./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe021_power.opt_pso.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/safe021_power.opt_pso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe021_power.opt_pso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:51:22,760 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:51:22,810 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:51:22,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:51:22,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:51:22,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:51:22,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:51:22,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:51:22,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:51:22,834 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:51:22,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:51:22,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:51:22,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:51:22,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:51:22,836 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:51:22,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:51:22,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:51:22,837 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:51:22,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:51:22,837 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:51:22,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:51:22,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:51:22,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:51:22,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:51:22,838 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:51:22,839 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:51:22,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:51:22,839 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:51:22,839 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:51:22,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:51:22,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:51:22,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:51:22,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:51:22,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:51:22,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:51:22,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:51:22,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:51:22,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:51:22,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:51:22,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:51:22,842 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:51:22,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:51:22,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:51:22,843 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:51:23,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:51:23,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:51:23,029 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:51:23,030 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:51:23,031 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:51:23,032 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe021_power.opt_pso.opt.yml/witness.yml [2024-06-27 22:51:23,093 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:51:23,093 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:51:23,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.i [2024-06-27 22:51:24,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:51:24,265 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:51:24,265 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.i [2024-06-27 22:51:24,277 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d90d3129/3b92bf3febbc4391a567c0bb7ee56a4b/FLAGbeaf26bbd [2024-06-27 22:51:24,298 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d90d3129/3b92bf3febbc4391a567c0bb7ee56a4b [2024-06-27 22:51:24,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:51:24,299 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:51:24,300 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:51:24,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:51:24,305 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:51:24,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:51:23" (1/2) ... [2024-06-27 22:51:24,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6162a3a2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:51:24, skipping insertion in model container [2024-06-27 22:51:24,307 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:51:23" (1/2) ... [2024-06-27 22:51:24,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1f99003a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:51:24, skipping insertion in model container [2024-06-27 22:51:24,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:51:24" (2/2) ... [2024-06-27 22:51:24,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6162a3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24, skipping insertion in model container [2024-06-27 22:51:24,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:51:24" (2/2) ... [2024-06-27 22:51:24,309 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:51:24,336 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:51:24,337 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:51:24,337 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:51:24,337 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p2_EBX) + (long long )z >= 0LL) && (0LL - (long long )x$r_buff0_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff0 >= 0LL) && (0LL - (long long )x$r_buff1_thd2) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )x$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL - (long long )x) + (long long )x$r_buff0_thd2 >= 0LL) && (1LL - (long long )x) + (long long )x$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p2_EBX >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p2_EBX) - (long long )x$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p2_EBX) - (long long )z >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$r_buff1_thd2 >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff0_used >= 0LL) && (long long )x$r_buff0_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$r_buff1_thd2 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff0_used >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1 >= 0LL) && (long long )x$w_buff0 - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff0_used - (long long )x$w_buff1_used >= 0LL) && (long long )x$w_buff1 - (long long )x$w_buff1_used >= 0LL) [2024-06-27 22:51:24,337 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:51:24,337 INFO L106 edCorrectnessWitness]: ghost_update [L821-L821] multithreaded = 1; [2024-06-27 22:51:24,377 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:51:24,543 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.i[959,972] [2024-06-27 22:51:24,712 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:51:24,724 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:51:24,759 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_power.opt_pso.opt.i[959,972] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:51:24,861 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:51:24,887 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:51:24,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24 WrapperNode [2024-06-27 22:51:24,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:51:24,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:51:24,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:51:24,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:51:24,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (1/1) ... [2024-06-27 22:51:24,906 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (1/1) ... [2024-06-27 22:51:24,954 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2024-06-27 22:51:24,958 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:51:24,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:51:24,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:51:24,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:51:24,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (1/1) ... [2024-06-27 22:51:24,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (1/1) ... [2024-06-27 22:51:24,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (1/1) ... [2024-06-27 22:51:24,998 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 22:51:24,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (1/1) ... [2024-06-27 22:51:24,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (1/1) ... [2024-06-27 22:51:25,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (1/1) ... [2024-06-27 22:51:25,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (1/1) ... [2024-06-27 22:51:25,022 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (1/1) ... [2024-06-27 22:51:25,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (1/1) ... [2024-06-27 22:51:25,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:51:25,027 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:51:25,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:51:25,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:51:25,039 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (1/1) ... [2024-06-27 22:51:25,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:51:25,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:51:25,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:51:25,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:51:25,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:51:25,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:51:25,100 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:51:25,100 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:51:25,100 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:51:25,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:51:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:51:25,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:51:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:51:25,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:51:25,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:51:25,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:51:25,103 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:51:25,245 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:51:25,247 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:51:25,631 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:51:25,632 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:51:25,789 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:51:25,789 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:51:25,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:51:25 BoogieIcfgContainer [2024-06-27 22:51:25,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:51:25,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:51:25,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:51:25,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:51:25,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:51:23" (1/4) ... [2024-06-27 22:51:25,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b302d0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:51:25, skipping insertion in model container [2024-06-27 22:51:25,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:51:24" (2/4) ... [2024-06-27 22:51:25,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b302d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:51:25, skipping insertion in model container [2024-06-27 22:51:25,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:51:24" (3/4) ... [2024-06-27 22:51:25,799 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b302d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:51:25, skipping insertion in model container [2024-06-27 22:51:25,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:51:25" (4/4) ... [2024-06-27 22:51:25,800 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_power.opt_pso.opt.i [2024-06-27 22:51:25,813 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:51:25,813 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:51:25,813 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:51:25,853 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:51:25,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:51:25,915 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-27 22:51:25,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:51:25,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-27 22:51:25,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-27 22:51:25,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-27 22:51:25,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:51:25,947 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;@4daa25f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:51:25,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:51:25,950 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:51:25,950 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:51:25,950 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:51:25,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:25,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:51:25,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:25,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:25,955 INFO L85 PathProgramCache]: Analyzing trace with hash 354753175, now seen corresponding path program 1 times [2024-06-27 22:51:25,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:25,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075172351] [2024-06-27 22:51:25,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:25,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:26,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:26,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075172351] [2024-06-27 22:51:26,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075172351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:26,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:26,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:51:26,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964567194] [2024-06-27 22:51:26,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:26,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:51:26,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:26,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:51:26,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:51:26,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-27 22:51:26,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:26,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:26,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-27 22:51:26,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:27,493 INFO L124 PetriNetUnfolderBase]: 3354/4883 cut-off events. [2024-06-27 22:51:27,493 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-06-27 22:51:27,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9851 conditions, 4883 events. 3354/4883 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 27341 event pairs, 1687 based on Foata normal form. 168/4798 useless extension candidates. Maximal degree in co-relation 9839. Up to 4841 conditions per place. [2024-06-27 22:51:27,520 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 43 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-06-27 22:51:27,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 225 flow [2024-06-27 22:51:27,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:51:27,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:51:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-27 22:51:27,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6884057971014492 [2024-06-27 22:51:27,531 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 95 transitions. [2024-06-27 22:51:27,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 225 flow [2024-06-27 22:51:27,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:51:27,537 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 122 flow [2024-06-27 22:51:27,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-27 22:51:27,542 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-27 22:51:27,543 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 122 flow [2024-06-27 22:51:27,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:27,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:27,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:27,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:51:27,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:27,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:27,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1616673920, now seen corresponding path program 1 times [2024-06-27 22:51:27,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:27,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303151907] [2024-06-27 22:51:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:27,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:28,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:28,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303151907] [2024-06-27 22:51:28,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303151907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:28,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:28,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 22:51:28,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491231406] [2024-06-27 22:51:28,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:28,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 22:51:28,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:28,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 22:51:28,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 22:51:28,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:51:28,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:28,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:28,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:51:28,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:28,828 INFO L124 PetriNetUnfolderBase]: 4153/6084 cut-off events. [2024-06-27 22:51:28,828 INFO L125 PetriNetUnfolderBase]: For 635/635 co-relation queries the response was YES. [2024-06-27 22:51:28,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13551 conditions, 6084 events. 4153/6084 cut-off events. For 635/635 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 33909 event pairs, 2324 based on Foata normal form. 3/5828 useless extension candidates. Maximal degree in co-relation 13539. Up to 5940 conditions per place. [2024-06-27 22:51:28,856 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 58 selfloop transitions, 7 changer transitions 0/75 dead transitions. [2024-06-27 22:51:28,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 75 transitions, 328 flow [2024-06-27 22:51:28,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 22:51:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 22:51:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-27 22:51:28,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6413043478260869 [2024-06-27 22:51:28,858 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 122 flow. Second operand 4 states and 118 transitions. [2024-06-27 22:51:28,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 75 transitions, 328 flow [2024-06-27 22:51:28,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 75 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:51:28,862 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 176 flow [2024-06-27 22:51:28,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-27 22:51:28,863 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2024-06-27 22:51:28,863 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 176 flow [2024-06-27 22:51:28,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:28,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:28,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:28,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:51:28,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:28,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:28,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1422714426, now seen corresponding path program 1 times [2024-06-27 22:51:28,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:28,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635538280] [2024-06-27 22:51:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:28,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:29,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:29,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635538280] [2024-06-27 22:51:29,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635538280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:29,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:29,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:51:29,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591744743] [2024-06-27 22:51:29,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:29,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:51:29,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:29,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:51:29,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:51:29,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:51:29,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 176 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 22:51:29,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:29,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:51:29,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:30,245 INFO L124 PetriNetUnfolderBase]: 4095/6521 cut-off events. [2024-06-27 22:51:30,246 INFO L125 PetriNetUnfolderBase]: For 2170/2178 co-relation queries the response was YES. [2024-06-27 22:51:30,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15199 conditions, 6521 events. 4095/6521 cut-off events. For 2170/2178 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 40504 event pairs, 2064 based on Foata normal form. 12/6119 useless extension candidates. Maximal degree in co-relation 15184. Up to 5829 conditions per place. [2024-06-27 22:51:30,275 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 68 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-06-27 22:51:30,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 91 transitions, 461 flow [2024-06-27 22:51:30,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:51:30,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:51:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-06-27 22:51:30,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6130434782608696 [2024-06-27 22:51:30,278 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 176 flow. Second operand 5 states and 141 transitions. [2024-06-27 22:51:30,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 91 transitions, 461 flow [2024-06-27 22:51:30,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 91 transitions, 457 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 22:51:30,282 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 296 flow [2024-06-27 22:51:30,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-06-27 22:51:30,283 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-06-27 22:51:30,283 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 296 flow [2024-06-27 22:51:30,283 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 22:51:30,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:30,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:30,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:51:30,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:30,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:30,284 INFO L85 PathProgramCache]: Analyzing trace with hash 294190031, now seen corresponding path program 1 times [2024-06-27 22:51:30,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:30,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853211496] [2024-06-27 22:51:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:30,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:31,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:31,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853211496] [2024-06-27 22:51:31,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853211496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:31,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:31,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:31,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223988381] [2024-06-27 22:51:31,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:31,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:31,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:31,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:31,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:31,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-27 22:51:31,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:31,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:31,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-27 22:51:31,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:31,899 INFO L124 PetriNetUnfolderBase]: 4049/6451 cut-off events. [2024-06-27 22:51:31,899 INFO L125 PetriNetUnfolderBase]: For 4101/4121 co-relation queries the response was YES. [2024-06-27 22:51:31,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16522 conditions, 6451 events. 4049/6451 cut-off events. For 4101/4121 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 40015 event pairs, 1654 based on Foata normal form. 18/6073 useless extension candidates. Maximal degree in co-relation 16502. Up to 5721 conditions per place. [2024-06-27 22:51:31,927 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 74 selfloop transitions, 16 changer transitions 0/100 dead transitions. [2024-06-27 22:51:31,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 100 transitions, 570 flow [2024-06-27 22:51:31,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:51:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:51:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-06-27 22:51:31,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5905797101449275 [2024-06-27 22:51:31,929 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 296 flow. Second operand 6 states and 163 transitions. [2024-06-27 22:51:31,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 100 transitions, 570 flow [2024-06-27 22:51:31,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 564 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-27 22:51:31,935 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 348 flow [2024-06-27 22:51:31,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-06-27 22:51:31,936 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2024-06-27 22:51:31,936 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 348 flow [2024-06-27 22:51:31,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:31,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:31,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:31,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:51:31,937 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:31,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:31,937 INFO L85 PathProgramCache]: Analyzing trace with hash -802234893, now seen corresponding path program 1 times [2024-06-27 22:51:31,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:31,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144583359] [2024-06-27 22:51:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:31,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:32,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:32,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144583359] [2024-06-27 22:51:32,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144583359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:32,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:32,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:51:32,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325230082] [2024-06-27 22:51:32,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:32,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:51:32,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:32,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:51:32,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:51:32,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:51:32,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 348 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:32,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:32,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:51:32,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:33,427 INFO L124 PetriNetUnfolderBase]: 4556/7253 cut-off events. [2024-06-27 22:51:33,427 INFO L125 PetriNetUnfolderBase]: For 7208/7232 co-relation queries the response was YES. [2024-06-27 22:51:33,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19655 conditions, 7253 events. 4556/7253 cut-off events. For 7208/7232 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 45091 event pairs, 3164 based on Foata normal form. 7/6824 useless extension candidates. Maximal degree in co-relation 19631. Up to 6500 conditions per place. [2024-06-27 22:51:33,456 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 70 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-06-27 22:51:33,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 638 flow [2024-06-27 22:51:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:51:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:51:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-27 22:51:33,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601449275362319 [2024-06-27 22:51:33,459 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 348 flow. Second operand 6 states and 127 transitions. [2024-06-27 22:51:33,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 638 flow [2024-06-27 22:51:33,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 93 transitions, 590 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 22:51:33,469 INFO L231 Difference]: Finished difference. Result has 72 places, 78 transitions, 449 flow [2024-06-27 22:51:33,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=449, PETRI_PLACES=72, PETRI_TRANSITIONS=78} [2024-06-27 22:51:33,471 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-06-27 22:51:33,475 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 78 transitions, 449 flow [2024-06-27 22:51:33,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:33,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:33,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:33,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:51:33,475 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:33,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:33,476 INFO L85 PathProgramCache]: Analyzing trace with hash 900522926, now seen corresponding path program 1 times [2024-06-27 22:51:33,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:33,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658971177] [2024-06-27 22:51:33,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:33,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:34,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:34,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658971177] [2024-06-27 22:51:34,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658971177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:34,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:34,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:34,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62874212] [2024-06-27 22:51:34,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:34,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:34,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:34,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:34,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:34,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:51:34,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 78 transitions, 449 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:34,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:34,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:51:34,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:35,383 INFO L124 PetriNetUnfolderBase]: 5388/8513 cut-off events. [2024-06-27 22:51:35,383 INFO L125 PetriNetUnfolderBase]: For 10401/10401 co-relation queries the response was YES. [2024-06-27 22:51:35,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24467 conditions, 8513 events. 5388/8513 cut-off events. For 10401/10401 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 53067 event pairs, 3738 based on Foata normal form. 2/8045 useless extension candidates. Maximal degree in co-relation 24439. Up to 7660 conditions per place. [2024-06-27 22:51:35,422 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 87 selfloop transitions, 16 changer transitions 0/110 dead transitions. [2024-06-27 22:51:35,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 110 transitions, 772 flow [2024-06-27 22:51:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:35,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-27 22:51:35,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-06-27 22:51:35,424 INFO L175 Difference]: Start difference. First operand has 72 places, 78 transitions, 449 flow. Second operand 7 states and 140 transitions. [2024-06-27 22:51:35,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 110 transitions, 772 flow [2024-06-27 22:51:35,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 110 transitions, 760 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 22:51:35,434 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 577 flow [2024-06-27 22:51:35,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=577, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2024-06-27 22:51:35,436 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2024-06-27 22:51:35,436 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 577 flow [2024-06-27 22:51:35,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:35,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:35,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:35,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:51:35,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:35,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:35,437 INFO L85 PathProgramCache]: Analyzing trace with hash 51928942, now seen corresponding path program 1 times [2024-06-27 22:51:35,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:35,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753701493] [2024-06-27 22:51:35,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:35,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:36,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:36,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753701493] [2024-06-27 22:51:36,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753701493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:36,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:36,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:36,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626771678] [2024-06-27 22:51:36,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:36,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:36,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:36,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:36,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:36,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:51:36,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:36,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:36,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:51:36,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:37,008 INFO L124 PetriNetUnfolderBase]: 5286/8381 cut-off events. [2024-06-27 22:51:37,008 INFO L125 PetriNetUnfolderBase]: For 15560/15595 co-relation queries the response was YES. [2024-06-27 22:51:37,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26452 conditions, 8381 events. 5286/8381 cut-off events. For 15560/15595 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 52995 event pairs, 3208 based on Foata normal form. 22/7907 useless extension candidates. Maximal degree in co-relation 26419. Up to 7498 conditions per place. [2024-06-27 22:51:37,055 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 98 selfloop transitions, 25 changer transitions 0/134 dead transitions. [2024-06-27 22:51:37,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 134 transitions, 1000 flow [2024-06-27 22:51:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:37,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 22:51:37,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-27 22:51:37,056 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 577 flow. Second operand 7 states and 159 transitions. [2024-06-27 22:51:37,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 134 transitions, 1000 flow [2024-06-27 22:51:37,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 134 transitions, 989 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:37,070 INFO L231 Difference]: Finished difference. Result has 87 places, 107 transitions, 777 flow [2024-06-27 22:51:37,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=777, PETRI_PLACES=87, PETRI_TRANSITIONS=107} [2024-06-27 22:51:37,071 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-06-27 22:51:37,071 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 107 transitions, 777 flow [2024-06-27 22:51:37,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:37,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:37,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:37,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:51:37,072 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:37,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash 659595810, now seen corresponding path program 2 times [2024-06-27 22:51:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610691402] [2024-06-27 22:51:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:37,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:37,767 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 22:51:37,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:37,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610691402] [2024-06-27 22:51:37,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610691402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:37,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:37,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:37,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834360272] [2024-06-27 22:51:37,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:37,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:37,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:37,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:37,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:37,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:51:37,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 107 transitions, 777 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:37,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:37,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:51:37,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:38,714 INFO L124 PetriNetUnfolderBase]: 5273/8371 cut-off events. [2024-06-27 22:51:38,714 INFO L125 PetriNetUnfolderBase]: For 21524/21602 co-relation queries the response was YES. [2024-06-27 22:51:38,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28551 conditions, 8371 events. 5273/8371 cut-off events. For 21524/21602 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 52824 event pairs, 3178 based on Foata normal form. 39/7910 useless extension candidates. Maximal degree in co-relation 28514. Up to 7468 conditions per place. [2024-06-27 22:51:38,764 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 97 selfloop transitions, 32 changer transitions 0/140 dead transitions. [2024-06-27 22:51:38,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 140 transitions, 1215 flow [2024-06-27 22:51:38,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:38,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-27 22:51:38,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46273291925465837 [2024-06-27 22:51:38,766 INFO L175 Difference]: Start difference. First operand has 87 places, 107 transitions, 777 flow. Second operand 7 states and 149 transitions. [2024-06-27 22:51:38,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 140 transitions, 1215 flow [2024-06-27 22:51:38,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 140 transitions, 1165 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-27 22:51:38,788 INFO L231 Difference]: Finished difference. Result has 93 places, 120 transitions, 941 flow [2024-06-27 22:51:38,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=941, PETRI_PLACES=93, PETRI_TRANSITIONS=120} [2024-06-27 22:51:38,789 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-06-27 22:51:38,789 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 120 transitions, 941 flow [2024-06-27 22:51:38,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:38,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:38,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:38,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:51:38,790 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:38,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:38,790 INFO L85 PathProgramCache]: Analyzing trace with hash -984931970, now seen corresponding path program 3 times [2024-06-27 22:51:38,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:38,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630139565] [2024-06-27 22:51:38,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:38,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:39,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:39,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630139565] [2024-06-27 22:51:39,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630139565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:39,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:39,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:51:39,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590560771] [2024-06-27 22:51:39,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:39,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:51:39,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:39,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:51:39,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:51:39,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:51:39,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 120 transitions, 941 flow. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:39,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:39,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:51:39,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:40,552 INFO L124 PetriNetUnfolderBase]: 5369/8540 cut-off events. [2024-06-27 22:51:40,552 INFO L125 PetriNetUnfolderBase]: For 28921/29007 co-relation queries the response was YES. [2024-06-27 22:51:40,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30971 conditions, 8540 events. 5369/8540 cut-off events. For 28921/29007 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 54103 event pairs, 3226 based on Foata normal form. 43/8079 useless extension candidates. Maximal degree in co-relation 30931. Up to 7543 conditions per place. [2024-06-27 22:51:40,596 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 91 selfloop transitions, 45 changer transitions 0/147 dead transitions. [2024-06-27 22:51:40,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 147 transitions, 1334 flow [2024-06-27 22:51:40,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:51:40,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:51:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 22:51:40,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:51:40,598 INFO L175 Difference]: Start difference. First operand has 93 places, 120 transitions, 941 flow. Second operand 6 states and 138 transitions. [2024-06-27 22:51:40,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 147 transitions, 1334 flow [2024-06-27 22:51:40,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 147 transitions, 1291 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:40,621 INFO L231 Difference]: Finished difference. Result has 98 places, 127 transitions, 1097 flow [2024-06-27 22:51:40,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1097, PETRI_PLACES=98, PETRI_TRANSITIONS=127} [2024-06-27 22:51:40,622 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 46 predicate places. [2024-06-27 22:51:40,622 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 127 transitions, 1097 flow [2024-06-27 22:51:40,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:40,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:40,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:40,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:51:40,622 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:40,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:40,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2146407794, now seen corresponding path program 1 times [2024-06-27 22:51:40,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:40,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861448925] [2024-06-27 22:51:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:40,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:41,799 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 22:51:41,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:41,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861448925] [2024-06-27 22:51:41,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861448925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:41,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:41,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:41,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559447370] [2024-06-27 22:51:41,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:41,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:41,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:41,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:41,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:41,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:51:41,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 127 transitions, 1097 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:41,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:41,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:51:41,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:42,958 INFO L124 PetriNetUnfolderBase]: 5498/8717 cut-off events. [2024-06-27 22:51:42,959 INFO L125 PetriNetUnfolderBase]: For 30978/31341 co-relation queries the response was YES. [2024-06-27 22:51:42,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31463 conditions, 8717 events. 5498/8717 cut-off events. For 30978/31341 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 55653 event pairs, 3471 based on Foata normal form. 14/8114 useless extension candidates. Maximal degree in co-relation 31420. Up to 7647 conditions per place. [2024-06-27 22:51:43,011 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 115 selfloop transitions, 32 changer transitions 0/170 dead transitions. [2024-06-27 22:51:43,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 170 transitions, 1586 flow [2024-06-27 22:51:43,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:43,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 22:51:43,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2024-06-27 22:51:43,015 INFO L175 Difference]: Start difference. First operand has 98 places, 127 transitions, 1097 flow. Second operand 7 states and 160 transitions. [2024-06-27 22:51:43,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 170 transitions, 1586 flow [2024-06-27 22:51:43,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 170 transitions, 1488 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 22:51:43,047 INFO L231 Difference]: Finished difference. Result has 105 places, 144 transitions, 1241 flow [2024-06-27 22:51:43,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1241, PETRI_PLACES=105, PETRI_TRANSITIONS=144} [2024-06-27 22:51:43,048 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 53 predicate places. [2024-06-27 22:51:43,048 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 144 transitions, 1241 flow [2024-06-27 22:51:43,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:43,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:43,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:43,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:51:43,061 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:43,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:43,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1850678760, now seen corresponding path program 1 times [2024-06-27 22:51:43,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:43,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160887919] [2024-06-27 22:51:43,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:43,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:43,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:43,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:43,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160887919] [2024-06-27 22:51:43,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160887919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:43,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:43,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:43,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936660317] [2024-06-27 22:51:43,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:43,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:43,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:43,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:43,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:43,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:51:43,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 144 transitions, 1241 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:43,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:43,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:51:43,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:44,848 INFO L124 PetriNetUnfolderBase]: 5298/8286 cut-off events. [2024-06-27 22:51:44,848 INFO L125 PetriNetUnfolderBase]: For 41117/41297 co-relation queries the response was YES. [2024-06-27 22:51:44,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33945 conditions, 8286 events. 5298/8286 cut-off events. For 41117/41297 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 51209 event pairs, 2186 based on Foata normal form. 65/7824 useless extension candidates. Maximal degree in co-relation 33897. Up to 7402 conditions per place. [2024-06-27 22:51:44,887 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 134 selfloop transitions, 49 changer transitions 0/198 dead transitions. [2024-06-27 22:51:44,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 198 transitions, 1848 flow [2024-06-27 22:51:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:51:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:51:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-27 22:51:44,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-27 22:51:44,889 INFO L175 Difference]: Start difference. First operand has 105 places, 144 transitions, 1241 flow. Second operand 8 states and 188 transitions. [2024-06-27 22:51:44,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 198 transitions, 1848 flow [2024-06-27 22:51:44,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 198 transitions, 1799 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-27 22:51:44,921 INFO L231 Difference]: Finished difference. Result has 113 places, 162 transitions, 1461 flow [2024-06-27 22:51:44,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1461, PETRI_PLACES=113, PETRI_TRANSITIONS=162} [2024-06-27 22:51:44,922 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 61 predicate places. [2024-06-27 22:51:44,922 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 162 transitions, 1461 flow [2024-06-27 22:51:44,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:44,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:44,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:44,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:51:44,923 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:44,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:44,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1570871738, now seen corresponding path program 2 times [2024-06-27 22:51:44,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:44,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241557318] [2024-06-27 22:51:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:44,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:45,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:45,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241557318] [2024-06-27 22:51:45,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241557318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:45,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:45,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:45,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821746469] [2024-06-27 22:51:45,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:45,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:45,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:45,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:45,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:45,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:51:45,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 162 transitions, 1461 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:45,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:45,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:51:45,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:46,831 INFO L124 PetriNetUnfolderBase]: 5409/8430 cut-off events. [2024-06-27 22:51:46,831 INFO L125 PetriNetUnfolderBase]: For 50877/51246 co-relation queries the response was YES. [2024-06-27 22:51:46,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36778 conditions, 8430 events. 5409/8430 cut-off events. For 50877/51246 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 51732 event pairs, 2352 based on Foata normal form. 91/7993 useless extension candidates. Maximal degree in co-relation 36726. Up to 7508 conditions per place. [2024-06-27 22:51:46,883 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 143 selfloop transitions, 70 changer transitions 0/228 dead transitions. [2024-06-27 22:51:46,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 228 transitions, 2325 flow [2024-06-27 22:51:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:51:46,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:51:46,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 22:51:46,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-27 22:51:46,885 INFO L175 Difference]: Start difference. First operand has 113 places, 162 transitions, 1461 flow. Second operand 8 states and 190 transitions. [2024-06-27 22:51:46,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 228 transitions, 2325 flow [2024-06-27 22:51:46,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 228 transitions, 2157 flow, removed 76 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:46,941 INFO L231 Difference]: Finished difference. Result has 122 places, 193 transitions, 1869 flow [2024-06-27 22:51:46,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1869, PETRI_PLACES=122, PETRI_TRANSITIONS=193} [2024-06-27 22:51:46,942 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-06-27 22:51:46,942 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 193 transitions, 1869 flow [2024-06-27 22:51:46,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:46,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:46,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:46,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:51:46,943 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:46,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:46,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1570992855, now seen corresponding path program 1 times [2024-06-27 22:51:46,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:46,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848765731] [2024-06-27 22:51:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:46,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:47,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:47,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:47,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848765731] [2024-06-27 22:51:47,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848765731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:47,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:47,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:47,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284237964] [2024-06-27 22:51:47,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:47,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:47,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:47,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:47,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:47,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:51:47,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 193 transitions, 1869 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:47,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:47,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:51:47,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:48,872 INFO L124 PetriNetUnfolderBase]: 5786/9027 cut-off events. [2024-06-27 22:51:48,872 INFO L125 PetriNetUnfolderBase]: For 57805/57805 co-relation queries the response was YES. [2024-06-27 22:51:48,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40051 conditions, 9027 events. 5786/9027 cut-off events. For 57805/57805 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 55288 event pairs, 2963 based on Foata normal form. 2/8567 useless extension candidates. Maximal degree in co-relation 39994. Up to 8159 conditions per place. [2024-06-27 22:51:48,927 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 209 selfloop transitions, 33 changer transitions 0/249 dead transitions. [2024-06-27 22:51:48,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 249 transitions, 2727 flow [2024-06-27 22:51:48,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:51:48,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:51:48,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-27 22:51:48,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701086956521739 [2024-06-27 22:51:48,930 INFO L175 Difference]: Start difference. First operand has 122 places, 193 transitions, 1869 flow. Second operand 8 states and 173 transitions. [2024-06-27 22:51:48,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 249 transitions, 2727 flow [2024-06-27 22:51:48,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 249 transitions, 2598 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-27 22:51:48,985 INFO L231 Difference]: Finished difference. Result has 130 places, 216 transitions, 2145 flow [2024-06-27 22:51:48,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1759, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2145, PETRI_PLACES=130, PETRI_TRANSITIONS=216} [2024-06-27 22:51:48,985 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 78 predicate places. [2024-06-27 22:51:48,985 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 216 transitions, 2145 flow [2024-06-27 22:51:48,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:48,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:48,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:48,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:51:48,986 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:48,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:48,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1608529298, now seen corresponding path program 3 times [2024-06-27 22:51:48,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:48,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381718175] [2024-06-27 22:51:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:48,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:49,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:49,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381718175] [2024-06-27 22:51:49,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381718175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:49,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:49,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:49,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218875002] [2024-06-27 22:51:49,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:49,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:49,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:49,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:49,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:49,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:51:49,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 216 transitions, 2145 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:49,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:49,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:51:49,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:51,034 INFO L124 PetriNetUnfolderBase]: 5625/8759 cut-off events. [2024-06-27 22:51:51,034 INFO L125 PetriNetUnfolderBase]: For 72114/72346 co-relation queries the response was YES. [2024-06-27 22:51:51,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42044 conditions, 8759 events. 5625/8759 cut-off events. For 72114/72346 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 53849 event pairs, 2296 based on Foata normal form. 46/8259 useless extension candidates. Maximal degree in co-relation 41983. Up to 7602 conditions per place. [2024-06-27 22:51:51,100 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 161 selfloop transitions, 85 changer transitions 0/265 dead transitions. [2024-06-27 22:51:51,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 265 transitions, 2977 flow [2024-06-27 22:51:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:51:51,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:51:51,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 22:51:51,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244565217391305 [2024-06-27 22:51:51,101 INFO L175 Difference]: Start difference. First operand has 130 places, 216 transitions, 2145 flow. Second operand 8 states and 193 transitions. [2024-06-27 22:51:51,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 265 transitions, 2977 flow [2024-06-27 22:51:51,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 265 transitions, 2933 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:51,162 INFO L231 Difference]: Finished difference. Result has 137 places, 226 transitions, 2466 flow [2024-06-27 22:51:51,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2101, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2466, PETRI_PLACES=137, PETRI_TRANSITIONS=226} [2024-06-27 22:51:51,162 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 85 predicate places. [2024-06-27 22:51:51,163 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 226 transitions, 2466 flow [2024-06-27 22:51:51,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:51,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:51,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:51,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:51:51,163 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:51,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1935681042, now seen corresponding path program 4 times [2024-06-27 22:51:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:51,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116798491] [2024-06-27 22:51:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:51,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:51,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:51,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:51,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116798491] [2024-06-27 22:51:51,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116798491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:51,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:51,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:51,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293016912] [2024-06-27 22:51:51,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:51,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:51,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:51,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:51,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:51,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:51:51,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 226 transitions, 2466 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:51,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:51,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:51:51,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:53,210 INFO L124 PetriNetUnfolderBase]: 5749/8940 cut-off events. [2024-06-27 22:51:53,210 INFO L125 PetriNetUnfolderBase]: For 90572/90946 co-relation queries the response was YES. [2024-06-27 22:51:53,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46213 conditions, 8940 events. 5749/8940 cut-off events. For 90572/90946 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 55082 event pairs, 2010 based on Foata normal form. 84/8463 useless extension candidates. Maximal degree in co-relation 46149. Up to 7873 conditions per place. [2024-06-27 22:51:53,266 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 179 selfloop transitions, 98 changer transitions 0/296 dead transitions. [2024-06-27 22:51:53,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 296 transitions, 3580 flow [2024-06-27 22:51:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:51:53,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:51:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 22:51:53,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 22:51:53,267 INFO L175 Difference]: Start difference. First operand has 137 places, 226 transitions, 2466 flow. Second operand 7 states and 170 transitions. [2024-06-27 22:51:53,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 296 transitions, 3580 flow [2024-06-27 22:51:53,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 296 transitions, 3364 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-27 22:51:53,355 INFO L231 Difference]: Finished difference. Result has 141 places, 267 transitions, 3041 flow [2024-06-27 22:51:53,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3041, PETRI_PLACES=141, PETRI_TRANSITIONS=267} [2024-06-27 22:51:53,355 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 89 predicate places. [2024-06-27 22:51:53,356 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 267 transitions, 3041 flow [2024-06-27 22:51:53,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:53,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:53,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:53,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:51:53,356 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:53,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:53,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1027365537, now seen corresponding path program 2 times [2024-06-27 22:51:53,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:53,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24190869] [2024-06-27 22:51:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:53,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:54,075 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 22:51:54,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:54,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24190869] [2024-06-27 22:51:54,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24190869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:54,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:54,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:54,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460823359] [2024-06-27 22:51:54,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:54,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:54,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:54,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:54,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:54,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:51:54,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 267 transitions, 3041 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:54,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:54,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:51:54,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:55,622 INFO L124 PetriNetUnfolderBase]: 6130/9524 cut-off events. [2024-06-27 22:51:55,622 INFO L125 PetriNetUnfolderBase]: For 93595/93598 co-relation queries the response was YES. [2024-06-27 22:51:55,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48745 conditions, 9524 events. 6130/9524 cut-off events. For 93595/93598 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 58483 event pairs, 2916 based on Foata normal form. 4/9056 useless extension candidates. Maximal degree in co-relation 48677. Up to 8620 conditions per place. [2024-06-27 22:51:55,687 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 263 selfloop transitions, 37 changer transitions 0/307 dead transitions. [2024-06-27 22:51:55,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 307 transitions, 3845 flow [2024-06-27 22:51:55,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:51:55,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:51:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-27 22:51:55,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429347826086957 [2024-06-27 22:51:55,689 INFO L175 Difference]: Start difference. First operand has 141 places, 267 transitions, 3041 flow. Second operand 8 states and 163 transitions. [2024-06-27 22:51:55,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 307 transitions, 3845 flow [2024-06-27 22:51:55,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 307 transitions, 3730 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-27 22:51:55,809 INFO L231 Difference]: Finished difference. Result has 149 places, 281 transitions, 3160 flow [2024-06-27 22:51:55,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3160, PETRI_PLACES=149, PETRI_TRANSITIONS=281} [2024-06-27 22:51:55,810 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-06-27 22:51:55,810 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 281 transitions, 3160 flow [2024-06-27 22:51:55,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:55,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:55,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:55,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:51:55,810 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:55,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1935801942, now seen corresponding path program 5 times [2024-06-27 22:51:55,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:55,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808450474] [2024-06-27 22:51:55,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:55,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:56,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:56,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808450474] [2024-06-27 22:51:56,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808450474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:56,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:56,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:56,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137847910] [2024-06-27 22:51:56,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:56,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:56,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:56,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:56,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:51:56,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 281 transitions, 3160 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:56,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:56,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:51:56,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:51:57,987 INFO L124 PetriNetUnfolderBase]: 5949/9225 cut-off events. [2024-06-27 22:51:57,987 INFO L125 PetriNetUnfolderBase]: For 114794/115155 co-relation queries the response was YES. [2024-06-27 22:51:58,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51085 conditions, 9225 events. 5949/9225 cut-off events. For 114794/115155 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 56725 event pairs, 2011 based on Foata normal form. 84/8741 useless extension candidates. Maximal degree in co-relation 51013. Up to 8011 conditions per place. [2024-06-27 22:51:58,066 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 190 selfloop transitions, 120 changer transitions 0/334 dead transitions. [2024-06-27 22:51:58,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 334 transitions, 4264 flow [2024-06-27 22:51:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:51:58,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:51:58,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-27 22:51:58,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:51:58,068 INFO L175 Difference]: Start difference. First operand has 149 places, 281 transitions, 3160 flow. Second operand 8 states and 184 transitions. [2024-06-27 22:51:58,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 334 transitions, 4264 flow [2024-06-27 22:51:58,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 334 transitions, 4220 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 22:51:58,216 INFO L231 Difference]: Finished difference. Result has 156 places, 303 transitions, 3773 flow [2024-06-27 22:51:58,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3773, PETRI_PLACES=156, PETRI_TRANSITIONS=303} [2024-06-27 22:51:58,216 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 104 predicate places. [2024-06-27 22:51:58,216 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 303 transitions, 3773 flow [2024-06-27 22:51:58,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:58,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:51:58,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:51:58,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:51:58,217 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:51:58,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:51:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2113856239, now seen corresponding path program 3 times [2024-06-27 22:51:58,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:51:58,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369454018] [2024-06-27 22:51:58,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:51:58,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:51:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:51:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:51:59,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:51:59,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369454018] [2024-06-27 22:51:59,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369454018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:51:59,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:51:59,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:51:59,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009250729] [2024-06-27 22:51:59,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:51:59,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:51:59,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:51:59,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:51:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:51:59,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:51:59,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 303 transitions, 3773 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:51:59,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:51:59,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:51:59,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:00,519 INFO L124 PetriNetUnfolderBase]: 6322/9761 cut-off events. [2024-06-27 22:52:00,519 INFO L125 PetriNetUnfolderBase]: For 127643/127649 co-relation queries the response was YES. [2024-06-27 22:52:00,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55270 conditions, 9761 events. 6322/9761 cut-off events. For 127643/127649 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 59380 event pairs, 2941 based on Foata normal form. 6/9301 useless extension candidates. Maximal degree in co-relation 55195. Up to 8787 conditions per place. [2024-06-27 22:52:00,602 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 276 selfloop transitions, 59 changer transitions 0/342 dead transitions. [2024-06-27 22:52:00,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 342 transitions, 4749 flow [2024-06-27 22:52:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:52:00,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:52:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 167 transitions. [2024-06-27 22:52:00,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453804347826087 [2024-06-27 22:52:00,604 INFO L175 Difference]: Start difference. First operand has 156 places, 303 transitions, 3773 flow. Second operand 8 states and 167 transitions. [2024-06-27 22:52:00,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 342 transitions, 4749 flow [2024-06-27 22:52:00,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 342 transitions, 4632 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-06-27 22:52:00,792 INFO L231 Difference]: Finished difference. Result has 162 places, 314 transitions, 3946 flow [2024-06-27 22:52:00,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3656, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3946, PETRI_PLACES=162, PETRI_TRANSITIONS=314} [2024-06-27 22:52:00,793 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 110 predicate places. [2024-06-27 22:52:00,793 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 314 transitions, 3946 flow [2024-06-27 22:52:00,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:00,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:00,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:00,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:52:00,794 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:00,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:00,794 INFO L85 PathProgramCache]: Analyzing trace with hash 2113856022, now seen corresponding path program 6 times [2024-06-27 22:52:00,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:00,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761273831] [2024-06-27 22:52:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:00,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:01,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:01,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761273831] [2024-06-27 22:52:01,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761273831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:01,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:01,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:52:01,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596056784] [2024-06-27 22:52:01,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:01,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:52:01,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:01,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:52:01,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:52:01,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:52:01,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 314 transitions, 3946 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:01,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:01,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:52:01,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:03,058 INFO L124 PetriNetUnfolderBase]: 6069/9417 cut-off events. [2024-06-27 22:52:03,058 INFO L125 PetriNetUnfolderBase]: For 149371/149794 co-relation queries the response was YES. [2024-06-27 22:52:03,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57116 conditions, 9417 events. 6069/9417 cut-off events. For 149371/149794 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 57838 event pairs, 2076 based on Foata normal form. 106/8890 useless extension candidates. Maximal degree in co-relation 57038. Up to 7962 conditions per place. [2024-06-27 22:52:03,137 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 171 selfloop transitions, 169 changer transitions 0/366 dead transitions. [2024-06-27 22:52:03,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 366 transitions, 5209 flow [2024-06-27 22:52:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:52:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:52:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-27 22:52:03,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945652173913043 [2024-06-27 22:52:03,138 INFO L175 Difference]: Start difference. First operand has 162 places, 314 transitions, 3946 flow. Second operand 8 states and 182 transitions. [2024-06-27 22:52:03,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 366 transitions, 5209 flow [2024-06-27 22:52:03,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 366 transitions, 5045 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 22:52:03,338 INFO L231 Difference]: Finished difference. Result has 167 places, 337 transitions, 4686 flow [2024-06-27 22:52:03,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3782, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4686, PETRI_PLACES=167, PETRI_TRANSITIONS=337} [2024-06-27 22:52:03,339 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 115 predicate places. [2024-06-27 22:52:03,339 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 337 transitions, 4686 flow [2024-06-27 22:52:03,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:03,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:03,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:03,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:52:03,340 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:03,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:03,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2114123149, now seen corresponding path program 4 times [2024-06-27 22:52:03,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:03,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479638943] [2024-06-27 22:52:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:03,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:04,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:04,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479638943] [2024-06-27 22:52:04,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479638943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:04,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:04,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:52:04,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915440639] [2024-06-27 22:52:04,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:04,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:52:04,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:04,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:52:04,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:52:04,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:52:04,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 337 transitions, 4686 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:04,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:04,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:52:04,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:05,624 INFO L124 PetriNetUnfolderBase]: 6386/9851 cut-off events. [2024-06-27 22:52:05,624 INFO L125 PetriNetUnfolderBase]: For 157820/157826 co-relation queries the response was YES. [2024-06-27 22:52:05,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60287 conditions, 9851 events. 6386/9851 cut-off events. For 157820/157826 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 59857 event pairs, 2964 based on Foata normal form. 6/9390 useless extension candidates. Maximal degree in co-relation 60206. Up to 8875 conditions per place. [2024-06-27 22:52:05,707 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 294 selfloop transitions, 63 changer transitions 0/364 dead transitions. [2024-06-27 22:52:05,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 364 transitions, 5499 flow [2024-06-27 22:52:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:52:05,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:52:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 22:52:05,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 22:52:05,709 INFO L175 Difference]: Start difference. First operand has 167 places, 337 transitions, 4686 flow. Second operand 7 states and 154 transitions. [2024-06-27 22:52:05,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 364 transitions, 5499 flow [2024-06-27 22:52:06,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 364 transitions, 5226 flow, removed 103 selfloop flow, removed 3 redundant places. [2024-06-27 22:52:06,030 INFO L231 Difference]: Finished difference. Result has 171 places, 338 transitions, 4553 flow [2024-06-27 22:52:06,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4413, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4553, PETRI_PLACES=171, PETRI_TRANSITIONS=338} [2024-06-27 22:52:06,030 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 119 predicate places. [2024-06-27 22:52:06,030 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 338 transitions, 4553 flow [2024-06-27 22:52:06,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:06,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:06,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:06,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:52:06,031 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:06,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:06,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2114133069, now seen corresponding path program 1 times [2024-06-27 22:52:06,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:06,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470504002] [2024-06-27 22:52:06,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:06,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:07,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:07,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470504002] [2024-06-27 22:52:07,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470504002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:07,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:07,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:52:07,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585442937] [2024-06-27 22:52:07,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:07,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:52:07,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:07,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:52:07,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:52:07,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:52:07,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 338 transitions, 4553 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:07,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:07,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:52:07,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:09,070 INFO L124 PetriNetUnfolderBase]: 6374/9834 cut-off events. [2024-06-27 22:52:09,070 INFO L125 PetriNetUnfolderBase]: For 143045/143782 co-relation queries the response was YES. [2024-06-27 22:52:09,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56996 conditions, 9834 events. 6374/9834 cut-off events. For 143045/143782 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 60706 event pairs, 2882 based on Foata normal form. 39/9234 useless extension candidates. Maximal degree in co-relation 56913. Up to 8681 conditions per place. [2024-06-27 22:52:09,149 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 289 selfloop transitions, 38 changer transitions 0/379 dead transitions. [2024-06-27 22:52:09,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 379 transitions, 5419 flow [2024-06-27 22:52:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-27 22:52:09,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46618357487922707 [2024-06-27 22:52:09,150 INFO L175 Difference]: Start difference. First operand has 171 places, 338 transitions, 4553 flow. Second operand 9 states and 193 transitions. [2024-06-27 22:52:09,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 379 transitions, 5419 flow [2024-06-27 22:52:09,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 379 transitions, 5317 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 22:52:09,370 INFO L231 Difference]: Finished difference. Result has 177 places, 345 transitions, 4622 flow [2024-06-27 22:52:09,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4451, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4622, PETRI_PLACES=177, PETRI_TRANSITIONS=345} [2024-06-27 22:52:09,370 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 125 predicate places. [2024-06-27 22:52:09,371 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 345 transitions, 4622 flow [2024-06-27 22:52:09,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:09,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:09,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:09,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:52:09,371 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:09,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:09,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1530764359, now seen corresponding path program 1 times [2024-06-27 22:52:09,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:09,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11390083] [2024-06-27 22:52:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:09,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:10,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:10,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11390083] [2024-06-27 22:52:10,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11390083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:10,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:10,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:10,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964596262] [2024-06-27 22:52:10,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:10,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:10,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:10,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:52:10,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 345 transitions, 4622 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 22:52:10,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:10,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:52:10,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:11,738 INFO L124 PetriNetUnfolderBase]: 5926/9285 cut-off events. [2024-06-27 22:52:11,738 INFO L125 PetriNetUnfolderBase]: For 154364/154943 co-relation queries the response was YES. [2024-06-27 22:52:11,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56923 conditions, 9285 events. 5926/9285 cut-off events. For 154364/154943 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 57381 event pairs, 2589 based on Foata normal form. 208/8916 useless extension candidates. Maximal degree in co-relation 56838. Up to 8038 conditions per place. [2024-06-27 22:52:11,817 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 247 selfloop transitions, 133 changer transitions 0/409 dead transitions. [2024-06-27 22:52:11,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 409 transitions, 5966 flow [2024-06-27 22:52:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:52:11,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:52:11,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-27 22:52:11,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590062111801242 [2024-06-27 22:52:11,818 INFO L175 Difference]: Start difference. First operand has 177 places, 345 transitions, 4622 flow. Second operand 7 states and 180 transitions. [2024-06-27 22:52:11,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 409 transitions, 5966 flow [2024-06-27 22:52:12,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 409 transitions, 5895 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 22:52:12,066 INFO L231 Difference]: Finished difference. Result has 180 places, 374 transitions, 5381 flow [2024-06-27 22:52:12,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4551, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5381, PETRI_PLACES=180, PETRI_TRANSITIONS=374} [2024-06-27 22:52:12,067 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 128 predicate places. [2024-06-27 22:52:12,067 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 374 transitions, 5381 flow [2024-06-27 22:52:12,067 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 22:52:12,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:12,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:12,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:52:12,067 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:12,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:12,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1536509395, now seen corresponding path program 1 times [2024-06-27 22:52:12,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:12,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088430454] [2024-06-27 22:52:12,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:12,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:12,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:12,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088430454] [2024-06-27 22:52:12,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088430454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:12,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:12,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:12,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865191142] [2024-06-27 22:52:12,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:12,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:12,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:12,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:12,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:12,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:52:12,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 374 transitions, 5381 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:12,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:12,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:52:12,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:14,512 INFO L124 PetriNetUnfolderBase]: 6535/10032 cut-off events. [2024-06-27 22:52:14,512 INFO L125 PetriNetUnfolderBase]: For 157988/157990 co-relation queries the response was YES. [2024-06-27 22:52:14,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62353 conditions, 10032 events. 6535/10032 cut-off events. For 157988/157990 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 60441 event pairs, 2381 based on Foata normal form. 4/9566 useless extension candidates. Maximal degree in co-relation 62267. Up to 8994 conditions per place. [2024-06-27 22:52:14,611 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 388 selfloop transitions, 102 changer transitions 0/497 dead transitions. [2024-06-27 22:52:14,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 497 transitions, 7825 flow [2024-06-27 22:52:14,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:14,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:14,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-27 22:52:14,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-27 22:52:14,613 INFO L175 Difference]: Start difference. First operand has 180 places, 374 transitions, 5381 flow. Second operand 9 states and 201 transitions. [2024-06-27 22:52:14,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 497 transitions, 7825 flow [2024-06-27 22:52:14,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 497 transitions, 7565 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-27 22:52:14,964 INFO L231 Difference]: Finished difference. Result has 190 places, 451 transitions, 6870 flow [2024-06-27 22:52:14,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5171, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6870, PETRI_PLACES=190, PETRI_TRANSITIONS=451} [2024-06-27 22:52:14,965 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 138 predicate places. [2024-06-27 22:52:14,965 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 451 transitions, 6870 flow [2024-06-27 22:52:14,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:14,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:14,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:14,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:52:14,965 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:14,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:14,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1536503629, now seen corresponding path program 2 times [2024-06-27 22:52:14,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:14,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836286429] [2024-06-27 22:52:14,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:14,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:15,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:15,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836286429] [2024-06-27 22:52:15,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836286429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:15,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:15,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:15,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681463313] [2024-06-27 22:52:15,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:15,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:15,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:15,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:15,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:15,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:52:15,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 451 transitions, 6870 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 22:52:15,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:15,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:52:15,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:17,435 INFO L124 PetriNetUnfolderBase]: 6178/9640 cut-off events. [2024-06-27 22:52:17,436 INFO L125 PetriNetUnfolderBase]: For 186236/186997 co-relation queries the response was YES. [2024-06-27 22:52:17,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62668 conditions, 9640 events. 6178/9640 cut-off events. For 186236/186997 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 59803 event pairs, 2207 based on Foata normal form. 47/9095 useless extension candidates. Maximal degree in co-relation 62577. Up to 8220 conditions per place. [2024-06-27 22:52:17,527 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 265 selfloop transitions, 191 changer transitions 0/490 dead transitions. [2024-06-27 22:52:17,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 490 transitions, 8003 flow [2024-06-27 22:52:17,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:52:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:52:17,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 22:52:17,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5527950310559007 [2024-06-27 22:52:17,528 INFO L175 Difference]: Start difference. First operand has 190 places, 451 transitions, 6870 flow. Second operand 7 states and 178 transitions. [2024-06-27 22:52:17,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 490 transitions, 8003 flow [2024-06-27 22:52:18,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 490 transitions, 7922 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-27 22:52:18,048 INFO L231 Difference]: Finished difference. Result has 195 places, 455 transitions, 7300 flow [2024-06-27 22:52:18,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6789, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7300, PETRI_PLACES=195, PETRI_TRANSITIONS=455} [2024-06-27 22:52:18,049 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 143 predicate places. [2024-06-27 22:52:18,049 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 455 transitions, 7300 flow [2024-06-27 22:52:18,049 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 22:52:18,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:18,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:18,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:52:18,050 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:18,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:18,050 INFO L85 PathProgramCache]: Analyzing trace with hash 242773833, now seen corresponding path program 3 times [2024-06-27 22:52:18,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:18,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972024563] [2024-06-27 22:52:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:18,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:18,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:18,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972024563] [2024-06-27 22:52:18,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972024563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:18,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:18,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:18,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340158224] [2024-06-27 22:52:18,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:18,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:18,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:18,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:18,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:19,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:52:19,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 455 transitions, 7300 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 22:52:19,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:19,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:52:19,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:20,816 INFO L124 PetriNetUnfolderBase]: 6386/9897 cut-off events. [2024-06-27 22:52:20,816 INFO L125 PetriNetUnfolderBase]: For 206272/206941 co-relation queries the response was YES. [2024-06-27 22:52:20,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66422 conditions, 9897 events. 6386/9897 cut-off events. For 206272/206941 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 60911 event pairs, 2267 based on Foata normal form. 79/9385 useless extension candidates. Maximal degree in co-relation 66330. Up to 8390 conditions per place. [2024-06-27 22:52:20,906 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 303 selfloop transitions, 207 changer transitions 0/544 dead transitions. [2024-06-27 22:52:20,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 544 transitions, 9505 flow [2024-06-27 22:52:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:52:20,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:52:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 22:52:20,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 22:52:20,907 INFO L175 Difference]: Start difference. First operand has 195 places, 455 transitions, 7300 flow. Second operand 8 states and 192 transitions. [2024-06-27 22:52:20,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 544 transitions, 9505 flow [2024-06-27 22:52:21,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 544 transitions, 9106 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-27 22:52:21,298 INFO L231 Difference]: Finished difference. Result has 200 places, 505 transitions, 8443 flow [2024-06-27 22:52:21,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6993, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8443, PETRI_PLACES=200, PETRI_TRANSITIONS=505} [2024-06-27 22:52:21,299 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 148 predicate places. [2024-06-27 22:52:21,299 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 505 transitions, 8443 flow [2024-06-27 22:52:21,299 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 22:52:21,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:21,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:21,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:52:21,300 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:21,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:21,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1452384455, now seen corresponding path program 2 times [2024-06-27 22:52:21,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:21,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441056285] [2024-06-27 22:52:21,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:21,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:22,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:22,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441056285] [2024-06-27 22:52:22,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441056285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:22,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:22,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:22,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104652930] [2024-06-27 22:52:22,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:22,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:22,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:22,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:52:22,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 505 transitions, 8443 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:22,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:22,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:52:22,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:23,941 INFO L124 PetriNetUnfolderBase]: 6772/10344 cut-off events. [2024-06-27 22:52:23,941 INFO L125 PetriNetUnfolderBase]: For 199706/199712 co-relation queries the response was YES. [2024-06-27 22:52:23,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68506 conditions, 10344 events. 6772/10344 cut-off events. For 199706/199712 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 61954 event pairs, 2482 based on Foata normal form. 8/9882 useless extension candidates. Maximal degree in co-relation 68412. Up to 9297 conditions per place. [2024-06-27 22:52:24,037 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 449 selfloop transitions, 117 changer transitions 0/573 dead transitions. [2024-06-27 22:52:24,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 573 transitions, 10043 flow [2024-06-27 22:52:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-27 22:52:24,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-27 22:52:24,039 INFO L175 Difference]: Start difference. First operand has 200 places, 505 transitions, 8443 flow. Second operand 9 states and 204 transitions. [2024-06-27 22:52:24,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 573 transitions, 10043 flow [2024-06-27 22:52:24,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 573 transitions, 9741 flow, removed 59 selfloop flow, removed 3 redundant places. [2024-06-27 22:52:24,490 INFO L231 Difference]: Finished difference. Result has 208 places, 528 transitions, 8756 flow [2024-06-27 22:52:24,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8147, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8756, PETRI_PLACES=208, PETRI_TRANSITIONS=528} [2024-06-27 22:52:24,491 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 156 predicate places. [2024-06-27 22:52:24,491 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 528 transitions, 8756 flow [2024-06-27 22:52:24,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:24,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:24,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:24,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:52:24,491 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:24,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1575840985, now seen corresponding path program 3 times [2024-06-27 22:52:24,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:24,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689254493] [2024-06-27 22:52:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:24,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:25,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:25,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689254493] [2024-06-27 22:52:25,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689254493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:25,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:25,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:25,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901839965] [2024-06-27 22:52:25,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:25,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:25,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:25,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:25,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:25,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:52:25,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 528 transitions, 8756 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:25,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:25,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:52:25,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:27,411 INFO L124 PetriNetUnfolderBase]: 6848/10448 cut-off events. [2024-06-27 22:52:27,411 INFO L125 PetriNetUnfolderBase]: For 213321/213323 co-relation queries the response was YES. [2024-06-27 22:52:27,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70837 conditions, 10448 events. 6848/10448 cut-off events. For 213321/213323 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 62465 event pairs, 2400 based on Foata normal form. 4/9980 useless extension candidates. Maximal degree in co-relation 70740. Up to 9136 conditions per place. [2024-06-27 22:52:27,487 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 440 selfloop transitions, 179 changer transitions 0/626 dead transitions. [2024-06-27 22:52:27,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 626 transitions, 11155 flow [2024-06-27 22:52:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:27,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 22:52:27,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048309178743962 [2024-06-27 22:52:27,488 INFO L175 Difference]: Start difference. First operand has 208 places, 528 transitions, 8756 flow. Second operand 9 states and 209 transitions. [2024-06-27 22:52:27,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 626 transitions, 11155 flow [2024-06-27 22:52:27,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 626 transitions, 11068 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-27 22:52:27,906 INFO L231 Difference]: Finished difference. Result has 217 places, 577 transitions, 10079 flow [2024-06-27 22:52:27,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8669, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10079, PETRI_PLACES=217, PETRI_TRANSITIONS=577} [2024-06-27 22:52:27,907 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 165 predicate places. [2024-06-27 22:52:27,907 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 577 transitions, 10079 flow [2024-06-27 22:52:27,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:27,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:27,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:27,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:52:27,907 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:27,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:27,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1456139113, now seen corresponding path program 1 times [2024-06-27 22:52:27,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:27,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853722232] [2024-06-27 22:52:27,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:27,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:29,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:29,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853722232] [2024-06-27 22:52:29,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853722232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:29,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:29,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:52:29,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754037595] [2024-06-27 22:52:29,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:29,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:52:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:52:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:52:29,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:52:29,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 577 transitions, 10079 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:29,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:29,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:52:29,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:31,479 INFO L124 PetriNetUnfolderBase]: 6917/10545 cut-off events. [2024-06-27 22:52:31,479 INFO L125 PetriNetUnfolderBase]: For 237935/237937 co-relation queries the response was YES. [2024-06-27 22:52:31,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75100 conditions, 10545 events. 6917/10545 cut-off events. For 237935/237937 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 62969 event pairs, 2224 based on Foata normal form. 8/10081 useless extension candidates. Maximal degree in co-relation 74999. Up to 9154 conditions per place. [2024-06-27 22:52:31,605 INFO L140 encePairwiseOnDemand]: 28/46 looper letters, 443 selfloop transitions, 183 changer transitions 0/633 dead transitions. [2024-06-27 22:52:31,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 633 transitions, 11800 flow [2024-06-27 22:52:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:31,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 22:52:31,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5096618357487923 [2024-06-27 22:52:31,607 INFO L175 Difference]: Start difference. First operand has 217 places, 577 transitions, 10079 flow. Second operand 9 states and 211 transitions. [2024-06-27 22:52:31,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 633 transitions, 11800 flow [2024-06-27 22:52:32,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 633 transitions, 11553 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-06-27 22:52:32,318 INFO L231 Difference]: Finished difference. Result has 222 places, 584 transitions, 10356 flow [2024-06-27 22:52:32,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9836, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10356, PETRI_PLACES=222, PETRI_TRANSITIONS=584} [2024-06-27 22:52:32,319 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 170 predicate places. [2024-06-27 22:52:32,319 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 584 transitions, 10356 flow [2024-06-27 22:52:32,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:32,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:32,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:32,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:52:32,319 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:32,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:32,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1456132355, now seen corresponding path program 4 times [2024-06-27 22:52:32,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:32,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967681035] [2024-06-27 22:52:32,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:32,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:33,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:33,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967681035] [2024-06-27 22:52:33,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967681035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:33,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:33,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:33,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200745210] [2024-06-27 22:52:33,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:33,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:33,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:33,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:33,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:33,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:52:33,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 584 transitions, 10356 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:33,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:33,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:52:33,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:35,360 INFO L124 PetriNetUnfolderBase]: 6912/10537 cut-off events. [2024-06-27 22:52:35,360 INFO L125 PetriNetUnfolderBase]: For 249900/249902 co-relation queries the response was YES. [2024-06-27 22:52:35,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77274 conditions, 10537 events. 6912/10537 cut-off events. For 249900/249902 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 62938 event pairs, 2277 based on Foata normal form. 4/10069 useless extension candidates. Maximal degree in co-relation 77171. Up to 9227 conditions per place. [2024-06-27 22:52:35,477 INFO L140 encePairwiseOnDemand]: 29/46 looper letters, 459 selfloop transitions, 173 changer transitions 0/639 dead transitions. [2024-06-27 22:52:35,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 639 transitions, 12080 flow [2024-06-27 22:52:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:35,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 22:52:35,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048309178743962 [2024-06-27 22:52:35,478 INFO L175 Difference]: Start difference. First operand has 222 places, 584 transitions, 10356 flow. Second operand 9 states and 209 transitions. [2024-06-27 22:52:35,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 639 transitions, 12080 flow [2024-06-27 22:52:36,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 639 transitions, 11609 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 22:52:36,127 INFO L231 Difference]: Finished difference. Result has 225 places, 592 transitions, 10491 flow [2024-06-27 22:52:36,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=9896, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10491, PETRI_PLACES=225, PETRI_TRANSITIONS=592} [2024-06-27 22:52:36,128 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 173 predicate places. [2024-06-27 22:52:36,128 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 592 transitions, 10491 flow [2024-06-27 22:52:36,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:36,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:36,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:36,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:52:36,129 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:36,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1555483155, now seen corresponding path program 4 times [2024-06-27 22:52:36,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:36,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62683933] [2024-06-27 22:52:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:36,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:37,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:37,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62683933] [2024-06-27 22:52:37,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62683933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:37,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:37,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:37,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286508501] [2024-06-27 22:52:37,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:37,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:37,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:37,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:37,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:37,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:52:37,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 592 transitions, 10491 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 22:52:37,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:37,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:52:37,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:39,174 INFO L124 PetriNetUnfolderBase]: 6646/10245 cut-off events. [2024-06-27 22:52:39,174 INFO L125 PetriNetUnfolderBase]: For 288130/289003 co-relation queries the response was YES. [2024-06-27 22:52:39,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76972 conditions, 10245 events. 6646/10245 cut-off events. For 288130/289003 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 62541 event pairs, 2130 based on Foata normal form. 29/9669 useless extension candidates. Maximal degree in co-relation 76867. Up to 8424 conditions per place. [2024-06-27 22:52:39,289 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 288 selfloop transitions, 303 changer transitions 0/638 dead transitions. [2024-06-27 22:52:39,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 638 transitions, 12062 flow [2024-06-27 22:52:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:52:39,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:52:39,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 22:52:39,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-27 22:52:39,290 INFO L175 Difference]: Start difference. First operand has 225 places, 592 transitions, 10491 flow. Second operand 8 states and 192 transitions. [2024-06-27 22:52:39,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 638 transitions, 12062 flow [2024-06-27 22:52:40,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 638 transitions, 11698 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-27 22:52:40,023 INFO L231 Difference]: Finished difference. Result has 229 places, 602 transitions, 11175 flow [2024-06-27 22:52:40,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10153, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11175, PETRI_PLACES=229, PETRI_TRANSITIONS=602} [2024-06-27 22:52:40,024 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 177 predicate places. [2024-06-27 22:52:40,024 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 602 transitions, 11175 flow [2024-06-27 22:52:40,025 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 22:52:40,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:40,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:40,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:52:40,025 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:40,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:40,025 INFO L85 PathProgramCache]: Analyzing trace with hash -90242631, now seen corresponding path program 5 times [2024-06-27 22:52:40,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:40,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477348363] [2024-06-27 22:52:40,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:40,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:40,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:40,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477348363] [2024-06-27 22:52:40,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477348363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:40,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:40,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:40,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035534002] [2024-06-27 22:52:40,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:40,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:40,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:40,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:40,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:40,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:52:40,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 602 transitions, 11175 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 22:52:40,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:40,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:52:40,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:43,071 INFO L124 PetriNetUnfolderBase]: 6701/10331 cut-off events. [2024-06-27 22:52:43,071 INFO L125 PetriNetUnfolderBase]: For 302979/303961 co-relation queries the response was YES. [2024-06-27 22:52:43,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78659 conditions, 10331 events. 6701/10331 cut-off events. For 302979/303961 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 63077 event pairs, 1948 based on Foata normal form. 77/9808 useless extension candidates. Maximal degree in co-relation 78552. Up to 8681 conditions per place. [2024-06-27 22:52:43,205 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 385 selfloop transitions, 232 changer transitions 0/664 dead transitions. [2024-06-27 22:52:43,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 664 transitions, 13217 flow [2024-06-27 22:52:43,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:52:43,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:52:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-27 22:52:43,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-27 22:52:43,206 INFO L175 Difference]: Start difference. First operand has 229 places, 602 transitions, 11175 flow. Second operand 7 states and 170 transitions. [2024-06-27 22:52:43,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 664 transitions, 13217 flow [2024-06-27 22:52:44,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 664 transitions, 12864 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-27 22:52:44,128 INFO L231 Difference]: Finished difference. Result has 232 places, 632 transitions, 12100 flow [2024-06-27 22:52:44,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=10846, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12100, PETRI_PLACES=232, PETRI_TRANSITIONS=632} [2024-06-27 22:52:44,129 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 180 predicate places. [2024-06-27 22:52:44,129 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 632 transitions, 12100 flow [2024-06-27 22:52:44,129 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 22:52:44,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:44,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:44,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:52:44,129 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:44,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:44,130 INFO L85 PathProgramCache]: Analyzing trace with hash -90151305, now seen corresponding path program 5 times [2024-06-27 22:52:44,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:44,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381374628] [2024-06-27 22:52:44,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:44,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:44,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:44,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:44,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381374628] [2024-06-27 22:52:44,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381374628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:44,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:44,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:44,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355718140] [2024-06-27 22:52:44,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:44,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:44,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:44,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:44,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:44,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:52:44,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 632 transitions, 12100 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:44,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:44,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:52:44,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:47,120 INFO L124 PetriNetUnfolderBase]: 7078/10761 cut-off events. [2024-06-27 22:52:47,120 INFO L125 PetriNetUnfolderBase]: For 293966/293969 co-relation queries the response was YES. [2024-06-27 22:52:47,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82798 conditions, 10761 events. 7078/10761 cut-off events. For 293966/293969 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 64147 event pairs, 2096 based on Foata normal form. 4/10284 useless extension candidates. Maximal degree in co-relation 82689. Up to 9710 conditions per place. [2024-06-27 22:52:47,250 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 570 selfloop transitions, 126 changer transitions 0/703 dead transitions. [2024-06-27 22:52:47,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 703 transitions, 14118 flow [2024-06-27 22:52:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:52:47,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:52:47,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 22:52:47,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-27 22:52:47,251 INFO L175 Difference]: Start difference. First operand has 232 places, 632 transitions, 12100 flow. Second operand 8 states and 185 transitions. [2024-06-27 22:52:47,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 703 transitions, 14118 flow [2024-06-27 22:52:48,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 703 transitions, 13752 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-27 22:52:48,046 INFO L231 Difference]: Finished difference. Result has 238 places, 662 transitions, 12514 flow [2024-06-27 22:52:48,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=11737, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12514, PETRI_PLACES=238, PETRI_TRANSITIONS=662} [2024-06-27 22:52:48,047 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 186 predicate places. [2024-06-27 22:52:48,047 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 662 transitions, 12514 flow [2024-06-27 22:52:48,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:48,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:48,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:48,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:52:48,047 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:48,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash -86396895, now seen corresponding path program 6 times [2024-06-27 22:52:48,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:48,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491603190] [2024-06-27 22:52:48,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:48,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:48,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:48,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491603190] [2024-06-27 22:52:48,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491603190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:48,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:48,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:48,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370796480] [2024-06-27 22:52:48,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:48,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:48,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:48,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:48,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:52:48,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 662 transitions, 12514 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:48,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:48,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:52:48,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:51,270 INFO L124 PetriNetUnfolderBase]: 7214/10946 cut-off events. [2024-06-27 22:52:51,270 INFO L125 PetriNetUnfolderBase]: For 316201/316204 co-relation queries the response was YES. [2024-06-27 22:52:51,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85932 conditions, 10946 events. 7214/10946 cut-off events. For 316201/316204 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 65290 event pairs, 2087 based on Foata normal form. 4/10468 useless extension candidates. Maximal degree in co-relation 85820. Up to 9694 conditions per place. [2024-06-27 22:52:51,410 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 551 selfloop transitions, 191 changer transitions 0/749 dead transitions. [2024-06-27 22:52:51,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 749 transitions, 15031 flow [2024-06-27 22:52:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:52:51,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:52:51,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 22:52:51,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163043478260869 [2024-06-27 22:52:51,411 INFO L175 Difference]: Start difference. First operand has 238 places, 662 transitions, 12514 flow. Second operand 8 states and 190 transitions. [2024-06-27 22:52:51,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 749 transitions, 15031 flow [2024-06-27 22:52:52,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 749 transitions, 14935 flow, removed 45 selfloop flow, removed 1 redundant places. [2024-06-27 22:52:52,241 INFO L231 Difference]: Finished difference. Result has 247 places, 705 transitions, 13714 flow [2024-06-27 22:52:52,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=12418, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13714, PETRI_PLACES=247, PETRI_TRANSITIONS=705} [2024-06-27 22:52:52,241 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 195 predicate places. [2024-06-27 22:52:52,241 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 705 transitions, 13714 flow [2024-06-27 22:52:52,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:52,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:52,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:52,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:52:52,242 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:52,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:52,242 INFO L85 PathProgramCache]: Analyzing trace with hash -86396647, now seen corresponding path program 2 times [2024-06-27 22:52:52,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:52,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877404931] [2024-06-27 22:52:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:52,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:53,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:53,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877404931] [2024-06-27 22:52:53,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877404931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:53,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:53,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:52:53,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246425193] [2024-06-27 22:52:53,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:53,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:52:53,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:53,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:52:53,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:52:53,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:52:53,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 705 transitions, 13714 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:53,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:53,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:52:53,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:52:55,909 INFO L124 PetriNetUnfolderBase]: 7246/11037 cut-off events. [2024-06-27 22:52:55,909 INFO L125 PetriNetUnfolderBase]: For 348060/348066 co-relation queries the response was YES. [2024-06-27 22:52:55,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89879 conditions, 11037 events. 7246/11037 cut-off events. For 348060/348066 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 66333 event pairs, 2682 based on Foata normal form. 6/10571 useless extension candidates. Maximal degree in co-relation 89762. Up to 10114 conditions per place. [2024-06-27 22:52:56,049 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 693 selfloop transitions, 45 changer transitions 0/745 dead transitions. [2024-06-27 22:52:56,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 745 transitions, 15436 flow [2024-06-27 22:52:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:52:56,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:52:56,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-27 22:52:56,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420289855072464 [2024-06-27 22:52:56,051 INFO L175 Difference]: Start difference. First operand has 247 places, 705 transitions, 13714 flow. Second operand 9 states and 183 transitions. [2024-06-27 22:52:56,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 745 transitions, 15436 flow [2024-06-27 22:52:57,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 745 transitions, 15197 flow, removed 76 selfloop flow, removed 3 redundant places. [2024-06-27 22:52:57,331 INFO L231 Difference]: Finished difference. Result has 253 places, 713 transitions, 13709 flow [2024-06-27 22:52:57,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13477, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13709, PETRI_PLACES=253, PETRI_TRANSITIONS=713} [2024-06-27 22:52:57,332 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 201 predicate places. [2024-06-27 22:52:57,333 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 713 transitions, 13709 flow [2024-06-27 22:52:57,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:57,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:52:57,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:52:57,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:52:57,333 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:52:57,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:52:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash -119681109, now seen corresponding path program 7 times [2024-06-27 22:52:57,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:52:57,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449596120] [2024-06-27 22:52:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:52:57,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:52:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:52:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:52:58,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:52:58,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449596120] [2024-06-27 22:52:58,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449596120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:52:58,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:52:58,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:52:58,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876151984] [2024-06-27 22:52:58,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:52:58,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:52:58,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:52:58,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:52:58,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:52:58,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:52:58,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 713 transitions, 13709 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:52:58,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:52:58,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:52:58,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:00,909 INFO L124 PetriNetUnfolderBase]: 7244/10987 cut-off events. [2024-06-27 22:53:00,910 INFO L125 PetriNetUnfolderBase]: For 356903/356906 co-relation queries the response was YES. [2024-06-27 22:53:00,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90819 conditions, 10987 events. 7244/10987 cut-off events. For 356903/356906 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 65454 event pairs, 2087 based on Foata normal form. 4/10509 useless extension candidates. Maximal degree in co-relation 90701. Up to 9737 conditions per place. [2024-06-27 22:53:01,017 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 568 selfloop transitions, 188 changer transitions 0/763 dead transitions. [2024-06-27 22:53:01,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 763 transitions, 15703 flow [2024-06-27 22:53:01,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-06-27 22:53:01,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4830917874396135 [2024-06-27 22:53:01,019 INFO L175 Difference]: Start difference. First operand has 253 places, 713 transitions, 13709 flow. Second operand 9 states and 200 transitions. [2024-06-27 22:53:01,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 763 transitions, 15703 flow [2024-06-27 22:53:01,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 763 transitions, 15539 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 22:53:01,813 INFO L231 Difference]: Finished difference. Result has 257 places, 720 transitions, 14176 flow [2024-06-27 22:53:01,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13545, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14176, PETRI_PLACES=257, PETRI_TRANSITIONS=720} [2024-06-27 22:53:01,814 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 205 predicate places. [2024-06-27 22:53:01,815 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 720 transitions, 14176 flow [2024-06-27 22:53:01,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:01,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:01,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:01,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:53:01,815 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:01,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash -119681295, now seen corresponding path program 6 times [2024-06-27 22:53:01,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:01,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039133347] [2024-06-27 22:53:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:01,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:02,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:02,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039133347] [2024-06-27 22:53:02,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039133347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:02,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:02,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:02,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962877362] [2024-06-27 22:53:02,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:02,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:02,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:02,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:02,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:03,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:53:03,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 720 transitions, 14176 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 22:53:03,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:03,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:53:03,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:05,384 INFO L124 PetriNetUnfolderBase]: 6992/10729 cut-off events. [2024-06-27 22:53:05,384 INFO L125 PetriNetUnfolderBase]: For 398057/398470 co-relation queries the response was YES. [2024-06-27 22:53:05,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91243 conditions, 10729 events. 6992/10729 cut-off events. For 398057/398470 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 65129 event pairs, 1954 based on Foata normal form. 19/10146 useless extension candidates. Maximal degree in co-relation 91123. Up to 8892 conditions per place. [2024-06-27 22:53:05,512 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 408 selfloop transitions, 283 changer transitions 0/762 dead transitions. [2024-06-27 22:53:05,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 762 transitions, 15919 flow [2024-06-27 22:53:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:53:05,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:53:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 22:53:05,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341614906832298 [2024-06-27 22:53:05,514 INFO L175 Difference]: Start difference. First operand has 257 places, 720 transitions, 14176 flow. Second operand 7 states and 172 transitions. [2024-06-27 22:53:05,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 762 transitions, 15919 flow [2024-06-27 22:53:06,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 762 transitions, 15626 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-27 22:53:06,438 INFO L231 Difference]: Finished difference. Result has 260 places, 730 transitions, 14704 flow [2024-06-27 22:53:06,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=13883, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14704, PETRI_PLACES=260, PETRI_TRANSITIONS=730} [2024-06-27 22:53:06,439 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 208 predicate places. [2024-06-27 22:53:06,439 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 730 transitions, 14704 flow [2024-06-27 22:53:06,439 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 22:53:06,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:06,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:06,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:53:06,439 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:06,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:06,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1113605713, now seen corresponding path program 3 times [2024-06-27 22:53:06,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:06,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812269359] [2024-06-27 22:53:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:06,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:07,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:07,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812269359] [2024-06-27 22:53:07,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812269359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:07,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:07,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:07,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700753582] [2024-06-27 22:53:07,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:07,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:07,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:07,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:07,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:07,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:53:07,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 730 transitions, 14704 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:07,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:07,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:53:07,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:10,165 INFO L124 PetriNetUnfolderBase]: 7394/11193 cut-off events. [2024-06-27 22:53:10,165 INFO L125 PetriNetUnfolderBase]: For 401420/401423 co-relation queries the response was YES. [2024-06-27 22:53:10,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95685 conditions, 11193 events. 7394/11193 cut-off events. For 401420/401423 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 66568 event pairs, 2051 based on Foata normal form. 4/10708 useless extension candidates. Maximal degree in co-relation 95564. Up to 9343 conditions per place. [2024-06-27 22:53:10,308 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 469 selfloop transitions, 320 changer transitions 0/796 dead transitions. [2024-06-27 22:53:10,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 796 transitions, 17286 flow [2024-06-27 22:53:10,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:10,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-27 22:53:10,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-06-27 22:53:10,309 INFO L175 Difference]: Start difference. First operand has 260 places, 730 transitions, 14704 flow. Second operand 9 states and 204 transitions. [2024-06-27 22:53:10,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 796 transitions, 17286 flow [2024-06-27 22:53:11,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 796 transitions, 16662 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 22:53:11,532 INFO L231 Difference]: Finished difference. Result has 267 places, 751 transitions, 15464 flow [2024-06-27 22:53:11,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=14080, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15464, PETRI_PLACES=267, PETRI_TRANSITIONS=751} [2024-06-27 22:53:11,532 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 215 predicate places. [2024-06-27 22:53:11,532 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 751 transitions, 15464 flow [2024-06-27 22:53:11,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:11,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:11,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:11,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:53:11,533 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:11,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:11,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1113308795, now seen corresponding path program 8 times [2024-06-27 22:53:11,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:11,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383294126] [2024-06-27 22:53:11,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:11,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:12,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:12,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383294126] [2024-06-27 22:53:12,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383294126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:12,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:12,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:12,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747895815] [2024-06-27 22:53:12,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:12,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:12,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:12,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:12,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:12,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:53:12,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 751 transitions, 15464 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:12,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:12,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:53:12,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:14,985 INFO L124 PetriNetUnfolderBase]: 7418/11226 cut-off events. [2024-06-27 22:53:14,985 INFO L125 PetriNetUnfolderBase]: For 436945/436948 co-relation queries the response was YES. [2024-06-27 22:53:15,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100489 conditions, 11226 events. 7418/11226 cut-off events. For 436945/436948 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 66766 event pairs, 2052 based on Foata normal form. 4/10741 useless extension candidates. Maximal degree in co-relation 100364. Up to 9640 conditions per place. [2024-06-27 22:53:15,150 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 489 selfloop transitions, 304 changer transitions 0/800 dead transitions. [2024-06-27 22:53:15,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 800 transitions, 17676 flow [2024-06-27 22:53:15,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:15,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 22:53:15,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-27 22:53:15,152 INFO L175 Difference]: Start difference. First operand has 267 places, 751 transitions, 15464 flow. Second operand 8 states and 189 transitions. [2024-06-27 22:53:15,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 800 transitions, 17676 flow [2024-06-27 22:53:16,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 800 transitions, 17515 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-27 22:53:16,819 INFO L231 Difference]: Finished difference. Result has 273 places, 760 transitions, 16202 flow [2024-06-27 22:53:16,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15317, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=751, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16202, PETRI_PLACES=273, PETRI_TRANSITIONS=760} [2024-06-27 22:53:16,820 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 221 predicate places. [2024-06-27 22:53:16,820 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 760 transitions, 16202 flow [2024-06-27 22:53:16,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:16,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:16,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:16,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:53:16,820 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:16,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:16,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1113309043, now seen corresponding path program 4 times [2024-06-27 22:53:16,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:16,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7938354] [2024-06-27 22:53:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:16,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:17,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:17,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7938354] [2024-06-27 22:53:17,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7938354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:17,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:17,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:53:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507031614] [2024-06-27 22:53:17,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:17,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:53:17,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:17,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:53:17,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:53:18,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:53:18,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 760 transitions, 16202 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:18,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:18,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:53:18,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:21,003 INFO L124 PetriNetUnfolderBase]: 7439/11293 cut-off events. [2024-06-27 22:53:21,003 INFO L125 PetriNetUnfolderBase]: For 449585/449597 co-relation queries the response was YES. [2024-06-27 22:53:21,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101782 conditions, 11293 events. 7439/11293 cut-off events. For 449585/449597 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 67736 event pairs, 2651 based on Foata normal form. 10/10828 useless extension candidates. Maximal degree in co-relation 101654. Up to 10295 conditions per place. [2024-06-27 22:53:21,146 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 723 selfloop transitions, 67 changer transitions 0/797 dead transitions. [2024-06-27 22:53:21,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 797 transitions, 18056 flow [2024-06-27 22:53:21,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:21,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:21,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-27 22:53:21,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468599033816425 [2024-06-27 22:53:21,148 INFO L175 Difference]: Start difference. First operand has 273 places, 760 transitions, 16202 flow. Second operand 9 states and 185 transitions. [2024-06-27 22:53:21,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 797 transitions, 18056 flow [2024-06-27 22:53:22,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 797 transitions, 17252 flow, removed 102 selfloop flow, removed 5 redundant places. [2024-06-27 22:53:22,369 INFO L231 Difference]: Finished difference. Result has 277 places, 764 transitions, 15635 flow [2024-06-27 22:53:22,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15398, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15635, PETRI_PLACES=277, PETRI_TRANSITIONS=764} [2024-06-27 22:53:22,371 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 225 predicate places. [2024-06-27 22:53:22,371 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 764 transitions, 15635 flow [2024-06-27 22:53:22,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:22,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:22,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:22,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 22:53:22,371 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:22,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:22,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1105034585, now seen corresponding path program 9 times [2024-06-27 22:53:22,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:22,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374106680] [2024-06-27 22:53:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:22,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:23,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:23,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374106680] [2024-06-27 22:53:23,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374106680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:23,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:23,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:23,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487135561] [2024-06-27 22:53:23,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:23,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:23,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:23,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:23,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:53:23,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 764 transitions, 15635 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:23,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:23,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:53:23,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:26,334 INFO L124 PetriNetUnfolderBase]: 7460/11284 cut-off events. [2024-06-27 22:53:26,334 INFO L125 PetriNetUnfolderBase]: For 452218/452221 co-relation queries the response was YES. [2024-06-27 22:53:26,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101233 conditions, 11284 events. 7460/11284 cut-off events. For 452218/452221 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 67034 event pairs, 2052 based on Foata normal form. 4/10799 useless extension candidates. Maximal degree in co-relation 101104. Up to 9692 conditions per place. [2024-06-27 22:53:26,490 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 519 selfloop transitions, 285 changer transitions 0/811 dead transitions. [2024-06-27 22:53:26,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 811 transitions, 17917 flow [2024-06-27 22:53:26,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:26,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:26,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-27 22:53:26,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48792270531400966 [2024-06-27 22:53:26,492 INFO L175 Difference]: Start difference. First operand has 277 places, 764 transitions, 15635 flow. Second operand 9 states and 202 transitions. [2024-06-27 22:53:26,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 811 transitions, 17917 flow [2024-06-27 22:53:27,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 811 transitions, 17772 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 22:53:27,827 INFO L231 Difference]: Finished difference. Result has 280 places, 770 transitions, 16268 flow [2024-06-27 22:53:27,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15490, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16268, PETRI_PLACES=280, PETRI_TRANSITIONS=770} [2024-06-27 22:53:27,828 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 228 predicate places. [2024-06-27 22:53:27,828 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 770 transitions, 16268 flow [2024-06-27 22:53:27,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:27,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:27,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:27,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 22:53:27,828 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:27,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:27,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1105034833, now seen corresponding path program 5 times [2024-06-27 22:53:27,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:27,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077124474] [2024-06-27 22:53:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:27,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:29,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:29,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077124474] [2024-06-27 22:53:29,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077124474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:29,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:29,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:29,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256638860] [2024-06-27 22:53:29,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:29,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:29,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:29,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:29,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:53:29,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 770 transitions, 16268 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:29,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:29,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:53:29,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:31,882 INFO L124 PetriNetUnfolderBase]: 7458/11319 cut-off events. [2024-06-27 22:53:31,882 INFO L125 PetriNetUnfolderBase]: For 472256/472268 co-relation queries the response was YES. [2024-06-27 22:53:31,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102617 conditions, 11319 events. 7458/11319 cut-off events. For 472256/472268 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 67860 event pairs, 2651 based on Foata normal form. 10/10854 useless extension candidates. Maximal degree in co-relation 102486. Up to 10321 conditions per place. [2024-06-27 22:53:32,026 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 736 selfloop transitions, 64 changer transitions 0/807 dead transitions. [2024-06-27 22:53:32,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 807 transitions, 18150 flow [2024-06-27 22:53:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:32,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 22:53:32,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-06-27 22:53:32,027 INFO L175 Difference]: Start difference. First operand has 280 places, 770 transitions, 16268 flow. Second operand 8 states and 176 transitions. [2024-06-27 22:53:32,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 807 transitions, 18150 flow [2024-06-27 22:53:33,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 807 transitions, 17301 flow, removed 88 selfloop flow, removed 7 redundant places. [2024-06-27 22:53:33,454 INFO L231 Difference]: Finished difference. Result has 281 places, 774 transitions, 15658 flow [2024-06-27 22:53:33,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15419, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15658, PETRI_PLACES=281, PETRI_TRANSITIONS=774} [2024-06-27 22:53:33,456 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 229 predicate places. [2024-06-27 22:53:33,457 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 774 transitions, 15658 flow [2024-06-27 22:53:33,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:33,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:33,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:33,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 22:53:33,457 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:33,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:33,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1105027889, now seen corresponding path program 7 times [2024-06-27 22:53:33,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:33,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013976746] [2024-06-27 22:53:33,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:33,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:34,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:34,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013976746] [2024-06-27 22:53:34,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013976746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:34,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:34,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:34,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381233936] [2024-06-27 22:53:34,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:34,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:34,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:34,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:34,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:34,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:53:34,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 774 transitions, 15658 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 22:53:34,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:34,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:53:34,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:37,735 INFO L124 PetriNetUnfolderBase]: 7158/10943 cut-off events. [2024-06-27 22:53:37,735 INFO L125 PetriNetUnfolderBase]: For 503121/503370 co-relation queries the response was YES. [2024-06-27 22:53:37,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100302 conditions, 10943 events. 7158/10943 cut-off events. For 503121/503370 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 66228 event pairs, 1924 based on Foata normal form. 7/10326 useless extension candidates. Maximal degree in co-relation 100171. Up to 8766 conditions per place. [2024-06-27 22:53:37,855 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 334 selfloop transitions, 391 changer transitions 0/805 dead transitions. [2024-06-27 22:53:37,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 805 transitions, 17376 flow [2024-06-27 22:53:37,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:53:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:53:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 22:53:37,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49184782608695654 [2024-06-27 22:53:37,857 INFO L175 Difference]: Start difference. First operand has 281 places, 774 transitions, 15658 flow. Second operand 8 states and 181 transitions. [2024-06-27 22:53:37,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 805 transitions, 17376 flow [2024-06-27 22:53:39,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 805 transitions, 17225 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 22:53:39,161 INFO L231 Difference]: Finished difference. Result has 283 places, 779 transitions, 16476 flow [2024-06-27 22:53:39,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15507, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16476, PETRI_PLACES=283, PETRI_TRANSITIONS=779} [2024-06-27 22:53:39,162 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 231 predicate places. [2024-06-27 22:53:39,162 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 779 transitions, 16476 flow [2024-06-27 22:53:39,162 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 22:53:39,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:39,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:39,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 22:53:39,163 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:39,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:39,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1105028075, now seen corresponding path program 10 times [2024-06-27 22:53:39,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:39,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380642439] [2024-06-27 22:53:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:39,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:40,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:40,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380642439] [2024-06-27 22:53:40,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380642439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:40,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:40,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:53:40,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051271583] [2024-06-27 22:53:40,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:40,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:53:40,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:40,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:53:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:53:40,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:53:40,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 779 transitions, 16476 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:40,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:40,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:53:40,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:43,208 INFO L124 PetriNetUnfolderBase]: 7451/11271 cut-off events. [2024-06-27 22:53:43,208 INFO L125 PetriNetUnfolderBase]: For 498671/498674 co-relation queries the response was YES. [2024-06-27 22:53:43,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103980 conditions, 11271 events. 7451/11271 cut-off events. For 498671/498674 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 66939 event pairs, 2051 based on Foata normal form. 4/10786 useless extension candidates. Maximal degree in co-relation 103848. Up to 9681 conditions per place. [2024-06-27 22:53:43,328 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 524 selfloop transitions, 291 changer transitions 0/822 dead transitions. [2024-06-27 22:53:43,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 822 transitions, 18516 flow [2024-06-27 22:53:43,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 199 transitions. [2024-06-27 22:53:43,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806763285024155 [2024-06-27 22:53:43,329 INFO L175 Difference]: Start difference. First operand has 283 places, 779 transitions, 16476 flow. Second operand 9 states and 199 transitions. [2024-06-27 22:53:43,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 822 transitions, 18516 flow [2024-06-27 22:53:44,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 822 transitions, 17477 flow, removed 129 selfloop flow, removed 7 redundant places. [2024-06-27 22:53:44,522 INFO L231 Difference]: Finished difference. Result has 286 places, 784 transitions, 16137 flow [2024-06-27 22:53:44,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15475, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16137, PETRI_PLACES=286, PETRI_TRANSITIONS=784} [2024-06-27 22:53:44,523 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 234 predicate places. [2024-06-27 22:53:44,523 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 784 transitions, 16137 flow [2024-06-27 22:53:44,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:44,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:44,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:44,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 22:53:44,524 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:44,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:44,524 INFO L85 PathProgramCache]: Analyzing trace with hash -732622865, now seen corresponding path program 1 times [2024-06-27 22:53:44,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:44,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282739564] [2024-06-27 22:53:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:44,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:45,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:45,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282739564] [2024-06-27 22:53:45,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282739564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:45,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:45,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:53:45,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064658620] [2024-06-27 22:53:45,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:45,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:53:45,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:45,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:53:45,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:53:45,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:53:45,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 784 transitions, 16137 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:45,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:45,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:53:45,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:48,589 INFO L124 PetriNetUnfolderBase]: 7349/11233 cut-off events. [2024-06-27 22:53:48,589 INFO L125 PetriNetUnfolderBase]: For 550020/550598 co-relation queries the response was YES. [2024-06-27 22:53:48,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104935 conditions, 11233 events. 7349/11233 cut-off events. For 550020/550598 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 68567 event pairs, 2406 based on Foata normal form. 41/10633 useless extension candidates. Maximal degree in co-relation 104802. Up to 9511 conditions per place. [2024-06-27 22:53:48,723 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 578 selfloop transitions, 191 changer transitions 0/851 dead transitions. [2024-06-27 22:53:48,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 851 transitions, 18424 flow [2024-06-27 22:53:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:48,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 22:53:48,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-27 22:53:48,725 INFO L175 Difference]: Start difference. First operand has 286 places, 784 transitions, 16137 flow. Second operand 9 states and 213 transitions. [2024-06-27 22:53:48,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 851 transitions, 18424 flow [2024-06-27 22:53:50,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 851 transitions, 17873 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 22:53:50,025 INFO L231 Difference]: Finished difference. Result has 291 places, 806 transitions, 16586 flow [2024-06-27 22:53:50,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=15598, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16586, PETRI_PLACES=291, PETRI_TRANSITIONS=806} [2024-06-27 22:53:50,025 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 239 predicate places. [2024-06-27 22:53:50,025 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 806 transitions, 16586 flow [2024-06-27 22:53:50,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:50,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:50,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:50,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 22:53:50,026 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:50,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1273046519, now seen corresponding path program 2 times [2024-06-27 22:53:50,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:50,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051082084] [2024-06-27 22:53:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:50,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:50,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051082084] [2024-06-27 22:53:50,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051082084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:50,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:50,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:53:50,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000723654] [2024-06-27 22:53:50,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:50,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:53:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:53:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:53:50,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-27 22:53:50,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 806 transitions, 16586 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:50,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:50,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-27 22:53:50,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:53,419 INFO L124 PetriNetUnfolderBase]: 6357/10177 cut-off events. [2024-06-27 22:53:53,419 INFO L125 PetriNetUnfolderBase]: For 540130/540912 co-relation queries the response was YES. [2024-06-27 22:53:53,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96125 conditions, 10177 events. 6357/10177 cut-off events. For 540130/540912 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 66853 event pairs, 1314 based on Foata normal form. 254/9771 useless extension candidates. Maximal degree in co-relation 95990. Up to 7013 conditions per place. [2024-06-27 22:53:53,567 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 406 selfloop transitions, 304 changer transitions 0/920 dead transitions. [2024-06-27 22:53:53,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 920 transitions, 20310 flow [2024-06-27 22:53:53,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:53:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:53:53,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-06-27 22:53:53,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745341614906833 [2024-06-27 22:53:53,575 INFO L175 Difference]: Start difference. First operand has 291 places, 806 transitions, 16586 flow. Second operand 7 states and 185 transitions. [2024-06-27 22:53:53,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 920 transitions, 20310 flow [2024-06-27 22:53:55,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 920 transitions, 19805 flow, removed 149 selfloop flow, removed 4 redundant places. [2024-06-27 22:53:55,031 INFO L231 Difference]: Finished difference. Result has 296 places, 883 transitions, 19163 flow [2024-06-27 22:53:55,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=16237, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19163, PETRI_PLACES=296, PETRI_TRANSITIONS=883} [2024-06-27 22:53:55,032 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 244 predicate places. [2024-06-27 22:53:55,032 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 883 transitions, 19163 flow [2024-06-27 22:53:55,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:55,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:53:55,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:53:55,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 22:53:55,033 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:53:55,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:53:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash 967227510, now seen corresponding path program 1 times [2024-06-27 22:53:55,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:53:55,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109675179] [2024-06-27 22:53:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:53:55,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:53:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:53:56,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:53:56,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:53:56,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109675179] [2024-06-27 22:53:56,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109675179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:53:56,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:53:56,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:53:56,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952188250] [2024-06-27 22:53:56,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:53:56,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:53:56,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:53:56,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:53:56,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:53:56,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-06-27 22:53:56,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 883 transitions, 19163 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:53:56,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:53:56,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-06-27 22:53:56,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:53:59,638 INFO L124 PetriNetUnfolderBase]: 8064/12194 cut-off events. [2024-06-27 22:53:59,638 INFO L125 PetriNetUnfolderBase]: For 571416/571420 co-relation queries the response was YES. [2024-06-27 22:53:59,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115539 conditions, 12194 events. 8064/12194 cut-off events. For 571416/571420 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 73690 event pairs, 2516 based on Foata normal form. 9/11730 useless extension candidates. Maximal degree in co-relation 115400. Up to 10846 conditions per place. [2024-06-27 22:53:59,804 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 777 selfloop transitions, 207 changer transitions 0/991 dead transitions. [2024-06-27 22:53:59,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 991 transitions, 22755 flow [2024-06-27 22:53:59,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:53:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:53:59,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-27 22:53:59,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975845410628019 [2024-06-27 22:53:59,805 INFO L175 Difference]: Start difference. First operand has 296 places, 883 transitions, 19163 flow. Second operand 9 states and 206 transitions. [2024-06-27 22:53:59,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 991 transitions, 22755 flow [2024-06-27 22:54:01,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 991 transitions, 22422 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-27 22:54:01,572 INFO L231 Difference]: Finished difference. Result has 303 places, 939 transitions, 20826 flow [2024-06-27 22:54:01,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=18838, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=883, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=682, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=20826, PETRI_PLACES=303, PETRI_TRANSITIONS=939} [2024-06-27 22:54:01,573 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 251 predicate places. [2024-06-27 22:54:01,573 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 939 transitions, 20826 flow [2024-06-27 22:54:01,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:01,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:54:01,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:54:01,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 22:54:01,574 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:54:01,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:54:01,574 INFO L85 PathProgramCache]: Analyzing trace with hash -557071365, now seen corresponding path program 3 times [2024-06-27 22:54:01,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:54:01,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788294048] [2024-06-27 22:54:01,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:54:01,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:54:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:54:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:54:02,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:54:02,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788294048] [2024-06-27 22:54:02,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788294048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:54:02,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:54:02,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:54:02,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093019827] [2024-06-27 22:54:02,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:54:02,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:54:02,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:54:02,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:54:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:54:02,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-06-27 22:54:02,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 939 transitions, 20826 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:54:02,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:54:02,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-06-27 22:54:02,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand