:22,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9408, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9720, PETRI_PLACES=277, PETRI_TRANSITIONS=602} [2024-06-27 22:27:22,138 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 223 predicate places. [2024-06-27 22:27:22,138 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 602 transitions, 9720 flow [2024-06-27 22:27:22,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:22,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:22,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:22,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:27:22,139 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:22,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:22,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1193939719, now seen corresponding path program 3 times [2024-06-27 22:27:22,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:22,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289997402] [2024-06-27 22:27:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:22,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:23,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:23,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289997402] [2024-06-27 22:27:23,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289997402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:23,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:23,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:27:23,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337864386] [2024-06-27 22:27:23,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:23,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:27:23,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:23,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:27:23,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:27:23,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:27:23,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 602 transitions, 9720 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:23,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:23,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:27:23,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:25,282 INFO L124 PetriNetUnfolderBase]: 7226/11530 cut-off events. [2024-06-27 22:27:25,282 INFO L125 PetriNetUnfolderBase]: For 402722/402821 co-relation queries the response was YES. [2024-06-27 22:27:25,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76014 conditions, 11530 events. 7226/11530 cut-off events. For 402722/402821 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 76859 event pairs, 2184 based on Foata normal form. 71/11272 useless extension candidates. Maximal degree in co-relation 75882. Up to 9990 conditions per place. [2024-06-27 22:27:25,441 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 517 selfloop transitions, 59 changer transitions 0/620 dead transitions. [2024-06-27 22:27:25,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 620 transitions, 11016 flow [2024-06-27 22:27:25,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:27:25,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:27:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 22:27:25,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 22:27:25,442 INFO L175 Difference]: Start difference. First operand has 277 places, 602 transitions, 9720 flow. Second operand 6 states and 141 transitions. [2024-06-27 22:27:25,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 620 transitions, 11016 flow [2024-06-27 22:27:26,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 620 transitions, 10728 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-27 22:27:26,390 INFO L231 Difference]: Finished difference. Result has 276 places, 606 transitions, 9613 flow [2024-06-27 22:27:26,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9432, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9613, PETRI_PLACES=276, PETRI_TRANSITIONS=606} [2024-06-27 22:27:26,390 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 222 predicate places. [2024-06-27 22:27:26,390 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 606 transitions, 9613 flow [2024-06-27 22:27:26,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:26,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:26,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:26,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:27:26,391 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:26,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:26,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1188201991, now seen corresponding path program 1 times [2024-06-27 22:27:26,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:26,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675916579] [2024-06-27 22:27:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:26,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:27,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:27,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:27,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675916579] [2024-06-27 22:27:27,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675916579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:27,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:27,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:27:27,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430087067] [2024-06-27 22:27:27,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:27,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:27:27,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:27,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:27:27,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:27:27,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:27:27,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 606 transitions, 9613 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:27,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:27,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:27:27,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:29,359 INFO L124 PetriNetUnfolderBase]: 7103/11394 cut-off events. [2024-06-27 22:27:29,359 INFO L125 PetriNetUnfolderBase]: For 380558/380558 co-relation queries the response was YES. [2024-06-27 22:27:29,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75855 conditions, 11394 events. 7103/11394 cut-off events. For 380558/380558 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 76071 event pairs, 2686 based on Foata normal form. 1/11154 useless extension candidates. Maximal degree in co-relation 75722. Up to 10030 conditions per place. [2024-06-27 22:27:29,504 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 604 selfloop transitions, 16 changer transitions 0/631 dead transitions. [2024-06-27 22:27:29,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 631 transitions, 11113 flow [2024-06-27 22:27:29,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:27:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:27:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 22:27:29,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 22:27:29,505 INFO L175 Difference]: Start difference. First operand has 276 places, 606 transitions, 9613 flow. Second operand 7 states and 154 transitions. [2024-06-27 22:27:29,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 631 transitions, 11113 flow [2024-06-27 22:27:30,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 631 transitions, 10960 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 22:27:30,486 INFO L231 Difference]: Finished difference. Result has 280 places, 614 transitions, 9658 flow [2024-06-27 22:27:30,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9460, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9658, PETRI_PLACES=280, PETRI_TRANSITIONS=614} [2024-06-27 22:27:30,487 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 226 predicate places. [2024-06-27 22:27:30,487 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 614 transitions, 9658 flow [2024-06-27 22:27:30,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:30,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:30,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:30,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:27:30,487 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:30,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:30,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2131324575, now seen corresponding path program 2 times [2024-06-27 22:27:30,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:30,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490064206] [2024-06-27 22:27:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:30,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:31,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490064206] [2024-06-27 22:27:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490064206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:31,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:31,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:27:31,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171714255] [2024-06-27 22:27:31,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:31,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:27:31,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:31,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:27:31,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:27:31,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:27:31,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 614 transitions, 9658 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:31,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:31,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:27:31,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:33,573 INFO L124 PetriNetUnfolderBase]: 7100/11392 cut-off events. [2024-06-27 22:27:33,573 INFO L125 PetriNetUnfolderBase]: For 392342/392348 co-relation queries the response was YES. [2024-06-27 22:27:33,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76786 conditions, 11392 events. 7100/11392 cut-off events. For 392342/392348 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 76071 event pairs, 2692 based on Foata normal form. 7/11158 useless extension candidates. Maximal degree in co-relation 76651. Up to 10012 conditions per place. [2024-06-27 22:27:33,730 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 598 selfloop transitions, 23 changer transitions 0/632 dead transitions. [2024-06-27 22:27:33,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 632 transitions, 11060 flow [2024-06-27 22:27:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:27:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:27:33,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-27 22:27:33,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-27 22:27:33,731 INFO L175 Difference]: Start difference. First operand has 280 places, 614 transitions, 9658 flow. Second operand 7 states and 153 transitions. [2024-06-27 22:27:33,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 632 transitions, 11060 flow [2024-06-27 22:27:34,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 632 transitions, 10992 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 22:27:34,598 INFO L231 Difference]: Finished difference. Result has 284 places, 618 transitions, 9715 flow [2024-06-27 22:27:34,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9590, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9715, PETRI_PLACES=284, PETRI_TRANSITIONS=618} [2024-06-27 22:27:34,599 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 230 predicate places. [2024-06-27 22:27:34,599 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 618 transitions, 9715 flow [2024-06-27 22:27:34,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:34,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:34,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:34,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:27:34,599 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:34,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash -2131315647, now seen corresponding path program 1 times [2024-06-27 22:27:34,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:34,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603069941] [2024-06-27 22:27:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:34,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:35,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:35,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603069941] [2024-06-27 22:27:35,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603069941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:35,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:35,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:27:35,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971228447] [2024-06-27 22:27:35,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:35,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:27:35,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:35,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:27:35,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:27:35,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:27:35,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 618 transitions, 9715 flow. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:35,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:35,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:27:35,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:37,874 INFO L124 PetriNetUnfolderBase]: 6986/11183 cut-off events. [2024-06-27 22:27:37,875 INFO L125 PetriNetUnfolderBase]: For 398622/398734 co-relation queries the response was YES. [2024-06-27 22:27:37,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75727 conditions, 11183 events. 6986/11183 cut-off events. For 398622/398734 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 74695 event pairs, 2847 based on Foata normal form. 88/10974 useless extension candidates. Maximal degree in co-relation 75590. Up to 9834 conditions per place. [2024-06-27 22:27:38,028 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 576 selfloop transitions, 20 changer transitions 0/639 dead transitions. [2024-06-27 22:27:38,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 639 transitions, 11079 flow [2024-06-27 22:27:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:27:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:27:38,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-27 22:27:38,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-06-27 22:27:38,030 INFO L175 Difference]: Start difference. First operand has 284 places, 618 transitions, 9715 flow. Second operand 8 states and 171 transitions. [2024-06-27 22:27:38,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 639 transitions, 11079 flow [2024-06-27 22:27:39,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 639 transitions, 10982 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 22:27:39,157 INFO L231 Difference]: Finished difference. Result has 287 places, 622 transitions, 9727 flow [2024-06-27 22:27:39,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9618, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9727, PETRI_PLACES=287, PETRI_TRANSITIONS=622} [2024-06-27 22:27:39,158 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 233 predicate places. [2024-06-27 22:27:39,158 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 622 transitions, 9727 flow [2024-06-27 22:27:39,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:39,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:39,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:39,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:27:39,159 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:39,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1728722332, now seen corresponding path program 1 times [2024-06-27 22:27:39,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:39,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518150561] [2024-06-27 22:27:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:39,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:40,343 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 22:27:40,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:40,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518150561] [2024-06-27 22:27:40,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518150561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:40,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:40,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:27:40,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130673343] [2024-06-27 22:27:40,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:40,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:27:40,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:40,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:27:40,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:27:40,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:40,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 622 transitions, 9727 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:40,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:40,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:40,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:43,460 INFO L124 PetriNetUnfolderBase]: 8058/12793 cut-off events. [2024-06-27 22:27:43,460 INFO L125 PetriNetUnfolderBase]: For 531670/531676 co-relation queries the response was YES. [2024-06-27 22:27:43,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90311 conditions, 12793 events. 8058/12793 cut-off events. For 531670/531676 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 84893 event pairs, 2509 based on Foata normal form. 22/12484 useless extension candidates. Maximal degree in co-relation 90173. Up to 10082 conditions per place. [2024-06-27 22:27:43,625 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 539 selfloop transitions, 190 changer transitions 0/739 dead transitions. [2024-06-27 22:27:43,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 739 transitions, 12549 flow [2024-06-27 22:27:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:27:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:27:43,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 301 transitions. [2024-06-27 22:27:43,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225694444444444 [2024-06-27 22:27:43,627 INFO L175 Difference]: Start difference. First operand has 287 places, 622 transitions, 9727 flow. Second operand 12 states and 301 transitions. [2024-06-27 22:27:43,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 739 transitions, 12549 flow [2024-06-27 22:27:44,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 739 transitions, 12468 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 22:27:44,715 INFO L231 Difference]: Finished difference. Result has 295 places, 650 transitions, 10672 flow [2024-06-27 22:27:44,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9646, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10672, PETRI_PLACES=295, PETRI_TRANSITIONS=650} [2024-06-27 22:27:44,716 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 241 predicate places. [2024-06-27 22:27:44,716 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 650 transitions, 10672 flow [2024-06-27 22:27:44,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:44,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:44,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:44,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:27:44,718 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:44,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:44,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1444981144, now seen corresponding path program 2 times [2024-06-27 22:27:44,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:44,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347572498] [2024-06-27 22:27:44,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:44,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:45,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:45,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347572498] [2024-06-27 22:27:45,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347572498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:45,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:45,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:27:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144965597] [2024-06-27 22:27:45,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:45,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:27:45,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:27:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:27:46,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:46,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 650 transitions, 10672 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:46,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:46,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:46,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:49,240 INFO L124 PetriNetUnfolderBase]: 8201/13042 cut-off events. [2024-06-27 22:27:49,241 INFO L125 PetriNetUnfolderBase]: For 566484/566490 co-relation queries the response was YES. [2024-06-27 22:27:49,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94067 conditions, 13042 events. 8201/13042 cut-off events. For 566484/566490 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 86918 event pairs, 2815 based on Foata normal form. 26/12745 useless extension candidates. Maximal degree in co-relation 93926. Up to 10981 conditions per place. [2024-06-27 22:27:49,417 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 547 selfloop transitions, 168 changer transitions 0/725 dead transitions. [2024-06-27 22:27:49,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 725 transitions, 12672 flow [2024-06-27 22:27:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:27:49,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:27:49,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 293 transitions. [2024-06-27 22:27:49,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086805555555556 [2024-06-27 22:27:49,419 INFO L175 Difference]: Start difference. First operand has 295 places, 650 transitions, 10672 flow. Second operand 12 states and 293 transitions. [2024-06-27 22:27:49,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 725 transitions, 12672 flow [2024-06-27 22:27:50,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 725 transitions, 12438 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-27 22:27:50,955 INFO L231 Difference]: Finished difference. Result has 302 places, 652 transitions, 10860 flow [2024-06-27 22:27:50,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10440, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10860, PETRI_PLACES=302, PETRI_TRANSITIONS=652} [2024-06-27 22:27:50,956 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 248 predicate places. [2024-06-27 22:27:50,956 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 652 transitions, 10860 flow [2024-06-27 22:27:50,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:50,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:50,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:50,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:27:50,957 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:50,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:50,957 INFO L85 PathProgramCache]: Analyzing trace with hash 180072006, now seen corresponding path program 3 times [2024-06-27 22:27:50,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:50,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091145316] [2024-06-27 22:27:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:50,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:52,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:52,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091145316] [2024-06-27 22:27:52,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091145316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:52,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:52,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:27:52,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295699990] [2024-06-27 22:27:52,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:52,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:27:52,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:52,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:27:52,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:27:52,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:27:52,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 652 transitions, 10860 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:52,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:52,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:27:52,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:27:55,359 INFO L124 PetriNetUnfolderBase]: 8291/13168 cut-off events. [2024-06-27 22:27:55,359 INFO L125 PetriNetUnfolderBase]: For 575765/575771 co-relation queries the response was YES. [2024-06-27 22:27:55,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95144 conditions, 13168 events. 8291/13168 cut-off events. For 575765/575771 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 87788 event pairs, 2750 based on Foata normal form. 22/12867 useless extension candidates. Maximal degree in co-relation 95001. Up to 10845 conditions per place. [2024-06-27 22:27:55,547 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 551 selfloop transitions, 175 changer transitions 0/736 dead transitions. [2024-06-27 22:27:55,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 736 transitions, 12989 flow [2024-06-27 22:27:55,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:27:55,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:27:55,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 297 transitions. [2024-06-27 22:27:55,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-06-27 22:27:55,548 INFO L175 Difference]: Start difference. First operand has 302 places, 652 transitions, 10860 flow. Second operand 12 states and 297 transitions. [2024-06-27 22:27:55,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 736 transitions, 12989 flow [2024-06-27 22:27:57,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 736 transitions, 12630 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 22:27:57,334 INFO L231 Difference]: Finished difference. Result has 306 places, 659 transitions, 11055 flow [2024-06-27 22:27:57,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10501, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11055, PETRI_PLACES=306, PETRI_TRANSITIONS=659} [2024-06-27 22:27:57,335 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 252 predicate places. [2024-06-27 22:27:57,335 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 659 transitions, 11055 flow [2024-06-27 22:27:57,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:57,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:27:57,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:27:57,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:27:57,335 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:27:57,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:27:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1862514318, now seen corresponding path program 4 times [2024-06-27 22:27:57,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:27:57,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400608945] [2024-06-27 22:27:57,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:27:57,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:27:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:27:58,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:27:58,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:27:58,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400608945] [2024-06-27 22:27:58,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400608945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:27:58,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:27:58,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:27:58,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879579380] [2024-06-27 22:27:58,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:27:58,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:27:58,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:27:58,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:27:58,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:27:58,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:27:58,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 659 transitions, 11055 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:27:58,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:27:58,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:27:58,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:01,424 INFO L124 PetriNetUnfolderBase]: 7327/12230 cut-off events. [2024-06-27 22:28:01,424 INFO L125 PetriNetUnfolderBase]: For 596184/596645 co-relation queries the response was YES. [2024-06-27 22:28:01,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90940 conditions, 12230 events. 7327/12230 cut-off events. For 596184/596645 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 87523 event pairs, 1492 based on Foata normal form. 246/12009 useless extension candidates. Maximal degree in co-relation 90795. Up to 7743 conditions per place. [2024-06-27 22:28:01,587 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 456 selfloop transitions, 209 changer transitions 0/793 dead transitions. [2024-06-27 22:28:01,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 793 transitions, 14212 flow [2024-06-27 22:28:01,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:01,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:01,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 297 transitions. [2024-06-27 22:28:01,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 22:28:01,589 INFO L175 Difference]: Start difference. First operand has 306 places, 659 transitions, 11055 flow. Second operand 11 states and 297 transitions. [2024-06-27 22:28:01,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 793 transitions, 14212 flow [2024-06-27 22:28:03,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 793 transitions, 13947 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-27 22:28:03,462 INFO L231 Difference]: Finished difference. Result has 314 places, 705 transitions, 12399 flow [2024-06-27 22:28:03,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10790, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12399, PETRI_PLACES=314, PETRI_TRANSITIONS=705} [2024-06-27 22:28:03,462 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 260 predicate places. [2024-06-27 22:28:03,462 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 705 transitions, 12399 flow [2024-06-27 22:28:03,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:03,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:03,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:03,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:28:03,463 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:03,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:03,463 INFO L85 PathProgramCache]: Analyzing trace with hash -871891804, now seen corresponding path program 5 times [2024-06-27 22:28:03,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:03,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363991528] [2024-06-27 22:28:03,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:03,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:04,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:04,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363991528] [2024-06-27 22:28:04,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363991528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:04,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:04,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:28:04,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59737483] [2024-06-27 22:28:04,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:04,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:28:04,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:04,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:28:04,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:28:05,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:05,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 705 transitions, 12399 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:05,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:05,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:05,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:09,186 INFO L124 PetriNetUnfolderBase]: 9901/15603 cut-off events. [2024-06-27 22:28:09,186 INFO L125 PetriNetUnfolderBase]: For 828343/828349 co-relation queries the response was YES. [2024-06-27 22:28:09,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122924 conditions, 15603 events. 9901/15603 cut-off events. For 828343/828349 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 105846 event pairs, 2987 based on Foata normal form. 30/15306 useless extension candidates. Maximal degree in co-relation 122772. Up to 12039 conditions per place. [2024-06-27 22:28:09,438 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 621 selfloop transitions, 187 changer transitions 0/818 dead transitions. [2024-06-27 22:28:09,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 818 transitions, 15701 flow [2024-06-27 22:28:09,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:28:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:28:09,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-06-27 22:28:09,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-06-27 22:28:09,440 INFO L175 Difference]: Start difference. First operand has 314 places, 705 transitions, 12399 flow. Second operand 11 states and 276 transitions. [2024-06-27 22:28:09,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 818 transitions, 15701 flow [2024-06-27 22:28:13,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 818 transitions, 15292 flow, removed 174 selfloop flow, removed 5 redundant places. [2024-06-27 22:28:13,172 INFO L231 Difference]: Finished difference. Result has 322 places, 735 transitions, 13336 flow [2024-06-27 22:28:13,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=12156, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13336, PETRI_PLACES=322, PETRI_TRANSITIONS=735} [2024-06-27 22:28:13,172 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 268 predicate places. [2024-06-27 22:28:13,172 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 735 transitions, 13336 flow [2024-06-27 22:28:13,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:13,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:13,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:13,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:28:13,173 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:13,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:13,175 INFO L85 PathProgramCache]: Analyzing trace with hash -783326044, now seen corresponding path program 6 times [2024-06-27 22:28:13,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:13,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57726001] [2024-06-27 22:28:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:13,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:14,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:14,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:14,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57726001] [2024-06-27 22:28:14,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57726001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:14,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:14,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:28:14,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241831115] [2024-06-27 22:28:14,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:14,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:28:14,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:14,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:28:14,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:28:14,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:14,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 735 transitions, 13336 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:14,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:14,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:14,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:19,454 INFO L124 PetriNetUnfolderBase]: 10221/16094 cut-off events. [2024-06-27 22:28:19,454 INFO L125 PetriNetUnfolderBase]: For 841725/841731 co-relation queries the response was YES. [2024-06-27 22:28:19,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127443 conditions, 16094 events. 10221/16094 cut-off events. For 841725/841731 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 109670 event pairs, 3180 based on Foata normal form. 38/15805 useless extension candidates. Maximal degree in co-relation 127289. Up to 12983 conditions per place. [2024-06-27 22:28:19,810 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 644 selfloop transitions, 158 changer transitions 0/812 dead transitions. [2024-06-27 22:28:19,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 812 transitions, 15932 flow [2024-06-27 22:28:19,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:19,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-06-27 22:28:19,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229166666666667 [2024-06-27 22:28:19,811 INFO L175 Difference]: Start difference. First operand has 322 places, 735 transitions, 13336 flow. Second operand 10 states and 251 transitions. [2024-06-27 22:28:19,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 812 transitions, 15932 flow [2024-06-27 22:28:22,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 812 transitions, 15601 flow, removed 93 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:22,048 INFO L231 Difference]: Finished difference. Result has 327 places, 747 transitions, 13722 flow [2024-06-27 22:28:22,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=13005, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13722, PETRI_PLACES=327, PETRI_TRANSITIONS=747} [2024-06-27 22:28:22,049 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 273 predicate places. [2024-06-27 22:28:22,049 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 747 transitions, 13722 flow [2024-06-27 22:28:22,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:22,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:22,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:22,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:28:22,050 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:22,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:22,050 INFO L85 PathProgramCache]: Analyzing trace with hash -783178174, now seen corresponding path program 7 times [2024-06-27 22:28:22,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:22,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123955916] [2024-06-27 22:28:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:22,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:23,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:23,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123955916] [2024-06-27 22:28:23,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123955916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:23,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:23,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:28:23,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741845227] [2024-06-27 22:28:23,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:23,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:28:23,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:23,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:28:23,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:28:23,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:23,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 747 transitions, 13722 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:23,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:23,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:23,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:28,265 INFO L124 PetriNetUnfolderBase]: 10139/15978 cut-off events. [2024-06-27 22:28:28,265 INFO L125 PetriNetUnfolderBase]: For 805788/805794 co-relation queries the response was YES. [2024-06-27 22:28:28,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124471 conditions, 15978 events. 10139/15978 cut-off events. For 805788/805794 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 108919 event pairs, 3344 based on Foata normal form. 46/15697 useless extension candidates. Maximal degree in co-relation 124314. Up to 13610 conditions per place. [2024-06-27 22:28:28,513 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 656 selfloop transitions, 139 changer transitions 0/805 dead transitions. [2024-06-27 22:28:28,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 805 transitions, 15798 flow [2024-06-27 22:28:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:28,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-27 22:28:28,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 22:28:28,514 INFO L175 Difference]: Start difference. First operand has 327 places, 747 transitions, 13722 flow. Second operand 10 states and 245 transitions. [2024-06-27 22:28:28,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 805 transitions, 15798 flow [2024-06-27 22:28:31,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 805 transitions, 15210 flow, removed 164 selfloop flow, removed 7 redundant places. [2024-06-27 22:28:31,653 INFO L231 Difference]: Finished difference. Result has 330 places, 750 transitions, 13546 flow [2024-06-27 22:28:31,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=13173, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13546, PETRI_PLACES=330, PETRI_TRANSITIONS=750} [2024-06-27 22:28:31,654 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 276 predicate places. [2024-06-27 22:28:31,654 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 750 transitions, 13546 flow [2024-06-27 22:28:31,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:31,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:31,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:31,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:28:31,654 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:31,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:31,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1498756820, now seen corresponding path program 8 times [2024-06-27 22:28:31,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:31,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879321710] [2024-06-27 22:28:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:31,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:33,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:33,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:33,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879321710] [2024-06-27 22:28:33,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879321710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:33,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:33,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:28:33,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719008437] [2024-06-27 22:28:33,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:33,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:28:33,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:28:33,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:28:33,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:33,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 750 transitions, 13546 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:33,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:33,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:33,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:37,873 INFO L124 PetriNetUnfolderBase]: 10305/16327 cut-off events. [2024-06-27 22:28:37,874 INFO L125 PetriNetUnfolderBase]: For 740688/740694 co-relation queries the response was YES. [2024-06-27 22:28:38,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122716 conditions, 16327 events. 10305/16327 cut-off events. For 740688/740694 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 112235 event pairs, 2931 based on Foata normal form. 22/15988 useless extension candidates. Maximal degree in co-relation 122558. Up to 13325 conditions per place. [2024-06-27 22:28:38,100 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 512 selfloop transitions, 292 changer transitions 0/814 dead transitions. [2024-06-27 22:28:38,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 814 transitions, 15714 flow [2024-06-27 22:28:38,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:38,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:38,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-27 22:28:38,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 22:28:38,103 INFO L175 Difference]: Start difference. First operand has 330 places, 750 transitions, 13546 flow. Second operand 10 states and 256 transitions. [2024-06-27 22:28:38,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 814 transitions, 15714 flow [2024-06-27 22:28:40,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 814 transitions, 15492 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:28:40,575 INFO L231 Difference]: Finished difference. Result has 334 places, 752 transitions, 13988 flow [2024-06-27 22:28:40,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=13324, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=290, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13988, PETRI_PLACES=334, PETRI_TRANSITIONS=752} [2024-06-27 22:28:40,577 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 280 predicate places. [2024-06-27 22:28:40,577 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 752 transitions, 13988 flow [2024-06-27 22:28:40,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:40,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:40,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:40,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:28:40,578 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:40,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1574229236, now seen corresponding path program 9 times [2024-06-27 22:28:40,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:40,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986191] [2024-06-27 22:28:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:40,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:42,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:42,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986191] [2024-06-27 22:28:42,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:42,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:42,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:28:42,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642716735] [2024-06-27 22:28:42,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:42,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:28:42,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:42,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:28:42,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:28:42,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:42,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 752 transitions, 13988 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:42,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:42,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:42,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:28:47,320 INFO L124 PetriNetUnfolderBase]: 10459/16557 cut-off events. [2024-06-27 22:28:47,320 INFO L125 PetriNetUnfolderBase]: For 780236/780242 co-relation queries the response was YES. [2024-06-27 22:28:47,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126250 conditions, 16557 events. 10459/16557 cut-off events. For 780236/780242 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 114060 event pairs, 3026 based on Foata normal form. 22/16218 useless extension candidates. Maximal degree in co-relation 126091. Up to 13559 conditions per place. [2024-06-27 22:28:47,581 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 523 selfloop transitions, 284 changer transitions 0/817 dead transitions. [2024-06-27 22:28:47,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 817 transitions, 16168 flow [2024-06-27 22:28:47,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:28:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:28:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-27 22:28:47,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-27 22:28:47,583 INFO L175 Difference]: Start difference. First operand has 334 places, 752 transitions, 13988 flow. Second operand 10 states and 258 transitions. [2024-06-27 22:28:47,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 817 transitions, 16168 flow [2024-06-27 22:28:50,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 817 transitions, 15544 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 22:28:50,021 INFO L231 Difference]: Finished difference. Result has 336 places, 754 transitions, 14016 flow [2024-06-27 22:28:50,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=13364, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14016, PETRI_PLACES=336, PETRI_TRANSITIONS=754} [2024-06-27 22:28:50,022 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 282 predicate places. [2024-06-27 22:28:50,022 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 754 transitions, 14016 flow [2024-06-27 22:28:50,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:50,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:28:50,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:28:50,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:28:50,023 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:28:50,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:28:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash -811240582, now seen corresponding path program 10 times [2024-06-27 22:28:50,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:28:50,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542739782] [2024-06-27 22:28:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:28:50,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:28:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:28:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:28:51,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:28:51,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542739782] [2024-06-27 22:28:51,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542739782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:28:51,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:28:51,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:28:51,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922458364] [2024-06-27 22:28:51,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:28:51,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:28:51,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:28:51,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:28:51,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:28:51,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-27 22:28:51,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 754 transitions, 14016 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:28:51,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:28:51,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-27 22:28:51,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand