./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix015.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix015.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/mix015.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix015.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 23:22:42,797 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 23:22:42,875 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 23:22:42,881 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 23:22:42,881 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 23:22:42,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 23:22:42,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 23:22:42,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 23:22:42,911 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 23:22:42,915 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 23:22:42,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 23:22:42,916 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 23:22:42,917 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 23:22:42,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 23:22:42,918 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 23:22:42,919 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 23:22:42,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 23:22:42,919 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 23:22:42,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 23:22:42,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 23:22:42,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 23:22:42,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 23:22:42,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 23:22:42,921 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 23:22:42,921 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 23:22:42,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 23:22:42,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 23:22:42,922 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 23:22:42,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 23:22:42,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 23:22:42,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 23:22:42,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 23:22:42,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:22:42,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 23:22:42,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 23:22:42,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 23:22:42,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 23:22:42,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 23:22:42,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 23:22:42,926 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 23:22:42,926 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 23:22:42,926 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 23:22:42,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 23:22:42,927 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 23:22:43,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 23:22:43,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 23:22:43,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 23:22:43,253 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 23:22:43,253 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 23:22:43,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix015.opt.i [2024-06-27 23:22:44,390 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 23:22:44,637 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 23:22:44,638 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix015.opt.i [2024-06-27 23:22:44,653 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e1ecbdb/e3925c2f96864a37847ee11b93359386/FLAGe52bcfa52 [2024-06-27 23:22:44,669 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54e1ecbdb/e3925c2f96864a37847ee11b93359386 [2024-06-27 23:22:44,670 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 23:22:44,671 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 23:22:44,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix015.opt.yml/witness.yml [2024-06-27 23:22:44,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 23:22:44,764 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 23:22:44,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 23:22:44,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 23:22:44,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 23:22:44,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:22:44" (1/2) ... [2024-06-27 23:22:44,771 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b7bcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:22:44, skipping insertion in model container [2024-06-27 23:22:44,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 11:22:44" (1/2) ... [2024-06-27 23:22:44,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c9e1b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 11:22:44, skipping insertion in model container [2024-06-27 23:22:44,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:22:44" (2/2) ... [2024-06-27 23:22:44,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22b7bcdd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:44, skipping insertion in model container [2024-06-27 23:22:44,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:22:44" (2/2) ... [2024-06-27 23:22:44,777 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 23:22:44,808 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 23:22:44,810 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff1_used >= 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_p0_EBX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )a >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )x >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:22:44,810 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff1_used >= 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_p0_EBX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )a >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )x >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:22:44,811 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p2_EBX) + (long long )a >= 0LL) && (0LL - (long long )z) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$mem_tmp) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff0_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff0 >= 0LL) && (0LL - (long long )z$r_buff1_thd3) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )z$w_buff1_used >= 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_p0_EBX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p1_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 )z$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )z$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )a >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )x >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff0_used >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1 >= 0LL) && (long long )z$w_buff0 - (long long )z$w_buff1_used >= 0LL) && (long long )z$w_buff1 - (long long )z$w_buff1_used >= 0LL) [2024-06-27 23:22:44,811 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 23:22:44,811 INFO L106 edCorrectnessWitness]: ghost_update [L854-L854] multithreaded = 1; [2024-06-27 23:22:44,862 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 23:22:45,253 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:22:45,266 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 23:22:45,418 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 23:22:45,465 INFO L206 MainTranslator]: Completed translation [2024-06-27 23:22:45,466 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45 WrapperNode [2024-06-27 23:22:45,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 23:22:45,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 23:22:45,468 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 23:22:45,468 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 23:22:45,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (1/1) ... [2024-06-27 23:22:45,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (1/1) ... [2024-06-27 23:22:45,567 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2024-06-27 23:22:45,567 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 23:22:45,568 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 23:22:45,568 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 23:22:45,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 23:22:45,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (1/1) ... [2024-06-27 23:22:45,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (1/1) ... [2024-06-27 23:22:45,595 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (1/1) ... [2024-06-27 23:22:45,649 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 23:22:45,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (1/1) ... [2024-06-27 23:22:45,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (1/1) ... [2024-06-27 23:22:45,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (1/1) ... [2024-06-27 23:22:45,669 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (1/1) ... [2024-06-27 23:22:45,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (1/1) ... [2024-06-27 23:22:45,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (1/1) ... [2024-06-27 23:22:45,680 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 23:22:45,681 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 23:22:45,681 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 23:22:45,681 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 23:22:45,682 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (1/1) ... [2024-06-27 23:22:45,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 23:22:45,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 23:22:45,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 23:22:45,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 23:22:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 23:22:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 23:22:45,755 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 23:22:45,756 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 23:22:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 23:22:45,756 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 23:22:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 23:22:45,756 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 23:22:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 23:22:45,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 23:22:45,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 23:22:45,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 23:22:45,758 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 23:22:45,907 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 23:22:45,910 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 23:22:46,353 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 23:22:46,353 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 23:22:46,551 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 23:22:46,551 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 23:22:46,552 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:22:46 BoogieIcfgContainer [2024-06-27 23:22:46,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 23:22:46,554 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 23:22:46,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 23:22:46,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 23:22:46,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 11:22:44" (1/4) ... [2024-06-27 23:22:46,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562eac4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 11:22:46, skipping insertion in model container [2024-06-27 23:22:46,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 11:22:44" (2/4) ... [2024-06-27 23:22:46,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562eac4b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:22:46, skipping insertion in model container [2024-06-27 23:22:46,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 11:22:45" (3/4) ... [2024-06-27 23:22:46,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562eac4b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 11:22:46, skipping insertion in model container [2024-06-27 23:22:46,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 11:22:46" (4/4) ... [2024-06-27 23:22:46,563 INFO L112 eAbstractionObserver]: Analyzing ICFG mix015.opt.i [2024-06-27 23:22:46,599 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 23:22:46,599 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 23:22:46,600 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 23:22:46,651 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 23:22:46,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 43 transitions, 98 flow [2024-06-27 23:22:46,728 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-06-27 23:22:46,728 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:22:46,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 23:22:46,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 43 transitions, 98 flow [2024-06-27 23:22:46,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2024-06-27 23:22:46,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 23:22:46,754 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;@4e4fd942, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 23:22:46,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 23:22:46,758 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 23:22:46,758 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 23:22:46,758 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 23:22:46,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:46,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 23:22:46,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:22:46,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:46,767 INFO L85 PathProgramCache]: Analyzing trace with hash 402627273, now seen corresponding path program 1 times [2024-06-27 23:22:46,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:46,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553712978] [2024-06-27 23:22:46,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:46,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:48,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:48,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553712978] [2024-06-27 23:22:48,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553712978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:48,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:48,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 23:22:48,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446432589] [2024-06-27 23:22:48,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:48,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 23:22:48,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:48,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 23:22:48,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 23:22:48,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-06-27 23:22:48,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:48,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:48,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-06-27 23:22:48,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:48,803 INFO L124 PetriNetUnfolderBase]: 1062/1704 cut-off events. [2024-06-27 23:22:48,803 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-06-27 23:22:48,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 1704 events. 1062/1704 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8773 event pairs, 752 based on Foata normal form. 2/1645 useless extension candidates. Maximal degree in co-relation 3369. Up to 1593 conditions per place. [2024-06-27 23:22:48,817 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 32 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-27 23:22:48,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 177 flow [2024-06-27 23:22:48,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 23:22:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 23:22:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-06-27 23:22:48,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6511627906976745 [2024-06-27 23:22:48,831 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 3 states and 84 transitions. [2024-06-27 23:22:48,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 177 flow [2024-06-27 23:22:48,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 23:22:48,839 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 104 flow [2024-06-27 23:22:48,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2024-06-27 23:22:48,845 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2024-06-27 23:22:48,846 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 104 flow [2024-06-27 23:22:48,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:48,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:48,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:48,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 23:22:48,847 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:22:48,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:48,848 INFO L85 PathProgramCache]: Analyzing trace with hash 377774120, now seen corresponding path program 1 times [2024-06-27 23:22:48,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:48,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808839986] [2024-06-27 23:22:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:48,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:49,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:49,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808839986] [2024-06-27 23:22:49,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808839986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:49,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:49,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 23:22:49,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825109484] [2024-06-27 23:22:49,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:49,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 23:22:49,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:49,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 23:22:49,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 23:22:50,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-06-27 23:22:50,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:50,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:50,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-06-27 23:22:50,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:50,466 INFO L124 PetriNetUnfolderBase]: 1213/1866 cut-off events. [2024-06-27 23:22:50,466 INFO L125 PetriNetUnfolderBase]: For 378/378 co-relation queries the response was YES. [2024-06-27 23:22:50,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4284 conditions, 1866 events. 1213/1866 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9434 event pairs, 629 based on Foata normal form. 5/1867 useless extension candidates. Maximal degree in co-relation 4272. Up to 1782 conditions per place. [2024-06-27 23:22:50,480 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 41 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-27 23:22:50,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 250 flow [2024-06-27 23:22:50,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 23:22:50,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 23:22:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-06-27 23:22:50,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.622093023255814 [2024-06-27 23:22:50,484 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 104 flow. Second operand 4 states and 107 transitions. [2024-06-27 23:22:50,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 56 transitions, 250 flow [2024-06-27 23:22:50,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 23:22:50,488 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 140 flow [2024-06-27 23:22:50,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-06-27 23:22:50,489 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2024-06-27 23:22:50,489 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 140 flow [2024-06-27 23:22:50,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:50,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:50,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:50,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 23:22:50,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:22:50,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:50,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1173903438, now seen corresponding path program 1 times [2024-06-27 23:22:50,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:50,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393638982] [2024-06-27 23:22:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:50,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:51,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:51,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393638982] [2024-06-27 23:22:51,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393638982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:51,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:51,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:22:51,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750764536] [2024-06-27 23:22:51,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:51,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:22:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:51,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:22:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:22:51,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:22:51,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:51,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:51,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:22:51,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:52,278 INFO L124 PetriNetUnfolderBase]: 1425/2159 cut-off events. [2024-06-27 23:22:52,278 INFO L125 PetriNetUnfolderBase]: For 1245/1245 co-relation queries the response was YES. [2024-06-27 23:22:52,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5536 conditions, 2159 events. 1425/2159 cut-off events. For 1245/1245 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10637 event pairs, 659 based on Foata normal form. 5/2160 useless extension candidates. Maximal degree in co-relation 5522. Up to 2064 conditions per place. [2024-06-27 23:22:52,294 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 50 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-06-27 23:22:52,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 334 flow [2024-06-27 23:22:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:22:52,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:22:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-27 23:22:52,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5953488372093023 [2024-06-27 23:22:52,299 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 140 flow. Second operand 5 states and 128 transitions. [2024-06-27 23:22:52,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 334 flow [2024-06-27 23:22:52,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 320 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 23:22:52,304 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 176 flow [2024-06-27 23:22:52,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-27 23:22:52,305 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2024-06-27 23:22:52,305 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 176 flow [2024-06-27 23:22:52,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:52,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:52,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:52,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 23:22:52,306 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:22:52,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash -950747879, now seen corresponding path program 1 times [2024-06-27 23:22:52,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:52,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113119730] [2024-06-27 23:22:52,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:52,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:53,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:53,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:53,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113119730] [2024-06-27 23:22:53,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113119730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:53,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:53,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:22:53,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943335260] [2024-06-27 23:22:53,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:53,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:22:53,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:53,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:22:53,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:22:53,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:22:53,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 176 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 23:22:53,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:53,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:22:53,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:54,230 INFO L124 PetriNetUnfolderBase]: 1414/2148 cut-off events. [2024-06-27 23:22:54,230 INFO L125 PetriNetUnfolderBase]: For 2342/2362 co-relation queries the response was YES. [2024-06-27 23:22:54,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6053 conditions, 2148 events. 1414/2148 cut-off events. For 2342/2362 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10681 event pairs, 570 based on Foata normal form. 25/2170 useless extension candidates. Maximal degree in co-relation 6038. Up to 2019 conditions per place. [2024-06-27 23:22:54,249 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 58 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2024-06-27 23:22:54,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 416 flow [2024-06-27 23:22:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 23:22:54,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 23:22:54,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-27 23:22:54,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5891472868217055 [2024-06-27 23:22:54,252 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 176 flow. Second operand 6 states and 152 transitions. [2024-06-27 23:22:54,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 416 flow [2024-06-27 23:22:54,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 78 transitions, 392 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 23:22:54,258 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 212 flow [2024-06-27 23:22:54,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-27 23:22:54,260 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2024-06-27 23:22:54,260 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 212 flow [2024-06-27 23:22:54,261 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 23:22:54,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:54,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:54,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 23:22:54,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:22:54,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:54,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1455219313, now seen corresponding path program 1 times [2024-06-27 23:22:54,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:54,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675280997] [2024-06-27 23:22:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:55,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:55,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675280997] [2024-06-27 23:22:55,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675280997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:55,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:55,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:22:55,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679188996] [2024-06-27 23:22:55,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:55,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:22:55,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:55,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:22:55,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:22:55,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:22:55,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:55,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:55,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:22:55,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:56,444 INFO L124 PetriNetUnfolderBase]: 1812/2727 cut-off events. [2024-06-27 23:22:56,444 INFO L125 PetriNetUnfolderBase]: For 4252/4252 co-relation queries the response was YES. [2024-06-27 23:22:56,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8158 conditions, 2727 events. 1812/2727 cut-off events. For 4252/4252 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13284 event pairs, 496 based on Foata normal form. 7/2732 useless extension candidates. Maximal degree in co-relation 8142. Up to 2478 conditions per place. [2024-06-27 23:22:56,463 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 73 selfloop transitions, 20 changer transitions 0/99 dead transitions. [2024-06-27 23:22:56,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 99 transitions, 572 flow [2024-06-27 23:22:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:22:56,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:22:56,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 23:22:56,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913621262458472 [2024-06-27 23:22:56,465 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 212 flow. Second operand 7 states and 178 transitions. [2024-06-27 23:22:56,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 99 transitions, 572 flow [2024-06-27 23:22:56,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 99 transitions, 538 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 23:22:56,476 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 283 flow [2024-06-27 23:22:56,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=283, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-06-27 23:22:56,479 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2024-06-27 23:22:56,479 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 283 flow [2024-06-27 23:22:56,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:56,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:56,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:56,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 23:22:56,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:22:56,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:56,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1693552336, now seen corresponding path program 1 times [2024-06-27 23:22:56,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:56,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965900854] [2024-06-27 23:22:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:56,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:22:58,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:22:58,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:22:58,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965900854] [2024-06-27 23:22:58,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965900854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:22:58,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:22:58,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:22:58,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133602779] [2024-06-27 23:22:58,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:22:58,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:22:58,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:22:58,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:22:58,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:22:58,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:22:58,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 283 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:58,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:22:58,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:22:58,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:22:58,845 INFO L124 PetriNetUnfolderBase]: 1878/2865 cut-off events. [2024-06-27 23:22:58,845 INFO L125 PetriNetUnfolderBase]: For 7054/7054 co-relation queries the response was YES. [2024-06-27 23:22:58,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9343 conditions, 2865 events. 1878/2865 cut-off events. For 7054/7054 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14254 event pairs, 400 based on Foata normal form. 26/2889 useless extension candidates. Maximal degree in co-relation 9326. Up to 2438 conditions per place. [2024-06-27 23:22:58,867 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 81 selfloop transitions, 22 changer transitions 0/109 dead transitions. [2024-06-27 23:22:58,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 109 transitions, 665 flow [2024-06-27 23:22:58,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:22:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:22:58,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-27 23:22:58,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813953488372093 [2024-06-27 23:22:58,870 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 283 flow. Second operand 8 states and 200 transitions. [2024-06-27 23:22:58,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 109 transitions, 665 flow [2024-06-27 23:22:58,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 109 transitions, 637 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:22:58,876 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 315 flow [2024-06-27 23:22:58,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=315, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-06-27 23:22:58,879 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2024-06-27 23:22:58,879 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 315 flow [2024-06-27 23:22:58,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:22:58,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:22:58,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:22:58,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 23:22:58,880 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:22:58,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:22:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1079308024, now seen corresponding path program 1 times [2024-06-27 23:22:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:22:58,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481032289] [2024-06-27 23:22:58,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:22:58,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:22:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:01,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:01,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481032289] [2024-06-27 23:23:01,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481032289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:01,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:01,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:23:01,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791580871] [2024-06-27 23:23:01,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:01,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:23:01,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:01,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:23:01,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:23:01,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:23:01,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 315 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 23:23:01,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:01,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:23:01,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:02,075 INFO L124 PetriNetUnfolderBase]: 1544/2475 cut-off events. [2024-06-27 23:23:02,076 INFO L125 PetriNetUnfolderBase]: For 7858/7881 co-relation queries the response was YES. [2024-06-27 23:23:02,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8491 conditions, 2475 events. 1544/2475 cut-off events. For 7858/7881 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13150 event pairs, 637 based on Foata normal form. 27/2475 useless extension candidates. Maximal degree in co-relation 8471. Up to 2268 conditions per place. [2024-06-27 23:23:02,102 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 60 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2024-06-27 23:23:02,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 83 transitions, 579 flow [2024-06-27 23:23:02,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:23:02,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:23:02,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 23:23:02,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-27 23:23:02,104 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 315 flow. Second operand 8 states and 156 transitions. [2024-06-27 23:23:02,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 83 transitions, 579 flow [2024-06-27 23:23:02,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 83 transitions, 527 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 23:23:02,110 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 387 flow [2024-06-27 23:23:02,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=387, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-06-27 23:23:02,111 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 21 predicate places. [2024-06-27 23:23:02,112 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 387 flow [2024-06-27 23:23:02,112 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 23:23:02,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:02,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:02,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 23:23:02,113 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:02,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:02,113 INFO L85 PathProgramCache]: Analyzing trace with hash -685239082, now seen corresponding path program 1 times [2024-06-27 23:23:02,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:02,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014181836] [2024-06-27 23:23:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:02,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:03,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:03,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014181836] [2024-06-27 23:23:03,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014181836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:03,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:03,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 23:23:03,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055514779] [2024-06-27 23:23:03,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:03,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 23:23:03,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:03,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 23:23:03,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 23:23:03,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:23:03,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 387 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 23:23:03,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:03,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:23:03,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:04,030 INFO L124 PetriNetUnfolderBase]: 1469/2376 cut-off events. [2024-06-27 23:23:04,031 INFO L125 PetriNetUnfolderBase]: For 9891/9965 co-relation queries the response was YES. [2024-06-27 23:23:04,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8713 conditions, 2376 events. 1469/2376 cut-off events. For 9891/9965 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12951 event pairs, 583 based on Foata normal form. 8/2328 useless extension candidates. Maximal degree in co-relation 8688. Up to 2147 conditions per place. [2024-06-27 23:23:04,046 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 48 selfloop transitions, 15 changer transitions 0/75 dead transitions. [2024-06-27 23:23:04,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 555 flow [2024-06-27 23:23:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 23:23:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 23:23:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-06-27 23:23:04,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023255813953489 [2024-06-27 23:23:04,047 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 387 flow. Second operand 5 states and 108 transitions. [2024-06-27 23:23:04,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 555 flow [2024-06-27 23:23:04,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 516 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 23:23:04,055 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 419 flow [2024-06-27 23:23:04,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2024-06-27 23:23:04,057 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2024-06-27 23:23:04,057 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 419 flow [2024-06-27 23:23:04,057 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 23:23:04,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:04,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:04,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 23:23:04,058 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:04,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:04,058 INFO L85 PathProgramCache]: Analyzing trace with hash 232426522, now seen corresponding path program 1 times [2024-06-27 23:23:04,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:04,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619619386] [2024-06-27 23:23:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:04,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:06,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:06,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619619386] [2024-06-27 23:23:06,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619619386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:06,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:06,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:23:06,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040111666] [2024-06-27 23:23:06,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:06,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:23:06,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:06,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:23:06,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:23:06,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:23:06,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 419 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 23:23:06,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:06,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:23:06,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:06,752 INFO L124 PetriNetUnfolderBase]: 1466/2377 cut-off events. [2024-06-27 23:23:06,752 INFO L125 PetriNetUnfolderBase]: For 12320/12412 co-relation queries the response was YES. [2024-06-27 23:23:06,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9388 conditions, 2377 events. 1466/2377 cut-off events. For 12320/12412 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12985 event pairs, 563 based on Foata normal form. 11/2332 useless extension candidates. Maximal degree in co-relation 9362. Up to 2129 conditions per place. [2024-06-27 23:23:06,771 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 50 selfloop transitions, 19 changer transitions 0/81 dead transitions. [2024-06-27 23:23:06,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 609 flow [2024-06-27 23:23:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:23:06,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:23:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-27 23:23:06,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-27 23:23:06,773 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 419 flow. Second operand 7 states and 140 transitions. [2024-06-27 23:23:06,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 609 flow [2024-06-27 23:23:06,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 81 transitions, 570 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 23:23:06,783 INFO L231 Difference]: Finished difference. Result has 71 places, 72 transitions, 463 flow [2024-06-27 23:23:06,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=71, PETRI_TRANSITIONS=72} [2024-06-27 23:23:06,784 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 27 predicate places. [2024-06-27 23:23:06,785 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 72 transitions, 463 flow [2024-06-27 23:23:06,785 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 23:23:06,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:06,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:06,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 23:23:06,785 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:06,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1717788027, now seen corresponding path program 1 times [2024-06-27 23:23:06,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:06,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419723094] [2024-06-27 23:23:06,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:09,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:09,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419723094] [2024-06-27 23:23:09,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419723094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:09,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:09,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:23:09,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627110035] [2024-06-27 23:23:09,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:09,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:23:09,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:09,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:23:09,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:23:09,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:23:09,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 72 transitions, 463 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:09,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:09,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:23:09,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:10,189 INFO L124 PetriNetUnfolderBase]: 1936/2968 cut-off events. [2024-06-27 23:23:10,190 INFO L125 PetriNetUnfolderBase]: For 16162/16162 co-relation queries the response was YES. [2024-06-27 23:23:10,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12378 conditions, 2968 events. 1936/2968 cut-off events. For 16162/16162 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14778 event pairs, 629 based on Foata normal form. 4/2971 useless extension candidates. Maximal degree in co-relation 12351. Up to 2769 conditions per place. [2024-06-27 23:23:10,215 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 97 selfloop transitions, 30 changer transitions 0/132 dead transitions. [2024-06-27 23:23:10,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 132 transitions, 999 flow [2024-06-27 23:23:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:23:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:23:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-27 23:23:10,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625322997416021 [2024-06-27 23:23:10,217 INFO L175 Difference]: Start difference. First operand has 71 places, 72 transitions, 463 flow. Second operand 9 states and 179 transitions. [2024-06-27 23:23:10,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 132 transitions, 999 flow [2024-06-27 23:23:10,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 132 transitions, 944 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 23:23:10,229 INFO L231 Difference]: Finished difference. Result has 79 places, 95 transitions, 672 flow [2024-06-27 23:23:10,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=672, PETRI_PLACES=79, PETRI_TRANSITIONS=95} [2024-06-27 23:23:10,230 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-06-27 23:23:10,232 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 95 transitions, 672 flow [2024-06-27 23:23:10,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:10,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:10,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:10,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 23:23:10,233 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:10,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:10,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1680781077, now seen corresponding path program 1 times [2024-06-27 23:23:10,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:10,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487957317] [2024-06-27 23:23:10,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:10,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:12,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487957317] [2024-06-27 23:23:12,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487957317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:12,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:12,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:23:12,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595095230] [2024-06-27 23:23:12,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:12,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:23:12,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:12,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:23:12,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:23:12,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:23:12,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 95 transitions, 672 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:12,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:12,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:23:12,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:13,410 INFO L124 PetriNetUnfolderBase]: 1896/2976 cut-off events. [2024-06-27 23:23:13,410 INFO L125 PetriNetUnfolderBase]: For 19235/19254 co-relation queries the response was YES. [2024-06-27 23:23:13,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12845 conditions, 2976 events. 1896/2976 cut-off events. For 19235/19254 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 15377 event pairs, 615 based on Foata normal form. 21/2995 useless extension candidates. Maximal degree in co-relation 12812. Up to 2703 conditions per place. [2024-06-27 23:23:13,439 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 97 selfloop transitions, 30 changer transitions 0/135 dead transitions. [2024-06-27 23:23:13,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 135 transitions, 1112 flow [2024-06-27 23:23:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:23:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:23:13,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 23:23:13,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-27 23:23:13,443 INFO L175 Difference]: Start difference. First operand has 79 places, 95 transitions, 672 flow. Second operand 9 states and 174 transitions. [2024-06-27 23:23:13,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 135 transitions, 1112 flow [2024-06-27 23:23:13,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 135 transitions, 1070 flow, removed 21 selfloop flow, removed 0 redundant places. [2024-06-27 23:23:13,463 INFO L231 Difference]: Finished difference. Result has 90 places, 108 transitions, 813 flow [2024-06-27 23:23:13,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=813, PETRI_PLACES=90, PETRI_TRANSITIONS=108} [2024-06-27 23:23:13,464 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 46 predicate places. [2024-06-27 23:23:13,464 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 108 transitions, 813 flow [2024-06-27 23:23:13,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:13,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:13,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:13,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 23:23:13,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:13,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:13,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1385172137, now seen corresponding path program 1 times [2024-06-27 23:23:13,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:13,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977816228] [2024-06-27 23:23:13,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:13,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:14,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:14,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977816228] [2024-06-27 23:23:14,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977816228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:14,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:14,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:23:14,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305193741] [2024-06-27 23:23:14,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:14,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:23:14,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:14,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:23:14,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:23:14,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:23:14,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 108 transitions, 813 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 23:23:14,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:14,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:23:14,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:15,480 INFO L124 PetriNetUnfolderBase]: 1802/2872 cut-off events. [2024-06-27 23:23:15,481 INFO L125 PetriNetUnfolderBase]: For 21669/21696 co-relation queries the response was YES. [2024-06-27 23:23:15,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12825 conditions, 2872 events. 1802/2872 cut-off events. For 21669/21696 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15101 event pairs, 611 based on Foata normal form. 26/2889 useless extension candidates. Maximal degree in co-relation 12786. Up to 2606 conditions per place. [2024-06-27 23:23:15,505 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 87 selfloop transitions, 25 changer transitions 0/129 dead transitions. [2024-06-27 23:23:15,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 129 transitions, 1147 flow [2024-06-27 23:23:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:23:15,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:23:15,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-27 23:23:15,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2024-06-27 23:23:15,507 INFO L175 Difference]: Start difference. First operand has 90 places, 108 transitions, 813 flow. Second operand 7 states and 136 transitions. [2024-06-27 23:23:15,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 129 transitions, 1147 flow [2024-06-27 23:23:15,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 129 transitions, 1082 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 23:23:15,529 INFO L231 Difference]: Finished difference. Result has 97 places, 117 transitions, 919 flow [2024-06-27 23:23:15,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=919, PETRI_PLACES=97, PETRI_TRANSITIONS=117} [2024-06-27 23:23:15,530 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 53 predicate places. [2024-06-27 23:23:15,530 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 117 transitions, 919 flow [2024-06-27 23:23:15,531 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 23:23:15,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:15,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:15,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 23:23:15,531 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:15,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:15,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1945440491, now seen corresponding path program 2 times [2024-06-27 23:23:15,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:15,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568053475] [2024-06-27 23:23:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:15,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:17,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:17,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568053475] [2024-06-27 23:23:17,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568053475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:17,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:17,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:23:17,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959979455] [2024-06-27 23:23:17,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:17,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:23:17,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:17,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:23:17,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:23:17,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:23:17,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 117 transitions, 919 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:17,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:17,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:23:17,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:18,557 INFO L124 PetriNetUnfolderBase]: 1934/3034 cut-off events. [2024-06-27 23:23:18,557 INFO L125 PetriNetUnfolderBase]: For 25678/25699 co-relation queries the response was YES. [2024-06-27 23:23:18,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14190 conditions, 3034 events. 1934/3034 cut-off events. For 25678/25699 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 15688 event pairs, 604 based on Foata normal form. 23/3056 useless extension candidates. Maximal degree in co-relation 14147. Up to 2756 conditions per place. [2024-06-27 23:23:18,581 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 100 selfloop transitions, 39 changer transitions 0/147 dead transitions. [2024-06-27 23:23:18,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 147 transitions, 1326 flow [2024-06-27 23:23:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:23:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:23:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 23:23:18,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:23:18,583 INFO L175 Difference]: Start difference. First operand has 97 places, 117 transitions, 919 flow. Second operand 9 states and 172 transitions. [2024-06-27 23:23:18,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 147 transitions, 1326 flow [2024-06-27 23:23:18,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 147 transitions, 1290 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-27 23:23:18,610 INFO L231 Difference]: Finished difference. Result has 105 places, 124 transitions, 1055 flow [2024-06-27 23:23:18,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1055, PETRI_PLACES=105, PETRI_TRANSITIONS=124} [2024-06-27 23:23:18,610 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 61 predicate places. [2024-06-27 23:23:18,611 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 124 transitions, 1055 flow [2024-06-27 23:23:18,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:18,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:18,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:18,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 23:23:18,611 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:18,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:18,612 INFO L85 PathProgramCache]: Analyzing trace with hash -280238285, now seen corresponding path program 3 times [2024-06-27 23:23:18,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:18,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662061973] [2024-06-27 23:23:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:18,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:20,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:20,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662061973] [2024-06-27 23:23:20,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662061973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:20,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:20,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:23:20,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985489580] [2024-06-27 23:23:20,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:20,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:23:20,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:20,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:23:20,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:23:20,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:23:20,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 124 transitions, 1055 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:20,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:20,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:23:20,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:21,701 INFO L124 PetriNetUnfolderBase]: 1951/3061 cut-off events. [2024-06-27 23:23:21,701 INFO L125 PetriNetUnfolderBase]: For 28452/28473 co-relation queries the response was YES. [2024-06-27 23:23:21,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14543 conditions, 3061 events. 1951/3061 cut-off events. For 28452/28473 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 15852 event pairs, 609 based on Foata normal form. 23/3083 useless extension candidates. Maximal degree in co-relation 14497. Up to 2783 conditions per place. [2024-06-27 23:23:21,722 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 100 selfloop transitions, 41 changer transitions 0/149 dead transitions. [2024-06-27 23:23:21,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 149 transitions, 1425 flow [2024-06-27 23:23:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:23:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:23:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 23:23:21,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-27 23:23:21,724 INFO L175 Difference]: Start difference. First operand has 105 places, 124 transitions, 1055 flow. Second operand 9 states and 171 transitions. [2024-06-27 23:23:21,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 149 transitions, 1425 flow [2024-06-27 23:23:21,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 149 transitions, 1332 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 23:23:21,751 INFO L231 Difference]: Finished difference. Result has 109 places, 126 transitions, 1085 flow [2024-06-27 23:23:21,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1085, PETRI_PLACES=109, PETRI_TRANSITIONS=126} [2024-06-27 23:23:21,751 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2024-06-27 23:23:21,752 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 126 transitions, 1085 flow [2024-06-27 23:23:21,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:21,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:21,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:21,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 23:23:21,752 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:21,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:21,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1732664119, now seen corresponding path program 4 times [2024-06-27 23:23:21,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:21,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753910451] [2024-06-27 23:23:21,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:21,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:23,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:23,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:23,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753910451] [2024-06-27 23:23:23,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753910451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:23,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:23,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:23:23,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381679792] [2024-06-27 23:23:23,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:23,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:23:23,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:23,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:23:23,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:23:23,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:23:23,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 126 transitions, 1085 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:23,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:23,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:23:23,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:24,437 INFO L124 PetriNetUnfolderBase]: 1968/3087 cut-off events. [2024-06-27 23:23:24,437 INFO L125 PetriNetUnfolderBase]: For 32463/32484 co-relation queries the response was YES. [2024-06-27 23:23:24,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15005 conditions, 3087 events. 1968/3087 cut-off events. For 32463/32484 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16000 event pairs, 568 based on Foata normal form. 23/3109 useless extension candidates. Maximal degree in co-relation 14961. Up to 2709 conditions per place. [2024-06-27 23:23:24,455 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 98 selfloop transitions, 50 changer transitions 0/156 dead transitions. [2024-06-27 23:23:24,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 156 transitions, 1563 flow [2024-06-27 23:23:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:23:24,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:23:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 23:23:24,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2024-06-27 23:23:24,457 INFO L175 Difference]: Start difference. First operand has 109 places, 126 transitions, 1085 flow. Second operand 9 states and 174 transitions. [2024-06-27 23:23:24,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 156 transitions, 1563 flow [2024-06-27 23:23:24,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 156 transitions, 1462 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 23:23:24,482 INFO L231 Difference]: Finished difference. Result has 112 places, 130 transitions, 1163 flow [2024-06-27 23:23:24,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1163, PETRI_PLACES=112, PETRI_TRANSITIONS=130} [2024-06-27 23:23:24,483 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 68 predicate places. [2024-06-27 23:23:24,483 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 130 transitions, 1163 flow [2024-06-27 23:23:24,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:24,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:24,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:24,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 23:23:24,484 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:24,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:24,484 INFO L85 PathProgramCache]: Analyzing trace with hash -27150797, now seen corresponding path program 2 times [2024-06-27 23:23:24,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:24,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115517332] [2024-06-27 23:23:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:24,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:25,807 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 23:23:25,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:25,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115517332] [2024-06-27 23:23:25,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115517332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:25,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:25,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:23:25,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085098913] [2024-06-27 23:23:25,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:25,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:23:25,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:25,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:23:25,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:23:25,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:23:25,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 130 transitions, 1163 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 23:23:25,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:25,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:23:25,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:26,366 INFO L124 PetriNetUnfolderBase]: 1864/2974 cut-off events. [2024-06-27 23:23:26,366 INFO L125 PetriNetUnfolderBase]: For 36153/36183 co-relation queries the response was YES. [2024-06-27 23:23:26,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14739 conditions, 2974 events. 1864/2974 cut-off events. For 36153/36183 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15658 event pairs, 613 based on Foata normal form. 30/2997 useless extension candidates. Maximal degree in co-relation 14696. Up to 2686 conditions per place. [2024-06-27 23:23:26,385 INFO L140 encePairwiseOnDemand]: 34/43 looper letters, 96 selfloop transitions, 33 changer transitions 0/147 dead transitions. [2024-06-27 23:23:26,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 147 transitions, 1539 flow [2024-06-27 23:23:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:23:26,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:23:26,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 23:23:26,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44518272425249167 [2024-06-27 23:23:26,388 INFO L175 Difference]: Start difference. First operand has 112 places, 130 transitions, 1163 flow. Second operand 7 states and 134 transitions. [2024-06-27 23:23:26,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 147 transitions, 1539 flow [2024-06-27 23:23:26,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 147 transitions, 1459 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 23:23:26,420 INFO L231 Difference]: Finished difference. Result has 115 places, 138 transitions, 1247 flow [2024-06-27 23:23:26,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1247, PETRI_PLACES=115, PETRI_TRANSITIONS=138} [2024-06-27 23:23:26,421 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 71 predicate places. [2024-06-27 23:23:26,421 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 138 transitions, 1247 flow [2024-06-27 23:23:26,421 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 23:23:26,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:26,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:26,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 23:23:26,422 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:26,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1891049869, now seen corresponding path program 2 times [2024-06-27 23:23:26,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:26,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873158401] [2024-06-27 23:23:26,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:26,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:28,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:28,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873158401] [2024-06-27 23:23:28,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873158401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:28,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:28,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:23:28,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120912020] [2024-06-27 23:23:28,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:28,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:23:28,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:23:28,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:23:28,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:23:28,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 138 transitions, 1247 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:28,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:28,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:23:28,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:29,165 INFO L124 PetriNetUnfolderBase]: 2200/3384 cut-off events. [2024-06-27 23:23:29,165 INFO L125 PetriNetUnfolderBase]: For 40540/40544 co-relation queries the response was YES. [2024-06-27 23:23:29,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17281 conditions, 3384 events. 2200/3384 cut-off events. For 40540/40544 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17043 event pairs, 603 based on Foata normal form. 8/3391 useless extension candidates. Maximal degree in co-relation 17235. Up to 3095 conditions per place. [2024-06-27 23:23:29,187 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 148 selfloop transitions, 62 changer transitions 0/215 dead transitions. [2024-06-27 23:23:29,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 215 transitions, 2126 flow [2024-06-27 23:23:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:29,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 23:23:29,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-27 23:23:29,189 INFO L175 Difference]: Start difference. First operand has 115 places, 138 transitions, 1247 flow. Second operand 10 states and 196 transitions. [2024-06-27 23:23:29,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 215 transitions, 2126 flow [2024-06-27 23:23:29,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 215 transitions, 2072 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 23:23:29,235 INFO L231 Difference]: Finished difference. Result has 126 places, 173 transitions, 1704 flow [2024-06-27 23:23:29,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1704, PETRI_PLACES=126, PETRI_TRANSITIONS=173} [2024-06-27 23:23:29,236 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 82 predicate places. [2024-06-27 23:23:29,236 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 173 transitions, 1704 flow [2024-06-27 23:23:29,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:29,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:29,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:29,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 23:23:29,237 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:29,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:29,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2109387799, now seen corresponding path program 3 times [2024-06-27 23:23:29,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:29,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143591829] [2024-06-27 23:23:29,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:29,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:29,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:30,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:30,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143591829] [2024-06-27 23:23:30,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143591829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:30,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:30,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:23:30,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551661755] [2024-06-27 23:23:30,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:30,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:23:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:23:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:23:30,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:23:30,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 173 transitions, 1704 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:30,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:30,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:23:30,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:31,619 INFO L124 PetriNetUnfolderBase]: 2372/3677 cut-off events. [2024-06-27 23:23:31,619 INFO L125 PetriNetUnfolderBase]: For 46396/46408 co-relation queries the response was YES. [2024-06-27 23:23:31,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19389 conditions, 3677 events. 2372/3677 cut-off events. For 46396/46408 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 19062 event pairs, 608 based on Foata normal form. 16/3692 useless extension candidates. Maximal degree in co-relation 19337. Up to 3182 conditions per place. [2024-06-27 23:23:31,641 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 158 selfloop transitions, 122 changer transitions 0/285 dead transitions. [2024-06-27 23:23:31,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 285 transitions, 3120 flow [2024-06-27 23:23:31,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 23:23:31,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 23:23:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 271 transitions. [2024-06-27 23:23:31,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45016611295681064 [2024-06-27 23:23:31,643 INFO L175 Difference]: Start difference. First operand has 126 places, 173 transitions, 1704 flow. Second operand 14 states and 271 transitions. [2024-06-27 23:23:31,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 285 transitions, 3120 flow [2024-06-27 23:23:31,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 285 transitions, 2973 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 23:23:31,689 INFO L231 Difference]: Finished difference. Result has 141 places, 226 transitions, 2533 flow [2024-06-27 23:23:31,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2533, PETRI_PLACES=141, PETRI_TRANSITIONS=226} [2024-06-27 23:23:31,690 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 97 predicate places. [2024-06-27 23:23:31,690 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 226 transitions, 2533 flow [2024-06-27 23:23:31,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:31,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:31,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:31,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 23:23:31,691 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:31,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:31,692 INFO L85 PathProgramCache]: Analyzing trace with hash -2033026995, now seen corresponding path program 4 times [2024-06-27 23:23:31,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:31,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060192417] [2024-06-27 23:23:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:31,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:33,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:33,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060192417] [2024-06-27 23:23:33,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060192417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:33,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:33,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:23:33,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351031014] [2024-06-27 23:23:33,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:33,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:23:33,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:23:33,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:23:33,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:23:33,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 226 transitions, 2533 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:33,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:33,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:23:33,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:34,163 INFO L124 PetriNetUnfolderBase]: 2511/3896 cut-off events. [2024-06-27 23:23:34,164 INFO L125 PetriNetUnfolderBase]: For 58533/58539 co-relation queries the response was YES. [2024-06-27 23:23:34,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21927 conditions, 3896 events. 2511/3896 cut-off events. For 58533/58539 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 20482 event pairs, 638 based on Foata normal form. 12/3907 useless extension candidates. Maximal degree in co-relation 21870. Up to 3458 conditions per place. [2024-06-27 23:23:34,189 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 185 selfloop transitions, 119 changer transitions 0/309 dead transitions. [2024-06-27 23:23:34,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 309 transitions, 3899 flow [2024-06-27 23:23:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:34,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:34,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 23:23:34,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-27 23:23:34,191 INFO L175 Difference]: Start difference. First operand has 141 places, 226 transitions, 2533 flow. Second operand 10 states and 196 transitions. [2024-06-27 23:23:34,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 309 transitions, 3899 flow [2024-06-27 23:23:34,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 309 transitions, 3717 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-27 23:23:34,278 INFO L231 Difference]: Finished difference. Result has 150 places, 273 transitions, 3379 flow [2024-06-27 23:23:34,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3379, PETRI_PLACES=150, PETRI_TRANSITIONS=273} [2024-06-27 23:23:34,279 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 106 predicate places. [2024-06-27 23:23:34,279 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 273 transitions, 3379 flow [2024-06-27 23:23:34,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:34,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:34,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:34,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 23:23:34,280 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:34,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:34,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1150334119, now seen corresponding path program 5 times [2024-06-27 23:23:34,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:34,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879416120] [2024-06-27 23:23:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:34,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:35,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:35,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879416120] [2024-06-27 23:23:35,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879416120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:35,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:35,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:23:35,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687319894] [2024-06-27 23:23:35,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:35,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:23:35,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:35,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:23:35,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:23:35,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:23:35,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 273 transitions, 3379 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:35,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:35,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:23:35,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:36,563 INFO L124 PetriNetUnfolderBase]: 2565/3993 cut-off events. [2024-06-27 23:23:36,564 INFO L125 PetriNetUnfolderBase]: For 64068/64074 co-relation queries the response was YES. [2024-06-27 23:23:36,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23269 conditions, 3993 events. 2565/3993 cut-off events. For 64068/64074 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 21201 event pairs, 633 based on Foata normal form. 12/4004 useless extension candidates. Maximal degree in co-relation 23209. Up to 3522 conditions per place. [2024-06-27 23:23:36,658 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 189 selfloop transitions, 131 changer transitions 0/325 dead transitions. [2024-06-27 23:23:36,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 325 transitions, 4414 flow [2024-06-27 23:23:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:36,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 23:23:36,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-27 23:23:36,660 INFO L175 Difference]: Start difference. First operand has 150 places, 273 transitions, 3379 flow. Second operand 10 states and 196 transitions. [2024-06-27 23:23:36,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 325 transitions, 4414 flow [2024-06-27 23:23:36,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 325 transitions, 4138 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 23:23:36,753 INFO L231 Difference]: Finished difference. Result has 156 places, 288 transitions, 3709 flow [2024-06-27 23:23:36,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3108, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3709, PETRI_PLACES=156, PETRI_TRANSITIONS=288} [2024-06-27 23:23:36,754 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 112 predicate places. [2024-06-27 23:23:36,754 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 288 transitions, 3709 flow [2024-06-27 23:23:36,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:36,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:36,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:36,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 23:23:36,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:36,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:36,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1782537459, now seen corresponding path program 5 times [2024-06-27 23:23:36,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:36,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567991215] [2024-06-27 23:23:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:36,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:38,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:38,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567991215] [2024-06-27 23:23:38,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567991215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:38,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:38,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:23:38,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665984274] [2024-06-27 23:23:38,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:38,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:23:38,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:38,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:23:38,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:23:38,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:23:38,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 288 transitions, 3709 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:38,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:38,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:23:38,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:39,650 INFO L124 PetriNetUnfolderBase]: 2522/3967 cut-off events. [2024-06-27 23:23:39,650 INFO L125 PetriNetUnfolderBase]: For 69305/69325 co-relation queries the response was YES. [2024-06-27 23:23:39,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23512 conditions, 3967 events. 2522/3967 cut-off events. For 69305/69325 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21531 event pairs, 699 based on Foata normal form. 24/3983 useless extension candidates. Maximal degree in co-relation 23450. Up to 3559 conditions per place. [2024-06-27 23:23:39,678 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 263 selfloop transitions, 64 changer transitions 0/341 dead transitions. [2024-06-27 23:23:39,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 341 transitions, 4741 flow [2024-06-27 23:23:39,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:23:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:23:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-27 23:23:39,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728682170542636 [2024-06-27 23:23:39,680 INFO L175 Difference]: Start difference. First operand has 156 places, 288 transitions, 3709 flow. Second operand 9 states and 183 transitions. [2024-06-27 23:23:39,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 341 transitions, 4741 flow [2024-06-27 23:23:39,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 341 transitions, 4597 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 23:23:39,752 INFO L231 Difference]: Finished difference. Result has 163 places, 310 transitions, 3976 flow [2024-06-27 23:23:39,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3565, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3976, PETRI_PLACES=163, PETRI_TRANSITIONS=310} [2024-06-27 23:23:39,753 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 119 predicate places. [2024-06-27 23:23:39,753 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 310 transitions, 3976 flow [2024-06-27 23:23:39,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:39,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:39,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:39,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 23:23:39,754 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:39,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:39,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1035338055, now seen corresponding path program 3 times [2024-06-27 23:23:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:39,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993049132] [2024-06-27 23:23:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:39,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:40,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:40,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993049132] [2024-06-27 23:23:40,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993049132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:40,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:40,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 23:23:40,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511986779] [2024-06-27 23:23:40,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:40,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 23:23:40,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:40,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 23:23:40,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 23:23:40,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:23:40,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 310 transitions, 3976 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 23:23:40,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:40,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:23:40,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:41,553 INFO L124 PetriNetUnfolderBase]: 2363/3764 cut-off events. [2024-06-27 23:23:41,553 INFO L125 PetriNetUnfolderBase]: For 73787/73876 co-relation queries the response was YES. [2024-06-27 23:23:41,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22601 conditions, 3764 events. 2363/3764 cut-off events. For 73787/73876 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 20627 event pairs, 660 based on Foata normal form. 90/3816 useless extension candidates. Maximal degree in co-relation 22536. Up to 3347 conditions per place. [2024-06-27 23:23:41,584 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 240 selfloop transitions, 42 changer transitions 0/333 dead transitions. [2024-06-27 23:23:41,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 333 transitions, 4669 flow [2024-06-27 23:23:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:23:41,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:23:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2024-06-27 23:23:41,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4750830564784053 [2024-06-27 23:23:41,585 INFO L175 Difference]: Start difference. First operand has 163 places, 310 transitions, 3976 flow. Second operand 7 states and 143 transitions. [2024-06-27 23:23:41,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 333 transitions, 4669 flow [2024-06-27 23:23:41,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 333 transitions, 4378 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 23:23:41,678 INFO L231 Difference]: Finished difference. Result has 162 places, 316 transitions, 3865 flow [2024-06-27 23:23:41,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3695, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3865, PETRI_PLACES=162, PETRI_TRANSITIONS=316} [2024-06-27 23:23:41,679 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 118 predicate places. [2024-06-27 23:23:41,679 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 316 transitions, 3865 flow [2024-06-27 23:23:41,679 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 23:23:41,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:41,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:41,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 23:23:41,679 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:41,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:41,679 INFO L85 PathProgramCache]: Analyzing trace with hash 830504675, now seen corresponding path program 1 times [2024-06-27 23:23:41,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:41,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656941498] [2024-06-27 23:23:41,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:41,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:43,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:43,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:43,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656941498] [2024-06-27 23:23:43,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656941498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:43,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:43,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:23:43,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951076000] [2024-06-27 23:23:43,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:43,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:23:43,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:43,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:23:43,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:23:43,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:23:43,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 316 transitions, 3865 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:43,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:43,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:23:43,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:44,885 INFO L124 PetriNetUnfolderBase]: 2682/4194 cut-off events. [2024-06-27 23:23:44,885 INFO L125 PetriNetUnfolderBase]: For 78341/78345 co-relation queries the response was YES. [2024-06-27 23:23:44,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24534 conditions, 4194 events. 2682/4194 cut-off events. For 78341/78345 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 22681 event pairs, 684 based on Foata normal form. 8/4200 useless extension candidates. Maximal degree in co-relation 24469. Up to 3669 conditions per place. [2024-06-27 23:23:44,911 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 271 selfloop transitions, 81 changer transitions 0/357 dead transitions. [2024-06-27 23:23:44,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 357 transitions, 4810 flow [2024-06-27 23:23:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:44,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 23:23:44,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4372093023255814 [2024-06-27 23:23:44,913 INFO L175 Difference]: Start difference. First operand has 162 places, 316 transitions, 3865 flow. Second operand 10 states and 188 transitions. [2024-06-27 23:23:44,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 357 transitions, 4810 flow [2024-06-27 23:23:44,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 357 transitions, 4766 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 23:23:45,003 INFO L231 Difference]: Finished difference. Result has 170 places, 327 transitions, 4093 flow [2024-06-27 23:23:45,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3821, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4093, PETRI_PLACES=170, PETRI_TRANSITIONS=327} [2024-06-27 23:23:45,004 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 126 predicate places. [2024-06-27 23:23:45,004 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 327 transitions, 4093 flow [2024-06-27 23:23:45,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:45,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:45,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:45,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 23:23:45,004 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:45,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1882723969, now seen corresponding path program 2 times [2024-06-27 23:23:45,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:45,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106069220] [2024-06-27 23:23:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:45,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:46,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:46,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106069220] [2024-06-27 23:23:46,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106069220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:46,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:46,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:23:46,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157102608] [2024-06-27 23:23:46,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:46,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:23:46,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:46,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:23:46,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:23:46,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:23:46,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 327 transitions, 4093 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:46,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:46,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:23:46,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:48,023 INFO L124 PetriNetUnfolderBase]: 2732/4274 cut-off events. [2024-06-27 23:23:48,023 INFO L125 PetriNetUnfolderBase]: For 85761/85765 co-relation queries the response was YES. [2024-06-27 23:23:48,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25728 conditions, 4274 events. 2732/4274 cut-off events. For 85761/85765 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 23228 event pairs, 681 based on Foata normal form. 8/4280 useless extension candidates. Maximal degree in co-relation 25661. Up to 3727 conditions per place. [2024-06-27 23:23:48,055 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 282 selfloop transitions, 81 changer transitions 0/368 dead transitions. [2024-06-27 23:23:48,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 368 transitions, 5096 flow [2024-06-27 23:23:48,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:48,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 23:23:48,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43953488372093025 [2024-06-27 23:23:48,057 INFO L175 Difference]: Start difference. First operand has 170 places, 327 transitions, 4093 flow. Second operand 10 states and 189 transitions. [2024-06-27 23:23:48,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 368 transitions, 5096 flow [2024-06-27 23:23:48,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 368 transitions, 4934 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 23:23:48,167 INFO L231 Difference]: Finished difference. Result has 177 places, 336 transitions, 4210 flow [2024-06-27 23:23:48,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=3937, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4210, PETRI_PLACES=177, PETRI_TRANSITIONS=336} [2024-06-27 23:23:48,168 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 133 predicate places. [2024-06-27 23:23:48,168 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 336 transitions, 4210 flow [2024-06-27 23:23:48,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:48,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:48,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:48,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 23:23:48,169 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:48,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:48,170 INFO L85 PathProgramCache]: Analyzing trace with hash -564873155, now seen corresponding path program 3 times [2024-06-27 23:23:48,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:48,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310453929] [2024-06-27 23:23:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:48,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:49,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:49,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310453929] [2024-06-27 23:23:49,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310453929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:49,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:49,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:23:49,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214377522] [2024-06-27 23:23:49,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:49,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:23:49,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:49,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:23:49,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:23:50,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:23:50,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 336 transitions, 4210 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:50,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:50,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:23:50,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:51,381 INFO L124 PetriNetUnfolderBase]: 2749/4296 cut-off events. [2024-06-27 23:23:51,381 INFO L125 PetriNetUnfolderBase]: For 93319/93323 co-relation queries the response was YES. [2024-06-27 23:23:51,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26437 conditions, 4296 events. 2749/4296 cut-off events. For 93319/93323 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 23342 event pairs, 686 based on Foata normal form. 8/4302 useless extension candidates. Maximal degree in co-relation 26368. Up to 3754 conditions per place. [2024-06-27 23:23:51,415 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 283 selfloop transitions, 84 changer transitions 0/372 dead transitions. [2024-06-27 23:23:51,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 372 transitions, 5190 flow [2024-06-27 23:23:51,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 23:23:51,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4372093023255814 [2024-06-27 23:23:51,417 INFO L175 Difference]: Start difference. First operand has 177 places, 336 transitions, 4210 flow. Second operand 10 states and 188 transitions. [2024-06-27 23:23:51,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 372 transitions, 5190 flow [2024-06-27 23:23:51,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 372 transitions, 5024 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 23:23:51,535 INFO L231 Difference]: Finished difference. Result has 182 places, 340 transitions, 4282 flow [2024-06-27 23:23:51,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4050, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4282, PETRI_PLACES=182, PETRI_TRANSITIONS=340} [2024-06-27 23:23:51,535 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 138 predicate places. [2024-06-27 23:23:51,535 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 340 transitions, 4282 flow [2024-06-27 23:23:51,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:51,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:51,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:51,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 23:23:51,536 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:51,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:51,536 INFO L85 PathProgramCache]: Analyzing trace with hash -564604385, now seen corresponding path program 4 times [2024-06-27 23:23:51,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:51,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024614139] [2024-06-27 23:23:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:51,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:53,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:53,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024614139] [2024-06-27 23:23:53,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024614139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:53,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:53,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:23:53,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228233601] [2024-06-27 23:23:53,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:53,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:23:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:53,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:23:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:23:53,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:23:53,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 340 transitions, 4282 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:53,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:53,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:23:53,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:54,587 INFO L124 PetriNetUnfolderBase]: 2766/4328 cut-off events. [2024-06-27 23:23:54,587 INFO L125 PetriNetUnfolderBase]: For 100254/100258 co-relation queries the response was YES. [2024-06-27 23:23:54,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26941 conditions, 4328 events. 2766/4328 cut-off events. For 100254/100258 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 23587 event pairs, 677 based on Foata normal form. 8/4334 useless extension candidates. Maximal degree in co-relation 26871. Up to 3685 conditions per place. [2024-06-27 23:23:54,624 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 279 selfloop transitions, 91 changer transitions 0/375 dead transitions. [2024-06-27 23:23:54,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 375 transitions, 5251 flow [2024-06-27 23:23:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:23:54,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:23:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-27 23:23:54,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43953488372093025 [2024-06-27 23:23:54,625 INFO L175 Difference]: Start difference. First operand has 182 places, 340 transitions, 4282 flow. Second operand 10 states and 189 transitions. [2024-06-27 23:23:54,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 375 transitions, 5251 flow [2024-06-27 23:23:54,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 375 transitions, 5077 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 23:23:54,745 INFO L231 Difference]: Finished difference. Result has 186 places, 342 transitions, 4342 flow [2024-06-27 23:23:54,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4108, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4342, PETRI_PLACES=186, PETRI_TRANSITIONS=342} [2024-06-27 23:23:54,746 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 142 predicate places. [2024-06-27 23:23:54,746 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 342 transitions, 4342 flow [2024-06-27 23:23:54,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:54,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:54,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:54,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 23:23:54,747 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:54,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:54,747 INFO L85 PathProgramCache]: Analyzing trace with hash -390517497, now seen corresponding path program 1 times [2024-06-27 23:23:54,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:54,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252862154] [2024-06-27 23:23:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:54,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:55,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:55,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252862154] [2024-06-27 23:23:55,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252862154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:55,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:55,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:23:55,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765139475] [2024-06-27 23:23:55,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:55,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:23:55,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:55,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:23:55,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:23:55,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:23:55,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 342 transitions, 4342 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:55,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:55,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:23:55,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:56,773 INFO L124 PetriNetUnfolderBase]: 2624/4151 cut-off events. [2024-06-27 23:23:56,774 INFO L125 PetriNetUnfolderBase]: For 106341/106393 co-relation queries the response was YES. [2024-06-27 23:23:56,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26446 conditions, 4151 events. 2624/4151 cut-off events. For 106341/106393 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 22873 event pairs, 637 based on Foata normal form. 53/4177 useless extension candidates. Maximal degree in co-relation 26375. Up to 3676 conditions per place. [2024-06-27 23:23:56,804 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 265 selfloop transitions, 60 changer transitions 0/367 dead transitions. [2024-06-27 23:23:56,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 367 transitions, 5160 flow [2024-06-27 23:23:56,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:23:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:23:56,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 23:23:56,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-27 23:23:56,805 INFO L175 Difference]: Start difference. First operand has 186 places, 342 transitions, 4342 flow. Second operand 8 states and 151 transitions. [2024-06-27 23:23:56,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 367 transitions, 5160 flow [2024-06-27 23:23:56,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 367 transitions, 4938 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 23:23:56,941 INFO L231 Difference]: Finished difference. Result has 188 places, 351 transitions, 4407 flow [2024-06-27 23:23:56,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4128, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4407, PETRI_PLACES=188, PETRI_TRANSITIONS=351} [2024-06-27 23:23:56,941 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 144 predicate places. [2024-06-27 23:23:56,941 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 351 transitions, 4407 flow [2024-06-27 23:23:56,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:56,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:56,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:56,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 23:23:56,942 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:56,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash -390159013, now seen corresponding path program 1 times [2024-06-27 23:23:56,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:56,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825783874] [2024-06-27 23:23:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:56,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:23:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:23:58,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:23:58,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825783874] [2024-06-27 23:23:58,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825783874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:23:58,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:23:58,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:23:58,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937889833] [2024-06-27 23:23:58,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:23:58,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:23:58,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:23:58,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:23:58,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:23:58,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:23:58,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 351 transitions, 4407 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:58,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:23:58,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:23:58,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:23:59,615 INFO L124 PetriNetUnfolderBase]: 2542/4038 cut-off events. [2024-06-27 23:23:59,615 INFO L125 PetriNetUnfolderBase]: For 113744/113833 co-relation queries the response was YES. [2024-06-27 23:23:59,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26268 conditions, 4038 events. 2542/4038 cut-off events. For 113744/113833 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 22370 event pairs, 650 based on Foata normal form. 91/4089 useless extension candidates. Maximal degree in co-relation 26194. Up to 3436 conditions per place. [2024-06-27 23:23:59,646 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 240 selfloop transitions, 67 changer transitions 0/371 dead transitions. [2024-06-27 23:23:59,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 371 transitions, 5213 flow [2024-06-27 23:23:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:23:59,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:23:59,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 23:23:59,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563953488372093 [2024-06-27 23:23:59,647 INFO L175 Difference]: Start difference. First operand has 188 places, 351 transitions, 4407 flow. Second operand 8 states and 157 transitions. [2024-06-27 23:23:59,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 371 transitions, 5213 flow [2024-06-27 23:23:59,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 371 transitions, 5141 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 23:23:59,754 INFO L231 Difference]: Finished difference. Result has 194 places, 358 transitions, 4601 flow [2024-06-27 23:23:59,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4337, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4601, PETRI_PLACES=194, PETRI_TRANSITIONS=358} [2024-06-27 23:23:59,754 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 150 predicate places. [2024-06-27 23:23:59,754 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 358 transitions, 4601 flow [2024-06-27 23:23:59,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:23:59,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:23:59,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:23:59,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 23:23:59,755 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:23:59,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:23:59,756 INFO L85 PathProgramCache]: Analyzing trace with hash -390159447, now seen corresponding path program 2 times [2024-06-27 23:23:59,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:23:59,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845466417] [2024-06-27 23:23:59,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:23:59,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:23:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:00,875 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 23:24:00,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:00,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845466417] [2024-06-27 23:24:00,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845466417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:00,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:00,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:00,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577981532] [2024-06-27 23:24:00,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:00,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:00,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:00,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:00,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:00,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:24:00,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 358 transitions, 4601 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:00,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:00,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:24:00,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:01,798 INFO L124 PetriNetUnfolderBase]: 2655/4195 cut-off events. [2024-06-27 23:24:01,798 INFO L125 PetriNetUnfolderBase]: For 121109/121163 co-relation queries the response was YES. [2024-06-27 23:24:01,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28121 conditions, 4195 events. 2655/4195 cut-off events. For 121109/121163 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 23164 event pairs, 634 based on Foata normal form. 55/4223 useless extension candidates. Maximal degree in co-relation 28044. Up to 3693 conditions per place. [2024-06-27 23:24:01,835 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 270 selfloop transitions, 62 changer transitions 0/374 dead transitions. [2024-06-27 23:24:01,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 374 transitions, 5363 flow [2024-06-27 23:24:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:24:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:24:01,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 23:24:01,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331395348837209 [2024-06-27 23:24:01,836 INFO L175 Difference]: Start difference. First operand has 194 places, 358 transitions, 4601 flow. Second operand 8 states and 149 transitions. [2024-06-27 23:24:01,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 374 transitions, 5363 flow [2024-06-27 23:24:01,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 374 transitions, 5261 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 23:24:01,980 INFO L231 Difference]: Finished difference. Result has 198 places, 361 transitions, 4676 flow [2024-06-27 23:24:01,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4499, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4676, PETRI_PLACES=198, PETRI_TRANSITIONS=361} [2024-06-27 23:24:01,980 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 154 predicate places. [2024-06-27 23:24:01,981 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 361 transitions, 4676 flow [2024-06-27 23:24:01,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:01,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:01,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:01,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 23:24:01,981 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:01,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:01,982 INFO L85 PathProgramCache]: Analyzing trace with hash 427007135, now seen corresponding path program 5 times [2024-06-27 23:24:01,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:01,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775331660] [2024-06-27 23:24:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:01,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:03,875 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 23:24:03,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:03,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775331660] [2024-06-27 23:24:03,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775331660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:03,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:03,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:24:03,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710395768] [2024-06-27 23:24:03,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:03,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:24:03,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:03,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:24:03,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:24:03,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:24:03,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 361 transitions, 4676 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:03,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:03,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:24:03,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:05,330 INFO L124 PetriNetUnfolderBase]: 2839/4433 cut-off events. [2024-06-27 23:24:05,330 INFO L125 PetriNetUnfolderBase]: For 129466/129472 co-relation queries the response was YES. [2024-06-27 23:24:05,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30114 conditions, 4433 events. 2839/4433 cut-off events. For 129466/129472 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 24189 event pairs, 665 based on Foata normal form. 10/4442 useless extension candidates. Maximal degree in co-relation 30035. Up to 3883 conditions per place. [2024-06-27 23:24:05,364 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 289 selfloop transitions, 99 changer transitions 0/393 dead transitions. [2024-06-27 23:24:05,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 393 transitions, 5665 flow [2024-06-27 23:24:05,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:05,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 23:24:05,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42790697674418604 [2024-06-27 23:24:05,366 INFO L175 Difference]: Start difference. First operand has 198 places, 361 transitions, 4676 flow. Second operand 10 states and 184 transitions. [2024-06-27 23:24:05,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 393 transitions, 5665 flow [2024-06-27 23:24:05,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 393 transitions, 5532 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 23:24:05,501 INFO L231 Difference]: Finished difference. Result has 203 places, 366 transitions, 4830 flow [2024-06-27 23:24:05,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4543, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4830, PETRI_PLACES=203, PETRI_TRANSITIONS=366} [2024-06-27 23:24:05,501 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 159 predicate places. [2024-06-27 23:24:05,502 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 366 transitions, 4830 flow [2024-06-27 23:24:05,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:05,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:05,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:05,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 23:24:05,502 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:05,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:05,503 INFO L85 PathProgramCache]: Analyzing trace with hash -647663907, now seen corresponding path program 6 times [2024-06-27 23:24:05,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:05,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964361341] [2024-06-27 23:24:05,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:05,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:07,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:07,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964361341] [2024-06-27 23:24:07,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964361341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:07,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:07,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:24:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758374171] [2024-06-27 23:24:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:07,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:24:07,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:24:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:24:07,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:24:07,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 366 transitions, 4830 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:07,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:07,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:24:07,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:08,690 INFO L124 PetriNetUnfolderBase]: 2867/4481 cut-off events. [2024-06-27 23:24:08,691 INFO L125 PetriNetUnfolderBase]: For 138575/138581 co-relation queries the response was YES. [2024-06-27 23:24:08,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30913 conditions, 4481 events. 2867/4481 cut-off events. For 138575/138581 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 24604 event pairs, 670 based on Foata normal form. 10/4490 useless extension candidates. Maximal degree in co-relation 30833. Up to 3922 conditions per place. [2024-06-27 23:24:08,736 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 301 selfloop transitions, 95 changer transitions 0/401 dead transitions. [2024-06-27 23:24:08,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 401 transitions, 5878 flow [2024-06-27 23:24:08,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:08,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 23:24:08,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325581395348837 [2024-06-27 23:24:08,738 INFO L175 Difference]: Start difference. First operand has 203 places, 366 transitions, 4830 flow. Second operand 10 states and 186 transitions. [2024-06-27 23:24:08,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 401 transitions, 5878 flow [2024-06-27 23:24:08,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 401 transitions, 5642 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 23:24:08,910 INFO L231 Difference]: Finished difference. Result has 206 places, 371 transitions, 4883 flow [2024-06-27 23:24:08,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4605, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4883, PETRI_PLACES=206, PETRI_TRANSITIONS=371} [2024-06-27 23:24:08,910 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 162 predicate places. [2024-06-27 23:24:08,911 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 371 transitions, 4883 flow [2024-06-27 23:24:08,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:08,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:08,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:08,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 23:24:08,911 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:08,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:08,911 INFO L85 PathProgramCache]: Analyzing trace with hash -97450793, now seen corresponding path program 7 times [2024-06-27 23:24:08,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:08,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612112627] [2024-06-27 23:24:08,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:08,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:10,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612112627] [2024-06-27 23:24:10,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612112627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:10,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:10,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:24:10,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120204438] [2024-06-27 23:24:10,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:10,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:24:10,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:10,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:24:10,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:24:10,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:24:10,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 371 transitions, 4883 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:10,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:10,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:24:10,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:12,051 INFO L124 PetriNetUnfolderBase]: 2884/4508 cut-off events. [2024-06-27 23:24:12,051 INFO L125 PetriNetUnfolderBase]: For 147536/147542 co-relation queries the response was YES. [2024-06-27 23:24:12,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31223 conditions, 4508 events. 2884/4508 cut-off events. For 147536/147542 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 24773 event pairs, 670 based on Foata normal form. 10/4517 useless extension candidates. Maximal degree in co-relation 31145. Up to 3905 conditions per place. [2024-06-27 23:24:12,086 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 293 selfloop transitions, 104 changer transitions 0/402 dead transitions. [2024-06-27 23:24:12,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 402 transitions, 5884 flow [2024-06-27 23:24:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:12,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 23:24:12,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325581395348837 [2024-06-27 23:24:12,088 INFO L175 Difference]: Start difference. First operand has 206 places, 371 transitions, 4883 flow. Second operand 10 states and 186 transitions. [2024-06-27 23:24:12,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 402 transitions, 5884 flow [2024-06-27 23:24:12,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 402 transitions, 5709 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 23:24:12,255 INFO L231 Difference]: Finished difference. Result has 211 places, 373 transitions, 4983 flow [2024-06-27 23:24:12,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4708, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4983, PETRI_PLACES=211, PETRI_TRANSITIONS=373} [2024-06-27 23:24:12,256 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 167 predicate places. [2024-06-27 23:24:12,256 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 373 transitions, 4983 flow [2024-06-27 23:24:12,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:12,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:12,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:12,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 23:24:12,257 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:12,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:12,257 INFO L85 PathProgramCache]: Analyzing trace with hash -388790037, now seen corresponding path program 8 times [2024-06-27 23:24:12,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:12,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892967559] [2024-06-27 23:24:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:12,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:14,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:14,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892967559] [2024-06-27 23:24:14,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892967559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:14,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:14,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:24:14,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026881292] [2024-06-27 23:24:14,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:14,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:24:14,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:14,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:24:14,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:24:14,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:24:14,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 373 transitions, 4983 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:14,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:14,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:24:14,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:15,305 INFO L124 PetriNetUnfolderBase]: 2901/4535 cut-off events. [2024-06-27 23:24:15,305 INFO L125 PetriNetUnfolderBase]: For 156860/156866 co-relation queries the response was YES. [2024-06-27 23:24:15,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31804 conditions, 4535 events. 2901/4535 cut-off events. For 156860/156866 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 24980 event pairs, 611 based on Foata normal form. 10/4544 useless extension candidates. Maximal degree in co-relation 31726. Up to 3648 conditions per place. [2024-06-27 23:24:15,348 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 279 selfloop transitions, 124 changer transitions 0/408 dead transitions. [2024-06-27 23:24:15,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 408 transitions, 6171 flow [2024-06-27 23:24:15,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:15,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 23:24:15,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4372093023255814 [2024-06-27 23:24:15,350 INFO L175 Difference]: Start difference. First operand has 211 places, 373 transitions, 4983 flow. Second operand 10 states and 188 transitions. [2024-06-27 23:24:15,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 408 transitions, 6171 flow [2024-06-27 23:24:15,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 408 transitions, 5914 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 23:24:15,529 INFO L231 Difference]: Finished difference. Result has 213 places, 377 transitions, 5105 flow [2024-06-27 23:24:15,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4726, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5105, PETRI_PLACES=213, PETRI_TRANSITIONS=377} [2024-06-27 23:24:15,530 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 169 predicate places. [2024-06-27 23:24:15,530 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 377 transitions, 5105 flow [2024-06-27 23:24:15,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:15,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:15,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:15,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 23:24:15,531 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:15,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:15,531 INFO L85 PathProgramCache]: Analyzing trace with hash -353030781, now seen corresponding path program 9 times [2024-06-27 23:24:15,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:15,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418088024] [2024-06-27 23:24:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:15,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:17,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:17,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:17,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418088024] [2024-06-27 23:24:17,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418088024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:17,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:17,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:24:17,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390368610] [2024-06-27 23:24:17,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:17,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:24:17,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:17,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:24:17,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:24:17,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:24:17,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 377 transitions, 5105 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:17,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:17,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:24:17,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:18,614 INFO L124 PetriNetUnfolderBase]: 2918/4562 cut-off events. [2024-06-27 23:24:18,614 INFO L125 PetriNetUnfolderBase]: For 166004/166010 co-relation queries the response was YES. [2024-06-27 23:24:18,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32415 conditions, 4562 events. 2918/4562 cut-off events. For 166004/166010 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 25125 event pairs, 680 based on Foata normal form. 10/4571 useless extension candidates. Maximal degree in co-relation 32336. Up to 4003 conditions per place. [2024-06-27 23:24:18,654 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 305 selfloop transitions, 97 changer transitions 0/407 dead transitions. [2024-06-27 23:24:18,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 407 transitions, 6118 flow [2024-06-27 23:24:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:18,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 23:24:18,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43023255813953487 [2024-06-27 23:24:18,656 INFO L175 Difference]: Start difference. First operand has 213 places, 377 transitions, 5105 flow. Second operand 10 states and 185 transitions. [2024-06-27 23:24:18,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 407 transitions, 6118 flow [2024-06-27 23:24:18,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 407 transitions, 5933 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 23:24:18,836 INFO L231 Difference]: Finished difference. Result has 217 places, 379 transitions, 5189 flow [2024-06-27 23:24:18,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4922, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5189, PETRI_PLACES=217, PETRI_TRANSITIONS=379} [2024-06-27 23:24:18,837 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 173 predicate places. [2024-06-27 23:24:18,837 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 379 transitions, 5189 flow [2024-06-27 23:24:18,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:18,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:18,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:18,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 23:24:18,837 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:18,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:18,837 INFO L85 PathProgramCache]: Analyzing trace with hash -345612171, now seen corresponding path program 10 times [2024-06-27 23:24:18,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:18,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359771077] [2024-06-27 23:24:18,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:18,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:20,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:20,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:20,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359771077] [2024-06-27 23:24:20,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359771077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:20,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:20,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:24:20,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990145723] [2024-06-27 23:24:20,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:20,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:24:20,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:20,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:24:20,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:24:20,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:24:20,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 379 transitions, 5189 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:20,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:20,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:24:20,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:21,852 INFO L124 PetriNetUnfolderBase]: 2935/4589 cut-off events. [2024-06-27 23:24:21,852 INFO L125 PetriNetUnfolderBase]: For 174100/174106 co-relation queries the response was YES. [2024-06-27 23:24:21,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32988 conditions, 4589 events. 2935/4589 cut-off events. For 174100/174106 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 25278 event pairs, 675 based on Foata normal form. 10/4598 useless extension candidates. Maximal degree in co-relation 32907. Up to 3968 conditions per place. [2024-06-27 23:24:21,894 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 308 selfloop transitions, 99 changer transitions 0/412 dead transitions. [2024-06-27 23:24:21,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 412 transitions, 6239 flow [2024-06-27 23:24:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-27 23:24:21,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43488372093023253 [2024-06-27 23:24:21,895 INFO L175 Difference]: Start difference. First operand has 217 places, 379 transitions, 5189 flow. Second operand 10 states and 187 transitions. [2024-06-27 23:24:21,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 412 transitions, 6239 flow [2024-06-27 23:24:22,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 412 transitions, 5959 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 23:24:22,151 INFO L231 Difference]: Finished difference. Result has 219 places, 381 transitions, 5184 flow [2024-06-27 23:24:22,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4909, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5184, PETRI_PLACES=219, PETRI_TRANSITIONS=381} [2024-06-27 23:24:22,152 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 175 predicate places. [2024-06-27 23:24:22,152 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 381 transitions, 5184 flow [2024-06-27 23:24:22,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:22,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:22,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:22,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 23:24:22,153 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:22,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash -146163685, now seen corresponding path program 2 times [2024-06-27 23:24:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:22,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613575185] [2024-06-27 23:24:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:22,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:24,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:24,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613575185] [2024-06-27 23:24:24,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613575185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:24,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:24,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:24:24,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118434379] [2024-06-27 23:24:24,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:24,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:24:24,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:24,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:24:24,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:24:24,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:24:24,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 381 transitions, 5184 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:24,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:24,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:24:24,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:25,226 INFO L124 PetriNetUnfolderBase]: 2688/4284 cut-off events. [2024-06-27 23:24:25,227 INFO L125 PetriNetUnfolderBase]: For 181767/181860 co-relation queries the response was YES. [2024-06-27 23:24:25,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31008 conditions, 4284 events. 2688/4284 cut-off events. For 181767/181860 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 24197 event pairs, 680 based on Foata normal form. 94/4331 useless extension candidates. Maximal degree in co-relation 30926. Up to 3547 conditions per place. [2024-06-27 23:24:25,269 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 244 selfloop transitions, 88 changer transitions 0/406 dead transitions. [2024-06-27 23:24:25,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 406 transitions, 6204 flow [2024-06-27 23:24:25,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:24:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:24:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 23:24:25,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2024-06-27 23:24:25,271 INFO L175 Difference]: Start difference. First operand has 219 places, 381 transitions, 5184 flow. Second operand 8 states and 156 transitions. [2024-06-27 23:24:25,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 406 transitions, 6204 flow [2024-06-27 23:24:25,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 406 transitions, 5951 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 23:24:25,471 INFO L231 Difference]: Finished difference. Result has 221 places, 395 transitions, 5365 flow [2024-06-27 23:24:25,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=4931, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5365, PETRI_PLACES=221, PETRI_TRANSITIONS=395} [2024-06-27 23:24:25,472 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 177 predicate places. [2024-06-27 23:24:25,472 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 395 transitions, 5365 flow [2024-06-27 23:24:25,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:25,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:25,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:25,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 23:24:25,473 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:25,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:25,473 INFO L85 PathProgramCache]: Analyzing trace with hash 23147867, now seen corresponding path program 3 times [2024-06-27 23:24:25,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:25,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531088418] [2024-06-27 23:24:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:25,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:26,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:26,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531088418] [2024-06-27 23:24:26,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531088418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:26,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:26,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254348552] [2024-06-27 23:24:26,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:26,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:27,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:24:27,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 395 transitions, 5365 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:27,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:27,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:24:27,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:27,982 INFO L124 PetriNetUnfolderBase]: 2711/4317 cut-off events. [2024-06-27 23:24:27,982 INFO L125 PetriNetUnfolderBase]: For 192928/193021 co-relation queries the response was YES. [2024-06-27 23:24:28,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32156 conditions, 4317 events. 2711/4317 cut-off events. For 192928/193021 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 24375 event pairs, 680 based on Foata normal form. 94/4364 useless extension candidates. Maximal degree in co-relation 32071. Up to 3617 conditions per place. [2024-06-27 23:24:28,027 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 257 selfloop transitions, 82 changer transitions 0/413 dead transitions. [2024-06-27 23:24:28,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 413 transitions, 6357 flow [2024-06-27 23:24:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:24:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:24:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 23:24:28,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-27 23:24:28,028 INFO L175 Difference]: Start difference. First operand has 221 places, 395 transitions, 5365 flow. Second operand 8 states and 155 transitions. [2024-06-27 23:24:28,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 413 transitions, 6357 flow [2024-06-27 23:24:28,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 413 transitions, 6217 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-27 23:24:28,250 INFO L231 Difference]: Finished difference. Result has 226 places, 402 transitions, 5533 flow [2024-06-27 23:24:28,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5241, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5533, PETRI_PLACES=226, PETRI_TRANSITIONS=402} [2024-06-27 23:24:28,251 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 182 predicate places. [2024-06-27 23:24:28,251 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 402 transitions, 5533 flow [2024-06-27 23:24:28,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:28,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:28,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:28,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 23:24:28,252 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:28,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:28,252 INFO L85 PathProgramCache]: Analyzing trace with hash -841673557, now seen corresponding path program 3 times [2024-06-27 23:24:28,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:28,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487552385] [2024-06-27 23:24:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:28,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:29,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:29,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487552385] [2024-06-27 23:24:29,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487552385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:29,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:29,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:29,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585720799] [2024-06-27 23:24:29,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:29,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:29,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:29,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:29,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:29,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:24:29,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 402 transitions, 5533 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:29,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:29,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:24:29,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:30,459 INFO L124 PetriNetUnfolderBase]: 2842/4479 cut-off events. [2024-06-27 23:24:30,459 INFO L125 PetriNetUnfolderBase]: For 200631/200686 co-relation queries the response was YES. [2024-06-27 23:24:30,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33639 conditions, 4479 events. 2842/4479 cut-off events. For 200631/200686 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 24957 event pairs, 667 based on Foata normal form. 55/4494 useless extension candidates. Maximal degree in co-relation 33552. Up to 3931 conditions per place. [2024-06-27 23:24:30,498 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 304 selfloop transitions, 72 changer transitions 0/418 dead transitions. [2024-06-27 23:24:30,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 418 transitions, 6509 flow [2024-06-27 23:24:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:24:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:24:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 23:24:30,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42441860465116277 [2024-06-27 23:24:30,500 INFO L175 Difference]: Start difference. First operand has 226 places, 402 transitions, 5533 flow. Second operand 8 states and 146 transitions. [2024-06-27 23:24:30,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 418 transitions, 6509 flow [2024-06-27 23:24:30,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 418 transitions, 6313 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 23:24:30,780 INFO L231 Difference]: Finished difference. Result has 229 places, 408 transitions, 5605 flow [2024-06-27 23:24:30,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5337, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5605, PETRI_PLACES=229, PETRI_TRANSITIONS=408} [2024-06-27 23:24:30,781 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 185 predicate places. [2024-06-27 23:24:30,781 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 408 transitions, 5605 flow [2024-06-27 23:24:30,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:30,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:30,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:30,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 23:24:30,781 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:30,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:30,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1983376881, now seen corresponding path program 11 times [2024-06-27 23:24:30,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:30,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545618300] [2024-06-27 23:24:30,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:30,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:30,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:32,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:32,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545618300] [2024-06-27 23:24:32,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545618300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:32,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:32,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:24:32,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182942340] [2024-06-27 23:24:32,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:32,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:24:32,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:32,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:24:32,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:24:32,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:24:32,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 408 transitions, 5605 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:32,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:32,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:24:32,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:33,633 INFO L124 PetriNetUnfolderBase]: 3142/4902 cut-off events. [2024-06-27 23:24:33,633 INFO L125 PetriNetUnfolderBase]: For 213140/213144 co-relation queries the response was YES. [2024-06-27 23:24:33,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36459 conditions, 4902 events. 3142/4902 cut-off events. For 213140/213144 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 27346 event pairs, 691 based on Foata normal form. 8/4908 useless extension candidates. Maximal degree in co-relation 36371. Up to 4264 conditions per place. [2024-06-27 23:24:33,687 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 341 selfloop transitions, 147 changer transitions 0/493 dead transitions. [2024-06-27 23:24:33,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 493 transitions, 7355 flow [2024-06-27 23:24:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-27 23:24:33,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-27 23:24:33,688 INFO L175 Difference]: Start difference. First operand has 229 places, 408 transitions, 5605 flow. Second operand 10 states and 197 transitions. [2024-06-27 23:24:33,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 493 transitions, 7355 flow [2024-06-27 23:24:33,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 493 transitions, 7225 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 23:24:33,972 INFO L231 Difference]: Finished difference. Result has 237 places, 454 transitions, 6429 flow [2024-06-27 23:24:33,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=5493, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6429, PETRI_PLACES=237, PETRI_TRANSITIONS=454} [2024-06-27 23:24:33,973 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 193 predicate places. [2024-06-27 23:24:33,973 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 454 transitions, 6429 flow [2024-06-27 23:24:33,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:33,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:33,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:33,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 23:24:33,974 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:33,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:33,974 INFO L85 PathProgramCache]: Analyzing trace with hash 415460513, now seen corresponding path program 4 times [2024-06-27 23:24:33,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:33,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891377244] [2024-06-27 23:24:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:34,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:34,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891377244] [2024-06-27 23:24:34,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891377244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:34,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:34,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:34,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541596858] [2024-06-27 23:24:34,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:34,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:34,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:24:34,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 454 transitions, 6429 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:34,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:34,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:24:34,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:35,944 INFO L124 PetriNetUnfolderBase]: 2997/4718 cut-off events. [2024-06-27 23:24:35,944 INFO L125 PetriNetUnfolderBase]: For 223424/223497 co-relation queries the response was YES. [2024-06-27 23:24:35,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36303 conditions, 4718 events. 2997/4718 cut-off events. For 223424/223497 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 26496 event pairs, 648 based on Foata normal form. 74/4758 useless extension candidates. Maximal degree in co-relation 36211. Up to 4205 conditions per place. [2024-06-27 23:24:35,994 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 360 selfloop transitions, 86 changer transitions 0/488 dead transitions. [2024-06-27 23:24:35,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 488 transitions, 7566 flow [2024-06-27 23:24:35,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:24:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:24:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-27 23:24:35,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-27 23:24:35,996 INFO L175 Difference]: Start difference. First operand has 237 places, 454 transitions, 6429 flow. Second operand 8 states and 158 transitions. [2024-06-27 23:24:35,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 488 transitions, 7566 flow [2024-06-27 23:24:36,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 488 transitions, 7163 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 23:24:36,410 INFO L231 Difference]: Finished difference. Result has 240 places, 465 transitions, 6403 flow [2024-06-27 23:24:36,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6034, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6403, PETRI_PLACES=240, PETRI_TRANSITIONS=465} [2024-06-27 23:24:36,411 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 196 predicate places. [2024-06-27 23:24:36,411 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 465 transitions, 6403 flow [2024-06-27 23:24:36,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:36,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:36,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:36,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 23:24:36,412 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:36,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:36,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1077842097, now seen corresponding path program 12 times [2024-06-27 23:24:36,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:36,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467234255] [2024-06-27 23:24:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:36,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:37,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:37,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467234255] [2024-06-27 23:24:37,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467234255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:37,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:37,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:24:37,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941596651] [2024-06-27 23:24:37,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:37,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:24:37,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:37,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:24:37,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:24:38,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:24:38,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 465 transitions, 6403 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:38,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:38,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:24:38,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:39,393 INFO L124 PetriNetUnfolderBase]: 3314/5174 cut-off events. [2024-06-27 23:24:39,393 INFO L125 PetriNetUnfolderBase]: For 231521/231525 co-relation queries the response was YES. [2024-06-27 23:24:39,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38708 conditions, 5174 events. 3314/5174 cut-off events. For 231521/231525 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 29240 event pairs, 697 based on Foata normal form. 8/5180 useless extension candidates. Maximal degree in co-relation 38615. Up to 4448 conditions per place. [2024-06-27 23:24:39,442 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 359 selfloop transitions, 187 changer transitions 0/551 dead transitions. [2024-06-27 23:24:39,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 551 transitions, 8356 flow [2024-06-27 23:24:39,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-27 23:24:39,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-27 23:24:39,444 INFO L175 Difference]: Start difference. First operand has 240 places, 465 transitions, 6403 flow. Second operand 10 states and 197 transitions. [2024-06-27 23:24:39,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 551 transitions, 8356 flow [2024-06-27 23:24:39,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 551 transitions, 8188 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 23:24:39,790 INFO L231 Difference]: Finished difference. Result has 248 places, 516 transitions, 7397 flow [2024-06-27 23:24:39,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=6259, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7397, PETRI_PLACES=248, PETRI_TRANSITIONS=516} [2024-06-27 23:24:39,790 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 204 predicate places. [2024-06-27 23:24:39,790 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 516 transitions, 7397 flow [2024-06-27 23:24:39,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:39,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:39,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:39,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 23:24:39,791 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:39,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:39,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1989130289, now seen corresponding path program 13 times [2024-06-27 23:24:39,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:39,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086609511] [2024-06-27 23:24:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:39,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:41,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:41,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086609511] [2024-06-27 23:24:41,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086609511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:41,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:41,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:24:41,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788292099] [2024-06-27 23:24:41,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:41,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:24:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:41,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:24:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:24:41,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:24:41,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 516 transitions, 7397 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:41,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:41,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:24:41,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:42,881 INFO L124 PetriNetUnfolderBase]: 3381/5280 cut-off events. [2024-06-27 23:24:42,881 INFO L125 PetriNetUnfolderBase]: For 245444/245448 co-relation queries the response was YES. [2024-06-27 23:24:42,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40206 conditions, 5280 events. 3381/5280 cut-off events. For 245444/245448 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 29886 event pairs, 690 based on Foata normal form. 8/5286 useless extension candidates. Maximal degree in co-relation 40110. Up to 4543 conditions per place. [2024-06-27 23:24:42,936 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 371 selfloop transitions, 195 changer transitions 0/571 dead transitions. [2024-06-27 23:24:42,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 571 transitions, 9030 flow [2024-06-27 23:24:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:42,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-27 23:24:42,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-27 23:24:42,937 INFO L175 Difference]: Start difference. First operand has 248 places, 516 transitions, 7397 flow. Second operand 10 states and 197 transitions. [2024-06-27 23:24:42,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 571 transitions, 9030 flow [2024-06-27 23:24:43,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 571 transitions, 8778 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 23:24:43,312 INFO L231 Difference]: Finished difference. Result has 255 places, 535 transitions, 7876 flow [2024-06-27 23:24:43,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7159, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7876, PETRI_PLACES=255, PETRI_TRANSITIONS=535} [2024-06-27 23:24:43,313 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 211 predicate places. [2024-06-27 23:24:43,313 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 535 transitions, 7876 flow [2024-06-27 23:24:43,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:43,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:43,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:43,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 23:24:43,314 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:43,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:43,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2137211231, now seen corresponding path program 14 times [2024-06-27 23:24:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:43,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713930728] [2024-06-27 23:24:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:43,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:44,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:44,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713930728] [2024-06-27 23:24:44,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713930728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:44,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:44,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:24:44,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933999509] [2024-06-27 23:24:44,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:44,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:24:44,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:44,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:24:44,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:24:45,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:24:45,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 535 transitions, 7876 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:45,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:45,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:24:45,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:46,634 INFO L124 PetriNetUnfolderBase]: 3409/5324 cut-off events. [2024-06-27 23:24:46,635 INFO L125 PetriNetUnfolderBase]: For 258228/258232 co-relation queries the response was YES. [2024-06-27 23:24:46,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40811 conditions, 5324 events. 3409/5324 cut-off events. For 258228/258232 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 30266 event pairs, 695 based on Foata normal form. 8/5330 useless extension candidates. Maximal degree in co-relation 40714. Up to 4587 conditions per place. [2024-06-27 23:24:46,692 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 368 selfloop transitions, 201 changer transitions 0/574 dead transitions. [2024-06-27 23:24:46,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 574 transitions, 9302 flow [2024-06-27 23:24:46,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:46,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-27 23:24:46,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-27 23:24:46,693 INFO L175 Difference]: Start difference. First operand has 255 places, 535 transitions, 7876 flow. Second operand 10 states and 196 transitions. [2024-06-27 23:24:46,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 574 transitions, 9302 flow [2024-06-27 23:24:47,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 574 transitions, 8892 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-27 23:24:47,173 INFO L231 Difference]: Finished difference. Result has 260 places, 539 transitions, 7981 flow [2024-06-27 23:24:47,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7466, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7981, PETRI_PLACES=260, PETRI_TRANSITIONS=539} [2024-06-27 23:24:47,174 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 216 predicate places. [2024-06-27 23:24:47,174 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 539 transitions, 7981 flow [2024-06-27 23:24:47,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:47,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:47,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:47,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 23:24:47,175 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:47,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:47,176 INFO L85 PathProgramCache]: Analyzing trace with hash -575912169, now seen corresponding path program 15 times [2024-06-27 23:24:47,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:47,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604028588] [2024-06-27 23:24:47,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:47,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:48,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:48,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604028588] [2024-06-27 23:24:48,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604028588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:48,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:48,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:24:48,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217079193] [2024-06-27 23:24:48,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:48,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:24:48,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:48,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:24:48,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:24:48,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:24:48,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 539 transitions, 7981 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:48,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:48,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:24:48,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:50,260 INFO L124 PetriNetUnfolderBase]: 3412/5329 cut-off events. [2024-06-27 23:24:50,260 INFO L125 PetriNetUnfolderBase]: For 264154/264158 co-relation queries the response was YES. [2024-06-27 23:24:50,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40703 conditions, 5329 events. 3412/5329 cut-off events. For 264154/264158 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 30240 event pairs, 688 based on Foata normal form. 8/5335 useless extension candidates. Maximal degree in co-relation 40605. Up to 4428 conditions per place. [2024-06-27 23:24:50,310 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 351 selfloop transitions, 221 changer transitions 0/577 dead transitions. [2024-06-27 23:24:50,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 577 transitions, 9336 flow [2024-06-27 23:24:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:24:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:24:50,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-27 23:24:50,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45813953488372094 [2024-06-27 23:24:50,312 INFO L175 Difference]: Start difference. First operand has 260 places, 539 transitions, 7981 flow. Second operand 10 states and 197 transitions. [2024-06-27 23:24:50,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 577 transitions, 9336 flow [2024-06-27 23:24:50,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 577 transitions, 8865 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-27 23:24:50,692 INFO L231 Difference]: Finished difference. Result has 264 places, 541 transitions, 7980 flow [2024-06-27 23:24:50,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7512, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7980, PETRI_PLACES=264, PETRI_TRANSITIONS=541} [2024-06-27 23:24:50,693 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 220 predicate places. [2024-06-27 23:24:50,693 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 541 transitions, 7980 flow [2024-06-27 23:24:50,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:50,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:50,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:50,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 23:24:50,694 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:50,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:50,694 INFO L85 PathProgramCache]: Analyzing trace with hash 806381273, now seen corresponding path program 5 times [2024-06-27 23:24:50,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:50,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999375019] [2024-06-27 23:24:50,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:50,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:51,690 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 23:24:51,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:51,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999375019] [2024-06-27 23:24:51,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999375019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:51,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:51,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:51,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300057368] [2024-06-27 23:24:51,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:51,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:51,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:51,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:51,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:51,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:24:51,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 541 transitions, 7980 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:51,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:51,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:24:51,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:52,932 INFO L124 PetriNetUnfolderBase]: 3273/5142 cut-off events. [2024-06-27 23:24:52,932 INFO L125 PetriNetUnfolderBase]: For 274454/274516 co-relation queries the response was YES. [2024-06-27 23:24:52,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39984 conditions, 5142 events. 3273/5142 cut-off events. For 274454/274516 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 29415 event pairs, 665 based on Foata normal form. 64/5172 useless extension candidates. Maximal degree in co-relation 39885. Up to 4324 conditions per place. [2024-06-27 23:24:52,989 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 334 selfloop transitions, 200 changer transitions 0/576 dead transitions. [2024-06-27 23:24:52,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 576 transitions, 9334 flow [2024-06-27 23:24:52,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:24:52,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:24:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-27 23:24:52,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738372093023256 [2024-06-27 23:24:52,999 INFO L175 Difference]: Start difference. First operand has 264 places, 541 transitions, 7980 flow. Second operand 8 states and 163 transitions. [2024-06-27 23:24:53,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 576 transitions, 9334 flow [2024-06-27 23:24:53,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 576 transitions, 8755 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 23:24:53,568 INFO L231 Difference]: Finished difference. Result has 263 places, 553 transitions, 8041 flow [2024-06-27 23:24:53,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7401, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8041, PETRI_PLACES=263, PETRI_TRANSITIONS=553} [2024-06-27 23:24:53,569 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 219 predicate places. [2024-06-27 23:24:53,569 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 553 transitions, 8041 flow [2024-06-27 23:24:53,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:53,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:53,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:53,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 23:24:53,570 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:53,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:53,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1327783913, now seen corresponding path program 6 times [2024-06-27 23:24:53,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:53,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109795507] [2024-06-27 23:24:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:53,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:54,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:54,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109795507] [2024-06-27 23:24:54,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109795507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:54,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:54,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:24:54,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239628104] [2024-06-27 23:24:54,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:54,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:24:54,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:54,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:24:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:24:54,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:24:54,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 553 transitions, 8041 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:54,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:54,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:24:54,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:55,866 INFO L124 PetriNetUnfolderBase]: 3276/5166 cut-off events. [2024-06-27 23:24:55,866 INFO L125 PetriNetUnfolderBase]: For 281367/281433 co-relation queries the response was YES. [2024-06-27 23:24:55,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40017 conditions, 5166 events. 3276/5166 cut-off events. For 281367/281433 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 29608 event pairs, 664 based on Foata normal form. 66/5195 useless extension candidates. Maximal degree in co-relation 39917. Up to 4549 conditions per place. [2024-06-27 23:24:55,928 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 414 selfloop transitions, 120 changer transitions 0/576 dead transitions. [2024-06-27 23:24:55,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 576 transitions, 9228 flow [2024-06-27 23:24:55,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:24:55,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:24:55,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-27 23:24:55,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45058139534883723 [2024-06-27 23:24:55,929 INFO L175 Difference]: Start difference. First operand has 263 places, 553 transitions, 8041 flow. Second operand 8 states and 155 transitions. [2024-06-27 23:24:55,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 576 transitions, 9228 flow [2024-06-27 23:24:56,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 576 transitions, 8761 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-27 23:24:56,339 INFO L231 Difference]: Finished difference. Result has 265 places, 558 transitions, 7873 flow [2024-06-27 23:24:56,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7574, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7873, PETRI_PLACES=265, PETRI_TRANSITIONS=558} [2024-06-27 23:24:56,340 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 221 predicate places. [2024-06-27 23:24:56,340 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 558 transitions, 7873 flow [2024-06-27 23:24:56,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:56,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:56,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:56,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 23:24:56,341 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:56,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:56,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1327784347, now seen corresponding path program 4 times [2024-06-27 23:24:56,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:56,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886138300] [2024-06-27 23:24:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:56,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:24:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:24:57,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:24:57,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886138300] [2024-06-27 23:24:57,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886138300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:24:57,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:24:57,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:24:57,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849674626] [2024-06-27 23:24:57,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:24:57,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:24:57,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:24:57,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:24:57,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:24:58,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:24:58,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 558 transitions, 7873 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:58,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:24:58,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:24:58,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:24:59,173 INFO L124 PetriNetUnfolderBase]: 3090/4952 cut-off events. [2024-06-27 23:24:59,174 INFO L125 PetriNetUnfolderBase]: For 283926/284034 co-relation queries the response was YES. [2024-06-27 23:24:59,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37978 conditions, 4952 events. 3090/4952 cut-off events. For 283926/284034 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 29219 event pairs, 698 based on Foata normal form. 110/5018 useless extension candidates. Maximal degree in co-relation 37877. Up to 4102 conditions per place. [2024-06-27 23:24:59,228 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 380 selfloop transitions, 77 changer transitions 0/585 dead transitions. [2024-06-27 23:24:59,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 585 transitions, 9058 flow [2024-06-27 23:24:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:24:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:24:59,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 165 transitions. [2024-06-27 23:24:59,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796511627906977 [2024-06-27 23:24:59,230 INFO L175 Difference]: Start difference. First operand has 265 places, 558 transitions, 7873 flow. Second operand 8 states and 165 transitions. [2024-06-27 23:24:59,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 585 transitions, 9058 flow [2024-06-27 23:24:59,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 585 transitions, 8788 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 23:24:59,771 INFO L231 Difference]: Finished difference. Result has 269 places, 566 transitions, 7909 flow [2024-06-27 23:24:59,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7603, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7909, PETRI_PLACES=269, PETRI_TRANSITIONS=566} [2024-06-27 23:24:59,772 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 225 predicate places. [2024-06-27 23:24:59,772 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 566 transitions, 7909 flow [2024-06-27 23:24:59,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:24:59,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:24:59,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:24:59,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 23:24:59,772 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:24:59,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:24:59,773 INFO L85 PathProgramCache]: Analyzing trace with hash -847856383, now seen corresponding path program 1 times [2024-06-27 23:24:59,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:24:59,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902467893] [2024-06-27 23:24:59,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:24:59,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:24:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:01,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:01,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902467893] [2024-06-27 23:25:01,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902467893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:01,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:01,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:25:01,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32546888] [2024-06-27 23:25:01,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:01,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:25:01,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:01,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:25:01,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:25:01,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:25:01,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 566 transitions, 7909 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:01,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:01,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:25:01,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:02,512 INFO L124 PetriNetUnfolderBase]: 3189/5120 cut-off events. [2024-06-27 23:25:02,512 INFO L125 PetriNetUnfolderBase]: For 289325/289349 co-relation queries the response was YES. [2024-06-27 23:25:02,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39011 conditions, 5120 events. 3189/5120 cut-off events. For 289325/289349 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 30396 event pairs, 849 based on Foata normal form. 24/5131 useless extension candidates. Maximal degree in co-relation 38908. Up to 4355 conditions per place. [2024-06-27 23:25:02,562 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 465 selfloop transitions, 21 changer transitions 0/584 dead transitions. [2024-06-27 23:25:02,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 584 transitions, 9022 flow [2024-06-27 23:25:02,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:25:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:25:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-27 23:25:02,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438953488372093 [2024-06-27 23:25:02,563 INFO L175 Difference]: Start difference. First operand has 269 places, 566 transitions, 7909 flow. Second operand 8 states and 151 transitions. [2024-06-27 23:25:02,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 584 transitions, 9022 flow [2024-06-27 23:25:02,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 584 transitions, 8844 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 23:25:02,961 INFO L231 Difference]: Finished difference. Result has 272 places, 572 transitions, 7882 flow [2024-06-27 23:25:02,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7734, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7882, PETRI_PLACES=272, PETRI_TRANSITIONS=572} [2024-06-27 23:25:02,962 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 228 predicate places. [2024-06-27 23:25:02,962 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 572 transitions, 7882 flow [2024-06-27 23:25:02,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:02,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:02,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:02,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 23:25:02,963 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:02,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:02,963 INFO L85 PathProgramCache]: Analyzing trace with hash 23393697, now seen corresponding path program 2 times [2024-06-27 23:25:02,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:02,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186221728] [2024-06-27 23:25:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:02,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:04,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:04,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:04,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186221728] [2024-06-27 23:25:04,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186221728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:04,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:04,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 23:25:04,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170773417] [2024-06-27 23:25:04,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:04,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 23:25:04,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:04,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 23:25:04,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 23:25:04,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:25:04,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 572 transitions, 7882 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:04,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:04,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:25:04,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:05,640 INFO L124 PetriNetUnfolderBase]: 3186/5114 cut-off events. [2024-06-27 23:25:05,640 INFO L125 PetriNetUnfolderBase]: For 297356/297380 co-relation queries the response was YES. [2024-06-27 23:25:05,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39243 conditions, 5114 events. 3186/5114 cut-off events. For 297356/297380 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 30377 event pairs, 857 based on Foata normal form. 24/5124 useless extension candidates. Maximal degree in co-relation 39138. Up to 4342 conditions per place. [2024-06-27 23:25:05,700 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 461 selfloop transitions, 28 changer transitions 0/587 dead transitions. [2024-06-27 23:25:05,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 587 transitions, 8984 flow [2024-06-27 23:25:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:25:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:25:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-27 23:25:05,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4584717607973422 [2024-06-27 23:25:05,702 INFO L175 Difference]: Start difference. First operand has 272 places, 572 transitions, 7882 flow. Second operand 7 states and 138 transitions. [2024-06-27 23:25:05,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 587 transitions, 8984 flow [2024-06-27 23:25:06,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 587 transitions, 8916 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 23:25:06,231 INFO L231 Difference]: Finished difference. Result has 276 places, 578 transitions, 7986 flow [2024-06-27 23:25:06,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7814, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7986, PETRI_PLACES=276, PETRI_TRANSITIONS=578} [2024-06-27 23:25:06,232 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 232 predicate places. [2024-06-27 23:25:06,232 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 578 transitions, 7986 flow [2024-06-27 23:25:06,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:06,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:06,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:06,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 23:25:06,233 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:06,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:06,234 INFO L85 PathProgramCache]: Analyzing trace with hash -311767492, now seen corresponding path program 1 times [2024-06-27 23:25:06,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:06,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782953672] [2024-06-27 23:25:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:06,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:08,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:08,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782953672] [2024-06-27 23:25:08,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782953672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:08,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:08,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:08,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581964494] [2024-06-27 23:25:08,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:08,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:08,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:08,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:08,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:08,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:25:08,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 578 transitions, 7986 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:08,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:08,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:25:08,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:09,971 INFO L124 PetriNetUnfolderBase]: 3551/5574 cut-off events. [2024-06-27 23:25:09,971 INFO L125 PetriNetUnfolderBase]: For 334985/334991 co-relation queries the response was YES. [2024-06-27 23:25:10,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43206 conditions, 5574 events. 3551/5574 cut-off events. For 334985/334991 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 32291 event pairs, 682 based on Foata normal form. 20/5593 useless extension candidates. Maximal degree in co-relation 43099. Up to 4829 conditions per place. [2024-06-27 23:25:10,033 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 488 selfloop transitions, 122 changer transitions 0/615 dead transitions. [2024-06-27 23:25:10,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 615 transitions, 9430 flow [2024-06-27 23:25:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 23:25:10,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 23:25:10,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-27 23:25:10,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627906976744186 [2024-06-27 23:25:10,034 INFO L175 Difference]: Start difference. First operand has 276 places, 578 transitions, 7986 flow. Second operand 10 states and 199 transitions. [2024-06-27 23:25:10,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 615 transitions, 9430 flow [2024-06-27 23:25:10,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 615 transitions, 9336 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-27 23:25:10,559 INFO L231 Difference]: Finished difference. Result has 283 places, 579 transitions, 8195 flow [2024-06-27 23:25:10,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7892, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8195, PETRI_PLACES=283, PETRI_TRANSITIONS=579} [2024-06-27 23:25:10,560 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 239 predicate places. [2024-06-27 23:25:10,560 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 579 transitions, 8195 flow [2024-06-27 23:25:10,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:10,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:10,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:10,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 23:25:10,561 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:10,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:10,561 INFO L85 PathProgramCache]: Analyzing trace with hash 897630992, now seen corresponding path program 2 times [2024-06-27 23:25:10,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:10,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574185580] [2024-06-27 23:25:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:10,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:12,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:12,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574185580] [2024-06-27 23:25:12,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574185580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:12,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:12,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:12,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908038066] [2024-06-27 23:25:12,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:12,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:12,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:12,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:12,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:12,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:25:12,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 579 transitions, 8195 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:12,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:12,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:25:12,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:14,404 INFO L124 PetriNetUnfolderBase]: 3627/5712 cut-off events. [2024-06-27 23:25:14,405 INFO L125 PetriNetUnfolderBase]: For 351571/351577 co-relation queries the response was YES. [2024-06-27 23:25:14,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44694 conditions, 5712 events. 3627/5712 cut-off events. For 351571/351577 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 33378 event pairs, 680 based on Foata normal form. 16/5727 useless extension candidates. Maximal degree in co-relation 44586. Up to 4831 conditions per place. [2024-06-27 23:25:14,461 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 497 selfloop transitions, 125 changer transitions 0/627 dead transitions. [2024-06-27 23:25:14,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 627 transitions, 9757 flow [2024-06-27 23:25:14,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:14,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-27 23:25:14,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2024-06-27 23:25:14,465 INFO L175 Difference]: Start difference. First operand has 283 places, 579 transitions, 8195 flow. Second operand 11 states and 220 transitions. [2024-06-27 23:25:14,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 627 transitions, 9757 flow [2024-06-27 23:25:15,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 627 transitions, 9471 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 23:25:15,049 INFO L231 Difference]: Finished difference. Result has 286 places, 582 transitions, 8251 flow [2024-06-27 23:25:15,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7909, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8251, PETRI_PLACES=286, PETRI_TRANSITIONS=582} [2024-06-27 23:25:15,049 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 242 predicate places. [2024-06-27 23:25:15,050 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 582 transitions, 8251 flow [2024-06-27 23:25:15,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:15,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:15,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:15,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 23:25:15,050 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:15,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:15,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1015963820, now seen corresponding path program 1 times [2024-06-27 23:25:15,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:15,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476552230] [2024-06-27 23:25:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:15,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:16,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:16,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476552230] [2024-06-27 23:25:16,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476552230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:16,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:16,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:16,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642928770] [2024-06-27 23:25:16,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:16,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:16,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:16,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:16,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:17,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:25:17,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 582 transitions, 8251 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:17,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:17,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:25:17,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:18,759 INFO L124 PetriNetUnfolderBase]: 3702/5812 cut-off events. [2024-06-27 23:25:18,759 INFO L125 PetriNetUnfolderBase]: For 353504/353510 co-relation queries the response was YES. [2024-06-27 23:25:18,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45473 conditions, 5812 events. 3702/5812 cut-off events. For 353504/353510 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 34083 event pairs, 725 based on Foata normal form. 10/5820 useless extension candidates. Maximal degree in co-relation 45364. Up to 4727 conditions per place. [2024-06-27 23:25:18,824 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 412 selfloop transitions, 215 changer transitions 0/632 dead transitions. [2024-06-27 23:25:18,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 632 transitions, 9870 flow [2024-06-27 23:25:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:18,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 23:25:18,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4439746300211416 [2024-06-27 23:25:18,826 INFO L175 Difference]: Start difference. First operand has 286 places, 582 transitions, 8251 flow. Second operand 11 states and 210 transitions. [2024-06-27 23:25:18,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 632 transitions, 9870 flow [2024-06-27 23:25:19,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 632 transitions, 9612 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 23:25:19,448 INFO L231 Difference]: Finished difference. Result has 290 places, 598 transitions, 8619 flow [2024-06-27 23:25:19,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=7993, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8619, PETRI_PLACES=290, PETRI_TRANSITIONS=598} [2024-06-27 23:25:19,449 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 246 predicate places. [2024-06-27 23:25:19,449 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 598 transitions, 8619 flow [2024-06-27 23:25:19,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:19,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:19,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:19,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 23:25:19,450 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:19,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:19,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1187859064, now seen corresponding path program 2 times [2024-06-27 23:25:19,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:19,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527185981] [2024-06-27 23:25:19,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:19,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:21,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:21,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527185981] [2024-06-27 23:25:21,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527185981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:21,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:21,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:21,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306698320] [2024-06-27 23:25:21,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:21,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:21,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:21,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:21,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:21,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:25:21,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 598 transitions, 8619 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:21,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:21,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:25:21,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:23,170 INFO L124 PetriNetUnfolderBase]: 3752/5902 cut-off events. [2024-06-27 23:25:23,170 INFO L125 PetriNetUnfolderBase]: For 364837/364843 co-relation queries the response was YES. [2024-06-27 23:25:23,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46679 conditions, 5902 events. 3752/5902 cut-off events. For 364837/364843 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 34795 event pairs, 725 based on Foata normal form. 10/5910 useless extension candidates. Maximal degree in co-relation 46568. Up to 4788 conditions per place. [2024-06-27 23:25:23,235 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 440 selfloop transitions, 200 changer transitions 0/645 dead transitions. [2024-06-27 23:25:23,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 645 transitions, 10295 flow [2024-06-27 23:25:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 23:25:23,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4439746300211416 [2024-06-27 23:25:23,237 INFO L175 Difference]: Start difference. First operand has 290 places, 598 transitions, 8619 flow. Second operand 11 states and 210 transitions. [2024-06-27 23:25:23,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 645 transitions, 10295 flow [2024-06-27 23:25:23,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 645 transitions, 9880 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 23:25:23,947 INFO L231 Difference]: Finished difference. Result has 297 places, 609 transitions, 8793 flow [2024-06-27 23:25:23,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8222, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8793, PETRI_PLACES=297, PETRI_TRANSITIONS=609} [2024-06-27 23:25:23,948 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 253 predicate places. [2024-06-27 23:25:23,948 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 609 transitions, 8793 flow [2024-06-27 23:25:23,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:23,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:23,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:23,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 23:25:23,949 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:23,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:23,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1188098074, now seen corresponding path program 3 times [2024-06-27 23:25:23,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:23,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730680212] [2024-06-27 23:25:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:23,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:25,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:25,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:25,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730680212] [2024-06-27 23:25:25,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730680212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:25,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:25,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:25,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218775338] [2024-06-27 23:25:25,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:25,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:25,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:25,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:25,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:26,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:25:26,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 609 transitions, 8793 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:26,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:26,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:25:26,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:27,695 INFO L124 PetriNetUnfolderBase]: 3794/5973 cut-off events. [2024-06-27 23:25:27,695 INFO L125 PetriNetUnfolderBase]: For 388115/388121 co-relation queries the response was YES. [2024-06-27 23:25:27,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47824 conditions, 5973 events. 3794/5973 cut-off events. For 388115/388121 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 35374 event pairs, 722 based on Foata normal form. 10/5981 useless extension candidates. Maximal degree in co-relation 47711. Up to 4733 conditions per place. [2024-06-27 23:25:27,765 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 439 selfloop transitions, 208 changer transitions 0/652 dead transitions. [2024-06-27 23:25:27,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 652 transitions, 10632 flow [2024-06-27 23:25:27,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:27,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:27,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-27 23:25:27,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503171247357294 [2024-06-27 23:25:27,767 INFO L175 Difference]: Start difference. First operand has 297 places, 609 transitions, 8793 flow. Second operand 11 states and 213 transitions. [2024-06-27 23:25:27,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 652 transitions, 10632 flow [2024-06-27 23:25:28,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 652 transitions, 10292 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-27 23:25:28,327 INFO L231 Difference]: Finished difference. Result has 303 places, 613 transitions, 8998 flow [2024-06-27 23:25:28,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8457, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8998, PETRI_PLACES=303, PETRI_TRANSITIONS=613} [2024-06-27 23:25:28,328 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 259 predicate places. [2024-06-27 23:25:28,328 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 613 transitions, 8998 flow [2024-06-27 23:25:28,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:28,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:28,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:28,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 23:25:28,329 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:28,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:28,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1181602954, now seen corresponding path program 4 times [2024-06-27 23:25:28,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:28,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916854535] [2024-06-27 23:25:28,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:28,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:30,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:30,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916854535] [2024-06-27 23:25:30,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916854535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:30,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:30,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:30,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666546664] [2024-06-27 23:25:30,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:30,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:30,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:30,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:30,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:30,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:25:30,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 613 transitions, 8998 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:30,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:30,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:25:30,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:31,953 INFO L124 PetriNetUnfolderBase]: 3786/5951 cut-off events. [2024-06-27 23:25:31,953 INFO L125 PetriNetUnfolderBase]: For 394280/394286 co-relation queries the response was YES. [2024-06-27 23:25:31,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47728 conditions, 5951 events. 3786/5951 cut-off events. For 394280/394286 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 35080 event pairs, 725 based on Foata normal form. 10/5959 useless extension candidates. Maximal degree in co-relation 47614. Up to 4842 conditions per place. [2024-06-27 23:25:32,021 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 445 selfloop transitions, 199 changer transitions 0/649 dead transitions. [2024-06-27 23:25:32,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 649 transitions, 10529 flow [2024-06-27 23:25:32,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:32,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 23:25:32,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44608879492600423 [2024-06-27 23:25:32,023 INFO L175 Difference]: Start difference. First operand has 303 places, 613 transitions, 8998 flow. Second operand 11 states and 211 transitions. [2024-06-27 23:25:32,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 649 transitions, 10529 flow [2024-06-27 23:25:32,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 649 transitions, 10208 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 23:25:32,710 INFO L231 Difference]: Finished difference. Result has 307 places, 613 transitions, 9082 flow [2024-06-27 23:25:32,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8677, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9082, PETRI_PLACES=307, PETRI_TRANSITIONS=613} [2024-06-27 23:25:32,711 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 263 predicate places. [2024-06-27 23:25:32,711 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 613 transitions, 9082 flow [2024-06-27 23:25:32,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:32,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:32,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:32,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 23:25:32,712 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:32,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:32,712 INFO L85 PathProgramCache]: Analyzing trace with hash -331436150, now seen corresponding path program 5 times [2024-06-27 23:25:32,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:32,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038651852] [2024-06-27 23:25:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:32,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:34,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:34,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038651852] [2024-06-27 23:25:34,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038651852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:34,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:34,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:34,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118881676] [2024-06-27 23:25:34,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:34,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:34,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:34,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:34,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:34,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:25:34,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 613 transitions, 9082 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:34,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:34,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:25:34,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:36,646 INFO L124 PetriNetUnfolderBase]: 3836/6033 cut-off events. [2024-06-27 23:25:36,646 INFO L125 PetriNetUnfolderBase]: For 406564/406570 co-relation queries the response was YES. [2024-06-27 23:25:36,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48779 conditions, 6033 events. 3836/6033 cut-off events. For 406564/406570 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 35716 event pairs, 733 based on Foata normal form. 10/6041 useless extension candidates. Maximal degree in co-relation 48663. Up to 4900 conditions per place. [2024-06-27 23:25:36,872 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 450 selfloop transitions, 207 changer transitions 0/662 dead transitions. [2024-06-27 23:25:36,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 662 transitions, 10857 flow [2024-06-27 23:25:36,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:36,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 23:25:36,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4439746300211416 [2024-06-27 23:25:36,873 INFO L175 Difference]: Start difference. First operand has 307 places, 613 transitions, 9082 flow. Second operand 11 states and 210 transitions. [2024-06-27 23:25:36,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 662 transitions, 10857 flow [2024-06-27 23:25:37,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 662 transitions, 10388 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 23:25:37,553 INFO L231 Difference]: Finished difference. Result has 309 places, 624 transitions, 9257 flow [2024-06-27 23:25:37,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8629, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9257, PETRI_PLACES=309, PETRI_TRANSITIONS=624} [2024-06-27 23:25:37,553 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 265 predicate places. [2024-06-27 23:25:37,553 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 624 transitions, 9257 flow [2024-06-27 23:25:37,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:37,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:37,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:37,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 23:25:37,554 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:37,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash -559337300, now seen corresponding path program 6 times [2024-06-27 23:25:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:37,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282246836] [2024-06-27 23:25:37,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:37,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:39,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:39,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282246836] [2024-06-27 23:25:39,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282246836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:39,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:39,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:39,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998920634] [2024-06-27 23:25:39,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:39,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:39,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:39,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:39,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:39,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:25:39,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 624 transitions, 9257 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:39,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:39,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:25:39,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:41,238 INFO L124 PetriNetUnfolderBase]: 3864/6076 cut-off events. [2024-06-27 23:25:41,238 INFO L125 PetriNetUnfolderBase]: For 422464/422470 co-relation queries the response was YES. [2024-06-27 23:25:41,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49721 conditions, 6076 events. 3864/6076 cut-off events. For 422464/422470 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 35963 event pairs, 736 based on Foata normal form. 10/6084 useless extension candidates. Maximal degree in co-relation 49604. Up to 4939 conditions per place. [2024-06-27 23:25:41,312 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 455 selfloop transitions, 208 changer transitions 0/668 dead transitions. [2024-06-27 23:25:41,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 668 transitions, 10991 flow [2024-06-27 23:25:41,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 23:25:41,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44608879492600423 [2024-06-27 23:25:41,314 INFO L175 Difference]: Start difference. First operand has 309 places, 624 transitions, 9257 flow. Second operand 11 states and 211 transitions. [2024-06-27 23:25:41,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 668 transitions, 10991 flow [2024-06-27 23:25:42,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 668 transitions, 10659 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 23:25:42,008 INFO L231 Difference]: Finished difference. Result has 315 places, 629 transitions, 9455 flow [2024-06-27 23:25:42,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8934, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9455, PETRI_PLACES=315, PETRI_TRANSITIONS=629} [2024-06-27 23:25:42,009 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 271 predicate places. [2024-06-27 23:25:42,009 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 629 transitions, 9455 flow [2024-06-27 23:25:42,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:42,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:42,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:42,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 23:25:42,010 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:42,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:42,010 INFO L85 PathProgramCache]: Analyzing trace with hash -331197140, now seen corresponding path program 7 times [2024-06-27 23:25:42,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:42,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445124223] [2024-06-27 23:25:42,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:42,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:43,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:43,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445124223] [2024-06-27 23:25:43,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445124223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:43,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:43,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:43,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105914733] [2024-06-27 23:25:43,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:43,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:43,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:43,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:43,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:44,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:25:44,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 629 transitions, 9455 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:44,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:44,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:25:44,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:46,035 INFO L124 PetriNetUnfolderBase]: 3881/6103 cut-off events. [2024-06-27 23:25:46,035 INFO L125 PetriNetUnfolderBase]: For 436104/436110 co-relation queries the response was YES. [2024-06-27 23:25:46,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50042 conditions, 6103 events. 3881/6103 cut-off events. For 436104/436110 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 36180 event pairs, 738 based on Foata normal form. 10/6111 useless extension candidates. Maximal degree in co-relation 49924. Up to 4903 conditions per place. [2024-06-27 23:25:46,104 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 454 selfloop transitions, 212 changer transitions 0/671 dead transitions. [2024-06-27 23:25:46,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 671 transitions, 11159 flow [2024-06-27 23:25:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:46,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 23:25:46,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44820295983086683 [2024-06-27 23:25:46,106 INFO L175 Difference]: Start difference. First operand has 315 places, 629 transitions, 9455 flow. Second operand 11 states and 212 transitions. [2024-06-27 23:25:46,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 671 transitions, 11159 flow [2024-06-27 23:25:46,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 671 transitions, 10672 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 23:25:47,005 INFO L231 Difference]: Finished difference. Result has 318 places, 631 transitions, 9472 flow [2024-06-27 23:25:47,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8968, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9472, PETRI_PLACES=318, PETRI_TRANSITIONS=631} [2024-06-27 23:25:47,006 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 274 predicate places. [2024-06-27 23:25:47,006 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 631 transitions, 9472 flow [2024-06-27 23:25:47,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:47,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:47,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:47,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 23:25:47,007 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:47,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:47,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1511052242, now seen corresponding path program 8 times [2024-06-27 23:25:47,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:47,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562415651] [2024-06-27 23:25:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:47,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:48,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:48,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562415651] [2024-06-27 23:25:48,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562415651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:48,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:48,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:48,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774639909] [2024-06-27 23:25:48,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:48,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:48,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:48,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:48,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:49,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:25:49,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 631 transitions, 9472 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:49,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:49,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:25:49,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:50,835 INFO L124 PetriNetUnfolderBase]: 3923/6174 cut-off events. [2024-06-27 23:25:50,835 INFO L125 PetriNetUnfolderBase]: For 458140/458146 co-relation queries the response was YES. [2024-06-27 23:25:50,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51075 conditions, 6174 events. 3923/6174 cut-off events. For 458140/458146 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 36782 event pairs, 733 based on Foata normal form. 10/6182 useless extension candidates. Maximal degree in co-relation 50957. Up to 4648 conditions per place. [2024-06-27 23:25:50,914 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 438 selfloop transitions, 234 changer transitions 0/677 dead transitions. [2024-06-27 23:25:50,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 677 transitions, 11454 flow [2024-06-27 23:25:50,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-27 23:25:50,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452431289640592 [2024-06-27 23:25:50,915 INFO L175 Difference]: Start difference. First operand has 318 places, 631 transitions, 9472 flow. Second operand 11 states and 214 transitions. [2024-06-27 23:25:50,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 677 transitions, 11454 flow [2024-06-27 23:25:51,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 677 transitions, 10970 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 23:25:51,795 INFO L231 Difference]: Finished difference. Result has 320 places, 635 transitions, 9612 flow [2024-06-27 23:25:51,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=8988, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9612, PETRI_PLACES=320, PETRI_TRANSITIONS=635} [2024-06-27 23:25:51,796 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 276 predicate places. [2024-06-27 23:25:51,796 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 635 transitions, 9612 flow [2024-06-27 23:25:51,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:51,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:51,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:51,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 23:25:51,797 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:51,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash -553081190, now seen corresponding path program 9 times [2024-06-27 23:25:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:51,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348511339] [2024-06-27 23:25:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:51,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:53,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:53,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348511339] [2024-06-27 23:25:53,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348511339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:53,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:53,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:53,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150442446] [2024-06-27 23:25:53,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:53,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:53,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:53,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:53,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:53,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:25:53,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 635 transitions, 9612 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:53,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:53,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:25:53,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:25:55,759 INFO L124 PetriNetUnfolderBase]: 3940/6206 cut-off events. [2024-06-27 23:25:55,759 INFO L125 PetriNetUnfolderBase]: For 472069/472075 co-relation queries the response was YES. [2024-06-27 23:25:55,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51723 conditions, 6206 events. 3940/6206 cut-off events. For 472069/472075 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 37005 event pairs, 758 based on Foata normal form. 10/6214 useless extension candidates. Maximal degree in co-relation 51604. Up to 5059 conditions per place. [2024-06-27 23:25:55,825 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 469 selfloop transitions, 204 changer transitions 0/678 dead transitions. [2024-06-27 23:25:55,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 678 transitions, 11371 flow [2024-06-27 23:25:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:25:55,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:25:55,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 23:25:55,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44820295983086683 [2024-06-27 23:25:55,827 INFO L175 Difference]: Start difference. First operand has 320 places, 635 transitions, 9612 flow. Second operand 11 states and 212 transitions. [2024-06-27 23:25:55,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 678 transitions, 11371 flow [2024-06-27 23:25:56,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 678 transitions, 11057 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-27 23:25:56,633 INFO L231 Difference]: Finished difference. Result has 324 places, 637 transitions, 9793 flow [2024-06-27 23:25:56,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9300, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9793, PETRI_PLACES=324, PETRI_TRANSITIONS=637} [2024-06-27 23:25:56,633 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 280 predicate places. [2024-06-27 23:25:56,634 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 637 transitions, 9793 flow [2024-06-27 23:25:56,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:56,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:25:56,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:25:56,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 23:25:56,634 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:25:56,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:25:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash -552842180, now seen corresponding path program 10 times [2024-06-27 23:25:56,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:25:56,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014702477] [2024-06-27 23:25:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:25:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:25:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:25:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:25:58,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:25:58,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014702477] [2024-06-27 23:25:58,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014702477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:25:58,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:25:58,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:25:58,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252338794] [2024-06-27 23:25:58,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:25:58,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:25:58,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:25:58,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:25:58,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:25:58,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:25:58,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 637 transitions, 9793 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:25:58,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:25:58,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:25:58,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:00,642 INFO L124 PetriNetUnfolderBase]: 3932/6184 cut-off events. [2024-06-27 23:26:00,642 INFO L125 PetriNetUnfolderBase]: For 477061/477067 co-relation queries the response was YES. [2024-06-27 23:26:00,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51835 conditions, 6184 events. 3932/6184 cut-off events. For 477061/477067 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 36738 event pairs, 746 based on Foata normal form. 10/6192 useless extension candidates. Maximal degree in co-relation 51714. Up to 4966 conditions per place. [2024-06-27 23:26:00,719 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 466 selfloop transitions, 208 changer transitions 0/679 dead transitions. [2024-06-27 23:26:00,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 679 transitions, 11480 flow [2024-06-27 23:26:00,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-27 23:26:00,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503171247357294 [2024-06-27 23:26:00,722 INFO L175 Difference]: Start difference. First operand has 324 places, 637 transitions, 9793 flow. Second operand 11 states and 213 transitions. [2024-06-27 23:26:00,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 679 transitions, 11480 flow [2024-06-27 23:26:01,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 679 transitions, 10957 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 23:26:01,589 INFO L231 Difference]: Finished difference. Result has 327 places, 637 transitions, 9694 flow [2024-06-27 23:26:01,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9270, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9694, PETRI_PLACES=327, PETRI_TRANSITIONS=637} [2024-06-27 23:26:01,590 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 283 predicate places. [2024-06-27 23:26:01,590 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 637 transitions, 9694 flow [2024-06-27 23:26:01,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:01,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:01,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:01,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 23:26:01,590 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:01,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash 778532372, now seen corresponding path program 1 times [2024-06-27 23:26:01,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:01,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486040914] [2024-06-27 23:26:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:01,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:02,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:02,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486040914] [2024-06-27 23:26:02,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486040914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:02,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:02,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:26:02,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606848280] [2024-06-27 23:26:02,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:02,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:26:02,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:02,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:26:02,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:26:02,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:26:02,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 637 transitions, 9694 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:02,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:02,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:26:02,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:04,157 INFO L124 PetriNetUnfolderBase]: 3753/5946 cut-off events. [2024-06-27 23:26:04,157 INFO L125 PetriNetUnfolderBase]: For 488091/488165 co-relation queries the response was YES. [2024-06-27 23:26:04,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50675 conditions, 5946 events. 3753/5946 cut-off events. For 488091/488165 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 35598 event pairs, 673 based on Foata normal form. 76/5977 useless extension candidates. Maximal degree in co-relation 50553. Up to 5208 conditions per place. [2024-06-27 23:26:04,234 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 494 selfloop transitions, 130 changer transitions 0/668 dead transitions. [2024-06-27 23:26:04,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 668 transitions, 11207 flow [2024-06-27 23:26:04,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:26:04,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:26:04,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 23:26:04,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:26:04,236 INFO L175 Difference]: Start difference. First operand has 327 places, 637 transitions, 9694 flow. Second operand 9 states and 172 transitions. [2024-06-27 23:26:04,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 668 transitions, 11207 flow [2024-06-27 23:26:05,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 668 transitions, 10513 flow, removed 20 selfloop flow, removed 11 redundant places. [2024-06-27 23:26:05,066 INFO L231 Difference]: Finished difference. Result has 327 places, 648 transitions, 9553 flow [2024-06-27 23:26:05,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9018, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9553, PETRI_PLACES=327, PETRI_TRANSITIONS=648} [2024-06-27 23:26:05,066 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 283 predicate places. [2024-06-27 23:26:05,066 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 648 transitions, 9553 flow [2024-06-27 23:26:05,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:05,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:05,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:05,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 23:26:05,067 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:05,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:05,067 INFO L85 PathProgramCache]: Analyzing trace with hash -754708889, now seen corresponding path program 1 times [2024-06-27 23:26:05,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:05,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940510511] [2024-06-27 23:26:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:05,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:06,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:06,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940510511] [2024-06-27 23:26:06,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940510511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:06,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:06,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:26:06,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909345433] [2024-06-27 23:26:06,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:06,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:26:06,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:06,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:26:06,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:26:06,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:26:06,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 648 transitions, 9553 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:06,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:06,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:26:06,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:08,353 INFO L124 PetriNetUnfolderBase]: 3778/5968 cut-off events. [2024-06-27 23:26:08,353 INFO L125 PetriNetUnfolderBase]: For 505737/505806 co-relation queries the response was YES. [2024-06-27 23:26:08,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50913 conditions, 5968 events. 3778/5968 cut-off events. For 505737/505806 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 35752 event pairs, 698 based on Foata normal form. 71/5992 useless extension candidates. Maximal degree in co-relation 50789. Up to 5068 conditions per place. [2024-06-27 23:26:08,431 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 427 selfloop transitions, 204 changer transitions 0/675 dead transitions. [2024-06-27 23:26:08,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 675 transitions, 11177 flow [2024-06-27 23:26:08,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:26:08,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:26:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 23:26:08,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 23:26:08,432 INFO L175 Difference]: Start difference. First operand has 327 places, 648 transitions, 9553 flow. Second operand 9 states and 172 transitions. [2024-06-27 23:26:08,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 675 transitions, 11177 flow [2024-06-27 23:26:09,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 675 transitions, 11018 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 23:26:09,164 INFO L231 Difference]: Finished difference. Result has 333 places, 658 transitions, 10055 flow [2024-06-27 23:26:09,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9396, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10055, PETRI_PLACES=333, PETRI_TRANSITIONS=658} [2024-06-27 23:26:09,165 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 289 predicate places. [2024-06-27 23:26:09,165 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 658 transitions, 10055 flow [2024-06-27 23:26:09,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:09,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:09,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:09,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 23:26:09,165 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:09,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:09,166 INFO L85 PathProgramCache]: Analyzing trace with hash 778860662, now seen corresponding path program 2 times [2024-06-27 23:26:09,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:09,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107108109] [2024-06-27 23:26:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:09,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:10,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:10,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107108109] [2024-06-27 23:26:10,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107108109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:10,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:10,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:26:10,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974049516] [2024-06-27 23:26:10,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:10,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:26:10,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:26:10,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:26:10,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:26:10,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 658 transitions, 10055 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:10,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:10,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:26:10,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:11,941 INFO L124 PetriNetUnfolderBase]: 3804/6007 cut-off events. [2024-06-27 23:26:11,941 INFO L125 PetriNetUnfolderBase]: For 526173/526246 co-relation queries the response was YES. [2024-06-27 23:26:11,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52459 conditions, 6007 events. 3804/6007 cut-off events. For 526173/526246 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 35964 event pairs, 698 based on Foata normal form. 76/6030 useless extension candidates. Maximal degree in co-relation 52332. Up to 4746 conditions per place. [2024-06-27 23:26:12,186 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 416 selfloop transitions, 223 changer transitions 0/683 dead transitions. [2024-06-27 23:26:12,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 683 transitions, 11699 flow [2024-06-27 23:26:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:26:12,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:26:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 23:26:12,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2024-06-27 23:26:12,188 INFO L175 Difference]: Start difference. First operand has 333 places, 658 transitions, 10055 flow. Second operand 9 states and 176 transitions. [2024-06-27 23:26:12,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 683 transitions, 11699 flow [2024-06-27 23:26:12,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 683 transitions, 11413 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 23:26:12,992 INFO L231 Difference]: Finished difference. Result has 337 places, 665 transitions, 10396 flow [2024-06-27 23:26:12,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=9769, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10396, PETRI_PLACES=337, PETRI_TRANSITIONS=665} [2024-06-27 23:26:12,993 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 293 predicate places. [2024-06-27 23:26:12,993 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 665 transitions, 10396 flow [2024-06-27 23:26:12,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:12,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:12,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:12,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 23:26:12,994 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:12,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash -975363060, now seen corresponding path program 3 times [2024-06-27 23:26:12,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:12,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054980581] [2024-06-27 23:26:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:12,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:14,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:14,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054980581] [2024-06-27 23:26:14,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054980581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:14,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:14,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:26:14,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356574644] [2024-06-27 23:26:14,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:14,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:26:14,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:14,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:26:14,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:26:14,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:26:14,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 665 transitions, 10396 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:14,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:14,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:26:14,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:16,032 INFO L124 PetriNetUnfolderBase]: 3812/6049 cut-off events. [2024-06-27 23:26:16,033 INFO L125 PetriNetUnfolderBase]: For 545604/545677 co-relation queries the response was YES. [2024-06-27 23:26:16,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53871 conditions, 6049 events. 3812/6049 cut-off events. For 545604/545677 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 36455 event pairs, 672 based on Foata normal form. 75/6081 useless extension candidates. Maximal degree in co-relation 53742. Up to 5205 conditions per place. [2024-06-27 23:26:16,105 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 507 selfloop transitions, 133 changer transitions 0/684 dead transitions. [2024-06-27 23:26:16,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 684 transitions, 11862 flow [2024-06-27 23:26:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:26:16,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:26:16,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 23:26:16,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294 [2024-06-27 23:26:16,107 INFO L175 Difference]: Start difference. First operand has 337 places, 665 transitions, 10396 flow. Second operand 9 states and 168 transitions. [2024-06-27 23:26:16,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 684 transitions, 11862 flow [2024-06-27 23:26:16,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 684 transitions, 11508 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-27 23:26:16,921 INFO L231 Difference]: Finished difference. Result has 342 places, 670 transitions, 10495 flow [2024-06-27 23:26:16,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10082, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10495, PETRI_PLACES=342, PETRI_TRANSITIONS=670} [2024-06-27 23:26:16,922 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 298 predicate places. [2024-06-27 23:26:16,922 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 670 transitions, 10495 flow [2024-06-27 23:26:16,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:16,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:16,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:16,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 23:26:16,922 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:16,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:16,922 INFO L85 PathProgramCache]: Analyzing trace with hash 255584321, now seen corresponding path program 2 times [2024-06-27 23:26:16,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:16,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44597289] [2024-06-27 23:26:16,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:16,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:18,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:18,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44597289] [2024-06-27 23:26:18,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44597289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:18,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:18,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:26:18,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798090407] [2024-06-27 23:26:18,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:18,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:26:18,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:18,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:26:18,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:26:18,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:26:18,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 670 transitions, 10495 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:18,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:18,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:26:18,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:20,414 INFO L124 PetriNetUnfolderBase]: 3833/6048 cut-off events. [2024-06-27 23:26:20,414 INFO L125 PetriNetUnfolderBase]: For 565576/565645 co-relation queries the response was YES. [2024-06-27 23:26:20,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55070 conditions, 6048 events. 3833/6048 cut-off events. For 565576/565645 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 36301 event pairs, 713 based on Foata normal form. 71/6069 useless extension candidates. Maximal degree in co-relation 54938. Up to 5096 conditions per place. [2024-06-27 23:26:20,496 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 437 selfloop transitions, 211 changer transitions 0/692 dead transitions. [2024-06-27 23:26:20,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 692 transitions, 12287 flow [2024-06-27 23:26:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:26:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:26:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 23:26:20,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-27 23:26:20,498 INFO L175 Difference]: Start difference. First operand has 342 places, 670 transitions, 10495 flow. Second operand 9 states and 171 transitions. [2024-06-27 23:26:20,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 692 transitions, 12287 flow [2024-06-27 23:26:21,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 692 transitions, 12008 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-27 23:26:21,319 INFO L231 Difference]: Finished difference. Result has 346 places, 677 transitions, 10850 flow [2024-06-27 23:26:21,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10216, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10850, PETRI_PLACES=346, PETRI_TRANSITIONS=677} [2024-06-27 23:26:21,320 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 302 predicate places. [2024-06-27 23:26:21,320 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 677 transitions, 10850 flow [2024-06-27 23:26:21,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:21,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:21,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:21,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 23:26:21,321 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:21,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:21,321 INFO L85 PathProgramCache]: Analyzing trace with hash 789974100, now seen corresponding path program 1 times [2024-06-27 23:26:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:21,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429921377] [2024-06-27 23:26:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:21,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:23,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429921377] [2024-06-27 23:26:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429921377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:23,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:23,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:26:23,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123830886] [2024-06-27 23:26:23,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:23,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:26:23,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:23,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:26:23,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:26:23,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:26:23,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 677 transitions, 10850 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:23,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:23,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:26:23,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:25,019 INFO L124 PetriNetUnfolderBase]: 3617/5810 cut-off events. [2024-06-27 23:26:25,019 INFO L125 PetriNetUnfolderBase]: For 594988/595100 co-relation queries the response was YES. [2024-06-27 23:26:25,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54415 conditions, 5810 events. 3617/5810 cut-off events. For 594988/595100 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 35826 event pairs, 709 based on Foata normal form. 110/5834 useless extension candidates. Maximal degree in co-relation 54281. Up to 4829 conditions per place. [2024-06-27 23:26:25,089 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 476 selfloop transitions, 87 changer transitions 0/698 dead transitions. [2024-06-27 23:26:25,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 698 transitions, 12260 flow [2024-06-27 23:26:25,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:26:25,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:26:25,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-27 23:26:25,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4941860465116279 [2024-06-27 23:26:25,090 INFO L175 Difference]: Start difference. First operand has 346 places, 677 transitions, 10850 flow. Second operand 8 states and 170 transitions. [2024-06-27 23:26:25,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 698 transitions, 12260 flow [2024-06-27 23:26:26,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 698 transitions, 11902 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 23:26:26,087 INFO L231 Difference]: Finished difference. Result has 349 places, 681 transitions, 10763 flow [2024-06-27 23:26:26,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10492, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10763, PETRI_PLACES=349, PETRI_TRANSITIONS=681} [2024-06-27 23:26:26,087 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 305 predicate places. [2024-06-27 23:26:26,087 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 681 transitions, 10763 flow [2024-06-27 23:26:26,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:26,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:26,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:26,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 23:26:26,088 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:26,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:26,088 INFO L85 PathProgramCache]: Analyzing trace with hash 255597341, now seen corresponding path program 3 times [2024-06-27 23:26:26,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:26,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690397146] [2024-06-27 23:26:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:26,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:27,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:27,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690397146] [2024-06-27 23:26:27,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690397146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:27,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:27,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:26:27,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802313908] [2024-06-27 23:26:27,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:27,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:26:27,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:27,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:26:27,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:26:27,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:26:27,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 681 transitions, 10763 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:27,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:27,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:26:27,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:29,685 INFO L124 PetriNetUnfolderBase]: 3880/6120 cut-off events. [2024-06-27 23:26:29,685 INFO L125 PetriNetUnfolderBase]: For 600632/600701 co-relation queries the response was YES. [2024-06-27 23:26:29,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57566 conditions, 6120 events. 3880/6120 cut-off events. For 600632/600701 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 36741 event pairs, 718 based on Foata normal form. 71/6141 useless extension candidates. Maximal degree in co-relation 57430. Up to 5105 conditions per place. [2024-06-27 23:26:29,772 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 432 selfloop transitions, 223 changer transitions 0/699 dead transitions. [2024-06-27 23:26:29,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 699 transitions, 12363 flow [2024-06-27 23:26:29,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:26:29,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:26:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 23:26:29,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2024-06-27 23:26:29,773 INFO L175 Difference]: Start difference. First operand has 349 places, 681 transitions, 10763 flow. Second operand 9 states and 171 transitions. [2024-06-27 23:26:29,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 699 transitions, 12363 flow [2024-06-27 23:26:31,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 699 transitions, 12124 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 23:26:31,010 INFO L231 Difference]: Finished difference. Result has 352 places, 685 transitions, 11090 flow [2024-06-27 23:26:31,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10524, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11090, PETRI_PLACES=352, PETRI_TRANSITIONS=685} [2024-06-27 23:26:31,011 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 308 predicate places. [2024-06-27 23:26:31,011 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 685 transitions, 11090 flow [2024-06-27 23:26:31,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:31,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:31,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:31,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 23:26:31,012 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:31,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:31,012 INFO L85 PathProgramCache]: Analyzing trace with hash -924622876, now seen corresponding path program 11 times [2024-06-27 23:26:31,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:31,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572371140] [2024-06-27 23:26:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:31,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:33,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:33,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572371140] [2024-06-27 23:26:33,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572371140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:33,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:33,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:26:33,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118342168] [2024-06-27 23:26:33,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:33,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:26:33,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:33,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:26:33,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:26:33,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:26:33,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 685 transitions, 11090 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:33,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:33,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:26:33,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:35,254 INFO L124 PetriNetUnfolderBase]: 4147/6510 cut-off events. [2024-06-27 23:26:35,254 INFO L125 PetriNetUnfolderBase]: For 628823/628831 co-relation queries the response was YES. [2024-06-27 23:26:35,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61066 conditions, 6510 events. 4147/6510 cut-off events. For 628823/628831 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 38939 event pairs, 700 based on Foata normal form. 12/6521 useless extension candidates. Maximal degree in co-relation 60929. Up to 5296 conditions per place. [2024-06-27 23:26:35,345 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 508 selfloop transitions, 223 changer transitions 0/736 dead transitions. [2024-06-27 23:26:35,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 736 transitions, 13306 flow [2024-06-27 23:26:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 23:26:35,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44820295983086683 [2024-06-27 23:26:35,346 INFO L175 Difference]: Start difference. First operand has 352 places, 685 transitions, 11090 flow. Second operand 11 states and 212 transitions. [2024-06-27 23:26:35,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 736 transitions, 13306 flow [2024-06-27 23:26:36,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 736 transitions, 12770 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 23:26:36,700 INFO L231 Difference]: Finished difference. Result has 356 places, 695 transitions, 11245 flow [2024-06-27 23:26:36,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10554, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11245, PETRI_PLACES=356, PETRI_TRANSITIONS=695} [2024-06-27 23:26:36,700 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 312 predicate places. [2024-06-27 23:26:36,701 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 695 transitions, 11245 flow [2024-06-27 23:26:36,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:36,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:36,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:36,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 23:26:36,701 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:36,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:36,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1397017834, now seen corresponding path program 12 times [2024-06-27 23:26:36,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:36,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660354975] [2024-06-27 23:26:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:36,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:38,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:38,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:38,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660354975] [2024-06-27 23:26:38,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660354975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:38,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:38,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:26:38,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715629742] [2024-06-27 23:26:38,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:38,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:26:38,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:38,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:26:38,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:26:38,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:26:38,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 695 transitions, 11245 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:38,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:38,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:26:38,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:40,660 INFO L124 PetriNetUnfolderBase]: 4139/6508 cut-off events. [2024-06-27 23:26:40,660 INFO L125 PetriNetUnfolderBase]: For 637998/638006 co-relation queries the response was YES. [2024-06-27 23:26:40,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60929 conditions, 6508 events. 4139/6508 cut-off events. For 637998/638006 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 39047 event pairs, 713 based on Foata normal form. 12/6519 useless extension candidates. Maximal degree in co-relation 60791. Up to 5337 conditions per place. [2024-06-27 23:26:40,751 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 505 selfloop transitions, 222 changer transitions 0/732 dead transitions. [2024-06-27 23:26:40,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 732 transitions, 12971 flow [2024-06-27 23:26:40,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:40,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-27 23:26:40,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4397463002114165 [2024-06-27 23:26:40,753 INFO L175 Difference]: Start difference. First operand has 356 places, 695 transitions, 11245 flow. Second operand 11 states and 208 transitions. [2024-06-27 23:26:40,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 732 transitions, 12971 flow [2024-06-27 23:26:42,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 732 transitions, 12626 flow, removed 87 selfloop flow, removed 5 redundant places. [2024-06-27 23:26:42,138 INFO L231 Difference]: Finished difference. Result has 362 places, 695 transitions, 11351 flow [2024-06-27 23:26:42,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10900, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11351, PETRI_PLACES=362, PETRI_TRANSITIONS=695} [2024-06-27 23:26:42,138 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 318 predicate places. [2024-06-27 23:26:42,138 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 695 transitions, 11351 flow [2024-06-27 23:26:42,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:42,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:42,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:42,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 23:26:42,139 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:42,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1257584522, now seen corresponding path program 13 times [2024-06-27 23:26:42,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:42,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494764604] [2024-06-27 23:26:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:42,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:44,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:44,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494764604] [2024-06-27 23:26:44,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494764604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:44,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:44,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:26:44,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828789137] [2024-06-27 23:26:44,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:44,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:26:44,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:44,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:26:44,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:26:44,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:26:44,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 695 transitions, 11351 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:44,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:44,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:26:44,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:45,976 INFO L124 PetriNetUnfolderBase]: 4181/6564 cut-off events. [2024-06-27 23:26:45,976 INFO L125 PetriNetUnfolderBase]: For 661776/661784 co-relation queries the response was YES. [2024-06-27 23:26:46,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62212 conditions, 6564 events. 4181/6564 cut-off events. For 661776/661784 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 39386 event pairs, 697 based on Foata normal form. 12/6575 useless extension candidates. Maximal degree in co-relation 62073. Up to 5231 conditions per place. [2024-06-27 23:26:46,072 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 506 selfloop transitions, 229 changer transitions 0/740 dead transitions. [2024-06-27 23:26:46,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 740 transitions, 13499 flow [2024-06-27 23:26:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:46,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:46,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 23:26:46,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44820295983086683 [2024-06-27 23:26:46,074 INFO L175 Difference]: Start difference. First operand has 362 places, 695 transitions, 11351 flow. Second operand 11 states and 212 transitions. [2024-06-27 23:26:46,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 740 transitions, 13499 flow [2024-06-27 23:26:47,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 740 transitions, 13041 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 23:26:47,188 INFO L231 Difference]: Finished difference. Result has 363 places, 699 transitions, 11526 flow [2024-06-27 23:26:47,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10893, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11526, PETRI_PLACES=363, PETRI_TRANSITIONS=699} [2024-06-27 23:26:47,189 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 319 predicate places. [2024-06-27 23:26:47,189 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 699 transitions, 11526 flow [2024-06-27 23:26:47,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:47,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:47,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:47,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 23:26:47,190 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:47,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:47,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1021112492, now seen corresponding path program 14 times [2024-06-27 23:26:47,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:47,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687807235] [2024-06-27 23:26:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:47,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:48,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:48,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687807235] [2024-06-27 23:26:48,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687807235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:48,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:48,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:26:48,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646011094] [2024-06-27 23:26:48,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:48,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:26:48,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:48,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:26:48,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:26:49,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:26:49,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 699 transitions, 11526 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:49,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:49,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:26:49,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:51,116 INFO L124 PetriNetUnfolderBase]: 4209/6607 cut-off events. [2024-06-27 23:26:51,116 INFO L125 PetriNetUnfolderBase]: For 681435/681443 co-relation queries the response was YES. [2024-06-27 23:26:51,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63067 conditions, 6607 events. 4209/6607 cut-off events. For 681435/681443 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 39716 event pairs, 701 based on Foata normal form. 12/6618 useless extension candidates. Maximal degree in co-relation 62927. Up to 5442 conditions per place. [2024-06-27 23:26:51,216 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 499 selfloop transitions, 233 changer transitions 0/737 dead transitions. [2024-06-27 23:26:51,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 737 transitions, 13326 flow [2024-06-27 23:26:51,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:51,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 23:26:51,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355179704016913 [2024-06-27 23:26:51,217 INFO L175 Difference]: Start difference. First operand has 363 places, 699 transitions, 11526 flow. Second operand 11 states and 206 transitions. [2024-06-27 23:26:51,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 737 transitions, 13326 flow [2024-06-27 23:26:52,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 737 transitions, 12974 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-27 23:26:52,765 INFO L231 Difference]: Finished difference. Result has 367 places, 704 transitions, 11777 flow [2024-06-27 23:26:52,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11185, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11777, PETRI_PLACES=367, PETRI_TRANSITIONS=704} [2024-06-27 23:26:52,766 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 323 predicate places. [2024-06-27 23:26:52,766 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 704 transitions, 11777 flow [2024-06-27 23:26:52,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:52,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:52,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:52,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 23:26:52,766 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:52,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:52,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1027368602, now seen corresponding path program 15 times [2024-06-27 23:26:52,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:52,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810968641] [2024-06-27 23:26:52,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:52,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:26:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:26:54,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:26:54,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810968641] [2024-06-27 23:26:54,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810968641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:26:54,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:26:54,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:26:54,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312266736] [2024-06-27 23:26:54,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:26:54,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:26:54,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:26:54,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:26:54,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:26:54,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:26:54,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 704 transitions, 11777 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:54,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:26:54,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:26:54,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:26:56,840 INFO L124 PetriNetUnfolderBase]: 4226/6634 cut-off events. [2024-06-27 23:26:56,840 INFO L125 PetriNetUnfolderBase]: For 695546/695554 co-relation queries the response was YES. [2024-06-27 23:26:56,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63801 conditions, 6634 events. 4226/6634 cut-off events. For 695546/695554 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 39903 event pairs, 706 based on Foata normal form. 12/6645 useless extension candidates. Maximal degree in co-relation 63659. Up to 5469 conditions per place. [2024-06-27 23:26:56,925 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 509 selfloop transitions, 227 changer transitions 0/741 dead transitions. [2024-06-27 23:26:56,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 741 transitions, 13573 flow [2024-06-27 23:26:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:26:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:26:56,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 23:26:56,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4376321353065539 [2024-06-27 23:26:56,926 INFO L175 Difference]: Start difference. First operand has 367 places, 704 transitions, 11777 flow. Second operand 11 states and 207 transitions. [2024-06-27 23:26:56,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 741 transitions, 13573 flow [2024-06-27 23:26:58,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 741 transitions, 12890 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 23:26:58,287 INFO L231 Difference]: Finished difference. Result has 369 places, 706 transitions, 11641 flow [2024-06-27 23:26:58,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11094, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11641, PETRI_PLACES=369, PETRI_TRANSITIONS=706} [2024-06-27 23:26:58,288 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 325 predicate places. [2024-06-27 23:26:58,288 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 706 transitions, 11641 flow [2024-06-27 23:26:58,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:26:58,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:26:58,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:26:58,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 23:26:58,288 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:26:58,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:26:58,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1027607612, now seen corresponding path program 16 times [2024-06-27 23:26:58,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:26:58,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577483865] [2024-06-27 23:26:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:26:58,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:26:58,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:00,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:00,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577483865] [2024-06-27 23:27:00,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577483865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:00,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:00,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:00,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927555726] [2024-06-27 23:27:00,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:00,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:00,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:00,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:00,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:00,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:27:00,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 706 transitions, 11641 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:00,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:00,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:27:00,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:02,649 INFO L124 PetriNetUnfolderBase]: 4218/6622 cut-off events. [2024-06-27 23:27:02,649 INFO L125 PetriNetUnfolderBase]: For 700969/700977 co-relation queries the response was YES. [2024-06-27 23:27:02,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63347 conditions, 6622 events. 4218/6622 cut-off events. For 700969/700977 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 39804 event pairs, 699 based on Foata normal form. 12/6633 useless extension candidates. Maximal degree in co-relation 63204. Up to 5392 conditions per place. [2024-06-27 23:27:02,739 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 507 selfloop transitions, 230 changer transitions 0/742 dead transitions. [2024-06-27 23:27:02,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 742 transitions, 13359 flow [2024-06-27 23:27:02,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-27 23:27:02,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4397463002114165 [2024-06-27 23:27:02,740 INFO L175 Difference]: Start difference. First operand has 369 places, 706 transitions, 11641 flow. Second operand 11 states and 208 transitions. [2024-06-27 23:27:02,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 742 transitions, 13359 flow [2024-06-27 23:27:04,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 742 transitions, 12791 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-06-27 23:27:04,171 INFO L231 Difference]: Finished difference. Result has 372 places, 706 transitions, 11540 flow [2024-06-27 23:27:04,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11073, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11540, PETRI_PLACES=372, PETRI_TRANSITIONS=706} [2024-06-27 23:27:04,172 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 328 predicate places. [2024-06-27 23:27:04,173 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 706 transitions, 11540 flow [2024-06-27 23:27:04,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:04,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:04,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:04,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 23:27:04,173 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:04,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:04,174 INFO L85 PathProgramCache]: Analyzing trace with hash 352081768, now seen corresponding path program 17 times [2024-06-27 23:27:04,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:04,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909725326] [2024-06-27 23:27:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:04,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:06,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:06,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909725326] [2024-06-27 23:27:06,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909725326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:06,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:06,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:06,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464140495] [2024-06-27 23:27:06,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:06,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:06,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:06,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:06,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:06,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:27:06,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 706 transitions, 11540 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:06,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:06,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:27:06,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:08,516 INFO L124 PetriNetUnfolderBase]: 4235/6654 cut-off events. [2024-06-27 23:27:08,516 INFO L125 PetriNetUnfolderBase]: For 715148/715156 co-relation queries the response was YES. [2024-06-27 23:27:08,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63562 conditions, 6654 events. 4235/6654 cut-off events. For 715148/715156 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 40045 event pairs, 711 based on Foata normal form. 12/6665 useless extension candidates. Maximal degree in co-relation 63418. Up to 5484 conditions per place. [2024-06-27 23:27:08,609 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 487 selfloop transitions, 247 changer transitions 0/739 dead transitions. [2024-06-27 23:27:08,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 739 transitions, 13264 flow [2024-06-27 23:27:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-27 23:27:08,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334038054968288 [2024-06-27 23:27:08,610 INFO L175 Difference]: Start difference. First operand has 372 places, 706 transitions, 11540 flow. Second operand 11 states and 205 transitions. [2024-06-27 23:27:08,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 739 transitions, 13264 flow [2024-06-27 23:27:10,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 739 transitions, 12576 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-27 23:27:10,143 INFO L231 Difference]: Finished difference. Result has 372 places, 708 transitions, 11439 flow [2024-06-27 23:27:10,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=10852, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11439, PETRI_PLACES=372, PETRI_TRANSITIONS=708} [2024-06-27 23:27:10,144 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 328 predicate places. [2024-06-27 23:27:10,144 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 708 transitions, 11439 flow [2024-06-27 23:27:10,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:10,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:10,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:10,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 23:27:10,145 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:10,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:10,145 INFO L85 PathProgramCache]: Analyzing trace with hash 360652648, now seen corresponding path program 18 times [2024-06-27 23:27:10,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:10,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342744816] [2024-06-27 23:27:10,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:10,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:12,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:12,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:12,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342744816] [2024-06-27 23:27:12,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342744816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:12,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:12,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:12,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110838111] [2024-06-27 23:27:12,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:12,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:12,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:12,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:12,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:12,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:27:12,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 708 transitions, 11439 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:12,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:12,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:27:12,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:14,132 INFO L124 PetriNetUnfolderBase]: 4277/6730 cut-off events. [2024-06-27 23:27:14,132 INFO L125 PetriNetUnfolderBase]: For 746117/746125 co-relation queries the response was YES. [2024-06-27 23:27:14,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64349 conditions, 6730 events. 4277/6730 cut-off events. For 746117/746125 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 40660 event pairs, 725 based on Foata normal form. 12/6741 useless extension candidates. Maximal degree in co-relation 64205. Up to 5430 conditions per place. [2024-06-27 23:27:14,232 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 493 selfloop transitions, 251 changer transitions 0/749 dead transitions. [2024-06-27 23:27:14,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 749 transitions, 13567 flow [2024-06-27 23:27:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:14,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:14,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-27 23:27:14,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44608879492600423 [2024-06-27 23:27:14,233 INFO L175 Difference]: Start difference. First operand has 372 places, 708 transitions, 11439 flow. Second operand 11 states and 211 transitions. [2024-06-27 23:27:14,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 749 transitions, 13567 flow [2024-06-27 23:27:15,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 749 transitions, 13131 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-27 23:27:15,920 INFO L231 Difference]: Finished difference. Result has 375 places, 712 transitions, 11688 flow [2024-06-27 23:27:15,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11003, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11688, PETRI_PLACES=375, PETRI_TRANSITIONS=712} [2024-06-27 23:27:15,920 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 331 predicate places. [2024-06-27 23:27:15,920 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 712 transitions, 11688 flow [2024-06-27 23:27:15,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:15,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:15,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:15,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 23:27:15,921 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:15,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:15,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1061919720, now seen corresponding path program 19 times [2024-06-27 23:27:15,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:15,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539731053] [2024-06-27 23:27:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:15,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:17,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:17,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539731053] [2024-06-27 23:27:17,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539731053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:17,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:17,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:17,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820799560] [2024-06-27 23:27:17,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:17,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:17,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:17,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:17,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:17,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:27:17,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 712 transitions, 11688 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:17,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:17,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:27:17,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:19,870 INFO L124 PetriNetUnfolderBase]: 4269/6718 cut-off events. [2024-06-27 23:27:19,870 INFO L125 PetriNetUnfolderBase]: For 756741/756749 co-relation queries the response was YES. [2024-06-27 23:27:19,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64150 conditions, 6718 events. 4269/6718 cut-off events. For 756741/756749 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 40585 event pairs, 726 based on Foata normal form. 12/6729 useless extension candidates. Maximal degree in co-relation 64007. Up to 5491 conditions per place. [2024-06-27 23:27:19,972 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 492 selfloop transitions, 248 changer transitions 0/745 dead transitions. [2024-06-27 23:27:19,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 745 transitions, 13360 flow [2024-06-27 23:27:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:19,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:19,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-27 23:27:19,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4376321353065539 [2024-06-27 23:27:19,973 INFO L175 Difference]: Start difference. First operand has 375 places, 712 transitions, 11688 flow. Second operand 11 states and 207 transitions. [2024-06-27 23:27:19,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 745 transitions, 13360 flow [2024-06-27 23:27:21,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 745 transitions, 12910 flow, removed 76 selfloop flow, removed 7 redundant places. [2024-06-27 23:27:21,668 INFO L231 Difference]: Finished difference. Result has 379 places, 712 transitions, 11741 flow [2024-06-27 23:27:21,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11238, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11741, PETRI_PLACES=379, PETRI_TRANSITIONS=712} [2024-06-27 23:27:21,668 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 335 predicate places. [2024-06-27 23:27:21,668 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 712 transitions, 11741 flow [2024-06-27 23:27:21,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:21,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:21,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:21,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 23:27:21,669 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:21,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:21,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1837692776, now seen corresponding path program 20 times [2024-06-27 23:27:21,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:21,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587465507] [2024-06-27 23:27:21,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:21,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:23,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:23,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587465507] [2024-06-27 23:27:23,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587465507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:23,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:23,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:23,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877325634] [2024-06-27 23:27:23,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:23,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:23,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:23,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:23,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:23,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:27:23,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 712 transitions, 11741 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:23,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:23,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:27:23,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:25,865 INFO L124 PetriNetUnfolderBase]: 4286/6735 cut-off events. [2024-06-27 23:27:25,866 INFO L125 PetriNetUnfolderBase]: For 771549/771557 co-relation queries the response was YES. [2024-06-27 23:27:25,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64853 conditions, 6735 events. 4286/6735 cut-off events. For 771549/771557 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 40641 event pairs, 615 based on Foata normal form. 12/6746 useless extension candidates. Maximal degree in co-relation 64708. Up to 4523 conditions per place. [2024-06-27 23:27:25,957 INFO L140 encePairwiseOnDemand]: 30/43 looper letters, 435 selfloop transitions, 312 changer transitions 0/752 dead transitions. [2024-06-27 23:27:25,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 752 transitions, 13863 flow [2024-06-27 23:27:25,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:27:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:27:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 23:27:25,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4439746300211416 [2024-06-27 23:27:25,959 INFO L175 Difference]: Start difference. First operand has 379 places, 712 transitions, 11741 flow. Second operand 11 states and 210 transitions. [2024-06-27 23:27:25,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 752 transitions, 13863 flow [2024-06-27 23:27:27,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 752 transitions, 13345 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 23:27:27,636 INFO L231 Difference]: Finished difference. Result has 380 places, 716 transitions, 12038 flow [2024-06-27 23:27:27,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11223, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12038, PETRI_PLACES=380, PETRI_TRANSITIONS=716} [2024-06-27 23:27:27,637 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 336 predicate places. [2024-06-27 23:27:27,637 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 716 transitions, 12038 flow [2024-06-27 23:27:27,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:27,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:27,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:27,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 23:27:27,638 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:27,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash 717585492, now seen corresponding path program 2 times [2024-06-27 23:27:27,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:27,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909470475] [2024-06-27 23:27:27,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:27,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:29,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:29,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909470475] [2024-06-27 23:27:29,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909470475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:29,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:29,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:27:29,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359634867] [2024-06-27 23:27:29,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:29,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:27:29,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:29,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:27:29,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:27:29,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:27:29,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 716 transitions, 12038 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:29,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:29,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:27:29,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:31,304 INFO L124 PetriNetUnfolderBase]: 3786/6118 cut-off events. [2024-06-27 23:27:31,304 INFO L125 PetriNetUnfolderBase]: For 806551/806650 co-relation queries the response was YES. [2024-06-27 23:27:31,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61628 conditions, 6118 events. 3786/6118 cut-off events. For 806551/806650 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 38320 event pairs, 709 based on Foata normal form. 103/6119 useless extension candidates. Maximal degree in co-relation 61482. Up to 5120 conditions per place. [2024-06-27 23:27:31,396 INFO L140 encePairwiseOnDemand]: 33/43 looper letters, 506 selfloop transitions, 91 changer transitions 0/733 dead transitions. [2024-06-27 23:27:31,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 733 transitions, 13684 flow [2024-06-27 23:27:31,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 23:27:31,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 23:27:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 23:27:31,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5116279069767442 [2024-06-27 23:27:31,397 INFO L175 Difference]: Start difference. First operand has 380 places, 716 transitions, 12038 flow. Second operand 7 states and 154 transitions. [2024-06-27 23:27:31,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 733 transitions, 13684 flow [2024-06-27 23:27:32,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 733 transitions, 13283 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-27 23:27:32,986 INFO L231 Difference]: Finished difference. Result has 380 places, 720 transitions, 11926 flow [2024-06-27 23:27:32,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11637, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11926, PETRI_PLACES=380, PETRI_TRANSITIONS=720} [2024-06-27 23:27:32,987 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 336 predicate places. [2024-06-27 23:27:32,987 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 720 transitions, 11926 flow [2024-06-27 23:27:32,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:32,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:32,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:32,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 23:27:32,987 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:32,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:32,987 INFO L85 PathProgramCache]: Analyzing trace with hash -322061887, now seen corresponding path program 4 times [2024-06-27 23:27:32,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:32,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432066511] [2024-06-27 23:27:32,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:32,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:35,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:35,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:35,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432066511] [2024-06-27 23:27:35,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432066511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:35,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:35,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:27:35,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855133196] [2024-06-27 23:27:35,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:35,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:27:35,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:35,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:27:35,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:27:35,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:27:35,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 720 transitions, 11926 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:35,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:35,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:27:35,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:37,342 INFO L124 PetriNetUnfolderBase]: 4166/6564 cut-off events. [2024-06-27 23:27:37,342 INFO L125 PetriNetUnfolderBase]: For 830437/830507 co-relation queries the response was YES. [2024-06-27 23:27:37,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66004 conditions, 6564 events. 4166/6564 cut-off events. For 830437/830507 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 39878 event pairs, 802 based on Foata normal form. 71/6568 useless extension candidates. Maximal degree in co-relation 65857. Up to 5485 conditions per place. [2024-06-27 23:27:37,439 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 448 selfloop transitions, 255 changer transitions 0/747 dead transitions. [2024-06-27 23:27:37,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 747 transitions, 14292 flow [2024-06-27 23:27:37,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:27:37,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:27:37,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 23:27:37,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392764857881137 [2024-06-27 23:27:37,440 INFO L175 Difference]: Start difference. First operand has 380 places, 720 transitions, 11926 flow. Second operand 9 states and 170 transitions. [2024-06-27 23:27:37,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 747 transitions, 14292 flow [2024-06-27 23:27:39,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 747 transitions, 14031 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-27 23:27:39,197 INFO L231 Difference]: Finished difference. Result has 384 places, 734 transitions, 12628 flow [2024-06-27 23:27:39,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=11665, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12628, PETRI_PLACES=384, PETRI_TRANSITIONS=734} [2024-06-27 23:27:39,198 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 340 predicate places. [2024-06-27 23:27:39,198 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 734 transitions, 12628 flow [2024-06-27 23:27:39,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:39,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:39,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:39,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 23:27:39,198 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:39,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash 732317622, now seen corresponding path program 3 times [2024-06-27 23:27:39,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:39,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265965350] [2024-06-27 23:27:39,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:39,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:41,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:41,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:41,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265965350] [2024-06-27 23:27:41,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265965350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:41,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:41,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:41,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88303850] [2024-06-27 23:27:41,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:41,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:41,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:41,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:41,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:41,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:27:41,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 734 transitions, 12628 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:41,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:41,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:27:41,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:43,223 INFO L124 PetriNetUnfolderBase]: 3881/6261 cut-off events. [2024-06-27 23:27:43,223 INFO L125 PetriNetUnfolderBase]: For 869861/869960 co-relation queries the response was YES. [2024-06-27 23:27:43,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64968 conditions, 6261 events. 3881/6261 cut-off events. For 869861/869960 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 39353 event pairs, 712 based on Foata normal form. 103/6262 useless extension candidates. Maximal degree in co-relation 64819. Up to 5079 conditions per place. [2024-06-27 23:27:43,315 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 498 selfloop transitions, 119 changer transitions 0/757 dead transitions. [2024-06-27 23:27:43,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 757 transitions, 14442 flow [2024-06-27 23:27:43,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 23:27:43,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 23:27:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-27 23:27:43,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 23:27:43,316 INFO L175 Difference]: Start difference. First operand has 384 places, 734 transitions, 12628 flow. Second operand 8 states and 172 transitions. [2024-06-27 23:27:43,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 757 transitions, 14442 flow [2024-06-27 23:27:45,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 757 transitions, 14074 flow, removed 83 selfloop flow, removed 4 redundant places. [2024-06-27 23:27:45,261 INFO L231 Difference]: Finished difference. Result has 388 places, 742 transitions, 12721 flow [2024-06-27 23:27:45,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12264, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12721, PETRI_PLACES=388, PETRI_TRANSITIONS=742} [2024-06-27 23:27:45,262 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 344 predicate places. [2024-06-27 23:27:45,262 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 742 transitions, 12721 flow [2024-06-27 23:27:45,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:45,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:45,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:45,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 23:27:45,263 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:45,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:45,263 INFO L85 PathProgramCache]: Analyzing trace with hash 732317157, now seen corresponding path program 5 times [2024-06-27 23:27:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:45,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82315793] [2024-06-27 23:27:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:45,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:47,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:47,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82315793] [2024-06-27 23:27:47,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82315793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:47,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:47,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:27:47,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192363982] [2024-06-27 23:27:47,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:47,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:27:47,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:47,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:27:47,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:27:47,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:27:47,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 742 transitions, 12721 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:47,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:47,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:27:47,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:48,962 INFO L124 PetriNetUnfolderBase]: 4229/6654 cut-off events. [2024-06-27 23:27:48,963 INFO L125 PetriNetUnfolderBase]: For 883195/883265 co-relation queries the response was YES. [2024-06-27 23:27:49,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68753 conditions, 6654 events. 4229/6654 cut-off events. For 883195/883265 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 40372 event pairs, 809 based on Foata normal form. 71/6658 useless extension candidates. Maximal degree in co-relation 68603. Up to 5431 conditions per place. [2024-06-27 23:27:49,058 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 431 selfloop transitions, 287 changer transitions 0/762 dead transitions. [2024-06-27 23:27:49,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 762 transitions, 14779 flow [2024-06-27 23:27:49,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:27:49,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:27:49,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 23:27:49,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43669250645994834 [2024-06-27 23:27:49,059 INFO L175 Difference]: Start difference. First operand has 388 places, 742 transitions, 12721 flow. Second operand 9 states and 169 transitions. [2024-06-27 23:27:49,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 762 transitions, 14779 flow [2024-06-27 23:27:50,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 762 transitions, 14523 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-27 23:27:50,988 INFO L231 Difference]: Finished difference. Result has 393 places, 750 transitions, 13306 flow [2024-06-27 23:27:50,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12465, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13306, PETRI_PLACES=393, PETRI_TRANSITIONS=750} [2024-06-27 23:27:50,988 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 349 predicate places. [2024-06-27 23:27:50,988 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 750 transitions, 13306 flow [2024-06-27 23:27:50,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:50,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:50,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:50,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 23:27:50,989 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:50,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:50,989 INFO L85 PathProgramCache]: Analyzing trace with hash -307314412, now seen corresponding path program 4 times [2024-06-27 23:27:50,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:50,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061766112] [2024-06-27 23:27:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:50,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:27:53,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:53,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061766112] [2024-06-27 23:27:53,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061766112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:53,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:53,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:27:53,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504921454] [2024-06-27 23:27:53,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:53,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:27:53,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:53,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:27:53,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:27:54,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2024-06-27 23:27:54,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 750 transitions, 13306 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:54,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:54,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2024-06-27 23:27:54,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:27:55,858 INFO L124 PetriNetUnfolderBase]: 3862/6218 cut-off events. [2024-06-27 23:27:55,858 INFO L125 PetriNetUnfolderBase]: For 904630/904739 co-relation queries the response was YES. [2024-06-27 23:27:55,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66319 conditions, 6218 events. 3862/6218 cut-off events. For 904630/904739 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 39002 event pairs, 866 based on Foata normal form. 106/6193 useless extension candidates. Maximal degree in co-relation 66167. Up to 5355 conditions per place. [2024-06-27 23:27:55,963 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 586 selfloop transitions, 34 changer transitions 0/762 dead transitions. [2024-06-27 23:27:55,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 762 transitions, 14588 flow [2024-06-27 23:27:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:27:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:27:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-27 23:27:55,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43669250645994834 [2024-06-27 23:27:55,964 INFO L175 Difference]: Start difference. First operand has 393 places, 750 transitions, 13306 flow. Second operand 9 states and 169 transitions. [2024-06-27 23:27:55,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 762 transitions, 14588 flow [2024-06-27 23:27:58,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 762 transitions, 14066 flow, removed 101 selfloop flow, removed 5 redundant places. [2024-06-27 23:27:58,065 INFO L231 Difference]: Finished difference. Result has 397 places, 750 transitions, 12859 flow [2024-06-27 23:27:58,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12784, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=716, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12859, PETRI_PLACES=397, PETRI_TRANSITIONS=750} [2024-06-27 23:27:58,066 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 353 predicate places. [2024-06-27 23:27:58,066 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 750 transitions, 12859 flow [2024-06-27 23:27:58,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:58,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:27:58,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:27:58,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 23:27:58,067 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:27:58,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:27:58,067 INFO L85 PathProgramCache]: Analyzing trace with hash -322075310, now seen corresponding path program 4 times [2024-06-27 23:27:58,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:27:58,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608846527] [2024-06-27 23:27:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:27:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:27:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:27:59,598 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 23:27:59,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:27:59,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608846527] [2024-06-27 23:27:59,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608846527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:27:59,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:27:59,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:27:59,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824636838] [2024-06-27 23:27:59,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:27:59,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:27:59,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:27:59,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:27:59,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:27:59,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:27:59,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 750 transitions, 12859 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:27:59,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:27:59,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:27:59,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:01,350 INFO L124 PetriNetUnfolderBase]: 4224/6684 cut-off events. [2024-06-27 23:28:01,350 INFO L125 PetriNetUnfolderBase]: For 893113/893180 co-relation queries the response was YES. [2024-06-27 23:28:01,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69121 conditions, 6684 events. 4224/6684 cut-off events. For 893113/893180 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 40845 event pairs, 748 based on Foata normal form. 68/6706 useless extension candidates. Maximal degree in co-relation 68967. Up to 5718 conditions per place. [2024-06-27 23:28:01,461 INFO L140 encePairwiseOnDemand]: 32/43 looper letters, 566 selfloop transitions, 157 changer transitions 0/767 dead transitions. [2024-06-27 23:28:01,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 767 transitions, 14697 flow [2024-06-27 23:28:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:28:01,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:28:01,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 23:28:01,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42377260981912146 [2024-06-27 23:28:01,463 INFO L175 Difference]: Start difference. First operand has 397 places, 750 transitions, 12859 flow. Second operand 9 states and 164 transitions. [2024-06-27 23:28:01,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 767 transitions, 14697 flow [2024-06-27 23:28:03,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 767 transitions, 14544 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 23:28:03,462 INFO L231 Difference]: Finished difference. Result has 397 places, 756 transitions, 13216 flow [2024-06-27 23:28:03,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12706, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13216, PETRI_PLACES=397, PETRI_TRANSITIONS=756} [2024-06-27 23:28:03,463 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 353 predicate places. [2024-06-27 23:28:03,463 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 756 transitions, 13216 flow [2024-06-27 23:28:03,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:03,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:03,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:03,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 23:28:03,464 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:03,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:03,464 INFO L85 PathProgramCache]: Analyzing trace with hash 717572007, now seen corresponding path program 6 times [2024-06-27 23:28:03,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:03,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688013010] [2024-06-27 23:28:03,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:03,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:05,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:05,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688013010] [2024-06-27 23:28:05,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688013010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:05,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:05,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:28:05,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629693627] [2024-06-27 23:28:05,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:05,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:28:05,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:05,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:28:05,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:28:05,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:28:05,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 756 transitions, 13216 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:05,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:05,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:28:05,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:07,077 INFO L124 PetriNetUnfolderBase]: 4214/6625 cut-off events. [2024-06-27 23:28:07,077 INFO L125 PetriNetUnfolderBase]: For 910815/910885 co-relation queries the response was YES. [2024-06-27 23:28:07,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69472 conditions, 6625 events. 4214/6625 cut-off events. For 910815/910885 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 40138 event pairs, 793 based on Foata normal form. 71/6629 useless extension candidates. Maximal degree in co-relation 69318. Up to 5580 conditions per place. [2024-06-27 23:28:07,181 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 476 selfloop transitions, 249 changer transitions 0/769 dead transitions. [2024-06-27 23:28:07,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 769 transitions, 15220 flow [2024-06-27 23:28:07,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 23:28:07,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 23:28:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-27 23:28:07,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43410852713178294 [2024-06-27 23:28:07,182 INFO L175 Difference]: Start difference. First operand has 397 places, 756 transitions, 13216 flow. Second operand 9 states and 168 transitions. [2024-06-27 23:28:07,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 769 transitions, 15220 flow [2024-06-27 23:28:09,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 769 transitions, 14933 flow, removed 84 selfloop flow, removed 5 redundant places. [2024-06-27 23:28:09,455 INFO L231 Difference]: Finished difference. Result has 401 places, 756 transitions, 13435 flow [2024-06-27 23:28:09,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12929, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13435, PETRI_PLACES=401, PETRI_TRANSITIONS=756} [2024-06-27 23:28:09,456 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 357 predicate places. [2024-06-27 23:28:09,456 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 756 transitions, 13435 flow [2024-06-27 23:28:09,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:09,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:09,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:09,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 23:28:09,457 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:09,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:09,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1067532526, now seen corresponding path program 3 times [2024-06-27 23:28:09,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:09,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415785766] [2024-06-27 23:28:09,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:09,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:10,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:10,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415785766] [2024-06-27 23:28:10,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415785766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:10,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:10,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:28:10,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972046319] [2024-06-27 23:28:10,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:10,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:28:10,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:10,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:28:10,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:28:11,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:28:11,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 756 transitions, 13435 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:11,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:11,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:28:11,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:13,290 INFO L124 PetriNetUnfolderBase]: 4555/7161 cut-off events. [2024-06-27 23:28:13,290 INFO L125 PetriNetUnfolderBase]: For 968936/968940 co-relation queries the response was YES. [2024-06-27 23:28:13,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73381 conditions, 7161 events. 4555/7161 cut-off events. For 968936/968940 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 43983 event pairs, 802 based on Foata normal form. 24/7184 useless extension candidates. Maximal degree in co-relation 73225. Up to 6302 conditions per place. [2024-06-27 23:28:13,403 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 667 selfloop transitions, 130 changer transitions 0/802 dead transitions. [2024-06-27 23:28:13,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 802 transitions, 15391 flow [2024-06-27 23:28:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:13,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-27 23:28:13,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45665961945031713 [2024-06-27 23:28:13,405 INFO L175 Difference]: Start difference. First operand has 401 places, 756 transitions, 13435 flow. Second operand 11 states and 216 transitions. [2024-06-27 23:28:13,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 802 transitions, 15391 flow [2024-06-27 23:28:15,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 802 transitions, 14869 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 23:28:15,857 INFO L231 Difference]: Finished difference. Result has 404 places, 758 transitions, 13269 flow [2024-06-27 23:28:15,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12913, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=756, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13269, PETRI_PLACES=404, PETRI_TRANSITIONS=758} [2024-06-27 23:28:15,858 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 360 predicate places. [2024-06-27 23:28:15,858 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 758 transitions, 13269 flow [2024-06-27 23:28:15,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:15,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:15,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:15,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 23:28:15,858 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:15,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:15,859 INFO L85 PathProgramCache]: Analyzing trace with hash -473398256, now seen corresponding path program 4 times [2024-06-27 23:28:15,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:15,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681766177] [2024-06-27 23:28:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:15,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:16,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:16,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681766177] [2024-06-27 23:28:16,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681766177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:16,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:16,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:28:16,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431872229] [2024-06-27 23:28:16,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:16,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:28:16,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:28:16,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:28:17,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:28:17,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 758 transitions, 13269 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:17,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:17,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:28:17,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:19,632 INFO L124 PetriNetUnfolderBase]: 4925/7772 cut-off events. [2024-06-27 23:28:19,632 INFO L125 PetriNetUnfolderBase]: For 1075834/1075840 co-relation queries the response was YES. [2024-06-27 23:28:19,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80825 conditions, 7772 events. 4925/7772 cut-off events. For 1075834/1075840 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 48689 event pairs, 780 based on Foata normal form. 22/7793 useless extension candidates. Maximal degree in co-relation 80668. Up to 6366 conditions per place. [2024-06-27 23:28:19,759 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 637 selfloop transitions, 202 changer transitions 0/844 dead transitions. [2024-06-27 23:28:19,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 844 transitions, 16148 flow [2024-06-27 23:28:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 23:28:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 23:28:19,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 294 transitions. [2024-06-27 23:28:19,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558139534883721 [2024-06-27 23:28:19,761 INFO L175 Difference]: Start difference. First operand has 404 places, 758 transitions, 13269 flow. Second operand 15 states and 294 transitions. [2024-06-27 23:28:19,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 844 transitions, 16148 flow [2024-06-27 23:28:22,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 844 transitions, 15813 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-27 23:28:22,972 INFO L231 Difference]: Finished difference. Result has 411 places, 771 transitions, 13769 flow [2024-06-27 23:28:22,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=12979, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=13769, PETRI_PLACES=411, PETRI_TRANSITIONS=771} [2024-06-27 23:28:22,973 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 367 predicate places. [2024-06-27 23:28:22,973 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 771 transitions, 13769 flow [2024-06-27 23:28:22,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:22,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:22,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:22,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 23:28:22,973 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:22,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:22,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1558649010, now seen corresponding path program 5 times [2024-06-27 23:28:22,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:22,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344586499] [2024-06-27 23:28:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:22,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:23,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:23,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344586499] [2024-06-27 23:28:23,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344586499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:23,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:23,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 23:28:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356019328] [2024-06-27 23:28:23,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:23,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 23:28:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:23,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 23:28:23,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 23:28:23,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 43 [2024-06-27 23:28:23,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 771 transitions, 13769 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:23,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:23,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 43 [2024-06-27 23:28:23,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:26,401 INFO L124 PetriNetUnfolderBase]: 4612/7762 cut-off events. [2024-06-27 23:28:26,401 INFO L125 PetriNetUnfolderBase]: For 1225769/1226404 co-relation queries the response was YES. [2024-06-27 23:28:26,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82345 conditions, 7762 events. 4612/7762 cut-off events. For 1225769/1226404 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 53452 event pairs, 588 based on Foata normal form. 118/7765 useless extension candidates. Maximal degree in co-relation 82186. Up to 4974 conditions per place. [2024-06-27 23:28:26,533 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 531 selfloop transitions, 174 changer transitions 0/858 dead transitions. [2024-06-27 23:28:26,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 858 transitions, 16663 flow [2024-06-27 23:28:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 23:28:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 23:28:26,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 309 transitions. [2024-06-27 23:28:26,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132890365448505 [2024-06-27 23:28:26,535 INFO L175 Difference]: Start difference. First operand has 411 places, 771 transitions, 13769 flow. Second operand 14 states and 309 transitions. [2024-06-27 23:28:26,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 858 transitions, 16663 flow [2024-06-27 23:28:30,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 858 transitions, 16350 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-27 23:28:30,031 INFO L231 Difference]: Finished difference. Result has 418 places, 791 transitions, 14710 flow [2024-06-27 23:28:30,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=13464, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14710, PETRI_PLACES=418, PETRI_TRANSITIONS=791} [2024-06-27 23:28:30,032 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 374 predicate places. [2024-06-27 23:28:30,032 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 791 transitions, 14710 flow [2024-06-27 23:28:30,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:30,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:30,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:30,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 23:28:30,032 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:30,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:30,032 INFO L85 PathProgramCache]: Analyzing trace with hash -144990132, now seen corresponding path program 6 times [2024-06-27 23:28:30,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:30,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377647553] [2024-06-27 23:28:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:30,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:31,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:31,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377647553] [2024-06-27 23:28:31,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377647553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:31,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:31,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:28:31,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470202374] [2024-06-27 23:28:31,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:31,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:28:31,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:31,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:28:31,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:28:31,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:28:31,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 791 transitions, 14710 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:31,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:31,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:28:31,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:34,537 INFO L124 PetriNetUnfolderBase]: 6108/9798 cut-off events. [2024-06-27 23:28:34,538 INFO L125 PetriNetUnfolderBase]: For 1496173/1496179 co-relation queries the response was YES. [2024-06-27 23:28:34,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106548 conditions, 9798 events. 6108/9798 cut-off events. For 1496173/1496179 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 65608 event pairs, 1567 based on Foata normal form. 30/9827 useless extension candidates. Maximal degree in co-relation 106383. Up to 8140 conditions per place. [2024-06-27 23:28:34,705 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 714 selfloop transitions, 152 changer transitions 0/871 dead transitions. [2024-06-27 23:28:34,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 871 transitions, 18178 flow [2024-06-27 23:28:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:34,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:34,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 239 transitions. [2024-06-27 23:28:34,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631782945736434 [2024-06-27 23:28:34,706 INFO L175 Difference]: Start difference. First operand has 418 places, 791 transitions, 14710 flow. Second operand 12 states and 239 transitions. [2024-06-27 23:28:34,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 871 transitions, 18178 flow [2024-06-27 23:28:40,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 871 transitions, 17110 flow, removed 490 selfloop flow, removed 6 redundant places. [2024-06-27 23:28:40,525 INFO L231 Difference]: Finished difference. Result has 425 places, 812 transitions, 14980 flow [2024-06-27 23:28:40,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=14130, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=641, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14980, PETRI_PLACES=425, PETRI_TRANSITIONS=812} [2024-06-27 23:28:40,525 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 381 predicate places. [2024-06-27 23:28:40,525 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 812 transitions, 14980 flow [2024-06-27 23:28:40,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:40,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:40,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:40,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 23:28:40,526 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:40,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:40,526 INFO L85 PathProgramCache]: Analyzing trace with hash -31310652, now seen corresponding path program 7 times [2024-06-27 23:28:40,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:40,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567212795] [2024-06-27 23:28:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:40,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:42,045 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 23:28:42,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:42,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567212795] [2024-06-27 23:28:42,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567212795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:42,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:42,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:28:42,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544159831] [2024-06-27 23:28:42,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:42,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:28:42,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:42,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:28:42,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:28:42,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:28:42,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 812 transitions, 14980 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:42,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:42,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:28:42,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:45,045 INFO L124 PetriNetUnfolderBase]: 6026/9686 cut-off events. [2024-06-27 23:28:45,045 INFO L125 PetriNetUnfolderBase]: For 1216782/1216788 co-relation queries the response was YES. [2024-06-27 23:28:45,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96929 conditions, 9686 events. 6026/9686 cut-off events. For 1216782/1216788 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 64844 event pairs, 1678 based on Foata normal form. 46/9731 useless extension candidates. Maximal degree in co-relation 96761. Up to 8459 conditions per place. [2024-06-27 23:28:45,217 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 714 selfloop transitions, 137 changer transitions 0/856 dead transitions. [2024-06-27 23:28:45,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 856 transitions, 16957 flow [2024-06-27 23:28:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:28:45,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:28:45,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-27 23:28:45,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45665961945031713 [2024-06-27 23:28:45,220 INFO L175 Difference]: Start difference. First operand has 425 places, 812 transitions, 14980 flow. Second operand 11 states and 216 transitions. [2024-06-27 23:28:45,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 856 transitions, 16957 flow [2024-06-27 23:28:48,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 856 transitions, 16661 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-27 23:28:48,499 INFO L231 Difference]: Finished difference. Result has 427 places, 810 transitions, 14955 flow [2024-06-27 23:28:48,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=14657, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14955, PETRI_PLACES=427, PETRI_TRANSITIONS=810} [2024-06-27 23:28:48,500 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 383 predicate places. [2024-06-27 23:28:48,500 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 810 transitions, 14955 flow [2024-06-27 23:28:48,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:48,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:48,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:48,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 23:28:48,501 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:48,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:48,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1320806182, now seen corresponding path program 8 times [2024-06-27 23:28:48,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:48,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064077761] [2024-06-27 23:28:48,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:48,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:28:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:28:50,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:28:50,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064077761] [2024-06-27 23:28:50,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064077761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:28:50,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:28:50,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:28:50,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562984598] [2024-06-27 23:28:50,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:28:50,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:28:50,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:28:50,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:28:50,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:28:50,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:28:50,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 810 transitions, 14955 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:50,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:28:50,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:28:50,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:28:54,006 INFO L124 PetriNetUnfolderBase]: 6336/10215 cut-off events. [2024-06-27 23:28:54,007 INFO L125 PetriNetUnfolderBase]: For 1212311/1212315 co-relation queries the response was YES. [2024-06-27 23:28:54,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100712 conditions, 10215 events. 6336/10215 cut-off events. For 1212311/1212315 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 69365 event pairs, 1680 based on Foata normal form. 28/10242 useless extension candidates. Maximal degree in co-relation 100543. Up to 8557 conditions per place. [2024-06-27 23:28:54,304 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 725 selfloop transitions, 150 changer transitions 0/880 dead transitions. [2024-06-27 23:28:54,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 880 transitions, 17431 flow [2024-06-27 23:28:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 23:28:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 23:28:54,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 237 transitions. [2024-06-27 23:28:54,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45930232558139533 [2024-06-27 23:28:54,305 INFO L175 Difference]: Start difference. First operand has 427 places, 810 transitions, 14955 flow. Second operand 12 states and 237 transitions. [2024-06-27 23:28:54,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 880 transitions, 17431 flow [2024-06-27 23:28:58,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 880 transitions, 17192 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 23:28:58,413 INFO L231 Difference]: Finished difference. Result has 432 places, 826 transitions, 15427 flow [2024-06-27 23:28:58,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=14716, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15427, PETRI_PLACES=432, PETRI_TRANSITIONS=826} [2024-06-27 23:28:58,414 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 388 predicate places. [2024-06-27 23:28:58,414 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 826 transitions, 15427 flow [2024-06-27 23:28:58,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:28:58,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:28:58,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:28:58,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 23:28:58,414 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:28:58,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:28:58,415 INFO L85 PathProgramCache]: Analyzing trace with hash 658145094, now seen corresponding path program 21 times [2024-06-27 23:28:58,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:28:58,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989352883] [2024-06-27 23:28:58,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:28:58,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:28:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:00,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:00,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989352883] [2024-06-27 23:29:00,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989352883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:00,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:00,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:00,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902480406] [2024-06-27 23:29:00,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:00,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:00,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:00,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:00,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:00,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:29:00,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 826 transitions, 15427 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:00,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:00,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:29:00,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:04,382 INFO L124 PetriNetUnfolderBase]: 6643/10691 cut-off events. [2024-06-27 23:29:04,382 INFO L125 PetriNetUnfolderBase]: For 1211504/1211510 co-relation queries the response was YES. [2024-06-27 23:29:04,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105365 conditions, 10691 events. 6643/10691 cut-off events. For 1211504/1211510 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 73243 event pairs, 1880 based on Foata normal form. 10/10699 useless extension candidates. Maximal degree in co-relation 105194. Up to 9177 conditions per place. [2024-06-27 23:29:04,548 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 625 selfloop transitions, 350 changer transitions 0/980 dead transitions. [2024-06-27 23:29:04,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 980 transitions, 19409 flow [2024-06-27 23:29:04,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:29:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:29:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-27 23:29:04,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-27 23:29:04,550 INFO L175 Difference]: Start difference. First operand has 432 places, 826 transitions, 15427 flow. Second operand 11 states and 219 transitions. [2024-06-27 23:29:04,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 980 transitions, 19409 flow [2024-06-27 23:29:08,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 980 transitions, 19093 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-27 23:29:08,756 INFO L231 Difference]: Finished difference. Result has 435 places, 931 transitions, 17704 flow [2024-06-27 23:29:08,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=15111, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17704, PETRI_PLACES=435, PETRI_TRANSITIONS=931} [2024-06-27 23:29:08,757 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 391 predicate places. [2024-06-27 23:29:08,757 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 931 transitions, 17704 flow [2024-06-27 23:29:08,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:08,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:08,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:08,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 23:29:08,757 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:08,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:08,758 INFO L85 PathProgramCache]: Analyzing trace with hash 617666902, now seen corresponding path program 22 times [2024-06-27 23:29:08,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:08,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953653151] [2024-06-27 23:29:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:08,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:10,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:10,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953653151] [2024-06-27 23:29:10,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953653151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:10,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:10,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:10,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316275674] [2024-06-27 23:29:10,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:10,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:10,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:10,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:10,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:10,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:29:10,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 931 transitions, 17704 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:10,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:10,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:29:10,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:14,512 INFO L124 PetriNetUnfolderBase]: 6717/10797 cut-off events. [2024-06-27 23:29:14,512 INFO L125 PetriNetUnfolderBase]: For 1232741/1232747 co-relation queries the response was YES. [2024-06-27 23:29:14,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107383 conditions, 10797 events. 6717/10797 cut-off events. For 1232741/1232747 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 73862 event pairs, 1885 based on Foata normal form. 10/10805 useless extension candidates. Maximal degree in co-relation 107209. Up to 9277 conditions per place. [2024-06-27 23:29:14,881 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 637 selfloop transitions, 356 changer transitions 0/998 dead transitions. [2024-06-27 23:29:14,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 998 transitions, 20402 flow [2024-06-27 23:29:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:29:14,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:29:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-27 23:29:14,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608879492600423 [2024-06-27 23:29:14,883 INFO L175 Difference]: Start difference. First operand has 435 places, 931 transitions, 17704 flow. Second operand 11 states and 218 transitions. [2024-06-27 23:29:14,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 998 transitions, 20402 flow [2024-06-27 23:29:18,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 998 transitions, 19889 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-27 23:29:18,965 INFO L231 Difference]: Finished difference. Result has 442 places, 954 transitions, 18413 flow [2024-06-27 23:29:18,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=17231, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=931, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=333, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18413, PETRI_PLACES=442, PETRI_TRANSITIONS=954} [2024-06-27 23:29:18,966 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 398 predicate places. [2024-06-27 23:29:18,966 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 954 transitions, 18413 flow [2024-06-27 23:29:18,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:18,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:18,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:18,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 23:29:18,967 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:18,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:18,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1074702504, now seen corresponding path program 23 times [2024-06-27 23:29:18,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:18,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913788920] [2024-06-27 23:29:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:18,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:20,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:20,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913788920] [2024-06-27 23:29:20,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913788920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:20,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:20,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:20,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820691626] [2024-06-27 23:29:20,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:20,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:20,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:20,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:20,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:20,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:29:20,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 954 transitions, 18413 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:20,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:20,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:29:20,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:24,906 INFO L124 PetriNetUnfolderBase]: 6781/10908 cut-off events. [2024-06-27 23:29:24,906 INFO L125 PetriNetUnfolderBase]: For 1273715/1273721 co-relation queries the response was YES. [2024-06-27 23:29:25,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108786 conditions, 10908 events. 6781/10908 cut-off events. For 1273715/1273721 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 74790 event pairs, 1882 based on Foata normal form. 10/10916 useless extension candidates. Maximal degree in co-relation 108611. Up to 9197 conditions per place. [2024-06-27 23:29:25,077 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 627 selfloop transitions, 377 changer transitions 0/1009 dead transitions. [2024-06-27 23:29:25,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1009 transitions, 21238 flow [2024-06-27 23:29:25,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:29:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:29:25,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-27 23:29:25,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46723044397463004 [2024-06-27 23:29:25,079 INFO L175 Difference]: Start difference. First operand has 442 places, 954 transitions, 18413 flow. Second operand 11 states and 221 transitions. [2024-06-27 23:29:25,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1009 transitions, 21238 flow [2024-06-27 23:29:29,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 1009 transitions, 20619 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-27 23:29:29,625 INFO L231 Difference]: Finished difference. Result has 448 places, 962 transitions, 18843 flow [2024-06-27 23:29:29,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=17798, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=371, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18843, PETRI_PLACES=448, PETRI_TRANSITIONS=962} [2024-06-27 23:29:29,626 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 404 predicate places. [2024-06-27 23:29:29,626 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 962 transitions, 18843 flow [2024-06-27 23:29:29,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:29,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:29,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:29,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 23:29:29,626 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:29,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:29,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1961050276, now seen corresponding path program 24 times [2024-06-27 23:29:29,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:29,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213015308] [2024-06-27 23:29:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:29,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:31,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:31,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213015308] [2024-06-27 23:29:31,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213015308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:31,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:31,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 23:29:31,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081293828] [2024-06-27 23:29:31,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:31,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 23:29:31,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 23:29:31,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 23:29:31,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 43 [2024-06-27 23:29:31,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 962 transitions, 18843 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:31,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:31,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 43 [2024-06-27 23:29:31,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 23:29:35,836 INFO L124 PetriNetUnfolderBase]: 6773/10886 cut-off events. [2024-06-27 23:29:35,837 INFO L125 PetriNetUnfolderBase]: For 1283989/1283995 co-relation queries the response was YES. [2024-06-27 23:29:35,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108722 conditions, 10886 events. 6773/10886 cut-off events. For 1283989/1283995 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 74535 event pairs, 1892 based on Foata normal form. 10/10894 useless extension candidates. Maximal degree in co-relation 108545. Up to 9365 conditions per place. [2024-06-27 23:29:36,006 INFO L140 encePairwiseOnDemand]: 29/43 looper letters, 649 selfloop transitions, 353 changer transitions 0/1007 dead transitions. [2024-06-27 23:29:36,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1007 transitions, 21126 flow [2024-06-27 23:29:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 23:29:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 23:29:36,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-27 23:29:36,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630021141649049 [2024-06-27 23:29:36,008 INFO L175 Difference]: Start difference. First operand has 448 places, 962 transitions, 18843 flow. Second operand 11 states and 219 transitions. [2024-06-27 23:29:36,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1007 transitions, 21126 flow [2024-06-27 23:29:39,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 1007 transitions, 20563 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-27 23:29:39,998 INFO L231 Difference]: Finished difference. Result has 453 places, 963 transitions, 19032 flow [2024-06-27 23:29:39,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=18282, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=352, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19032, PETRI_PLACES=453, PETRI_TRANSITIONS=963} [2024-06-27 23:29:39,998 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 409 predicate places. [2024-06-27 23:29:39,998 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 963 transitions, 19032 flow [2024-06-27 23:29:39,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:39,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 23:29:39,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 23:29:39,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 23:29:39,999 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 23:29:39,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 23:29:39,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1159696010, now seen corresponding path program 5 times [2024-06-27 23:29:39,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 23:29:39,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314077683] [2024-06-27 23:29:39,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 23:29:39,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 23:29:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 23:29:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 23:29:41,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 23:29:41,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314077683] [2024-06-27 23:29:41,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314077683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 23:29:41,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 23:29:41,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 23:29:41,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566527457] [2024-06-27 23:29:41,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 23:29:41,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 23:29:41,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 23:29:41,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 23:29:41,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 23:29:41,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2024-06-27 23:29:41,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 963 transitions, 19032 flow. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 23:29:41,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 23:29:41,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2024-06-27 23:29:41,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand