./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.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/mix025_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix025_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:15:20,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:15:20,387 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:15:20,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:15:20,392 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:15:20,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:15:20,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:15:20,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:15:20,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:15:20,421 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:15:20,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:15:20,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:15:20,422 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:15:20,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:15:20,423 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:15:20,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:15:20,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:15:20,424 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:15:20,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:15:20,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:15:20,425 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:15:20,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:15:20,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:15:20,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:15:20,426 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:15:20,426 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:15:20,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:15:20,426 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:15:20,427 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:15:20,427 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:15:20,428 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:15:20,428 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:15:20,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:15:20,428 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:15:20,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:15:20,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:15:20,429 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:15:20,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:15:20,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:15:20,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:15:20,429 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:15:20,430 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:15:20,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:15:20,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:15:20,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:15:20,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:15:20,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:15:20,657 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:15:20,658 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:15:20,659 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix025_pso.opt_rmo.opt.yml/witness.yml [2024-06-27 22:15:20,731 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:15:20,731 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:15:20,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i [2024-06-27 22:15:21,767 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:15:21,956 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:15:21,957 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix025_pso.opt_rmo.opt.i [2024-06-27 22:15:21,973 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/024b4d418/24536b36de2946f28acdaa5395b7fed7/FLAGd3d446908 [2024-06-27 22:15:21,984 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/024b4d418/24536b36de2946f28acdaa5395b7fed7 [2024-06-27 22:15:21,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:15:21,986 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:15:21,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:15:21,987 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:15:21,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:15:21,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:15:20" (1/2) ... [2024-06-27 22:15:21,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6235e139 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:15:21, skipping insertion in model container [2024-06-27 22:15:21,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:15:20" (1/2) ... [2024-06-27 22:15:21,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3a6779b5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:15:21, skipping insertion in model container [2024-06-27 22:15:21,993 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:15:21" (2/2) ... [2024-06-27 22:15:21,995 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6235e139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:21, skipping insertion in model container [2024-06-27 22:15:21,995 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:15:21" (2/2) ... [2024-06-27 22:15:21,995 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:15:22,016 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:15:22,017 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 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 )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:15:22,018 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 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 )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:15:22,018 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$mem_tmp >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )__unbuffered_p0_EAX) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$r_buff0_thd2 >= 0LL) && (0LL - (long long )x$mem_tmp) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 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 )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice0 >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )x$mem_tmp >= 0LL) && (long long )x - (long long )x$mem_tmp >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1 >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:15:22,019 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:15:22,019 INFO L106 edCorrectnessWitness]: ghost_update [L835-L835] multithreaded = 1; [2024-06-27 22:15:22,054 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:15:22,228 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/mix025_pso.opt_rmo.opt.i[999,1012] [2024-06-27 22:15:22,354 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:15:22,364 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:15:22,390 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/mix025_pso.opt_rmo.opt.i[999,1012] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:15:22,502 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:15:22,534 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:15:22,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22 WrapperNode [2024-06-27 22:15:22,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:15:22,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:15:22,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:15:22,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:15:22,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (1/1) ... [2024-06-27 22:15:22,570 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (1/1) ... [2024-06-27 22:15:22,616 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 122 [2024-06-27 22:15:22,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:15:22,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:15:22,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:15:22,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:15:22,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (1/1) ... [2024-06-27 22:15:22,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (1/1) ... [2024-06-27 22:15:22,634 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (1/1) ... [2024-06-27 22:15:22,669 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 22:15:22,670 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (1/1) ... [2024-06-27 22:15:22,670 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (1/1) ... [2024-06-27 22:15:22,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (1/1) ... [2024-06-27 22:15:22,692 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (1/1) ... [2024-06-27 22:15:22,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (1/1) ... [2024-06-27 22:15:22,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (1/1) ... [2024-06-27 22:15:22,701 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:15:22,707 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:15:22,707 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:15:22,707 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:15:22,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (1/1) ... [2024-06-27 22:15:22,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:15:22,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:15:22,732 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 22:15:22,737 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 22:15:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:15:22,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:15:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:15:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:15:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:15:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:15:22,770 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:15:22,770 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:15:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:15:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:15:22,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:15:22,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:15:22,773 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 22:15:22,895 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:15:22,897 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:15:23,288 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:15:23,288 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:15:23,431 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:15:23,431 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:15:23,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:15:23 BoogieIcfgContainer [2024-06-27 22:15:23,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:15:23,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:15:23,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:15:23,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:15:23,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:15:20" (1/4) ... [2024-06-27 22:15:23,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d78b4a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:15:23, skipping insertion in model container [2024-06-27 22:15:23,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:15:21" (2/4) ... [2024-06-27 22:15:23,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d78b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:15:23, skipping insertion in model container [2024-06-27 22:15:23,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:15:22" (3/4) ... [2024-06-27 22:15:23,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d78b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:15:23, skipping insertion in model container [2024-06-27 22:15:23,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:15:23" (4/4) ... [2024-06-27 22:15:23,440 INFO L112 eAbstractionObserver]: Analyzing ICFG mix025_pso.opt_rmo.opt.i [2024-06-27 22:15:23,452 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:15:23,452 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:15:23,453 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:15:23,499 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:15:23,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:15:23,563 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 22:15:23,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:15:23,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 22:15:23,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 22:15:23,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 22:15:23,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:15:23,583 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;@521e2389, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:15:23,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:15:23,588 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:15:23,588 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 22:15:23,588 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:15:23,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:23,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:15:23,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:23,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:23,593 INFO L85 PathProgramCache]: Analyzing trace with hash 345069058, now seen corresponding path program 1 times [2024-06-27 22:15:23,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:23,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651004583] [2024-06-27 22:15:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:23,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:24,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:24,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651004583] [2024-06-27 22:15:24,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651004583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:24,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:24,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:15:24,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942170172] [2024-06-27 22:15:24,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:24,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:15:24,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:24,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:15:24,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:15:24,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 22:15:24,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 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 22:15:24,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:24,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 22:15:24,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:25,439 INFO L124 PetriNetUnfolderBase]: 3050/5165 cut-off events. [2024-06-27 22:15:25,439 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-06-27 22:15:25,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9672 conditions, 5165 events. 3050/5165 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 34015 event pairs, 2475 based on Foata normal form. 140/4832 useless extension candidates. Maximal degree in co-relation 9660. Up to 4410 conditions per place. [2024-06-27 22:15:25,468 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 40 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2024-06-27 22:15:25,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 217 flow [2024-06-27 22:15:25,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:15:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:15:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-27 22:15:25,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6950354609929078 [2024-06-27 22:15:25,480 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 98 transitions. [2024-06-27 22:15:25,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 217 flow [2024-06-27 22:15:25,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:15:25,487 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 124 flow [2024-06-27 22:15:25,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-27 22:15:25,492 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 22:15:25,492 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 124 flow [2024-06-27 22:15:25,492 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 22:15:25,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:25,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:25,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:15:25,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:25,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:25,494 INFO L85 PathProgramCache]: Analyzing trace with hash 899270537, now seen corresponding path program 1 times [2024-06-27 22:15:25,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:25,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315091561] [2024-06-27 22:15:25,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:25,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:26,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:26,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315091561] [2024-06-27 22:15:26,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315091561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:26,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:26,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:15:26,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671716263] [2024-06-27 22:15:26,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:26,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:15:26,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:26,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:15:26,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:15:26,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 22:15:26,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 124 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 22:15:26,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:26,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 22:15:26,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:26,998 INFO L124 PetriNetUnfolderBase]: 3632/5425 cut-off events. [2024-06-27 22:15:26,998 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-27 22:15:27,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11985 conditions, 5425 events. 3632/5425 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 31228 event pairs, 1819 based on Foata normal form. 3/5217 useless extension candidates. Maximal degree in co-relation 11973. Up to 5200 conditions per place. [2024-06-27 22:15:27,024 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 52 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2024-06-27 22:15:27,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 304 flow [2024-06-27 22:15:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:15:27,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:15:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-27 22:15:27,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6542553191489362 [2024-06-27 22:15:27,026 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 124 flow. Second operand 4 states and 123 transitions. [2024-06-27 22:15:27,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 304 flow [2024-06-27 22:15:27,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:15:27,028 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 162 flow [2024-06-27 22:15:27,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-27 22:15:27,029 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-27 22:15:27,029 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 162 flow [2024-06-27 22:15:27,030 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 22:15:27,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:27,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:27,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:15:27,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:27,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:27,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2107584233, now seen corresponding path program 1 times [2024-06-27 22:15:27,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:27,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235956244] [2024-06-27 22:15:27,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:27,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:28,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:28,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235956244] [2024-06-27 22:15:28,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235956244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:28,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:28,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:15:28,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109235798] [2024-06-27 22:15:28,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:28,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:15:28,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:28,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:15:28,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:15:28,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 22:15:28,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:28,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:28,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 22:15:28,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:29,104 INFO L124 PetriNetUnfolderBase]: 3598/5371 cut-off events. [2024-06-27 22:15:29,105 INFO L125 PetriNetUnfolderBase]: For 2025/2025 co-relation queries the response was YES. [2024-06-27 22:15:29,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13058 conditions, 5371 events. 3598/5371 cut-off events. For 2025/2025 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 30772 event pairs, 1458 based on Foata normal form. 3/5174 useless extension candidates. Maximal degree in co-relation 13044. Up to 5129 conditions per place. [2024-06-27 22:15:29,135 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 63 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-06-27 22:15:29,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 85 transitions, 400 flow [2024-06-27 22:15:29,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:15:29,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:15:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-06-27 22:15:29,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6468085106382979 [2024-06-27 22:15:29,140 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 162 flow. Second operand 5 states and 152 transitions. [2024-06-27 22:15:29,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 85 transitions, 400 flow [2024-06-27 22:15:29,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 386 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:15:29,145 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 200 flow [2024-06-27 22:15:29,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=148, 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=5, PETRI_FLOW=200, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-06-27 22:15:29,146 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-06-27 22:15:29,146 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 200 flow [2024-06-27 22:15:29,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:29,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:29,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:29,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:15:29,147 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:29,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:29,148 INFO L85 PathProgramCache]: Analyzing trace with hash 742336336, now seen corresponding path program 1 times [2024-06-27 22:15:29,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:29,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442335087] [2024-06-27 22:15:29,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:29,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:30,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:30,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442335087] [2024-06-27 22:15:30,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442335087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:30,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:30,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:15:30,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134568785] [2024-06-27 22:15:30,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:30,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:15:30,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:30,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:15:30,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:15:30,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 22:15:30,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:30,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:30,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 22:15:30,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:31,453 INFO L124 PetriNetUnfolderBase]: 3544/5277 cut-off events. [2024-06-27 22:15:31,454 INFO L125 PetriNetUnfolderBase]: For 3690/3690 co-relation queries the response was YES. [2024-06-27 22:15:31,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13906 conditions, 5277 events. 3544/5277 cut-off events. For 3690/3690 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 29932 event pairs, 1050 based on Foata normal form. 6/5105 useless extension candidates. Maximal degree in co-relation 13891. Up to 5001 conditions per place. [2024-06-27 22:15:31,484 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 71 selfloop transitions, 12 changer transitions 0/95 dead transitions. [2024-06-27 22:15:31,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 472 flow [2024-06-27 22:15:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:15:31,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:15:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-27 22:15:31,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6276595744680851 [2024-06-27 22:15:31,487 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 200 flow. Second operand 6 states and 177 transitions. [2024-06-27 22:15:31,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 472 flow [2024-06-27 22:15:31,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 448 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 22:15:31,491 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 221 flow [2024-06-27 22:15:31,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-06-27 22:15:31,492 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-06-27 22:15:31,492 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 221 flow [2024-06-27 22:15:31,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:31,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:31,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:31,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:15:31,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:31,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:31,494 INFO L85 PathProgramCache]: Analyzing trace with hash -123863746, now seen corresponding path program 1 times [2024-06-27 22:15:31,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:31,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212946498] [2024-06-27 22:15:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:31,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:32,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:32,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212946498] [2024-06-27 22:15:32,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212946498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:32,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:32,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:15:32,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203350240] [2024-06-27 22:15:32,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:32,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:15:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:15:32,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:15:32,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:32,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 221 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 22:15:32,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:32,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:32,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:33,107 INFO L124 PetriNetUnfolderBase]: 4048/6632 cut-off events. [2024-06-27 22:15:33,108 INFO L125 PetriNetUnfolderBase]: For 7078/7078 co-relation queries the response was YES. [2024-06-27 22:15:33,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17208 conditions, 6632 events. 4048/6632 cut-off events. For 7078/7078 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 43246 event pairs, 2628 based on Foata normal form. 2/6215 useless extension candidates. Maximal degree in co-relation 17191. Up to 5789 conditions per place. [2024-06-27 22:15:33,134 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 55 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2024-06-27 22:15:33,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 439 flow [2024-06-27 22:15:33,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:15:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:15:33,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 22:15:33,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 22:15:33,135 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 221 flow. Second operand 5 states and 123 transitions. [2024-06-27 22:15:33,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 439 flow [2024-06-27 22:15:33,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 77 transitions, 398 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:15:33,139 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 289 flow [2024-06-27 22:15:33,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2024-06-27 22:15:33,140 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2024-06-27 22:15:33,140 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 289 flow [2024-06-27 22:15:33,140 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 22:15:33,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:33,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:33,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:15:33,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:33,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash 455191939, now seen corresponding path program 1 times [2024-06-27 22:15:33,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:33,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041013920] [2024-06-27 22:15:33,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:33,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:34,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:34,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041013920] [2024-06-27 22:15:34,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041013920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:34,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:34,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:15:34,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690878662] [2024-06-27 22:15:34,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:34,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:15:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:34,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:15:34,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:15:34,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:15:34,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 289 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 22:15:34,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:34,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:15:34,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:35,226 INFO L124 PetriNetUnfolderBase]: 4766/7672 cut-off events. [2024-06-27 22:15:35,226 INFO L125 PetriNetUnfolderBase]: For 10776/10776 co-relation queries the response was YES. [2024-06-27 22:15:35,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21127 conditions, 7672 events. 4766/7672 cut-off events. For 10776/10776 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 49597 event pairs, 2977 based on Foata normal form. 3/7199 useless extension candidates. Maximal degree in co-relation 21105. Up to 6740 conditions per place. [2024-06-27 22:15:35,268 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 66 selfloop transitions, 25 changer transitions 0/100 dead transitions. [2024-06-27 22:15:35,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 100 transitions, 619 flow [2024-06-27 22:15:35,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:15:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:15:35,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 22:15:35,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-27 22:15:35,269 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 289 flow. Second operand 7 states and 160 transitions. [2024-06-27 22:15:35,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 100 transitions, 619 flow [2024-06-27 22:15:35,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 100 transitions, 609 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-27 22:15:35,277 INFO L231 Difference]: Finished difference. Result has 73 places, 78 transitions, 452 flow [2024-06-27 22:15:35,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=73, PETRI_TRANSITIONS=78} [2024-06-27 22:15:35,277 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2024-06-27 22:15:35,278 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 78 transitions, 452 flow [2024-06-27 22:15:35,278 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 22:15:35,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:35,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:35,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:15:35,278 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:35,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:35,279 INFO L85 PathProgramCache]: Analyzing trace with hash -157193317, now seen corresponding path program 1 times [2024-06-27 22:15:35,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:35,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515653724] [2024-06-27 22:15:35,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:35,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:36,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:36,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515653724] [2024-06-27 22:15:36,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515653724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:36,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:36,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:15:36,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501811627] [2024-06-27 22:15:36,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:36,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:15:36,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:36,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:15:36,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:15:36,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:36,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 78 transitions, 452 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 22:15:36,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:36,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:36,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:37,028 INFO L124 PetriNetUnfolderBase]: 4574/7455 cut-off events. [2024-06-27 22:15:37,029 INFO L125 PetriNetUnfolderBase]: For 15422/15432 co-relation queries the response was YES. [2024-06-27 22:15:37,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22802 conditions, 7455 events. 4574/7455 cut-off events. For 15422/15432 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 48707 event pairs, 2627 based on Foata normal form. 2/6949 useless extension candidates. Maximal degree in co-relation 22774. Up to 6457 conditions per place. [2024-06-27 22:15:37,083 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 85 selfloop transitions, 22 changer transitions 0/120 dead transitions. [2024-06-27 22:15:37,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 120 transitions, 812 flow [2024-06-27 22:15:37,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:15:37,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:15:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 22:15:37,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-27 22:15:37,085 INFO L175 Difference]: Start difference. First operand has 73 places, 78 transitions, 452 flow. Second operand 7 states and 172 transitions. [2024-06-27 22:15:37,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 120 transitions, 812 flow [2024-06-27 22:15:37,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 120 transitions, 791 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 22:15:37,101 INFO L231 Difference]: Finished difference. Result has 79 places, 93 transitions, 591 flow [2024-06-27 22:15:37,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=591, PETRI_PLACES=79, PETRI_TRANSITIONS=93} [2024-06-27 22:15:37,101 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2024-06-27 22:15:37,102 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 93 transitions, 591 flow [2024-06-27 22:15:37,102 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 22:15:37,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:37,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:37,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:15:37,102 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:37,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:37,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2130747853, now seen corresponding path program 2 times [2024-06-27 22:15:37,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:37,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808650882] [2024-06-27 22:15:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:37,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:37,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:37,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808650882] [2024-06-27 22:15:37,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808650882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:37,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:37,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:15:37,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713102096] [2024-06-27 22:15:37,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:37,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:15:37,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:37,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:15:37,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:15:38,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:38,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 93 transitions, 591 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 22:15:38,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:38,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:38,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:38,943 INFO L124 PetriNetUnfolderBase]: 4578/7489 cut-off events. [2024-06-27 22:15:38,944 INFO L125 PetriNetUnfolderBase]: For 20551/20563 co-relation queries the response was YES. [2024-06-27 22:15:38,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24612 conditions, 7489 events. 4578/7489 cut-off events. For 20551/20563 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 49195 event pairs, 2580 based on Foata normal form. 2/6985 useless extension candidates. Maximal degree in co-relation 24581. Up to 6450 conditions per place. [2024-06-27 22:15:38,989 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 84 selfloop transitions, 29 changer transitions 0/126 dead transitions. [2024-06-27 22:15:38,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 126 transitions, 995 flow [2024-06-27 22:15:38,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:15:38,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:15:38,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 22:15:38,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-06-27 22:15:38,992 INFO L175 Difference]: Start difference. First operand has 79 places, 93 transitions, 591 flow. Second operand 6 states and 149 transitions. [2024-06-27 22:15:38,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 126 transitions, 995 flow [2024-06-27 22:15:39,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 126 transitions, 935 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-06-27 22:15:39,014 INFO L231 Difference]: Finished difference. Result has 84 places, 106 transitions, 737 flow [2024-06-27 22:15:39,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=737, PETRI_PLACES=84, PETRI_TRANSITIONS=106} [2024-06-27 22:15:39,016 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2024-06-27 22:15:39,016 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 106 transitions, 737 flow [2024-06-27 22:15:39,016 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 22:15:39,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:39,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:39,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:15:39,017 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:39,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:39,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2140325883, now seen corresponding path program 3 times [2024-06-27 22:15:39,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:39,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628982992] [2024-06-27 22:15:39,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:39,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:39,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628982992] [2024-06-27 22:15:39,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628982992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:39,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:39,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:15:39,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11640412] [2024-06-27 22:15:39,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:39,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:15:39,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:39,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:15:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:15:40,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:40,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 106 transitions, 737 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 22:15:40,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:40,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:40,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:40,896 INFO L124 PetriNetUnfolderBase]: 4573/7483 cut-off events. [2024-06-27 22:15:40,896 INFO L125 PetriNetUnfolderBase]: For 26113/26127 co-relation queries the response was YES. [2024-06-27 22:15:40,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25940 conditions, 7483 events. 4573/7483 cut-off events. For 26113/26127 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 49231 event pairs, 2585 based on Foata normal form. 2/6979 useless extension candidates. Maximal degree in co-relation 25906. Up to 6404 conditions per place. [2024-06-27 22:15:40,948 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 77 selfloop transitions, 40 changer transitions 0/130 dead transitions. [2024-06-27 22:15:40,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 130 transitions, 1077 flow [2024-06-27 22:15:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:15:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:15:40,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 22:15:40,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283687943262412 [2024-06-27 22:15:40,950 INFO L175 Difference]: Start difference. First operand has 84 places, 106 transitions, 737 flow. Second operand 6 states and 149 transitions. [2024-06-27 22:15:40,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 130 transitions, 1077 flow [2024-06-27 22:15:40,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 130 transitions, 1032 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-27 22:15:40,975 INFO L231 Difference]: Finished difference. Result has 89 places, 110 transitions, 835 flow [2024-06-27 22:15:40,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=835, PETRI_PLACES=89, PETRI_TRANSITIONS=110} [2024-06-27 22:15:40,976 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2024-06-27 22:15:40,976 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 110 transitions, 835 flow [2024-06-27 22:15:40,977 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 22:15:40,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:40,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:40,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:15:40,978 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:40,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1226049021, now seen corresponding path program 1 times [2024-06-27 22:15:40,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:40,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923492157] [2024-06-27 22:15:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:40,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:42,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:42,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923492157] [2024-06-27 22:15:42,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923492157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:42,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:42,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:15:42,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215491563] [2024-06-27 22:15:42,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:42,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:15:42,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:42,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:15:42,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:15:42,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:42,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 110 transitions, 835 flow. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:42,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:42,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:42,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:43,543 INFO L124 PetriNetUnfolderBase]: 4145/6949 cut-off events. [2024-06-27 22:15:43,544 INFO L125 PetriNetUnfolderBase]: For 30991/30991 co-relation queries the response was YES. [2024-06-27 22:15:43,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25250 conditions, 6949 events. 4145/6949 cut-off events. For 30991/30991 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 46193 event pairs, 2441 based on Foata normal form. 8/6558 useless extension candidates. Maximal degree in co-relation 25213. Up to 5846 conditions per place. [2024-06-27 22:15:43,590 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 105 selfloop transitions, 28 changer transitions 1/144 dead transitions. [2024-06-27 22:15:43,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 144 transitions, 1258 flow [2024-06-27 22:15:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 22:15:43,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 22:15:43,591 INFO L175 Difference]: Start difference. First operand has 89 places, 110 transitions, 835 flow. Second operand 8 states and 192 transitions. [2024-06-27 22:15:43,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 144 transitions, 1258 flow [2024-06-27 22:15:43,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 144 transitions, 1145 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 22:15:43,617 INFO L231 Difference]: Finished difference. Result has 93 places, 113 transitions, 816 flow [2024-06-27 22:15:43,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=816, PETRI_PLACES=93, PETRI_TRANSITIONS=113} [2024-06-27 22:15:43,618 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2024-06-27 22:15:43,618 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 113 transitions, 816 flow [2024-06-27 22:15:43,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:43,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:43,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:43,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:15:43,619 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:43,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1354080315, now seen corresponding path program 1 times [2024-06-27 22:15:43,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:43,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266298594] [2024-06-27 22:15:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:43,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:44,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:44,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:44,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266298594] [2024-06-27 22:15:44,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266298594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:44,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:44,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:15:44,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253681898] [2024-06-27 22:15:44,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:44,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:15:44,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:44,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:15:44,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:15:44,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:44,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 113 transitions, 816 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:44,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:44,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:44,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:45,754 INFO L124 PetriNetUnfolderBase]: 4587/7582 cut-off events. [2024-06-27 22:15:45,755 INFO L125 PetriNetUnfolderBase]: For 38622/38664 co-relation queries the response was YES. [2024-06-27 22:15:45,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28813 conditions, 7582 events. 4587/7582 cut-off events. For 38622/38664 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 50074 event pairs, 2445 based on Foata normal form. 9/7099 useless extension candidates. Maximal degree in co-relation 28775. Up to 6405 conditions per place. [2024-06-27 22:15:45,798 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 114 selfloop transitions, 35 changer transitions 0/163 dead transitions. [2024-06-27 22:15:45,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 163 transitions, 1334 flow [2024-06-27 22:15:45,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:45,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:45,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:15:45,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 22:15:45,800 INFO L175 Difference]: Start difference. First operand has 93 places, 113 transitions, 816 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:15:45,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 163 transitions, 1334 flow [2024-06-27 22:15:45,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 163 transitions, 1265 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 22:15:45,824 INFO L231 Difference]: Finished difference. Result has 96 places, 128 transitions, 973 flow [2024-06-27 22:15:45,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=973, PETRI_PLACES=96, PETRI_TRANSITIONS=128} [2024-06-27 22:15:45,824 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2024-06-27 22:15:45,825 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 128 transitions, 973 flow [2024-06-27 22:15:45,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:45,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:45,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:45,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:15:45,825 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:45,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:45,825 INFO L85 PathProgramCache]: Analyzing trace with hash -608648019, now seen corresponding path program 2 times [2024-06-27 22:15:45,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:45,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904193246] [2024-06-27 22:15:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:45,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:47,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:47,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904193246] [2024-06-27 22:15:47,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904193246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:47,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:47,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:15:47,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618454802] [2024-06-27 22:15:47,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:47,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:15:47,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:15:47,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:15:47,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:47,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 128 transitions, 973 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:47,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:47,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:47,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:48,124 INFO L124 PetriNetUnfolderBase]: 4641/7707 cut-off events. [2024-06-27 22:15:48,124 INFO L125 PetriNetUnfolderBase]: For 46124/46161 co-relation queries the response was YES. [2024-06-27 22:15:48,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30922 conditions, 7707 events. 4641/7707 cut-off events. For 46124/46161 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 50772 event pairs, 2199 based on Foata normal form. 9/7244 useless extension candidates. Maximal degree in co-relation 30882. Up to 6460 conditions per place. [2024-06-27 22:15:48,172 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 117 selfloop transitions, 48 changer transitions 0/179 dead transitions. [2024-06-27 22:15:48,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 179 transitions, 1622 flow [2024-06-27 22:15:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:48,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:15:48,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 22:15:48,189 INFO L175 Difference]: Start difference. First operand has 96 places, 128 transitions, 973 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:15:48,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 179 transitions, 1622 flow [2024-06-27 22:15:48,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 179 transitions, 1463 flow, removed 68 selfloop flow, removed 3 redundant places. [2024-06-27 22:15:48,240 INFO L231 Difference]: Finished difference. Result has 102 places, 146 transitions, 1166 flow [2024-06-27 22:15:48,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1166, PETRI_PLACES=102, PETRI_TRANSITIONS=146} [2024-06-27 22:15:48,241 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2024-06-27 22:15:48,241 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 146 transitions, 1166 flow [2024-06-27 22:15:48,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:48,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:48,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:48,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:15:48,242 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:48,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:48,242 INFO L85 PathProgramCache]: Analyzing trace with hash -608527119, now seen corresponding path program 3 times [2024-06-27 22:15:48,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:48,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225408507] [2024-06-27 22:15:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:48,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:49,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:49,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225408507] [2024-06-27 22:15:49,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225408507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:49,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:49,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:15:49,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340486926] [2024-06-27 22:15:49,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:49,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:15:49,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:49,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:15:49,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:15:49,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:49,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 146 transitions, 1166 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:49,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:49,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:49,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:50,678 INFO L124 PetriNetUnfolderBase]: 4661/7733 cut-off events. [2024-06-27 22:15:50,678 INFO L125 PetriNetUnfolderBase]: For 54365/54398 co-relation queries the response was YES. [2024-06-27 22:15:50,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32490 conditions, 7733 events. 4661/7733 cut-off events. For 54365/54398 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 50941 event pairs, 2200 based on Foata normal form. 3/7263 useless extension candidates. Maximal degree in co-relation 32447. Up to 6435 conditions per place. [2024-06-27 22:15:50,719 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 107 selfloop transitions, 62 changer transitions 0/183 dead transitions. [2024-06-27 22:15:50,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 183 transitions, 1684 flow [2024-06-27 22:15:50,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:50,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 22:15:50,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 22:15:50,722 INFO L175 Difference]: Start difference. First operand has 102 places, 146 transitions, 1166 flow. Second operand 8 states and 198 transitions. [2024-06-27 22:15:50,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 183 transitions, 1684 flow [2024-06-27 22:15:50,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 183 transitions, 1599 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 22:15:50,754 INFO L231 Difference]: Finished difference. Result has 107 places, 150 transitions, 1289 flow [2024-06-27 22:15:50,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1289, PETRI_PLACES=107, PETRI_TRANSITIONS=150} [2024-06-27 22:15:50,754 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2024-06-27 22:15:50,754 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 150 transitions, 1289 flow [2024-06-27 22:15:50,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:50,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:50,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:50,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:15:50,755 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:50,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:50,755 INFO L85 PathProgramCache]: Analyzing trace with hash -608526902, now seen corresponding path program 1 times [2024-06-27 22:15:50,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:50,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464597977] [2024-06-27 22:15:50,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:50,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:51,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:51,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464597977] [2024-06-27 22:15:51,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464597977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:51,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:51,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:15:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019139077] [2024-06-27 22:15:51,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:51,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:15:51,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:51,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:15:51,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:15:51,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:15:51,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 150 transitions, 1289 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 22:15:51,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:51,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:15:51,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:52,864 INFO L124 PetriNetUnfolderBase]: 5056/8207 cut-off events. [2024-06-27 22:15:52,864 INFO L125 PetriNetUnfolderBase]: For 66184/66190 co-relation queries the response was YES. [2024-06-27 22:15:52,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36065 conditions, 8207 events. 5056/8207 cut-off events. For 66184/66190 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 53006 event pairs, 2633 based on Foata normal form. 9/7740 useless extension candidates. Maximal degree in co-relation 36021. Up to 7065 conditions per place. [2024-06-27 22:15:52,909 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 149 selfloop transitions, 50 changer transitions 0/208 dead transitions. [2024-06-27 22:15:52,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 208 transitions, 2157 flow [2024-06-27 22:15:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 22:15:52,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:15:52,911 INFO L175 Difference]: Start difference. First operand has 107 places, 150 transitions, 1289 flow. Second operand 8 states and 200 transitions. [2024-06-27 22:15:52,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 208 transitions, 2157 flow [2024-06-27 22:15:52,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 208 transitions, 1981 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 22:15:52,945 INFO L231 Difference]: Finished difference. Result has 111 places, 171 transitions, 1518 flow [2024-06-27 22:15:52,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1518, PETRI_PLACES=111, PETRI_TRANSITIONS=171} [2024-06-27 22:15:52,945 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 58 predicate places. [2024-06-27 22:15:52,946 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 171 transitions, 1518 flow [2024-06-27 22:15:52,946 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 22:15:52,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:52,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:52,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:15:52,946 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:52,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:52,946 INFO L85 PathProgramCache]: Analyzing trace with hash -825637209, now seen corresponding path program 4 times [2024-06-27 22:15:52,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:52,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950903948] [2024-06-27 22:15:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:52,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:54,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:54,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950903948] [2024-06-27 22:15:54,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950903948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:54,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:54,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:15:54,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614891378] [2024-06-27 22:15:54,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:54,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:15:54,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:54,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:15:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:15:54,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:54,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 171 transitions, 1518 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:54,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:54,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:54,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:55,405 INFO L124 PetriNetUnfolderBase]: 4897/8093 cut-off events. [2024-06-27 22:15:55,406 INFO L125 PetriNetUnfolderBase]: For 78438/78469 co-relation queries the response was YES. [2024-06-27 22:15:55,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38087 conditions, 8093 events. 4897/8093 cut-off events. For 78438/78469 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 53221 event pairs, 1995 based on Foata normal form. 3/7604 useless extension candidates. Maximal degree in co-relation 38040. Up to 6686 conditions per place. [2024-06-27 22:15:55,460 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 155 selfloop transitions, 68 changer transitions 0/241 dead transitions. [2024-06-27 22:15:55,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 241 transitions, 2390 flow [2024-06-27 22:15:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:15:55,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:15:55,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 22:15:55,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 22:15:55,462 INFO L175 Difference]: Start difference. First operand has 111 places, 171 transitions, 1518 flow. Second operand 8 states and 196 transitions. [2024-06-27 22:15:55,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 241 transitions, 2390 flow [2024-06-27 22:15:55,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 241 transitions, 2277 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-27 22:15:55,547 INFO L231 Difference]: Finished difference. Result has 117 places, 203 transitions, 1900 flow [2024-06-27 22:15:55,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1900, PETRI_PLACES=117, PETRI_TRANSITIONS=203} [2024-06-27 22:15:55,547 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-06-27 22:15:55,548 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 203 transitions, 1900 flow [2024-06-27 22:15:55,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:55,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:55,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:55,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:15:55,548 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:55,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:55,549 INFO L85 PathProgramCache]: Analyzing trace with hash -825516092, now seen corresponding path program 2 times [2024-06-27 22:15:55,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:55,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062470607] [2024-06-27 22:15:55,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:55,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:56,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:56,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062470607] [2024-06-27 22:15:56,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062470607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:56,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:56,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:15:56,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915259492] [2024-06-27 22:15:56,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:56,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:15:56,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:56,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:15:56,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:15:56,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:15:56,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 203 transitions, 1900 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 22:15:56,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:56,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:15:56,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:15:57,779 INFO L124 PetriNetUnfolderBase]: 5306/8543 cut-off events. [2024-06-27 22:15:57,779 INFO L125 PetriNetUnfolderBase]: For 94809/94815 co-relation queries the response was YES. [2024-06-27 22:15:57,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41673 conditions, 8543 events. 5306/8543 cut-off events. For 94809/94815 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 54774 event pairs, 2592 based on Foata normal form. 9/8084 useless extension candidates. Maximal degree in co-relation 41624. Up to 7369 conditions per place. [2024-06-27 22:15:57,827 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 186 selfloop transitions, 62 changer transitions 0/257 dead transitions. [2024-06-27 22:15:57,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 257 transitions, 2887 flow [2024-06-27 22:15:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:15:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:15:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 22:15:57,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 22:15:57,828 INFO L175 Difference]: Start difference. First operand has 117 places, 203 transitions, 1900 flow. Second operand 7 states and 176 transitions. [2024-06-27 22:15:57,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 257 transitions, 2887 flow [2024-06-27 22:15:57,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 257 transitions, 2775 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 22:15:57,890 INFO L231 Difference]: Finished difference. Result has 123 places, 228 transitions, 2279 flow [2024-06-27 22:15:57,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2279, PETRI_PLACES=123, PETRI_TRANSITIONS=228} [2024-06-27 22:15:57,890 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-06-27 22:15:57,891 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 228 transitions, 2279 flow [2024-06-27 22:15:57,891 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 22:15:57,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:15:57,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:15:57,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:15:57,891 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:15:57,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:15:57,892 INFO L85 PathProgramCache]: Analyzing trace with hash -825516309, now seen corresponding path program 5 times [2024-06-27 22:15:57,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:15:57,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152154692] [2024-06-27 22:15:57,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:15:57,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:15:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:15:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:15:59,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:15:59,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152154692] [2024-06-27 22:15:59,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152154692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:15:59,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:15:59,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:15:59,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844519946] [2024-06-27 22:15:59,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:15:59,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:15:59,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:15:59,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:15:59,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:15:59,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:15:59,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 228 transitions, 2279 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:15:59,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:15:59,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:15:59,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:00,518 INFO L124 PetriNetUnfolderBase]: 5068/8335 cut-off events. [2024-06-27 22:16:00,518 INFO L125 PetriNetUnfolderBase]: For 104585/104630 co-relation queries the response was YES. [2024-06-27 22:16:00,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42441 conditions, 8335 events. 5068/8335 cut-off events. For 104585/104630 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 54577 event pairs, 2000 based on Foata normal form. 3/7850 useless extension candidates. Maximal degree in co-relation 42389. Up to 6873 conditions per place. [2024-06-27 22:16:00,586 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 167 selfloop transitions, 79 changer transitions 0/269 dead transitions. [2024-06-27 22:16:00,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 269 transitions, 3028 flow [2024-06-27 22:16:00,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:00,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:16:00,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 22:16:00,587 INFO L175 Difference]: Start difference. First operand has 123 places, 228 transitions, 2279 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:16:00,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 269 transitions, 3028 flow [2024-06-27 22:16:00,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 269 transitions, 2952 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-06-27 22:16:00,691 INFO L231 Difference]: Finished difference. Result has 131 places, 242 transitions, 2577 flow [2024-06-27 22:16:00,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2577, PETRI_PLACES=131, PETRI_TRANSITIONS=242} [2024-06-27 22:16:00,691 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 78 predicate places. [2024-06-27 22:16:00,691 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 242 transitions, 2577 flow [2024-06-27 22:16:00,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:00,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:00,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:00,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:16:00,692 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:00,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:00,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1835412961, now seen corresponding path program 1 times [2024-06-27 22:16:00,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:00,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790915719] [2024-06-27 22:16:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:00,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:00,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:00,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790915719] [2024-06-27 22:16:00,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790915719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:00,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:00,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:16:00,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352148004] [2024-06-27 22:16:00,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:00,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:16:00,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:00,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:16:00,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:16:00,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2024-06-27 22:16:00,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 242 transitions, 2577 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:00,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:00,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2024-06-27 22:16:00,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:01,250 INFO L124 PetriNetUnfolderBase]: 2299/4463 cut-off events. [2024-06-27 22:16:01,250 INFO L125 PetriNetUnfolderBase]: For 48624/48888 co-relation queries the response was YES. [2024-06-27 22:16:01,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21318 conditions, 4463 events. 2299/4463 cut-off events. For 48624/48888 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 32964 event pairs, 638 based on Foata normal form. 40/4141 useless extension candidates. Maximal degree in co-relation 21263. Up to 2237 conditions per place. [2024-06-27 22:16:01,290 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 101 selfloop transitions, 23 changer transitions 0/250 dead transitions. [2024-06-27 22:16:01,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 250 transitions, 2836 flow [2024-06-27 22:16:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:16:01,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:16:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-06-27 22:16:01,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2024-06-27 22:16:01,296 INFO L175 Difference]: Start difference. First operand has 131 places, 242 transitions, 2577 flow. Second operand 3 states and 108 transitions. [2024-06-27 22:16:01,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 250 transitions, 2836 flow [2024-06-27 22:16:01,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 250 transitions, 2685 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-27 22:16:01,354 INFO L231 Difference]: Finished difference. Result has 129 places, 238 transitions, 2417 flow [2024-06-27 22:16:01,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2417, PETRI_PLACES=129, PETRI_TRANSITIONS=238} [2024-06-27 22:16:01,355 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 76 predicate places. [2024-06-27 22:16:01,355 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 238 transitions, 2417 flow [2024-06-27 22:16:01,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:01,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:01,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:01,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:16:01,355 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:01,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:01,356 INFO L85 PathProgramCache]: Analyzing trace with hash -820838192, now seen corresponding path program 3 times [2024-06-27 22:16:01,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:01,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144486704] [2024-06-27 22:16:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:01,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:02,324 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 22:16:02,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:02,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144486704] [2024-06-27 22:16:02,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144486704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:02,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:02,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:16:02,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687647539] [2024-06-27 22:16:02,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:02,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:16:02,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:02,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:16:02,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:16:02,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:02,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 238 transitions, 2417 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 22:16:02,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:02,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:02,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:03,381 INFO L124 PetriNetUnfolderBase]: 4788/7725 cut-off events. [2024-06-27 22:16:03,381 INFO L125 PetriNetUnfolderBase]: For 120109/120121 co-relation queries the response was YES. [2024-06-27 22:16:03,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41157 conditions, 7725 events. 4788/7725 cut-off events. For 120109/120121 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 48197 event pairs, 2202 based on Foata normal form. 15/7535 useless extension candidates. Maximal degree in co-relation 41102. Up to 6446 conditions per place. [2024-06-27 22:16:03,441 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 174 selfloop transitions, 99 changer transitions 1/283 dead transitions. [2024-06-27 22:16:03,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 283 transitions, 3483 flow [2024-06-27 22:16:03,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:16:03,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:16:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 22:16:03,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:16:03,443 INFO L175 Difference]: Start difference. First operand has 129 places, 238 transitions, 2417 flow. Second operand 7 states and 175 transitions. [2024-06-27 22:16:03,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 283 transitions, 3483 flow [2024-06-27 22:16:03,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 283 transitions, 3437 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:16:03,522 INFO L231 Difference]: Finished difference. Result has 135 places, 252 transitions, 2913 flow [2024-06-27 22:16:03,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2913, PETRI_PLACES=135, PETRI_TRANSITIONS=252} [2024-06-27 22:16:03,522 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 82 predicate places. [2024-06-27 22:16:03,522 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 252 transitions, 2913 flow [2024-06-27 22:16:03,522 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 22:16:03,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:03,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:03,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:16:03,523 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:03,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:03,523 INFO L85 PathProgramCache]: Analyzing trace with hash -647462012, now seen corresponding path program 4 times [2024-06-27 22:16:03,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:03,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134934962] [2024-06-27 22:16:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:03,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:04,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:04,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134934962] [2024-06-27 22:16:04,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134934962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:04,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:04,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:16:04,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295280598] [2024-06-27 22:16:04,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:04,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:16:04,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:04,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:16:04,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:16:04,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:04,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 252 transitions, 2913 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 22:16:04,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:04,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:04,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:05,665 INFO L124 PetriNetUnfolderBase]: 4244/6964 cut-off events. [2024-06-27 22:16:05,665 INFO L125 PetriNetUnfolderBase]: For 122235/122247 co-relation queries the response was YES. [2024-06-27 22:16:05,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39510 conditions, 6964 events. 4244/6964 cut-off events. For 122235/122247 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 43803 event pairs, 1888 based on Foata normal form. 15/6777 useless extension candidates. Maximal degree in co-relation 39452. Up to 5689 conditions per place. [2024-06-27 22:16:05,720 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 184 selfloop transitions, 88 changer transitions 0/281 dead transitions. [2024-06-27 22:16:05,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 281 transitions, 3673 flow [2024-06-27 22:16:05,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:16:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:16:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 22:16:05,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-27 22:16:05,726 INFO L175 Difference]: Start difference. First operand has 135 places, 252 transitions, 2913 flow. Second operand 7 states and 173 transitions. [2024-06-27 22:16:05,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 281 transitions, 3673 flow [2024-06-27 22:16:05,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 281 transitions, 3483 flow, removed 78 selfloop flow, removed 2 redundant places. [2024-06-27 22:16:05,878 INFO L231 Difference]: Finished difference. Result has 139 places, 252 transitions, 2910 flow [2024-06-27 22:16:05,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2910, PETRI_PLACES=139, PETRI_TRANSITIONS=252} [2024-06-27 22:16:05,879 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 86 predicate places. [2024-06-27 22:16:05,879 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 252 transitions, 2910 flow [2024-06-27 22:16:05,879 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 22:16:05,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:05,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:05,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:16:05,879 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:05,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:05,880 INFO L85 PathProgramCache]: Analyzing trace with hash -647462229, now seen corresponding path program 6 times [2024-06-27 22:16:05,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:05,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891708054] [2024-06-27 22:16:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:05,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:07,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:07,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891708054] [2024-06-27 22:16:07,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891708054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:07,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:07,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:16:07,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218546351] [2024-06-27 22:16:07,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:07,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:16:07,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:07,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:16:07,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:16:07,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:16:07,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 252 transitions, 2910 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:07,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:07,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:16:07,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:08,243 INFO L124 PetriNetUnfolderBase]: 4020/6739 cut-off events. [2024-06-27 22:16:08,243 INFO L125 PetriNetUnfolderBase]: For 106109/106148 co-relation queries the response was YES. [2024-06-27 22:16:08,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36924 conditions, 6739 events. 4020/6739 cut-off events. For 106109/106148 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 43137 event pairs, 1382 based on Foata normal form. 3/6516 useless extension candidates. Maximal degree in co-relation 36864. Up to 5307 conditions per place. [2024-06-27 22:16:08,294 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 149 selfloop transitions, 107 changer transitions 0/282 dead transitions. [2024-06-27 22:16:08,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 282 transitions, 3624 flow [2024-06-27 22:16:08,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:16:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:16:08,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 22:16:08,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-27 22:16:08,299 INFO L175 Difference]: Start difference. First operand has 139 places, 252 transitions, 2910 flow. Second operand 7 states and 173 transitions. [2024-06-27 22:16:08,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 282 transitions, 3624 flow [2024-06-27 22:16:08,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 282 transitions, 3321 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 22:16:08,390 INFO L231 Difference]: Finished difference. Result has 139 places, 256 transitions, 2938 flow [2024-06-27 22:16:08,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2607, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2938, PETRI_PLACES=139, PETRI_TRANSITIONS=256} [2024-06-27 22:16:08,390 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 86 predicate places. [2024-06-27 22:16:08,391 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 256 transitions, 2938 flow [2024-06-27 22:16:08,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:08,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:08,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:08,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:16:08,391 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:08,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:08,391 INFO L85 PathProgramCache]: Analyzing trace with hash -647185182, now seen corresponding path program 1 times [2024-06-27 22:16:08,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:08,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060785725] [2024-06-27 22:16:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:08,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:09,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060785725] [2024-06-27 22:16:09,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060785725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:09,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:09,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:16:09,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359335001] [2024-06-27 22:16:09,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:09,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:16:09,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:16:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:16:10,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:16:10,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 256 transitions, 2938 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:10,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:10,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:16:10,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:11,216 INFO L124 PetriNetUnfolderBase]: 3747/6309 cut-off events. [2024-06-27 22:16:11,217 INFO L125 PetriNetUnfolderBase]: For 105755/105755 co-relation queries the response was YES. [2024-06-27 22:16:11,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35063 conditions, 6309 events. 3747/6309 cut-off events. For 105755/105755 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 40185 event pairs, 1724 based on Foata normal form. 6/6134 useless extension candidates. Maximal degree in co-relation 35004. Up to 5212 conditions per place. [2024-06-27 22:16:11,269 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 257 selfloop transitions, 31 changer transitions 0/298 dead transitions. [2024-06-27 22:16:11,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 298 transitions, 3846 flow [2024-06-27 22:16:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:11,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 22:16:11,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-27 22:16:11,272 INFO L175 Difference]: Start difference. First operand has 139 places, 256 transitions, 2938 flow. Second operand 9 states and 213 transitions. [2024-06-27 22:16:11,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 298 transitions, 3846 flow [2024-06-27 22:16:11,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 298 transitions, 3545 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 22:16:11,387 INFO L231 Difference]: Finished difference. Result has 143 places, 259 transitions, 2773 flow [2024-06-27 22:16:11,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2637, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2773, PETRI_PLACES=143, PETRI_TRANSITIONS=259} [2024-06-27 22:16:11,388 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 90 predicate places. [2024-06-27 22:16:11,388 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 259 transitions, 2773 flow [2024-06-27 22:16:11,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:11,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:11,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:11,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:16:11,389 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:11,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:11,389 INFO L85 PathProgramCache]: Analyzing trace with hash -919501432, now seen corresponding path program 1 times [2024-06-27 22:16:11,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:11,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305373237] [2024-06-27 22:16:11,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:11,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:12,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:12,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305373237] [2024-06-27 22:16:12,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305373237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:12,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:12,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:16:12,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510397889] [2024-06-27 22:16:12,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:12,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:16:12,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:12,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:16:12,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:16:12,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:16:12,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 259 transitions, 2773 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:12,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:12,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:16:12,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:13,202 INFO L124 PetriNetUnfolderBase]: 3744/6309 cut-off events. [2024-06-27 22:16:13,202 INFO L125 PetriNetUnfolderBase]: For 108628/108628 co-relation queries the response was YES. [2024-06-27 22:16:13,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35406 conditions, 6309 events. 3744/6309 cut-off events. For 108628/108628 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 40249 event pairs, 1773 based on Foata normal form. 1/6129 useless extension candidates. Maximal degree in co-relation 35346. Up to 5341 conditions per place. [2024-06-27 22:16:13,252 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 249 selfloop transitions, 16 changer transitions 0/275 dead transitions. [2024-06-27 22:16:13,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 275 transitions, 3385 flow [2024-06-27 22:16:13,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:16:13,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:16:13,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 22:16:13,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2024-06-27 22:16:13,253 INFO L175 Difference]: Start difference. First operand has 143 places, 259 transitions, 2773 flow. Second operand 5 states and 119 transitions. [2024-06-27 22:16:13,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 275 transitions, 3385 flow [2024-06-27 22:16:13,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 275 transitions, 3289 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 22:16:13,343 INFO L231 Difference]: Finished difference. Result has 141 places, 262 transitions, 2763 flow [2024-06-27 22:16:13,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2677, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2763, PETRI_PLACES=141, PETRI_TRANSITIONS=262} [2024-06-27 22:16:13,343 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 88 predicate places. [2024-06-27 22:16:13,343 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 262 transitions, 2763 flow [2024-06-27 22:16:13,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:13,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:13,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:13,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:16:13,344 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:13,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:13,344 INFO L85 PathProgramCache]: Analyzing trace with hash -973182426, now seen corresponding path program 1 times [2024-06-27 22:16:13,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:13,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974917778] [2024-06-27 22:16:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:13,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:14,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974917778] [2024-06-27 22:16:14,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974917778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:14,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:14,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:14,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619915680] [2024-06-27 22:16:14,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:14,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:14,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:14,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:14,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:14,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:14,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 262 transitions, 2763 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 22:16:14,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:14,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:14,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:15,732 INFO L124 PetriNetUnfolderBase]: 4359/7180 cut-off events. [2024-06-27 22:16:15,732 INFO L125 PetriNetUnfolderBase]: For 130089/130095 co-relation queries the response was YES. [2024-06-27 22:16:15,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40876 conditions, 7180 events. 4359/7180 cut-off events. For 130089/130095 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 45475 event pairs, 1801 based on Foata normal form. 9/6970 useless extension candidates. Maximal degree in co-relation 40814. Up to 5925 conditions per place. [2024-06-27 22:16:15,791 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 230 selfloop transitions, 97 changer transitions 0/336 dead transitions. [2024-06-27 22:16:15,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 336 transitions, 4197 flow [2024-06-27 22:16:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:16:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:16:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-06-27 22:16:15,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085106382978724 [2024-06-27 22:16:15,792 INFO L175 Difference]: Start difference. First operand has 141 places, 262 transitions, 2763 flow. Second operand 10 states and 239 transitions. [2024-06-27 22:16:15,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 336 transitions, 4197 flow [2024-06-27 22:16:15,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 336 transitions, 4158 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 22:16:15,904 INFO L231 Difference]: Finished difference. Result has 151 places, 288 transitions, 3450 flow [2024-06-27 22:16:15,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2724, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3450, PETRI_PLACES=151, PETRI_TRANSITIONS=288} [2024-06-27 22:16:15,904 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 98 predicate places. [2024-06-27 22:16:15,904 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 288 transitions, 3450 flow [2024-06-27 22:16:15,904 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 22:16:15,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:15,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:15,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:16:15,905 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:15,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:15,905 INFO L85 PathProgramCache]: Analyzing trace with hash 337166428, now seen corresponding path program 2 times [2024-06-27 22:16:15,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:15,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374619059] [2024-06-27 22:16:15,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:15,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:17,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:17,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374619059] [2024-06-27 22:16:17,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374619059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:17,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:17,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:17,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577167229] [2024-06-27 22:16:17,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:17,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:17,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:17,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:17,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:17,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:17,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 288 transitions, 3450 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 22:16:17,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:17,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:17,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:18,458 INFO L124 PetriNetUnfolderBase]: 4509/7326 cut-off events. [2024-06-27 22:16:18,459 INFO L125 PetriNetUnfolderBase]: For 153236/153242 co-relation queries the response was YES. [2024-06-27 22:16:18,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45262 conditions, 7326 events. 4509/7326 cut-off events. For 153236/153242 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 45476 event pairs, 1585 based on Foata normal form. 9/7127 useless extension candidates. Maximal degree in co-relation 45196. Up to 6106 conditions per place. [2024-06-27 22:16:18,522 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 244 selfloop transitions, 107 changer transitions 0/360 dead transitions. [2024-06-27 22:16:18,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 360 transitions, 5124 flow [2024-06-27 22:16:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 22:16:18,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 22:16:18,523 INFO L175 Difference]: Start difference. First operand has 151 places, 288 transitions, 3450 flow. Second operand 9 states and 222 transitions. [2024-06-27 22:16:18,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 360 transitions, 5124 flow [2024-06-27 22:16:18,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 360 transitions, 4730 flow, removed 179 selfloop flow, removed 3 redundant places. [2024-06-27 22:16:18,725 INFO L231 Difference]: Finished difference. Result has 159 places, 317 transitions, 4004 flow [2024-06-27 22:16:18,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4004, PETRI_PLACES=159, PETRI_TRANSITIONS=317} [2024-06-27 22:16:18,726 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 106 predicate places. [2024-06-27 22:16:18,726 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 317 transitions, 4004 flow [2024-06-27 22:16:18,726 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 22:16:18,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:18,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:18,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:16:18,726 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:18,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash 340920838, now seen corresponding path program 3 times [2024-06-27 22:16:18,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:18,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425144576] [2024-06-27 22:16:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:18,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:20,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:20,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425144576] [2024-06-27 22:16:20,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425144576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:20,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:20,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:20,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144499864] [2024-06-27 22:16:20,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:20,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:20,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:20,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:20,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:20,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:20,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 317 transitions, 4004 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 22:16:20,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:20,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:20,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:21,639 INFO L124 PetriNetUnfolderBase]: 4609/7507 cut-off events. [2024-06-27 22:16:21,639 INFO L125 PetriNetUnfolderBase]: For 171999/171999 co-relation queries the response was YES. [2024-06-27 22:16:21,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48198 conditions, 7507 events. 4609/7507 cut-off events. For 171999/171999 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 46881 event pairs, 1574 based on Foata normal form. 3/7290 useless extension candidates. Maximal degree in co-relation 48128. Up to 5940 conditions per place. [2024-06-27 22:16:21,716 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 205 selfloop transitions, 162 changer transitions 0/376 dead transitions. [2024-06-27 22:16:21,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 376 transitions, 5508 flow [2024-06-27 22:16:21,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-27 22:16:21,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-27 22:16:21,717 INFO L175 Difference]: Start difference. First operand has 159 places, 317 transitions, 4004 flow. Second operand 9 states and 224 transitions. [2024-06-27 22:16:21,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 376 transitions, 5508 flow [2024-06-27 22:16:21,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 376 transitions, 5375 flow, removed 61 selfloop flow, removed 2 redundant places. [2024-06-27 22:16:21,996 INFO L231 Difference]: Finished difference. Result has 167 places, 332 transitions, 4660 flow [2024-06-27 22:16:21,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3871, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4660, PETRI_PLACES=167, PETRI_TRANSITIONS=332} [2024-06-27 22:16:21,997 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 114 predicate places. [2024-06-27 22:16:21,997 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 332 transitions, 4660 flow [2024-06-27 22:16:21,997 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 22:16:21,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:21,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:21,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:16:21,997 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:21,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:21,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1684463978, now seen corresponding path program 1 times [2024-06-27 22:16:21,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:21,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285196928] [2024-06-27 22:16:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:21,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:23,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:23,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285196928] [2024-06-27 22:16:23,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285196928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:23,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:23,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:16:23,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479618110] [2024-06-27 22:16:23,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:23,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:16:23,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:16:23,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:16:23,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:23,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 332 transitions, 4660 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:23,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:23,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:23,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:25,006 INFO L124 PetriNetUnfolderBase]: 4673/7591 cut-off events. [2024-06-27 22:16:25,007 INFO L125 PetriNetUnfolderBase]: For 194567/194567 co-relation queries the response was YES. [2024-06-27 22:16:25,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51217 conditions, 7591 events. 4673/7591 cut-off events. For 194567/194567 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 47326 event pairs, 1481 based on Foata normal form. 6/7377 useless extension candidates. Maximal degree in co-relation 51144. Up to 6081 conditions per place. [2024-06-27 22:16:25,080 INFO L140 encePairwiseOnDemand]: 30/47 looper letters, 220 selfloop transitions, 151 changer transitions 0/380 dead transitions. [2024-06-27 22:16:25,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 380 transitions, 5856 flow [2024-06-27 22:16:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:25,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:25,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:16:25,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 22:16:25,081 INFO L175 Difference]: Start difference. First operand has 167 places, 332 transitions, 4660 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:16:25,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 380 transitions, 5856 flow [2024-06-27 22:16:25,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 380 transitions, 5641 flow, removed 78 selfloop flow, removed 3 redundant places. [2024-06-27 22:16:25,361 INFO L231 Difference]: Finished difference. Result has 173 places, 338 transitions, 4916 flow [2024-06-27 22:16:25,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4451, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4916, PETRI_PLACES=173, PETRI_TRANSITIONS=338} [2024-06-27 22:16:25,362 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 120 predicate places. [2024-06-27 22:16:25,362 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 338 transitions, 4916 flow [2024-06-27 22:16:25,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:25,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:25,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:25,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:16:25,362 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:25,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:25,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1684470736, now seen corresponding path program 4 times [2024-06-27 22:16:25,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:25,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85929149] [2024-06-27 22:16:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:25,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:26,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:26,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:26,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85929149] [2024-06-27 22:16:26,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85929149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:26,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:26,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:26,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983819201] [2024-06-27 22:16:26,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:26,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:26,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:26,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:26,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:26,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:26,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 338 transitions, 4916 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 22:16:26,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:26,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:26,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:28,334 INFO L124 PetriNetUnfolderBase]: 4667/7587 cut-off events. [2024-06-27 22:16:28,334 INFO L125 PetriNetUnfolderBase]: For 192980/192980 co-relation queries the response was YES. [2024-06-27 22:16:28,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51685 conditions, 7587 events. 4667/7587 cut-off events. For 192980/192980 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 47298 event pairs, 1476 based on Foata normal form. 3/7370 useless extension candidates. Maximal degree in co-relation 51610. Up to 6024 conditions per place. [2024-06-27 22:16:28,410 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 225 selfloop transitions, 147 changer transitions 0/381 dead transitions. [2024-06-27 22:16:28,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 381 transitions, 6032 flow [2024-06-27 22:16:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:28,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-27 22:16:28,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-27 22:16:28,412 INFO L175 Difference]: Start difference. First operand has 173 places, 338 transitions, 4916 flow. Second operand 9 states and 223 transitions. [2024-06-27 22:16:28,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 381 transitions, 6032 flow [2024-06-27 22:16:28,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 381 transitions, 5549 flow, removed 96 selfloop flow, removed 7 redundant places. [2024-06-27 22:16:28,760 INFO L231 Difference]: Finished difference. Result has 175 places, 338 transitions, 4739 flow [2024-06-27 22:16:28,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4433, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4739, PETRI_PLACES=175, PETRI_TRANSITIONS=338} [2024-06-27 22:16:28,761 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 122 predicate places. [2024-06-27 22:16:28,761 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 338 transitions, 4739 flow [2024-06-27 22:16:28,761 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 22:16:28,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:28,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:28,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:16:28,761 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:28,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:28,762 INFO L85 PathProgramCache]: Analyzing trace with hash 355800978, now seen corresponding path program 5 times [2024-06-27 22:16:28,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:28,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843854705] [2024-06-27 22:16:28,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:28,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:30,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:30,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843854705] [2024-06-27 22:16:30,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843854705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:30,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:30,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:30,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558766106] [2024-06-27 22:16:30,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:30,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:30,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:30,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:30,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:30,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:30,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 338 transitions, 4739 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 22:16:30,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:30,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:30,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:31,574 INFO L124 PetriNetUnfolderBase]: 4905/7871 cut-off events. [2024-06-27 22:16:31,575 INFO L125 PetriNetUnfolderBase]: For 206069/206069 co-relation queries the response was YES. [2024-06-27 22:16:31,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54472 conditions, 7871 events. 4905/7871 cut-off events. For 206069/206069 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 48491 event pairs, 1327 based on Foata normal form. 3/7663 useless extension candidates. Maximal degree in co-relation 54396. Up to 6594 conditions per place. [2024-06-27 22:16:31,641 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 286 selfloop transitions, 133 changer transitions 0/428 dead transitions. [2024-06-27 22:16:31,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 428 transitions, 6992 flow [2024-06-27 22:16:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:31,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 22:16:31,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-27 22:16:31,643 INFO L175 Difference]: Start difference. First operand has 175 places, 338 transitions, 4739 flow. Second operand 8 states and 199 transitions. [2024-06-27 22:16:31,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 428 transitions, 6992 flow [2024-06-27 22:16:31,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 428 transitions, 6413 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 22:16:31,928 INFO L231 Difference]: Finished difference. Result has 176 places, 390 transitions, 5614 flow [2024-06-27 22:16:31,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4276, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5614, PETRI_PLACES=176, PETRI_TRANSITIONS=390} [2024-06-27 22:16:31,928 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 123 predicate places. [2024-06-27 22:16:31,929 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 390 transitions, 5614 flow [2024-06-27 22:16:31,929 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 22:16:31,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:31,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:31,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:16:31,929 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:31,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:31,930 INFO L85 PathProgramCache]: Analyzing trace with hash 178798966, now seen corresponding path program 6 times [2024-06-27 22:16:31,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:31,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134610825] [2024-06-27 22:16:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:31,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:33,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:33,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134610825] [2024-06-27 22:16:33,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134610825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:33,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:33,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:33,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213660202] [2024-06-27 22:16:33,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:33,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:33,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:33,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:33,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:33,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:33,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 390 transitions, 5614 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 22:16:33,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:33,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:33,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:35,029 INFO L124 PetriNetUnfolderBase]: 5076/8119 cut-off events. [2024-06-27 22:16:35,030 INFO L125 PetriNetUnfolderBase]: For 232111/232111 co-relation queries the response was YES. [2024-06-27 22:16:35,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57519 conditions, 8119 events. 5076/8119 cut-off events. For 232111/232111 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 49976 event pairs, 1332 based on Foata normal form. 3/7910 useless extension candidates. Maximal degree in co-relation 57442. Up to 6566 conditions per place. [2024-06-27 22:16:35,110 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 279 selfloop transitions, 167 changer transitions 0/455 dead transitions. [2024-06-27 22:16:35,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 455 transitions, 7413 flow [2024-06-27 22:16:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:35,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 22:16:35,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-27 22:16:35,111 INFO L175 Difference]: Start difference. First operand has 176 places, 390 transitions, 5614 flow. Second operand 8 states and 202 transitions. [2024-06-27 22:16:35,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 455 transitions, 7413 flow [2024-06-27 22:16:35,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 455 transitions, 7260 flow, removed 65 selfloop flow, removed 2 redundant places. [2024-06-27 22:16:35,560 INFO L231 Difference]: Finished difference. Result has 183 places, 414 transitions, 6289 flow [2024-06-27 22:16:35,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5461, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6289, PETRI_PLACES=183, PETRI_TRANSITIONS=414} [2024-06-27 22:16:35,561 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 130 predicate places. [2024-06-27 22:16:35,561 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 414 transitions, 6289 flow [2024-06-27 22:16:35,561 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 22:16:35,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:35,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:35,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:16:35,562 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:35,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:35,562 INFO L85 PathProgramCache]: Analyzing trace with hash 359555636, now seen corresponding path program 2 times [2024-06-27 22:16:35,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:35,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051754394] [2024-06-27 22:16:35,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:35,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:36,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:36,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051754394] [2024-06-27 22:16:36,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051754394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:36,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:36,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:36,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974608080] [2024-06-27 22:16:36,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:36,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:36,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:36,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:36,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:36,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:36,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 414 transitions, 6289 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 22:16:36,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:36,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:36,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:38,493 INFO L124 PetriNetUnfolderBase]: 5176/8288 cut-off events. [2024-06-27 22:16:38,493 INFO L125 PetriNetUnfolderBase]: For 260769/260773 co-relation queries the response was YES. [2024-06-27 22:16:38,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60966 conditions, 8288 events. 5176/8288 cut-off events. For 260769/260773 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 51415 event pairs, 1777 based on Foata normal form. 7/8083 useless extension candidates. Maximal degree in co-relation 60886. Up to 7064 conditions per place. [2024-06-27 22:16:38,569 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 388 selfloop transitions, 82 changer transitions 0/479 dead transitions. [2024-06-27 22:16:38,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 479 transitions, 8073 flow [2024-06-27 22:16:38,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:38,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:38,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 22:16:38,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-27 22:16:38,571 INFO L175 Difference]: Start difference. First operand has 183 places, 414 transitions, 6289 flow. Second operand 9 states and 212 transitions. [2024-06-27 22:16:38,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 479 transitions, 8073 flow [2024-06-27 22:16:38,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 479 transitions, 7661 flow, removed 95 selfloop flow, removed 4 redundant places. [2024-06-27 22:16:38,929 INFO L231 Difference]: Finished difference. Result has 190 places, 436 transitions, 6554 flow [2024-06-27 22:16:38,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5893, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6554, PETRI_PLACES=190, PETRI_TRANSITIONS=436} [2024-06-27 22:16:38,930 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 137 predicate places. [2024-06-27 22:16:38,930 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 436 transitions, 6554 flow [2024-06-27 22:16:38,930 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 22:16:38,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:38,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:38,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:16:38,930 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:38,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:38,930 INFO L85 PathProgramCache]: Analyzing trace with hash 178805476, now seen corresponding path program 7 times [2024-06-27 22:16:38,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:38,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253231786] [2024-06-27 22:16:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:38,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:40,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:40,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253231786] [2024-06-27 22:16:40,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253231786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:40,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:40,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:40,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42640153] [2024-06-27 22:16:40,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:40,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:40,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:40,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:40,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:40,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:40,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 436 transitions, 6554 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 22:16:40,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:40,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:40,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:41,887 INFO L124 PetriNetUnfolderBase]: 5185/8286 cut-off events. [2024-06-27 22:16:41,887 INFO L125 PetriNetUnfolderBase]: For 269642/269642 co-relation queries the response was YES. [2024-06-27 22:16:41,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61642 conditions, 8286 events. 5185/8286 cut-off events. For 269642/269642 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 51190 event pairs, 1337 based on Foata normal form. 3/8075 useless extension candidates. Maximal degree in co-relation 61559. Up to 6716 conditions per place. [2024-06-27 22:16:41,980 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 283 selfloop transitions, 187 changer transitions 0/479 dead transitions. [2024-06-27 22:16:41,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 479 transitions, 7971 flow [2024-06-27 22:16:41,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:41,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:41,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 22:16:41,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-27 22:16:41,982 INFO L175 Difference]: Start difference. First operand has 190 places, 436 transitions, 6554 flow. Second operand 9 states and 212 transitions. [2024-06-27 22:16:41,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 479 transitions, 7971 flow [2024-06-27 22:16:42,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 479 transitions, 7824 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-27 22:16:42,480 INFO L231 Difference]: Finished difference. Result has 196 places, 442 transitions, 6939 flow [2024-06-27 22:16:42,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6407, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6939, PETRI_PLACES=196, PETRI_TRANSITIONS=442} [2024-06-27 22:16:42,480 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 143 predicate places. [2024-06-27 22:16:42,480 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 442 transitions, 6939 flow [2024-06-27 22:16:42,481 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 22:16:42,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:42,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:42,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:16:42,481 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:42,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:42,481 INFO L85 PathProgramCache]: Analyzing trace with hash -436143340, now seen corresponding path program 8 times [2024-06-27 22:16:42,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:42,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815360064] [2024-06-27 22:16:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:42,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:43,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:43,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815360064] [2024-06-27 22:16:43,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815360064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:43,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:43,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:43,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929244563] [2024-06-27 22:16:43,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:43,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:43,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:43,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:43,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:43,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:43,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 442 transitions, 6939 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 22:16:43,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:43,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:43,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:45,672 INFO L124 PetriNetUnfolderBase]: 5217/8339 cut-off events. [2024-06-27 22:16:45,672 INFO L125 PetriNetUnfolderBase]: For 286596/286596 co-relation queries the response was YES. [2024-06-27 22:16:45,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63199 conditions, 8339 events. 5217/8339 cut-off events. For 286596/286596 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 51633 event pairs, 1344 based on Foata normal form. 3/8127 useless extension candidates. Maximal degree in co-relation 63115. Up to 6227 conditions per place. [2024-06-27 22:16:45,749 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 236 selfloop transitions, 245 changer transitions 0/490 dead transitions. [2024-06-27 22:16:45,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 490 transitions, 8707 flow [2024-06-27 22:16:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:45,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 22:16:45,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-27 22:16:45,751 INFO L175 Difference]: Start difference. First operand has 196 places, 442 transitions, 6939 flow. Second operand 9 states and 214 transitions. [2024-06-27 22:16:45,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 490 transitions, 8707 flow [2024-06-27 22:16:46,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 490 transitions, 8367 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-27 22:16:46,181 INFO L231 Difference]: Finished difference. Result has 201 places, 452 transitions, 7417 flow [2024-06-27 22:16:46,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6599, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7417, PETRI_PLACES=201, PETRI_TRANSITIONS=452} [2024-06-27 22:16:46,181 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 148 predicate places. [2024-06-27 22:16:46,181 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 452 transitions, 7417 flow [2024-06-27 22:16:46,182 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 22:16:46,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:46,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:46,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:16:46,182 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:46,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:46,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1403514660, now seen corresponding path program 9 times [2024-06-27 22:16:46,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:46,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401391809] [2024-06-27 22:16:46,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:46,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:47,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:47,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401391809] [2024-06-27 22:16:47,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401391809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:47,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:47,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276617283] [2024-06-27 22:16:47,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:47,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:47,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:47,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:47,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 452 transitions, 7417 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 22:16:47,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:47,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:47,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:49,213 INFO L124 PetriNetUnfolderBase]: 5249/8394 cut-off events. [2024-06-27 22:16:49,213 INFO L125 PetriNetUnfolderBase]: For 313869/313869 co-relation queries the response was YES. [2024-06-27 22:16:49,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65668 conditions, 8394 events. 5249/8394 cut-off events. For 313869/313869 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 52064 event pairs, 1344 based on Foata normal form. 3/8183 useless extension candidates. Maximal degree in co-relation 65582. Up to 6258 conditions per place. [2024-06-27 22:16:49,325 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 235 selfloop transitions, 250 changer transitions 0/494 dead transitions. [2024-06-27 22:16:49,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 494 transitions, 9021 flow [2024-06-27 22:16:49,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:16:49,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:16:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-27 22:16:49,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-27 22:16:49,326 INFO L175 Difference]: Start difference. First operand has 201 places, 452 transitions, 7417 flow. Second operand 8 states and 202 transitions. [2024-06-27 22:16:49,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 494 transitions, 9021 flow [2024-06-27 22:16:49,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 494 transitions, 8518 flow, removed 121 selfloop flow, removed 5 redundant places. [2024-06-27 22:16:49,987 INFO L231 Difference]: Finished difference. Result has 204 places, 457 transitions, 7600 flow [2024-06-27 22:16:49,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6952, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7600, PETRI_PLACES=204, PETRI_TRANSITIONS=457} [2024-06-27 22:16:49,988 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 151 predicate places. [2024-06-27 22:16:49,988 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 457 transitions, 7600 flow [2024-06-27 22:16:49,988 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 22:16:49,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:49,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:49,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:16:49,988 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:49,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:49,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1403514908, now seen corresponding path program 3 times [2024-06-27 22:16:49,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:49,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075850766] [2024-06-27 22:16:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:49,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:51,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:51,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:51,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075850766] [2024-06-27 22:16:51,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075850766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:51,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:51,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:16:51,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111447872] [2024-06-27 22:16:51,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:51,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:16:51,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:51,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:16:51,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:16:51,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:51,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 457 transitions, 7600 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:51,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:51,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:51,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:53,228 INFO L124 PetriNetUnfolderBase]: 5291/8460 cut-off events. [2024-06-27 22:16:53,228 INFO L125 PetriNetUnfolderBase]: For 324511/324511 co-relation queries the response was YES. [2024-06-27 22:16:53,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67139 conditions, 8460 events. 5291/8460 cut-off events. For 324511/324511 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 52605 event pairs, 1344 based on Foata normal form. 3/8247 useless extension candidates. Maximal degree in co-relation 67051. Up to 6644 conditions per place. [2024-06-27 22:16:53,322 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 283 selfloop transitions, 206 changer transitions 0/498 dead transitions. [2024-06-27 22:16:53,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 498 transitions, 9074 flow [2024-06-27 22:16:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:53,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 22:16:53,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-27 22:16:53,323 INFO L175 Difference]: Start difference. First operand has 204 places, 457 transitions, 7600 flow. Second operand 9 states and 212 transitions. [2024-06-27 22:16:53,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 498 transitions, 9074 flow [2024-06-27 22:16:53,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 498 transitions, 8489 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-27 22:16:53,855 INFO L231 Difference]: Finished difference. Result has 208 places, 461 transitions, 7560 flow [2024-06-27 22:16:53,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7015, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7560, PETRI_PLACES=208, PETRI_TRANSITIONS=461} [2024-06-27 22:16:53,856 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 155 predicate places. [2024-06-27 22:16:53,856 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 461 transitions, 7560 flow [2024-06-27 22:16:53,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:53,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:53,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:53,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:16:53,856 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:53,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:53,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1412085788, now seen corresponding path program 4 times [2024-06-27 22:16:53,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:53,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125119559] [2024-06-27 22:16:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:53,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:55,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:55,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125119559] [2024-06-27 22:16:55,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125119559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:55,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:55,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:16:55,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565507544] [2024-06-27 22:16:55,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:55,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:16:55,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:55,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:16:55,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:16:55,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:55,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 461 transitions, 7560 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:55,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:55,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:55,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:16:57,255 INFO L124 PetriNetUnfolderBase]: 5416/8647 cut-off events. [2024-06-27 22:16:57,256 INFO L125 PetriNetUnfolderBase]: For 348281/348281 co-relation queries the response was YES. [2024-06-27 22:16:57,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69806 conditions, 8647 events. 5416/8647 cut-off events. For 348281/348281 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 53789 event pairs, 1342 based on Foata normal form. 3/8430 useless extension candidates. Maximal degree in co-relation 69717. Up to 6570 conditions per place. [2024-06-27 22:16:57,365 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 242 selfloop transitions, 263 changer transitions 0/514 dead transitions. [2024-06-27 22:16:57,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 514 transitions, 9404 flow [2024-06-27 22:16:57,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:16:57,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:16:57,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 22:16:57,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-27 22:16:57,366 INFO L175 Difference]: Start difference. First operand has 208 places, 461 transitions, 7560 flow. Second operand 9 states and 217 transitions. [2024-06-27 22:16:57,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 514 transitions, 9404 flow [2024-06-27 22:16:58,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 514 transitions, 8937 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 22:16:58,020 INFO L231 Difference]: Finished difference. Result has 211 places, 474 transitions, 8025 flow [2024-06-27 22:16:58,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7093, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8025, PETRI_PLACES=211, PETRI_TRANSITIONS=474} [2024-06-27 22:16:58,021 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 158 predicate places. [2024-06-27 22:16:58,021 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 474 transitions, 8025 flow [2024-06-27 22:16:58,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:16:58,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:16:58,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:16:58,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:16:58,021 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:16:58,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:16:58,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1411788870, now seen corresponding path program 10 times [2024-06-27 22:16:58,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:16:58,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294933013] [2024-06-27 22:16:58,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:16:58,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:16:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:16:59,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:16:59,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:16:59,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294933013] [2024-06-27 22:16:59,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294933013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:16:59,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:16:59,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:16:59,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625877522] [2024-06-27 22:16:59,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:16:59,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:16:59,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:16:59,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:16:59,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:16:59,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:16:59,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 474 transitions, 8025 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 22:16:59,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:16:59,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:16:59,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:01,297 INFO L124 PetriNetUnfolderBase]: 5425/8665 cut-off events. [2024-06-27 22:17:01,298 INFO L125 PetriNetUnfolderBase]: For 360864/360864 co-relation queries the response was YES. [2024-06-27 22:17:01,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71790 conditions, 8665 events. 5425/8665 cut-off events. For 360864/360864 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 54011 event pairs, 1352 based on Foata normal form. 3/8446 useless extension candidates. Maximal degree in co-relation 71699. Up to 6500 conditions per place. [2024-06-27 22:17:01,394 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 205 selfloop transitions, 299 changer transitions 0/513 dead transitions. [2024-06-27 22:17:01,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 513 transitions, 9459 flow [2024-06-27 22:17:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 22:17:01,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-06-27 22:17:01,395 INFO L175 Difference]: Start difference. First operand has 211 places, 474 transitions, 8025 flow. Second operand 9 states and 211 transitions. [2024-06-27 22:17:01,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 513 transitions, 9459 flow [2024-06-27 22:17:02,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 513 transitions, 9093 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 22:17:02,014 INFO L231 Difference]: Finished difference. Result has 215 places, 479 transitions, 8415 flow [2024-06-27 22:17:02,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7659, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8415, PETRI_PLACES=215, PETRI_TRANSITIONS=479} [2024-06-27 22:17:02,014 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 162 predicate places. [2024-06-27 22:17:02,014 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 479 transitions, 8415 flow [2024-06-27 22:17:02,015 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 22:17:02,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:02,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:02,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:17:02,015 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:02,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:02,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1411789118, now seen corresponding path program 5 times [2024-06-27 22:17:02,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:02,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502677072] [2024-06-27 22:17:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:02,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:03,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:03,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:03,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502677072] [2024-06-27 22:17:03,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502677072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:03,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:03,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:17:03,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201367314] [2024-06-27 22:17:03,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:03,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:17:03,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:03,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:17:03,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:17:03,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:17:03,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 479 transitions, 8415 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:03,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:03,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:17:03,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:05,354 INFO L124 PetriNetUnfolderBase]: 5429/8679 cut-off events. [2024-06-27 22:17:05,354 INFO L125 PetriNetUnfolderBase]: For 369439/369439 co-relation queries the response was YES. [2024-06-27 22:17:05,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73187 conditions, 8679 events. 5429/8679 cut-off events. For 369439/369439 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 54113 event pairs, 1352 based on Foata normal form. 3/8458 useless extension candidates. Maximal degree in co-relation 73094. Up to 6834 conditions per place. [2024-06-27 22:17:05,452 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 272 selfloop transitions, 238 changer transitions 0/519 dead transitions. [2024-06-27 22:17:05,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 519 transitions, 9893 flow [2024-06-27 22:17:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 22:17:05,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-27 22:17:05,454 INFO L175 Difference]: Start difference. First operand has 215 places, 479 transitions, 8415 flow. Second operand 9 states and 212 transitions. [2024-06-27 22:17:05,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 519 transitions, 9893 flow [2024-06-27 22:17:06,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 519 transitions, 9343 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-27 22:17:06,337 INFO L231 Difference]: Finished difference. Result has 218 places, 483 transitions, 8492 flow [2024-06-27 22:17:06,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7865, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8492, PETRI_PLACES=218, PETRI_TRANSITIONS=483} [2024-06-27 22:17:06,338 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 165 predicate places. [2024-06-27 22:17:06,338 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 483 transitions, 8492 flow [2024-06-27 22:17:06,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:06,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:06,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:06,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:17:06,338 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:06,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:06,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1560228715, now seen corresponding path program 1 times [2024-06-27 22:17:06,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:06,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590157928] [2024-06-27 22:17:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:06,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:07,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:07,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:07,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590157928] [2024-06-27 22:17:07,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590157928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:07,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:07,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:17:07,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753971855] [2024-06-27 22:17:07,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:07,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:17:07,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:07,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:17:07,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:17:07,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:17:07,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 483 transitions, 8492 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 22:17:07,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:07,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:17:07,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:09,134 INFO L124 PetriNetUnfolderBase]: 4900/7997 cut-off events. [2024-06-27 22:17:09,134 INFO L125 PetriNetUnfolderBase]: For 336779/336779 co-relation queries the response was YES. [2024-06-27 22:17:09,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67277 conditions, 7997 events. 4900/7997 cut-off events. For 336779/336779 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 50691 event pairs, 1762 based on Foata normal form. 2/7805 useless extension candidates. Maximal degree in co-relation 67183. Up to 6892 conditions per place. [2024-06-27 22:17:09,230 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 476 selfloop transitions, 19 changer transitions 0/505 dead transitions. [2024-06-27 22:17:09,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 505 transitions, 9622 flow [2024-06-27 22:17:09,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:17:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:17:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-06-27 22:17:09,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:17:09,231 INFO L175 Difference]: Start difference. First operand has 218 places, 483 transitions, 8492 flow. Second operand 6 states and 141 transitions. [2024-06-27 22:17:09,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 505 transitions, 9622 flow [2024-06-27 22:17:09,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 505 transitions, 9071 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 22:17:09,966 INFO L231 Difference]: Finished difference. Result has 217 places, 486 transitions, 8028 flow [2024-06-27 22:17:09,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7941, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8028, PETRI_PLACES=217, PETRI_TRANSITIONS=486} [2024-06-27 22:17:09,966 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 164 predicate places. [2024-06-27 22:17:09,966 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 486 transitions, 8028 flow [2024-06-27 22:17:09,967 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 22:17:09,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:09,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:09,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:17:09,967 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:09,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1831040272, now seen corresponding path program 1 times [2024-06-27 22:17:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:09,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163595405] [2024-06-27 22:17:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:09,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:10,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:10,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:10,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163595405] [2024-06-27 22:17:10,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163595405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:10,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:10,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:17:10,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85172066] [2024-06-27 22:17:10,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:10,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:17:10,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:10,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:17:10,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:17:11,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:17:11,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 486 transitions, 8028 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:17:11,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:11,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:17:11,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:12,762 INFO L124 PetriNetUnfolderBase]: 5357/8561 cut-off events. [2024-06-27 22:17:12,762 INFO L125 PetriNetUnfolderBase]: For 401831/402117 co-relation queries the response was YES. [2024-06-27 22:17:12,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71937 conditions, 8561 events. 5357/8561 cut-off events. For 401831/402117 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 54011 event pairs, 1504 based on Foata normal form. 10/8318 useless extension candidates. Maximal degree in co-relation 71841. Up to 6975 conditions per place. [2024-06-27 22:17:12,874 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 401 selfloop transitions, 63 changer transitions 0/539 dead transitions. [2024-06-27 22:17:12,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 539 transitions, 9330 flow [2024-06-27 22:17:12,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-27 22:17:12,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-27 22:17:12,875 INFO L175 Difference]: Start difference. First operand has 217 places, 486 transitions, 8028 flow. Second operand 9 states and 221 transitions. [2024-06-27 22:17:12,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 539 transitions, 9330 flow [2024-06-27 22:17:13,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 539 transitions, 9277 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 22:17:13,586 INFO L231 Difference]: Finished difference. Result has 224 places, 494 transitions, 8361 flow [2024-06-27 22:17:13,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7975, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8361, PETRI_PLACES=224, PETRI_TRANSITIONS=494} [2024-06-27 22:17:13,587 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 171 predicate places. [2024-06-27 22:17:13,587 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 494 transitions, 8361 flow [2024-06-27 22:17:13,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:17:13,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:13,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:13,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:17:13,587 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:13,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:13,588 INFO L85 PathProgramCache]: Analyzing trace with hash -103889286, now seen corresponding path program 2 times [2024-06-27 22:17:13,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:13,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952300800] [2024-06-27 22:17:13,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:13,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:14,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:14,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952300800] [2024-06-27 22:17:14,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952300800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:14,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:14,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:17:14,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450767617] [2024-06-27 22:17:14,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:14,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:17:14,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:14,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:17:14,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:17:14,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:17:14,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 494 transitions, 8361 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:17:14,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:14,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:17:14,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:16,688 INFO L124 PetriNetUnfolderBase]: 5373/8722 cut-off events. [2024-06-27 22:17:16,688 INFO L125 PetriNetUnfolderBase]: For 414490/414621 co-relation queries the response was YES. [2024-06-27 22:17:16,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73983 conditions, 8722 events. 5373/8722 cut-off events. For 414490/414621 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 55936 event pairs, 1523 based on Foata normal form. 10/8480 useless extension candidates. Maximal degree in co-relation 73884. Up to 6975 conditions per place. [2024-06-27 22:17:16,795 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 387 selfloop transitions, 95 changer transitions 0/557 dead transitions. [2024-06-27 22:17:16,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 557 transitions, 9893 flow [2024-06-27 22:17:16,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:16,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 22:17:16,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 22:17:16,797 INFO L175 Difference]: Start difference. First operand has 224 places, 494 transitions, 8361 flow. Second operand 9 states and 225 transitions. [2024-06-27 22:17:16,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 557 transitions, 9893 flow [2024-06-27 22:17:17,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 557 transitions, 9677 flow, removed 86 selfloop flow, removed 4 redundant places. [2024-06-27 22:17:17,509 INFO L231 Difference]: Finished difference. Result has 230 places, 509 transitions, 8782 flow [2024-06-27 22:17:17,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8145, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8782, PETRI_PLACES=230, PETRI_TRANSITIONS=509} [2024-06-27 22:17:17,510 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-06-27 22:17:17,510 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 509 transitions, 8782 flow [2024-06-27 22:17:17,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:17:17,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:17,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:17,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:17:17,510 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:17,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:17,511 INFO L85 PathProgramCache]: Analyzing trace with hash -820785100, now seen corresponding path program 3 times [2024-06-27 22:17:17,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:17,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38802985] [2024-06-27 22:17:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:17,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:18,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:18,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38802985] [2024-06-27 22:17:18,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38802985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:18,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:18,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:17:18,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109360451] [2024-06-27 22:17:18,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:18,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:17:18,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:18,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:17:18,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:17:18,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-27 22:17:18,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 509 transitions, 8782 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:18,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:18,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-27 22:17:18,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:20,038 INFO L124 PetriNetUnfolderBase]: 4779/7917 cut-off events. [2024-06-27 22:17:20,038 INFO L125 PetriNetUnfolderBase]: For 437849/438298 co-relation queries the response was YES. [2024-06-27 22:17:20,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68329 conditions, 7917 events. 4779/7917 cut-off events. For 437849/438298 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 52391 event pairs, 944 based on Foata normal form. 72/7730 useless extension candidates. Maximal degree in co-relation 68227. Up to 5411 conditions per place. [2024-06-27 22:17:20,149 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 323 selfloop transitions, 83 changer transitions 0/559 dead transitions. [2024-06-27 22:17:20,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 559 transitions, 10124 flow [2024-06-27 22:17:20,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:17:20,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:17:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-27 22:17:20,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718085106382979 [2024-06-27 22:17:20,150 INFO L175 Difference]: Start difference. First operand has 230 places, 509 transitions, 8782 flow. Second operand 8 states and 215 transitions. [2024-06-27 22:17:20,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 559 transitions, 10124 flow [2024-06-27 22:17:21,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 559 transitions, 9707 flow, removed 171 selfloop flow, removed 4 redundant places. [2024-06-27 22:17:21,119 INFO L231 Difference]: Finished difference. Result has 236 places, 521 transitions, 8992 flow [2024-06-27 22:17:21,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8469, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8992, PETRI_PLACES=236, PETRI_TRANSITIONS=521} [2024-06-27 22:17:21,121 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 183 predicate places. [2024-06-27 22:17:21,121 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 521 transitions, 8992 flow [2024-06-27 22:17:21,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:21,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:21,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:21,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:17:21,122 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:21,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash -798062036, now seen corresponding path program 4 times [2024-06-27 22:17:21,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:21,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108673547] [2024-06-27 22:17:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:22,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:22,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108673547] [2024-06-27 22:17:22,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108673547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:22,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:22,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:17:22,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582994167] [2024-06-27 22:17:22,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:22,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:17:22,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:17:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:17:22,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:17:22,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 521 transitions, 8992 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:17:22,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:22,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:17:22,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:24,567 INFO L124 PetriNetUnfolderBase]: 5556/8992 cut-off events. [2024-06-27 22:17:24,567 INFO L125 PetriNetUnfolderBase]: For 474978/475021 co-relation queries the response was YES. [2024-06-27 22:17:24,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78668 conditions, 8992 events. 5556/8992 cut-off events. For 474978/475021 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 57604 event pairs, 1361 based on Foata normal form. 12/8775 useless extension candidates. Maximal degree in co-relation 78562. Up to 7212 conditions per place. [2024-06-27 22:17:24,680 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 436 selfloop transitions, 71 changer transitions 0/582 dead transitions. [2024-06-27 22:17:24,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 582 transitions, 10711 flow [2024-06-27 22:17:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:24,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 22:17:24,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-27 22:17:24,682 INFO L175 Difference]: Start difference. First operand has 236 places, 521 transitions, 8992 flow. Second operand 9 states and 220 transitions. [2024-06-27 22:17:24,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 582 transitions, 10711 flow [2024-06-27 22:17:25,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 582 transitions, 10391 flow, removed 150 selfloop flow, removed 3 redundant places. [2024-06-27 22:17:25,770 INFO L231 Difference]: Finished difference. Result has 243 places, 539 transitions, 9392 flow [2024-06-27 22:17:25,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8816, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9392, PETRI_PLACES=243, PETRI_TRANSITIONS=539} [2024-06-27 22:17:25,771 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 190 predicate places. [2024-06-27 22:17:25,771 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 539 transitions, 9392 flow [2024-06-27 22:17:25,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:17:25,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:25,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:25,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:17:25,771 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:25,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash -795175316, now seen corresponding path program 5 times [2024-06-27 22:17:25,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:25,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874585264] [2024-06-27 22:17:25,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:25,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:27,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:27,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874585264] [2024-06-27 22:17:27,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874585264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:27,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:27,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:17:27,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567924638] [2024-06-27 22:17:27,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:27,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:17:27,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:27,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:17:27,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:17:27,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:17:27,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 539 transitions, 9392 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:17:27,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:27,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:17:27,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:29,234 INFO L124 PetriNetUnfolderBase]: 5604/9064 cut-off events. [2024-06-27 22:17:29,234 INFO L125 PetriNetUnfolderBase]: For 474186/474229 co-relation queries the response was YES. [2024-06-27 22:17:29,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79337 conditions, 9064 events. 5604/9064 cut-off events. For 474186/474229 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 58068 event pairs, 1386 based on Foata normal form. 12/8847 useless extension candidates. Maximal degree in co-relation 79228. Up to 7350 conditions per place. [2024-06-27 22:17:29,341 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 435 selfloop transitions, 75 changer transitions 0/585 dead transitions. [2024-06-27 22:17:29,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 585 transitions, 10774 flow [2024-06-27 22:17:29,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:29,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 22:17:29,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 22:17:29,343 INFO L175 Difference]: Start difference. First operand has 243 places, 539 transitions, 9392 flow. Second operand 9 states and 219 transitions. [2024-06-27 22:17:29,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 585 transitions, 10774 flow [2024-06-27 22:17:30,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 585 transitions, 10494 flow, removed 117 selfloop flow, removed 4 redundant places. [2024-06-27 22:17:30,458 INFO L231 Difference]: Finished difference. Result has 248 places, 545 transitions, 9476 flow [2024-06-27 22:17:30,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9112, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9476, PETRI_PLACES=248, PETRI_TRANSITIONS=545} [2024-06-27 22:17:30,458 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 195 predicate places. [2024-06-27 22:17:30,458 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 545 transitions, 9476 flow [2024-06-27 22:17:30,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:17:30,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:30,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:30,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:17:30,461 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:30,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:30,461 INFO L85 PathProgramCache]: Analyzing trace with hash -678990416, now seen corresponding path program 6 times [2024-06-27 22:17:30,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:30,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219739749] [2024-06-27 22:17:30,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:30,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:31,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:31,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219739749] [2024-06-27 22:17:31,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219739749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:31,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:31,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:17:31,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959921869] [2024-06-27 22:17:31,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:31,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:17:31,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:31,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:17:31,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:17:31,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:17:31,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 545 transitions, 9476 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:17:31,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:31,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:17:31,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:34,220 INFO L124 PetriNetUnfolderBase]: 5636/9108 cut-off events. [2024-06-27 22:17:34,220 INFO L125 PetriNetUnfolderBase]: For 495752/495798 co-relation queries the response was YES. [2024-06-27 22:17:34,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80526 conditions, 9108 events. 5636/9108 cut-off events. For 495752/495798 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 58328 event pairs, 1371 based on Foata normal form. 8/8885 useless extension candidates. Maximal degree in co-relation 80415. Up to 7351 conditions per place. [2024-06-27 22:17:34,349 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 419 selfloop transitions, 94 changer transitions 0/588 dead transitions. [2024-06-27 22:17:34,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 588 transitions, 10850 flow [2024-06-27 22:17:34,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:17:34,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:17:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 22:17:34,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 22:17:34,351 INFO L175 Difference]: Start difference. First operand has 248 places, 545 transitions, 9476 flow. Second operand 9 states and 219 transitions. [2024-06-27 22:17:34,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 588 transitions, 10850 flow [2024-06-27 22:17:35,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 588 transitions, 10600 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-27 22:17:35,502 INFO L231 Difference]: Finished difference. Result has 252 places, 548 transitions, 9599 flow [2024-06-27 22:17:35,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9226, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9599, PETRI_PLACES=252, PETRI_TRANSITIONS=548} [2024-06-27 22:17:35,503 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 199 predicate places. [2024-06-27 22:17:35,503 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 548 transitions, 9599 flow [2024-06-27 22:17:35,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:17:35,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:35,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:35,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:17:35,503 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:35,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1978612186, now seen corresponding path program 1 times [2024-06-27 22:17:35,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:35,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846705789] [2024-06-27 22:17:35,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:35,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:37,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:37,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846705789] [2024-06-27 22:17:37,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846705789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:37,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:37,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:17:37,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705006649] [2024-06-27 22:17:37,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:37,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:17:37,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:37,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:17:37,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:17:37,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:17:37,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 548 transitions, 9599 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 22:17:37,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:37,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:17:37,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:39,650 INFO L124 PetriNetUnfolderBase]: 5877/9406 cut-off events. [2024-06-27 22:17:39,650 INFO L125 PetriNetUnfolderBase]: For 516191/516191 co-relation queries the response was YES. [2024-06-27 22:17:39,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83543 conditions, 9406 events. 5877/9406 cut-off events. For 516191/516191 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 59630 event pairs, 1446 based on Foata normal form. 3/9173 useless extension candidates. Maximal degree in co-relation 83431. Up to 7574 conditions per place. [2024-06-27 22:17:39,770 INFO L140 encePairwiseOnDemand]: 30/47 looper letters, 370 selfloop transitions, 223 changer transitions 0/602 dead transitions. [2024-06-27 22:17:39,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 602 transitions, 11461 flow [2024-06-27 22:17:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:17:39,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:17:39,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-27 22:17:39,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-27 22:17:39,771 INFO L175 Difference]: Start difference. First operand has 252 places, 548 transitions, 9599 flow. Second operand 10 states and 246 transitions. [2024-06-27 22:17:39,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 602 transitions, 11461 flow [2024-06-27 22:17:40,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 602 transitions, 11114 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-06-27 22:17:40,706 INFO L231 Difference]: Finished difference. Result has 255 places, 552 transitions, 9868 flow [2024-06-27 22:17:40,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9252, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9868, PETRI_PLACES=255, PETRI_TRANSITIONS=552} [2024-06-27 22:17:40,707 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 202 predicate places. [2024-06-27 22:17:40,707 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 552 transitions, 9868 flow [2024-06-27 22:17:40,707 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 22:17:40,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:40,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:40,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:17:40,708 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:40,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:40,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1894071250, now seen corresponding path program 2 times [2024-06-27 22:17:40,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:40,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830086043] [2024-06-27 22:17:40,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:40,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:42,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:42,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:42,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830086043] [2024-06-27 22:17:42,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830086043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:42,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:42,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:42,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141747455] [2024-06-27 22:17:42,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:42,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:42,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:42,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:42,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:42,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:17:42,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 552 transitions, 9868 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:42,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:42,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:17:42,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:44,871 INFO L124 PetriNetUnfolderBase]: 5919/9478 cut-off events. [2024-06-27 22:17:44,872 INFO L125 PetriNetUnfolderBase]: For 535318/535318 co-relation queries the response was YES. [2024-06-27 22:17:44,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85631 conditions, 9478 events. 5919/9478 cut-off events. For 535318/535318 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 60224 event pairs, 1447 based on Foata normal form. 3/9243 useless extension candidates. Maximal degree in co-relation 85518. Up to 7632 conditions per place. [2024-06-27 22:17:45,001 INFO L140 encePairwiseOnDemand]: 30/47 looper letters, 397 selfloop transitions, 201 changer transitions 0/607 dead transitions. [2024-06-27 22:17:45,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 607 transitions, 11844 flow [2024-06-27 22:17:45,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:17:45,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:17:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-06-27 22:17:45,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255319148936171 [2024-06-27 22:17:45,002 INFO L175 Difference]: Start difference. First operand has 255 places, 552 transitions, 9868 flow. Second operand 10 states and 247 transitions. [2024-06-27 22:17:45,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 607 transitions, 11844 flow [2024-06-27 22:17:46,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 607 transitions, 11324 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 22:17:46,311 INFO L231 Difference]: Finished difference. Result has 257 places, 556 transitions, 9928 flow [2024-06-27 22:17:46,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9348, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9928, PETRI_PLACES=257, PETRI_TRANSITIONS=556} [2024-06-27 22:17:46,312 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 204 predicate places. [2024-06-27 22:17:46,312 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 556 transitions, 9928 flow [2024-06-27 22:17:46,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:46,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:46,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:46,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 22:17:46,312 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:46,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1894280500, now seen corresponding path program 3 times [2024-06-27 22:17:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:46,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419264782] [2024-06-27 22:17:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:46,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:48,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:48,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:48,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419264782] [2024-06-27 22:17:48,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419264782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:48,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:48,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:17:48,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733620810] [2024-06-27 22:17:48,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:48,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:17:48,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:48,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:17:48,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:17:48,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:17:48,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 556 transitions, 9928 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:48,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:48,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:17:48,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:50,348 INFO L124 PetriNetUnfolderBase]: 5981/9594 cut-off events. [2024-06-27 22:17:50,349 INFO L125 PetriNetUnfolderBase]: For 559149/559149 co-relation queries the response was YES. [2024-06-27 22:17:50,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87619 conditions, 9594 events. 5981/9594 cut-off events. For 559149/559149 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 61195 event pairs, 1442 based on Foata normal form. 3/9353 useless extension candidates. Maximal degree in co-relation 87505. Up to 7523 conditions per place. [2024-06-27 22:17:50,492 INFO L140 encePairwiseOnDemand]: 30/47 looper letters, 364 selfloop transitions, 247 changer transitions 0/620 dead transitions. [2024-06-27 22:17:50,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 620 transitions, 12132 flow [2024-06-27 22:17:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:17:50,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:17:50,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 22:17:50,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-27 22:17:50,493 INFO L175 Difference]: Start difference. First operand has 257 places, 556 transitions, 9928 flow. Second operand 10 states and 248 transitions. [2024-06-27 22:17:50,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 620 transitions, 12132 flow [2024-06-27 22:17:51,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 620 transitions, 11680 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 22:17:51,610 INFO L231 Difference]: Finished difference. Result has 261 places, 568 transitions, 10436 flow [2024-06-27 22:17:51,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9476, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10436, PETRI_PLACES=261, PETRI_TRANSITIONS=568} [2024-06-27 22:17:51,611 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 208 predicate places. [2024-06-27 22:17:51,611 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 568 transitions, 10436 flow [2024-06-27 22:17:51,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:51,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:51,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:51,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 22:17:51,611 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:51,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:51,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1894280779, now seen corresponding path program 1 times [2024-06-27 22:17:51,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:51,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238909891] [2024-06-27 22:17:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:51,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:52,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:52,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238909891] [2024-06-27 22:17:52,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238909891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:52,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:52,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:17:52,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509166428] [2024-06-27 22:17:52,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:52,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:17:52,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:17:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:17:53,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:17:53,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 568 transitions, 10436 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 22:17:53,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:53,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:17:53,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:17:55,349 INFO L124 PetriNetUnfolderBase]: 6129/9475 cut-off events. [2024-06-27 22:17:55,349 INFO L125 PetriNetUnfolderBase]: For 609200/609204 co-relation queries the response was YES. [2024-06-27 22:17:55,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91486 conditions, 9475 events. 6129/9475 cut-off events. For 609200/609204 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 58219 event pairs, 1773 based on Foata normal form. 10/9328 useless extension candidates. Maximal degree in co-relation 91370. Up to 8316 conditions per place. [2024-06-27 22:17:55,491 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 540 selfloop transitions, 117 changer transitions 0/666 dead transitions. [2024-06-27 22:17:55,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 666 transitions, 13443 flow [2024-06-27 22:17:55,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:17:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:17:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-27 22:17:55,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276595744680851 [2024-06-27 22:17:55,492 INFO L175 Difference]: Start difference. First operand has 261 places, 568 transitions, 10436 flow. Second operand 10 states and 248 transitions. [2024-06-27 22:17:55,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 666 transitions, 13443 flow [2024-06-27 22:17:57,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 666 transitions, 12765 flow, removed 112 selfloop flow, removed 7 redundant places. [2024-06-27 22:17:57,150 INFO L231 Difference]: Finished difference. Result has 267 places, 607 transitions, 11268 flow [2024-06-27 22:17:57,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9822, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11268, PETRI_PLACES=267, PETRI_TRANSITIONS=607} [2024-06-27 22:17:57,151 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 214 predicate places. [2024-06-27 22:17:57,151 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 607 transitions, 11268 flow [2024-06-27 22:17:57,151 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 22:17:57,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:17:57,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:17:57,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 22:17:57,151 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:17:57,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:17:57,152 INFO L85 PathProgramCache]: Analyzing trace with hash -951091185, now seen corresponding path program 1 times [2024-06-27 22:17:57,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:17:57,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674458703] [2024-06-27 22:17:57,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:17:57,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:17:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:17:57,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:17:57,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:17:57,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674458703] [2024-06-27 22:17:57,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674458703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:17:57,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:17:57,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:17:57,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563155698] [2024-06-27 22:17:57,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:17:57,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:17:57,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:17:57,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:17:57,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:17:58,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:17:58,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 607 transitions, 11268 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:17:58,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:17:58,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:17:58,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:00,456 INFO L124 PetriNetUnfolderBase]: 6161/9847 cut-off events. [2024-06-27 22:18:00,456 INFO L125 PetriNetUnfolderBase]: For 618428/618428 co-relation queries the response was YES. [2024-06-27 22:18:00,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92705 conditions, 9847 events. 6161/9847 cut-off events. For 618428/618428 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 62777 event pairs, 1500 based on Foata normal form. 7/9611 useless extension candidates. Maximal degree in co-relation 92585. Up to 8452 conditions per place. [2024-06-27 22:18:00,586 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 529 selfloop transitions, 135 changer transitions 0/673 dead transitions. [2024-06-27 22:18:00,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 673 transitions, 13570 flow [2024-06-27 22:18:00,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:18:00,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:18:00,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 22:18:00,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-06-27 22:18:00,587 INFO L175 Difference]: Start difference. First operand has 267 places, 607 transitions, 11268 flow. Second operand 7 states and 171 transitions. [2024-06-27 22:18:00,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 673 transitions, 13570 flow [2024-06-27 22:18:02,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 673 transitions, 12648 flow, removed 454 selfloop flow, removed 2 redundant places. [2024-06-27 22:18:02,172 INFO L231 Difference]: Finished difference. Result has 273 places, 639 transitions, 11435 flow [2024-06-27 22:18:02,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10468, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11435, PETRI_PLACES=273, PETRI_TRANSITIONS=639} [2024-06-27 22:18:02,173 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 220 predicate places. [2024-06-27 22:18:02,173 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 639 transitions, 11435 flow [2024-06-27 22:18:02,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:02,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:02,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:02,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 22:18:02,173 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:18:02,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:02,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1131610598, now seen corresponding path program 7 times [2024-06-27 22:18:02,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:02,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049126415] [2024-06-27 22:18:02,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:02,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:03,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:03,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049126415] [2024-06-27 22:18:03,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049126415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:03,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:03,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:03,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371344747] [2024-06-27 22:18:03,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:03,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:03,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:03,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:03,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:03,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:18:03,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 639 transitions, 11435 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:18:03,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:03,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:18:03,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:06,336 INFO L124 PetriNetUnfolderBase]: 6024/9763 cut-off events. [2024-06-27 22:18:06,336 INFO L125 PetriNetUnfolderBase]: For 616504/616554 co-relation queries the response was YES. [2024-06-27 22:18:06,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91510 conditions, 9763 events. 6024/9763 cut-off events. For 616504/616554 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 63652 event pairs, 1232 based on Foata normal form. 6/9519 useless extension candidates. Maximal degree in co-relation 91387. Up to 7880 conditions per place. [2024-06-27 22:18:06,499 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 509 selfloop transitions, 77 changer transitions 0/685 dead transitions. [2024-06-27 22:18:06,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 685 transitions, 13045 flow [2024-06-27 22:18:06,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:18:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:18:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 22:18:06,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940898345153664 [2024-06-27 22:18:06,501 INFO L175 Difference]: Start difference. First operand has 273 places, 639 transitions, 11435 flow. Second operand 9 states and 209 transitions. [2024-06-27 22:18:06,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 685 transitions, 13045 flow [2024-06-27 22:18:08,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 685 transitions, 12849 flow, removed 73 selfloop flow, removed 3 redundant places. [2024-06-27 22:18:08,335 INFO L231 Difference]: Finished difference. Result has 279 places, 651 transitions, 11707 flow [2024-06-27 22:18:08,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11239, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11707, PETRI_PLACES=279, PETRI_TRANSITIONS=651} [2024-06-27 22:18:08,335 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 226 predicate places. [2024-06-27 22:18:08,335 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 651 transitions, 11707 flow [2024-06-27 22:18:08,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:18:08,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:08,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:08,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 22:18:08,336 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:18:08,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:08,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1128723878, now seen corresponding path program 8 times [2024-06-27 22:18:08,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:08,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352228899] [2024-06-27 22:18:08,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:08,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:09,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:09,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:09,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352228899] [2024-06-27 22:18:09,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352228899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:09,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:09,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:09,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274752849] [2024-06-27 22:18:09,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:09,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:09,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:09,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:09,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:09,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:18:09,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 651 transitions, 11707 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:18:09,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:09,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:18:09,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:12,180 INFO L124 PetriNetUnfolderBase]: 6233/10068 cut-off events. [2024-06-27 22:18:12,181 INFO L125 PetriNetUnfolderBase]: For 654221/654271 co-relation queries the response was YES. [2024-06-27 22:18:12,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94959 conditions, 10068 events. 6233/10068 cut-off events. For 654221/654271 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 65681 event pairs, 1246 based on Foata normal form. 6/9824 useless extension candidates. Maximal degree in co-relation 94834. Up to 8072 conditions per place. [2024-06-27 22:18:12,349 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 540 selfloop transitions, 85 changer transitions 0/724 dead transitions. [2024-06-27 22:18:12,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 724 transitions, 13776 flow [2024-06-27 22:18:12,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:18:12,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:18:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 22:18:12,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-27 22:18:12,350 INFO L175 Difference]: Start difference. First operand has 279 places, 651 transitions, 11707 flow. Second operand 9 states and 210 transitions. [2024-06-27 22:18:12,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 724 transitions, 13776 flow [2024-06-27 22:18:13,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 724 transitions, 13459 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-06-27 22:18:13,966 INFO L231 Difference]: Finished difference. Result has 282 places, 687 transitions, 12315 flow [2024-06-27 22:18:13,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11390, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12315, PETRI_PLACES=282, PETRI_TRANSITIONS=687} [2024-06-27 22:18:13,967 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 229 predicate places. [2024-06-27 22:18:13,967 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 687 transitions, 12315 flow [2024-06-27 22:18:13,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:18:13,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:13,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:13,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 22:18:13,967 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:18:13,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:13,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1247795498, now seen corresponding path program 9 times [2024-06-27 22:18:13,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:13,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054013710] [2024-06-27 22:18:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:13,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:15,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:15,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054013710] [2024-06-27 22:18:15,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054013710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:15,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:15,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:18:15,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491137384] [2024-06-27 22:18:15,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:15,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:18:15,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:15,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:18:15,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:18:15,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:18:15,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 687 transitions, 12315 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:18:15,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:15,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:18:15,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:18,111 INFO L124 PetriNetUnfolderBase]: 6288/10145 cut-off events. [2024-06-27 22:18:18,111 INFO L125 PetriNetUnfolderBase]: For 681150/681200 co-relation queries the response was YES. [2024-06-27 22:18:18,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96625 conditions, 10145 events. 6288/10145 cut-off events. For 681150/681200 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 66089 event pairs, 1264 based on Foata normal form. 6/9900 useless extension candidates. Maximal degree in co-relation 96499. Up to 8233 conditions per place. [2024-06-27 22:18:18,242 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 543 selfloop transitions, 85 changer transitions 0/727 dead transitions. [2024-06-27 22:18:18,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 727 transitions, 13953 flow [2024-06-27 22:18:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:18:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:18:18,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 22:18:18,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 22:18:18,243 INFO L175 Difference]: Start difference. First operand has 282 places, 687 transitions, 12315 flow. Second operand 8 states and 197 transitions. [2024-06-27 22:18:18,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 727 transitions, 13953 flow [2024-06-27 22:18:19,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 727 transitions, 13633 flow, removed 134 selfloop flow, removed 5 redundant places. [2024-06-27 22:18:19,887 INFO L231 Difference]: Finished difference. Result has 285 places, 693 transitions, 12399 flow [2024-06-27 22:18:19,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11995, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12399, PETRI_PLACES=285, PETRI_TRANSITIONS=693} [2024-06-27 22:18:19,888 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 232 predicate places. [2024-06-27 22:18:19,888 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 693 transitions, 12399 flow [2024-06-27 22:18:19,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:18:19,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:19,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:19,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 22:18:19,889 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:18:19,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:19,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1131616550, now seen corresponding path program 4 times [2024-06-27 22:18:19,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:19,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226541540] [2024-06-27 22:18:19,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:19,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:21,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:21,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226541540] [2024-06-27 22:18:21,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226541540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:21,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:21,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:18:21,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365710908] [2024-06-27 22:18:21,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:21,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:18:21,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:21,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:18:21,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:18:21,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:18:21,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 693 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 22:18:21,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:21,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:18:21,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:24,719 INFO L124 PetriNetUnfolderBase]: 6577/10471 cut-off events. [2024-06-27 22:18:24,719 INFO L125 PetriNetUnfolderBase]: For 707063/707063 co-relation queries the response was YES. [2024-06-27 22:18:24,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100239 conditions, 10471 events. 6577/10471 cut-off events. For 707063/707063 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 67248 event pairs, 1368 based on Foata normal form. 3/10228 useless extension candidates. Maximal degree in co-relation 100111. Up to 8852 conditions per place. [2024-06-27 22:18:24,887 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 575 selfloop transitions, 184 changer transitions 0/768 dead transitions. [2024-06-27 22:18:24,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 768 transitions, 15244 flow [2024-06-27 22:18:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:18:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:18:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 253 transitions. [2024-06-27 22:18:24,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 22:18:24,889 INFO L175 Difference]: Start difference. First operand has 285 places, 693 transitions, 12399 flow. Second operand 11 states and 253 transitions. [2024-06-27 22:18:24,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 768 transitions, 15244 flow [2024-06-27 22:18:26,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 768 transitions, 14852 flow, removed 115 selfloop flow, removed 6 redundant places. [2024-06-27 22:18:26,993 INFO L231 Difference]: Finished difference. Result has 292 places, 718 transitions, 13250 flow [2024-06-27 22:18:26,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12007, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13250, PETRI_PLACES=292, PETRI_TRANSITIONS=718} [2024-06-27 22:18:26,994 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 239 predicate places. [2024-06-27 22:18:26,995 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 718 transitions, 13250 flow [2024-06-27 22:18:26,995 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 22:18:26,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:26,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:26,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 22:18:26,995 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:18:26,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:26,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1824720664, now seen corresponding path program 5 times [2024-06-27 22:18:26,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:26,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842868414] [2024-06-27 22:18:26,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:26,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:28,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:28,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842868414] [2024-06-27 22:18:28,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842868414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:28,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:28,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:28,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077883972] [2024-06-27 22:18:28,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:28,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:28,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:28,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:28,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:29,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:18:29,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 718 transitions, 13250 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:29,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:29,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:18:29,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:31,838 INFO L124 PetriNetUnfolderBase]: 6657/10592 cut-off events. [2024-06-27 22:18:31,838 INFO L125 PetriNetUnfolderBase]: For 736378/736378 co-relation queries the response was YES. [2024-06-27 22:18:31,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103222 conditions, 10592 events. 6657/10592 cut-off events. For 736378/736378 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 68133 event pairs, 1366 based on Foata normal form. 3/10344 useless extension candidates. Maximal degree in co-relation 103091. Up to 8773 conditions per place. [2024-06-27 22:18:32,367 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 575 selfloop transitions, 187 changer transitions 0/771 dead transitions. [2024-06-27 22:18:32,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 771 transitions, 15649 flow [2024-06-27 22:18:32,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:18:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:18:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-27 22:18:32,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-27 22:18:32,371 INFO L175 Difference]: Start difference. First operand has 292 places, 718 transitions, 13250 flow. Second operand 10 states and 236 transitions. [2024-06-27 22:18:32,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 771 transitions, 15649 flow [2024-06-27 22:18:34,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 771 transitions, 15160 flow, removed 170 selfloop flow, removed 6 redundant places. [2024-06-27 22:18:34,581 INFO L231 Difference]: Finished difference. Result has 296 places, 726 transitions, 13453 flow [2024-06-27 22:18:34,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12761, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13453, PETRI_PLACES=296, PETRI_TRANSITIONS=726} [2024-06-27 22:18:34,582 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 243 predicate places. [2024-06-27 22:18:34,582 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 726 transitions, 13453 flow [2024-06-27 22:18:34,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:34,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:34,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:34,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 22:18:34,583 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:18:34,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:34,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1738684060, now seen corresponding path program 6 times [2024-06-27 22:18:34,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:34,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499391773] [2024-06-27 22:18:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:34,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:36,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:36,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499391773] [2024-06-27 22:18:36,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499391773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:36,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:36,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:18:36,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995850533] [2024-06-27 22:18:36,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:36,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:18:36,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:36,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:18:36,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:18:36,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:18:36,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 726 transitions, 13453 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 22:18:36,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:36,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:18:36,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:39,286 INFO L124 PetriNetUnfolderBase]: 6717/10681 cut-off events. [2024-06-27 22:18:39,286 INFO L125 PetriNetUnfolderBase]: For 763538/763538 co-relation queries the response was YES. [2024-06-27 22:18:39,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105950 conditions, 10681 events. 6717/10681 cut-off events. For 763538/763538 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 68669 event pairs, 1366 based on Foata normal form. 3/10433 useless extension candidates. Maximal degree in co-relation 105818. Up to 8863 conditions per place. [2024-06-27 22:18:39,453 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 564 selfloop transitions, 204 changer transitions 0/777 dead transitions. [2024-06-27 22:18:39,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 777 transitions, 15768 flow [2024-06-27 22:18:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:18:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:18:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 22:18:39,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 22:18:39,454 INFO L175 Difference]: Start difference. First operand has 296 places, 726 transitions, 13453 flow. Second operand 9 states and 222 transitions. [2024-06-27 22:18:39,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 777 transitions, 15768 flow [2024-06-27 22:18:41,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 777 transitions, 15288 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-27 22:18:41,284 INFO L231 Difference]: Finished difference. Result has 297 places, 735 transitions, 13768 flow [2024-06-27 22:18:41,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12973, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13768, PETRI_PLACES=297, PETRI_TRANSITIONS=735} [2024-06-27 22:18:41,285 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 244 predicate places. [2024-06-27 22:18:41,285 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 735 transitions, 13768 flow [2024-06-27 22:18:41,285 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 22:18:41,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:41,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:41,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 22:18:41,286 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:18:41,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:41,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1738676620, now seen corresponding path program 7 times [2024-06-27 22:18:41,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:41,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931733978] [2024-06-27 22:18:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:41,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:43,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:43,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931733978] [2024-06-27 22:18:43,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931733978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:43,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:43,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:43,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175441321] [2024-06-27 22:18:43,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:43,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:43,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:43,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:43,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:43,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:18:43,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 735 transitions, 13768 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:43,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:43,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:18:43,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:46,356 INFO L124 PetriNetUnfolderBase]: 6817/10866 cut-off events. [2024-06-27 22:18:46,356 INFO L125 PetriNetUnfolderBase]: For 801353/801353 co-relation queries the response was YES. [2024-06-27 22:18:46,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109019 conditions, 10866 events. 6817/10866 cut-off events. For 801353/801353 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 70299 event pairs, 1366 based on Foata normal form. 3/10610 useless extension candidates. Maximal degree in co-relation 108886. Up to 8787 conditions per place. [2024-06-27 22:18:46,515 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 540 selfloop transitions, 249 changer transitions 0/798 dead transitions. [2024-06-27 22:18:46,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 798 transitions, 16511 flow [2024-06-27 22:18:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:18:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:18:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-06-27 22:18:46,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042553191489362 [2024-06-27 22:18:46,516 INFO L175 Difference]: Start difference. First operand has 297 places, 735 transitions, 13768 flow. Second operand 10 states and 237 transitions. [2024-06-27 22:18:46,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 798 transitions, 16511 flow [2024-06-27 22:18:48,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 798 transitions, 15802 flow, removed 156 selfloop flow, removed 7 redundant places. [2024-06-27 22:18:48,564 INFO L231 Difference]: Finished difference. Result has 301 places, 751 transitions, 14262 flow [2024-06-27 22:18:48,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=13059, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14262, PETRI_PLACES=301, PETRI_TRANSITIONS=751} [2024-06-27 22:18:48,565 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 248 predicate places. [2024-06-27 22:18:48,565 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 751 transitions, 14262 flow [2024-06-27 22:18:48,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:48,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:48,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:48,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 22:18:48,565 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:18:48,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:48,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1738676341, now seen corresponding path program 2 times [2024-06-27 22:18:48,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:48,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627137513] [2024-06-27 22:18:48,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:48,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:48,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:50,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:50,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627137513] [2024-06-27 22:18:50,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627137513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:50,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:50,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:18:50,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343686788] [2024-06-27 22:18:50,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:50,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:18:50,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:50,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:18:50,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:18:50,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:18:50,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 751 transitions, 14262 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:50,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:50,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:18:50,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:18:53,700 INFO L124 PetriNetUnfolderBase]: 6947/11054 cut-off events. [2024-06-27 22:18:53,700 INFO L125 PetriNetUnfolderBase]: For 854340/854344 co-relation queries the response was YES. [2024-06-27 22:18:53,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112444 conditions, 11054 events. 6947/11054 cut-off events. For 854340/854344 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 71698 event pairs, 1838 based on Foata normal form. 10/10812 useless extension candidates. Maximal degree in co-relation 112309. Up to 9437 conditions per place. [2024-06-27 22:18:53,858 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 683 selfloop transitions, 117 changer transitions 0/809 dead transitions. [2024-06-27 22:18:53,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 809 transitions, 16833 flow [2024-06-27 22:18:53,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:18:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:18:53,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-06-27 22:18:53,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:18:53,860 INFO L175 Difference]: Start difference. First operand has 301 places, 751 transitions, 14262 flow. Second operand 10 states and 235 transitions. [2024-06-27 22:18:53,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 809 transitions, 16833 flow [2024-06-27 22:18:56,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 809 transitions, 16389 flow, removed 102 selfloop flow, removed 6 redundant places. [2024-06-27 22:18:56,311 INFO L231 Difference]: Finished difference. Result has 305 places, 757 transitions, 14320 flow [2024-06-27 22:18:56,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=13818, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14320, PETRI_PLACES=305, PETRI_TRANSITIONS=757} [2024-06-27 22:18:56,312 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 252 predicate places. [2024-06-27 22:18:56,312 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 757 transitions, 14320 flow [2024-06-27 22:18:56,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:56,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:18:56,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:18:56,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 22:18:56,312 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:18:56,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:18:56,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1407696565, now seen corresponding path program 2 times [2024-06-27 22:18:56,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:18:56,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122701560] [2024-06-27 22:18:56,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:18:56,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:18:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:18:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:18:57,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:18:57,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122701560] [2024-06-27 22:18:57,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122701560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:18:57,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:18:57,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:18:57,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871440296] [2024-06-27 22:18:57,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:18:57,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:18:57,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:18:57,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:18:57,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:18:57,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:18:57,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 757 transitions, 14320 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:18:57,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:18:57,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:18:57,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:00,432 INFO L124 PetriNetUnfolderBase]: 7024/11232 cut-off events. [2024-06-27 22:19:00,433 INFO L125 PetriNetUnfolderBase]: For 854472/854472 co-relation queries the response was YES. [2024-06-27 22:19:00,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114423 conditions, 11232 events. 7024/11232 cut-off events. For 854472/854472 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 73371 event pairs, 1353 based on Foata normal form. 2/10960 useless extension candidates. Maximal degree in co-relation 114286. Up to 9641 conditions per place. [2024-06-27 22:19:00,822 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 653 selfloop transitions, 161 changer transitions 0/823 dead transitions. [2024-06-27 22:19:00,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 823 transitions, 17062 flow [2024-06-27 22:19:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:19:00,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:19:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-27 22:19:00,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 22:19:00,823 INFO L175 Difference]: Start difference. First operand has 305 places, 757 transitions, 14320 flow. Second operand 6 states and 148 transitions. [2024-06-27 22:19:00,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 823 transitions, 17062 flow [2024-06-27 22:19:03,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 823 transitions, 16717 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:03,030 INFO L231 Difference]: Finished difference. Result has 304 places, 789 transitions, 15037 flow [2024-06-27 22:19:03,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=13999, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=15037, PETRI_PLACES=304, PETRI_TRANSITIONS=789} [2024-06-27 22:19:03,031 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 251 predicate places. [2024-06-27 22:19:03,031 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 789 transitions, 15037 flow [2024-06-27 22:19:03,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:03,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:03,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:03,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 22:19:03,031 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:19:03,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:03,032 INFO L85 PathProgramCache]: Analyzing trace with hash 559074538, now seen corresponding path program 10 times [2024-06-27 22:19:03,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:03,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418102539] [2024-06-27 22:19:03,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:03,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:04,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:04,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418102539] [2024-06-27 22:19:04,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418102539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:04,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:04,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:19:04,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755185258] [2024-06-27 22:19:04,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:04,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:19:04,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:04,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:19:04,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:19:04,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 22:19:04,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 789 transitions, 15037 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:19:04,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:04,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 22:19:04,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:07,768 INFO L124 PetriNetUnfolderBase]: 6771/10976 cut-off events. [2024-06-27 22:19:07,768 INFO L125 PetriNetUnfolderBase]: For 834209/834277 co-relation queries the response was YES. [2024-06-27 22:19:07,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110517 conditions, 10976 events. 6771/10976 cut-off events. For 834209/834277 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 72994 event pairs, 1299 based on Foata normal form. 6/10703 useless extension candidates. Maximal degree in co-relation 110377. Up to 8749 conditions per place. [2024-06-27 22:19:07,926 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 588 selfloop transitions, 110 changer transitions 0/825 dead transitions. [2024-06-27 22:19:07,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 825 transitions, 16809 flow [2024-06-27 22:19:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:19:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:19:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 22:19:07,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 22:19:07,928 INFO L175 Difference]: Start difference. First operand has 304 places, 789 transitions, 15037 flow. Second operand 8 states and 196 transitions. [2024-06-27 22:19:07,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 825 transitions, 16809 flow [2024-06-27 22:19:09,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 825 transitions, 16553 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 22:19:09,955 INFO L231 Difference]: Finished difference. Result has 308 places, 792 transitions, 15233 flow [2024-06-27 22:19:09,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14781, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=679, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15233, PETRI_PLACES=308, PETRI_TRANSITIONS=792} [2024-06-27 22:19:09,956 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 255 predicate places. [2024-06-27 22:19:09,956 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 792 transitions, 15233 flow [2024-06-27 22:19:09,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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 22:19:09,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:09,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:09,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 22:19:09,956 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:19:09,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:09,957 INFO L85 PathProgramCache]: Analyzing trace with hash 815782810, now seen corresponding path program 8 times [2024-06-27 22:19:09,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:09,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27487889] [2024-06-27 22:19:09,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:09,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:12,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:12,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27487889] [2024-06-27 22:19:12,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27487889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:12,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:12,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:12,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503955216] [2024-06-27 22:19:12,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:12,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:12,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:12,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:12,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:12,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:19:12,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 792 transitions, 15233 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 22:19:12,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:12,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:19:12,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:15,480 INFO L124 PetriNetUnfolderBase]: 7048/11264 cut-off events. [2024-06-27 22:19:15,480 INFO L125 PetriNetUnfolderBase]: For 888806/888806 co-relation queries the response was YES. [2024-06-27 22:19:15,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115053 conditions, 11264 events. 7048/11264 cut-off events. For 888806/888806 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 73668 event pairs, 1373 based on Foata normal form. 3/10995 useless extension candidates. Maximal degree in co-relation 114913. Up to 8774 conditions per place. [2024-06-27 22:19:15,638 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 503 selfloop transitions, 325 changer transitions 0/837 dead transitions. [2024-06-27 22:19:15,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 837 transitions, 17603 flow [2024-06-27 22:19:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-27 22:19:15,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-27 22:19:15,639 INFO L175 Difference]: Start difference. First operand has 308 places, 792 transitions, 15233 flow. Second operand 9 states and 222 transitions. [2024-06-27 22:19:15,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 837 transitions, 17603 flow [2024-06-27 22:19:17,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 837 transitions, 17175 flow, removed 106 selfloop flow, removed 6 redundant places. [2024-06-27 22:19:17,865 INFO L231 Difference]: Finished difference. Result has 311 places, 797 transitions, 15767 flow [2024-06-27 22:19:17,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14805, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15767, PETRI_PLACES=311, PETRI_TRANSITIONS=797} [2024-06-27 22:19:17,866 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 258 predicate places. [2024-06-27 22:19:17,866 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 797 transitions, 15767 flow [2024-06-27 22:19:17,866 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 22:19:17,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:17,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:17,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 22:19:17,866 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:19:17,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:17,867 INFO L85 PathProgramCache]: Analyzing trace with hash 815790250, now seen corresponding path program 9 times [2024-06-27 22:19:17,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:17,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596426484] [2024-06-27 22:19:17,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:17,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:19:19,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:19,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596426484] [2024-06-27 22:19:19,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596426484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:19,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:19,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:19:19,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244410051] [2024-06-27 22:19:19,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:19,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:19:19,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:19,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:19:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:19:19,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:19:19,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 797 transitions, 15767 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 22:19:19,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:19,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:19:19,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:22,975 INFO L124 PetriNetUnfolderBase]: 7205/11511 cut-off events. [2024-06-27 22:19:22,975 INFO L125 PetriNetUnfolderBase]: For 958066/958066 co-relation queries the response was YES. [2024-06-27 22:19:23,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121449 conditions, 11511 events. 7205/11511 cut-off events. For 958066/958066 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 75370 event pairs, 1340 based on Foata normal form. 3/11240 useless extension candidates. Maximal degree in co-relation 121308. Up to 8584 conditions per place. [2024-06-27 22:19:23,341 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 432 selfloop transitions, 431 changer transitions 0/872 dead transitions. [2024-06-27 22:19:23,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 872 transitions, 19417 flow [2024-06-27 22:19:23,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:19:23,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:19:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-27 22:19:23,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5437352245862884 [2024-06-27 22:19:23,343 INFO L175 Difference]: Start difference. First operand has 311 places, 797 transitions, 15767 flow. Second operand 9 states and 230 transitions. [2024-06-27 22:19:23,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 872 transitions, 19417 flow [2024-06-27 22:19:25,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 872 transitions, 18491 flow, removed 141 selfloop flow, removed 7 redundant places. [2024-06-27 22:19:25,880 INFO L231 Difference]: Finished difference. Result has 316 places, 820 transitions, 17398 flow [2024-06-27 22:19:25,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14841, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=414, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17398, PETRI_PLACES=316, PETRI_TRANSITIONS=820} [2024-06-27 22:19:25,880 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 263 predicate places. [2024-06-27 22:19:25,880 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 820 transitions, 17398 flow [2024-06-27 22:19:25,881 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 22:19:25,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:25,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:25,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 22:19:25,881 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:19:25,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:25,881 INFO L85 PathProgramCache]: Analyzing trace with hash -369634322, now seen corresponding path program 10 times [2024-06-27 22:19:25,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:25,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016885897] [2024-06-27 22:19:25,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:25,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:19:27,690 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 22:19:27,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:19:27,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016885897] [2024-06-27 22:19:27,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016885897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:19:27,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:19:27,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:19:27,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782012302] [2024-06-27 22:19:27,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:19:27,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:19:27,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:19:27,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:19:27,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:19:27,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 22:19:27,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 820 transitions, 17398 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:27,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:19:27,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 22:19:27,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:19:31,218 INFO L124 PetriNetUnfolderBase]: 7292/11655 cut-off events. [2024-06-27 22:19:31,218 INFO L125 PetriNetUnfolderBase]: For 1023942/1023942 co-relation queries the response was YES. [2024-06-27 22:19:31,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127414 conditions, 11655 events. 7292/11655 cut-off events. For 1023942/1023942 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 76652 event pairs, 1392 based on Foata normal form. 3/11382 useless extension candidates. Maximal degree in co-relation 127269. Up to 8488 conditions per place. [2024-06-27 22:19:31,394 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 444 selfloop transitions, 431 changer transitions 0/884 dead transitions. [2024-06-27 22:19:31,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 884 transitions, 21004 flow [2024-06-27 22:19:31,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:19:31,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:19:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-27 22:19:31,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2024-06-27 22:19:31,395 INFO L175 Difference]: Start difference. First operand has 316 places, 820 transitions, 17398 flow. Second operand 10 states and 241 transitions. [2024-06-27 22:19:31,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 884 transitions, 21004 flow [2024-06-27 22:19:35,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 884 transitions, 19966 flow, removed 445 selfloop flow, removed 2 redundant places. [2024-06-27 22:19:35,077 INFO L231 Difference]: Finished difference. Result has 325 places, 836 transitions, 18374 flow [2024-06-27 22:19:35,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=16648, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=419, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18374, PETRI_PLACES=325, PETRI_TRANSITIONS=836} [2024-06-27 22:19:35,079 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 272 predicate places. [2024-06-27 22:19:35,079 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 836 transitions, 18374 flow [2024-06-27 22:19:35,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:19:35,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:19:35,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:19:35,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 22:19:35,079 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:19:35,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:19:35,080 INFO L85 PathProgramCache]: Analyzing trace with hash 824987299, now seen corresponding path program 3 times [2024-06-27 22:19:35,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:19:35,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48272924] [2024-06-27 22:19:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:19:35,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:19:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat