./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe007_power.opt-thin001_power.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/safe007_power.opt-thin001_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe007_power.opt-thin001_power.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:13:25,809 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:13:25,885 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:13:25,891 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:13:25,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:13:25,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:13:25,925 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:13:25,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:13:25,926 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:13:25,930 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:13:25,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:13:25,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:13:25,932 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:13:25,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:13:25,933 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:13:25,934 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:13:25,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:13:25,934 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:13:25,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:13:25,935 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:13:25,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:13:25,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:13:25,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:13:25,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:13:25,936 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:13:25,936 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:13:25,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:13:25,937 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:13:25,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:13:25,938 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:13:25,939 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:13:25,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:13:25,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:13:25,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:13:25,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:13:25,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:13:25,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:13:25,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:13:25,940 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:13:25,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:13:25,941 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:13:25,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:13:25,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:13:25,941 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:13:26,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:13:26,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:13:26,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:13:26,219 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:13:26,219 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:13:26,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i [2024-06-28 00:13:27,329 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:13:27,603 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:13:27,604 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_power.opt-thin001_power.opt.i [2024-06-28 00:13:27,626 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013bfe443/18f7d88464ac48d7b23a45c881c6d49c/FLAGba358b0a8 [2024-06-28 00:13:27,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013bfe443/18f7d88464ac48d7b23a45c881c6d49c [2024-06-28 00:13:27,644 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:13:27,645 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:13:27,647 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe007_power.opt-thin001_power.opt.yml/witness.yml [2024-06-28 00:13:27,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:13:27,737 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:13:27,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:13:27,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:13:27,743 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:13:27,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:13:27" (1/2) ... [2024-06-28 00:13:27,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523a4947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:13:27, skipping insertion in model container [2024-06-28 00:13:27,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:13:27" (1/2) ... [2024-06-28 00:13:27,747 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@686a03e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:13:27, skipping insertion in model container [2024-06-28 00:13:27,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:13:27" (2/2) ... [2024-06-28 00:13:27,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523a4947 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:27, skipping insertion in model container [2024-06-28 00:13:27,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:13:27" (2/2) ... [2024-06-28 00:13:27,750 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:13:27,782 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:13:27,783 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:13:27,784 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:13:27,784 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ! multithreaded || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )__unbuffered_p2_EAX$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:13:27,784 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:13:27,785 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-28 00:13:27,828 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:13:28,181 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:13:28,194 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:13:28,492 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:13:28,525 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:13:28,526 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28 WrapperNode [2024-06-28 00:13:28,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:13:28,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:13:28,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:13:28,527 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:13:28,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (1/1) ... [2024-06-28 00:13:28,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (1/1) ... [2024-06-28 00:13:28,609 INFO L138 Inliner]: procedures = 175, calls = 69, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 210 [2024-06-28 00:13:28,610 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:13:28,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:13:28,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:13:28,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:13:28,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (1/1) ... [2024-06-28 00:13:28,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (1/1) ... [2024-06-28 00:13:28,626 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (1/1) ... [2024-06-28 00:13:28,647 INFO L175 MemorySlicer]: Split 27 memory accesses to 2 slices as follows [2, 25]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-28 00:13:28,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (1/1) ... [2024-06-28 00:13:28,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (1/1) ... [2024-06-28 00:13:28,664 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (1/1) ... [2024-06-28 00:13:28,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (1/1) ... [2024-06-28 00:13:28,672 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (1/1) ... [2024-06-28 00:13:28,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (1/1) ... [2024-06-28 00:13:28,684 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:13:28,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:13:28,684 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:13:28,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:13:28,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (1/1) ... [2024-06-28 00:13:28,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:13:28,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:13:28,722 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) [2024-06-28 00:13:28,752 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 [2024-06-28 00:13:28,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 00:13:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 00:13:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 00:13:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 00:13:28,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:13:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:13:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:13:28,766 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:13:28,766 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:13:28,766 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:13:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:13:28,767 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:13:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:13:28,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 00:13:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:13:28,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:13:28,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:13:28,770 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:13:28,941 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:13:28,943 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:13:29,650 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:13:29,650 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:13:30,074 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:13:30,074 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:13:30,075 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:13:30 BoogieIcfgContainer [2024-06-28 00:13:30,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:13:30,078 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:13:30,078 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:13:30,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:13:30,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:13:27" (1/4) ... [2024-06-28 00:13:30,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f95145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:13:30, skipping insertion in model container [2024-06-28 00:13:30,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:13:27" (2/4) ... [2024-06-28 00:13:30,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f95145 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:13:30, skipping insertion in model container [2024-06-28 00:13:30,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:13:28" (3/4) ... [2024-06-28 00:13:30,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f95145 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:13:30, skipping insertion in model container [2024-06-28 00:13:30,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:13:30" (4/4) ... [2024-06-28 00:13:30,086 INFO L112 eAbstractionObserver]: Analyzing ICFG safe007_power.opt-thin001_power.opt.i [2024-06-28 00:13:30,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:13:30,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:13:30,104 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:13:30,189 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:13:30,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 00:13:30,266 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-28 00:13:30,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:13:30,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:13:30,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 00:13:30,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-28 00:13:30,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:13:30,298 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;@3acb3b57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:13:30,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 00:13:30,304 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:13:30,304 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 00:13:30,304 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:13:30,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:30,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:13:30,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:30,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:30,310 INFO L85 PathProgramCache]: Analyzing trace with hash 723477404, now seen corresponding path program 1 times [2024-06-28 00:13:30,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:30,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498867742] [2024-06-28 00:13:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:30,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:33,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:33,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498867742] [2024-06-28 00:13:33,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498867742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:33,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:33,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:13:33,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311772585] [2024-06-28 00:13:33,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:33,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:13:33,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:13:33,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:13:33,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 00:13:33,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:33,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:33,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 00:13:33,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:34,281 INFO L124 PetriNetUnfolderBase]: 1100/1685 cut-off events. [2024-06-28 00:13:34,282 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-06-28 00:13:34,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 1685 events. 1100/1685 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7943 event pairs, 708 based on Foata normal form. 1/1658 useless extension candidates. Maximal degree in co-relation 3406. Up to 1660 conditions per place. [2024-06-28 00:13:34,297 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 35 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 00:13:34,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 183 flow [2024-06-28 00:13:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:13:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:13:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2024-06-28 00:13:34,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 00:13:34,310 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 69 transitions. [2024-06-28 00:13:34,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 183 flow [2024-06-28 00:13:34,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 178 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:13:34,315 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-28 00:13:34,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-28 00:13:34,319 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-28 00:13:34,319 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-28 00:13:34,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:34,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:34,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:34,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:13:34,321 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:34,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:34,321 INFO L85 PathProgramCache]: Analyzing trace with hash 971046024, now seen corresponding path program 1 times [2024-06-28 00:13:34,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:34,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913790811] [2024-06-28 00:13:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:34,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:37,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:37,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:37,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913790811] [2024-06-28 00:13:37,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913790811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:37,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:37,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:13:37,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105041462] [2024-06-28 00:13:37,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:37,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:13:37,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:37,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:13:37,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:13:37,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 00:13:37,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2024-06-28 00:13:37,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:37,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 00:13:37,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:38,514 INFO L124 PetriNetUnfolderBase]: 1400/2123 cut-off events. [2024-06-28 00:13:38,514 INFO L125 PetriNetUnfolderBase]: For 397/402 co-relation queries the response was YES. [2024-06-28 00:13:38,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4875 conditions, 2123 events. 1400/2123 cut-off events. For 397/402 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9775 event pairs, 663 based on Foata normal form. 7/2128 useless extension candidates. Maximal degree in co-relation 4863. Up to 2059 conditions per place. [2024-06-28 00:13:38,533 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 46 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-06-28 00:13:38,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 264 flow [2024-06-28 00:13:38,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:13:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:13:38,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-06-28 00:13:38,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 00:13:38,537 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 88 transitions. [2024-06-28 00:13:38,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 264 flow [2024-06-28 00:13:38,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:13:38,542 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 138 flow [2024-06-28 00:13:38,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-28 00:13:38,545 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-28 00:13:38,545 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 138 flow [2024-06-28 00:13:38,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 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) [2024-06-28 00:13:38,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:38,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:38,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:13:38,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:38,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:38,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1937434299, now seen corresponding path program 1 times [2024-06-28 00:13:38,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:38,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830447442] [2024-06-28 00:13:38,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:38,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:42,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:42,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830447442] [2024-06-28 00:13:42,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830447442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:42,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:42,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:13:42,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266001693] [2024-06-28 00:13:42,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:42,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:13:42,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:42,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:13:42,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:13:42,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 00:13:42,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:42,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:42,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 00:13:42,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:43,182 INFO L124 PetriNetUnfolderBase]: 1391/2108 cut-off events. [2024-06-28 00:13:43,183 INFO L125 PetriNetUnfolderBase]: For 1132/1142 co-relation queries the response was YES. [2024-06-28 00:13:43,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5367 conditions, 2108 events. 1391/2108 cut-off events. For 1132/1142 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9700 event pairs, 494 based on Foata normal form. 14/2120 useless extension candidates. Maximal degree in co-relation 5353. Up to 2006 conditions per place. [2024-06-28 00:13:43,197 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 51 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2024-06-28 00:13:43,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 324 flow [2024-06-28 00:13:43,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:13:43,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:13:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-06-28 00:13:43,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49047619047619045 [2024-06-28 00:13:43,204 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 138 flow. Second operand 5 states and 103 transitions. [2024-06-28 00:13:43,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 324 flow [2024-06-28 00:13:43,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 310 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 00:13:43,208 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 159 flow [2024-06-28 00:13:43,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2024-06-28 00:13:43,210 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-06-28 00:13:43,210 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 159 flow [2024-06-28 00:13:43,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:43,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:43,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:43,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:13:43,211 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:43,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:43,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2107894993, now seen corresponding path program 1 times [2024-06-28 00:13:43,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:43,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146913841] [2024-06-28 00:13:43,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:43,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:46,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:46,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:46,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146913841] [2024-06-28 00:13:46,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146913841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:46,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:46,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:13:46,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743328251] [2024-06-28 00:13:46,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:46,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:13:46,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:46,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:13:46,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:13:46,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 00:13:46,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:46,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:46,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 00:13:46,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:47,432 INFO L124 PetriNetUnfolderBase]: 1079/1653 cut-off events. [2024-06-28 00:13:47,433 INFO L125 PetriNetUnfolderBase]: For 1722/1722 co-relation queries the response was YES. [2024-06-28 00:13:47,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 1653 events. 1079/1653 cut-off events. For 1722/1722 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7883 event pairs, 486 based on Foata normal form. 3/1654 useless extension candidates. Maximal degree in co-relation 4574. Up to 1607 conditions per place. [2024-06-28 00:13:47,443 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 46 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-28 00:13:47,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 63 transitions, 355 flow [2024-06-28 00:13:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:13:47,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:13:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-28 00:13:47,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-28 00:13:47,446 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 159 flow. Second operand 5 states and 93 transitions. [2024-06-28 00:13:47,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 63 transitions, 355 flow [2024-06-28 00:13:47,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 330 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 00:13:47,452 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 220 flow [2024-06-28 00:13:47,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-06-28 00:13:47,454 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-28 00:13:47,454 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 220 flow [2024-06-28 00:13:47,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:47,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:47,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:47,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:13:47,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:47,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:47,456 INFO L85 PathProgramCache]: Analyzing trace with hash 920237046, now seen corresponding path program 1 times [2024-06-28 00:13:47,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:47,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761735119] [2024-06-28 00:13:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:47,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:50,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:50,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761735119] [2024-06-28 00:13:50,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761735119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:50,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:50,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:13:50,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771779602] [2024-06-28 00:13:50,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:50,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:13:50,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:50,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:13:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:13:50,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 00:13:50,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:50,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:50,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 00:13:50,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:51,532 INFO L124 PetriNetUnfolderBase]: 1074/1646 cut-off events. [2024-06-28 00:13:51,532 INFO L125 PetriNetUnfolderBase]: For 2623/2623 co-relation queries the response was YES. [2024-06-28 00:13:51,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5066 conditions, 1646 events. 1074/1646 cut-off events. For 2623/2623 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7627 event pairs, 481 based on Foata normal form. 2/1646 useless extension candidates. Maximal degree in co-relation 5045. Up to 1599 conditions per place. [2024-06-28 00:13:51,548 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 54 selfloop transitions, 13 changer transitions 0/72 dead transitions. [2024-06-28 00:13:51,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 434 flow [2024-06-28 00:13:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:13:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:13:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 00:13:51,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 00:13:51,550 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 220 flow. Second operand 6 states and 106 transitions. [2024-06-28 00:13:51,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 434 flow [2024-06-28 00:13:51,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 72 transitions, 434 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:13:51,555 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 306 flow [2024-06-28 00:13:51,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-28 00:13:51,556 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2024-06-28 00:13:51,556 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 306 flow [2024-06-28 00:13:51,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:51,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:51,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:51,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:13:51,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:51,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:51,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2092611264, now seen corresponding path program 1 times [2024-06-28 00:13:51,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:51,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804563524] [2024-06-28 00:13:51,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:51,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:56,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:56,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804563524] [2024-06-28 00:13:56,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804563524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:56,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:56,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:13:56,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644779823] [2024-06-28 00:13:56,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:56,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:13:56,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:56,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:13:56,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:13:56,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 00:13:56,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:56,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:56,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 00:13:56,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:56,946 INFO L124 PetriNetUnfolderBase]: 1069/1640 cut-off events. [2024-06-28 00:13:56,946 INFO L125 PetriNetUnfolderBase]: For 3893/3895 co-relation queries the response was YES. [2024-06-28 00:13:56,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5521 conditions, 1640 events. 1069/1640 cut-off events. For 3893/3895 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7632 event pairs, 468 based on Foata normal form. 4/1642 useless extension candidates. Maximal degree in co-relation 5494. Up to 1581 conditions per place. [2024-06-28 00:13:56,962 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 55 selfloop transitions, 15 changer transitions 0/75 dead transitions. [2024-06-28 00:13:56,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 75 transitions, 510 flow [2024-06-28 00:13:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:13:56,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:13:56,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 00:13:56,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2024-06-28 00:13:56,965 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 306 flow. Second operand 6 states and 107 transitions. [2024-06-28 00:13:56,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 75 transitions, 510 flow [2024-06-28 00:13:56,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 75 transitions, 488 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 00:13:56,973 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 348 flow [2024-06-28 00:13:56,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-06-28 00:13:56,977 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-06-28 00:13:56,977 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 348 flow [2024-06-28 00:13:56,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:13:56,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:56,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:56,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:13:56,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:56,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:56,978 INFO L85 PathProgramCache]: Analyzing trace with hash 439761505, now seen corresponding path program 1 times [2024-06-28 00:13:56,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:56,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70152566] [2024-06-28 00:13:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:56,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:01,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:01,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:01,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70152566] [2024-06-28 00:14:01,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70152566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:01,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:01,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:14:01,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047546690] [2024-06-28 00:14:01,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:01,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:14:01,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:01,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:14:01,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:14:01,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:14:01,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 348 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:01,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:01,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:14:01,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:03,297 INFO L124 PetriNetUnfolderBase]: 1493/2271 cut-off events. [2024-06-28 00:14:03,297 INFO L125 PetriNetUnfolderBase]: For 6289/6298 co-relation queries the response was YES. [2024-06-28 00:14:03,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8122 conditions, 2271 events. 1493/2271 cut-off events. For 6289/6298 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10485 event pairs, 487 based on Foata normal form. 5/2274 useless extension candidates. Maximal degree in co-relation 8093. Up to 2027 conditions per place. [2024-06-28 00:14:03,320 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 94 selfloop transitions, 53 changer transitions 0/151 dead transitions. [2024-06-28 00:14:03,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 151 transitions, 1141 flow [2024-06-28 00:14:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:14:03,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:14:03,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 00:14:03,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2024-06-28 00:14:03,323 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 348 flow. Second operand 10 states and 187 transitions. [2024-06-28 00:14:03,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 151 transitions, 1141 flow [2024-06-28 00:14:03,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 151 transitions, 1091 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 00:14:03,333 INFO L231 Difference]: Finished difference. Result has 75 places, 100 transitions, 817 flow [2024-06-28 00:14:03,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=817, PETRI_PLACES=75, PETRI_TRANSITIONS=100} [2024-06-28 00:14:03,335 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-28 00:14:03,335 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 100 transitions, 817 flow [2024-06-28 00:14:03,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:03,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:03,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:03,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:14:03,336 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:03,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash -280607023, now seen corresponding path program 2 times [2024-06-28 00:14:03,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:03,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557772478] [2024-06-28 00:14:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:03,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:07,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:07,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557772478] [2024-06-28 00:14:07,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557772478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:07,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:07,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:14:07,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926934497] [2024-06-28 00:14:07,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:07,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:14:07,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:07,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:14:07,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:14:07,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:14:07,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 100 transitions, 817 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:07,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:07,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:14:07,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:09,137 INFO L124 PetriNetUnfolderBase]: 1583/2418 cut-off events. [2024-06-28 00:14:09,138 INFO L125 PetriNetUnfolderBase]: For 12319/12345 co-relation queries the response was YES. [2024-06-28 00:14:09,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10439 conditions, 2418 events. 1583/2418 cut-off events. For 12319/12345 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11396 event pairs, 493 based on Foata normal form. 24/2438 useless extension candidates. Maximal degree in co-relation 10402. Up to 2094 conditions per place. [2024-06-28 00:14:09,156 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 80 selfloop transitions, 103 changer transitions 0/187 dead transitions. [2024-06-28 00:14:09,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 187 transitions, 1773 flow [2024-06-28 00:14:09,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:14:09,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:14:09,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 00:14:09,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 00:14:09,158 INFO L175 Difference]: Start difference. First operand has 75 places, 100 transitions, 817 flow. Second operand 9 states and 159 transitions. [2024-06-28 00:14:09,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 187 transitions, 1773 flow [2024-06-28 00:14:09,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 187 transitions, 1643 flow, removed 65 selfloop flow, removed 0 redundant places. [2024-06-28 00:14:09,178 INFO L231 Difference]: Finished difference. Result has 84 places, 152 transitions, 1416 flow [2024-06-28 00:14:09,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1416, PETRI_PLACES=84, PETRI_TRANSITIONS=152} [2024-06-28 00:14:09,179 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-06-28 00:14:09,179 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 152 transitions, 1416 flow [2024-06-28 00:14:09,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:09,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:09,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:09,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:14:09,180 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:09,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:09,180 INFO L85 PathProgramCache]: Analyzing trace with hash -298361653, now seen corresponding path program 3 times [2024-06-28 00:14:09,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:09,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330928789] [2024-06-28 00:14:09,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:09,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:12,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:12,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:12,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330928789] [2024-06-28 00:14:12,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330928789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:12,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:12,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:14:12,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872586310] [2024-06-28 00:14:12,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:12,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:14:12,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:12,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:14:12,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:14:12,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:14:12,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 152 transitions, 1416 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:12,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:12,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:14:12,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:13,383 INFO L124 PetriNetUnfolderBase]: 1568/2400 cut-off events. [2024-06-28 00:14:13,383 INFO L125 PetriNetUnfolderBase]: For 14448/14494 co-relation queries the response was YES. [2024-06-28 00:14:13,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11027 conditions, 2400 events. 1568/2400 cut-off events. For 14448/14494 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11337 event pairs, 505 based on Foata normal form. 43/2440 useless extension candidates. Maximal degree in co-relation 10986. Up to 2203 conditions per place. [2024-06-28 00:14:13,402 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 121 selfloop transitions, 43 changer transitions 0/168 dead transitions. [2024-06-28 00:14:13,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 168 transitions, 1764 flow [2024-06-28 00:14:13,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:14:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:14:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 00:14:13,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391156462585034 [2024-06-28 00:14:13,404 INFO L175 Difference]: Start difference. First operand has 84 places, 152 transitions, 1416 flow. Second operand 7 states and 115 transitions. [2024-06-28 00:14:13,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 168 transitions, 1764 flow [2024-06-28 00:14:13,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 168 transitions, 1637 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-28 00:14:13,429 INFO L231 Difference]: Finished difference. Result has 88 places, 147 transitions, 1349 flow [2024-06-28 00:14:13,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1349, PETRI_PLACES=88, PETRI_TRANSITIONS=147} [2024-06-28 00:14:13,429 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 45 predicate places. [2024-06-28 00:14:13,430 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 147 transitions, 1349 flow [2024-06-28 00:14:13,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:13,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:13,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:13,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:14:13,430 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:13,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:13,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1778750739, now seen corresponding path program 4 times [2024-06-28 00:14:13,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:13,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880364031] [2024-06-28 00:14:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:13,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:16,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:16,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:16,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880364031] [2024-06-28 00:14:16,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880364031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:16,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:16,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:14:16,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999637110] [2024-06-28 00:14:16,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:16,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:14:16,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:14:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:14:17,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:14:17,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 147 transitions, 1349 flow. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:17,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:17,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:14:17,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:18,194 INFO L124 PetriNetUnfolderBase]: 1624/2481 cut-off events. [2024-06-28 00:14:18,194 INFO L125 PetriNetUnfolderBase]: For 11379/11421 co-relation queries the response was YES. [2024-06-28 00:14:18,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11036 conditions, 2481 events. 1624/2481 cut-off events. For 11379/11421 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11740 event pairs, 500 based on Foata normal form. 35/2513 useless extension candidates. Maximal degree in co-relation 10994. Up to 2270 conditions per place. [2024-06-28 00:14:18,211 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 124 selfloop transitions, 72 changer transitions 0/200 dead transitions. [2024-06-28 00:14:18,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 200 transitions, 2008 flow [2024-06-28 00:14:18,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:14:18,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:14:18,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-28 00:14:18,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48412698412698413 [2024-06-28 00:14:18,213 INFO L175 Difference]: Start difference. First operand has 88 places, 147 transitions, 1349 flow. Second operand 6 states and 122 transitions. [2024-06-28 00:14:18,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 200 transitions, 2008 flow [2024-06-28 00:14:18,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 200 transitions, 1919 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:14:18,229 INFO L231 Difference]: Finished difference. Result has 89 places, 167 transitions, 1605 flow [2024-06-28 00:14:18,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1605, PETRI_PLACES=89, PETRI_TRANSITIONS=167} [2024-06-28 00:14:18,230 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-06-28 00:14:18,230 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 167 transitions, 1605 flow [2024-06-28 00:14:18,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:18,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:18,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:18,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:14:18,231 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:18,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:18,231 INFO L85 PathProgramCache]: Analyzing trace with hash 446441509, now seen corresponding path program 1 times [2024-06-28 00:14:18,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:18,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893697171] [2024-06-28 00:14:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:18,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:22,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:22,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893697171] [2024-06-28 00:14:22,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893697171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:22,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:22,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:14:22,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195608432] [2024-06-28 00:14:22,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:22,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:14:22,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:22,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:14:22,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:14:22,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 00:14:22,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 167 transitions, 1605 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:22,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:22,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 00:14:22,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:23,425 INFO L124 PetriNetUnfolderBase]: 1503/2345 cut-off events. [2024-06-28 00:14:23,425 INFO L125 PetriNetUnfolderBase]: For 12191/12238 co-relation queries the response was YES. [2024-06-28 00:14:23,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10625 conditions, 2345 events. 1503/2345 cut-off events. For 12191/12238 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11222 event pairs, 500 based on Foata normal form. 46/2386 useless extension candidates. Maximal degree in co-relation 10584. Up to 2118 conditions per place. [2024-06-28 00:14:23,443 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 165 selfloop transitions, 21 changer transitions 0/193 dead transitions. [2024-06-28 00:14:23,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 193 transitions, 2069 flow [2024-06-28 00:14:23,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:14:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:14:23,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 00:14:23,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-28 00:14:23,445 INFO L175 Difference]: Start difference. First operand has 89 places, 167 transitions, 1605 flow. Second operand 7 states and 123 transitions. [2024-06-28 00:14:23,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 193 transitions, 2069 flow [2024-06-28 00:14:23,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 193 transitions, 1947 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 00:14:23,462 INFO L231 Difference]: Finished difference. Result has 92 places, 169 transitions, 1562 flow [2024-06-28 00:14:23,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1562, PETRI_PLACES=92, PETRI_TRANSITIONS=169} [2024-06-28 00:14:23,463 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 49 predicate places. [2024-06-28 00:14:23,463 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 169 transitions, 1562 flow [2024-06-28 00:14:23,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:23,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:23,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:23,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:14:23,464 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:23,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:23,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1650852668, now seen corresponding path program 1 times [2024-06-28 00:14:23,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:23,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049219749] [2024-06-28 00:14:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:23,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:26,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:26,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:26,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049219749] [2024-06-28 00:14:26,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049219749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:26,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:26,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:14:26,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793112796] [2024-06-28 00:14:26,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:26,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:14:26,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:26,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:14:26,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:14:26,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:14:26,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 169 transitions, 1562 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:26,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:26,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:14:26,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:27,977 INFO L124 PetriNetUnfolderBase]: 1621/2482 cut-off events. [2024-06-28 00:14:27,978 INFO L125 PetriNetUnfolderBase]: For 13316/13348 co-relation queries the response was YES. [2024-06-28 00:14:27,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11354 conditions, 2482 events. 1621/2482 cut-off events. For 13316/13348 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11775 event pairs, 468 based on Foata normal form. 26/2504 useless extension candidates. Maximal degree in co-relation 11313. Up to 2210 conditions per place. [2024-06-28 00:14:27,994 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 168 selfloop transitions, 52 changer transitions 0/224 dead transitions. [2024-06-28 00:14:27,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 224 transitions, 2271 flow [2024-06-28 00:14:27,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:14:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:14:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 00:14:27,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-28 00:14:27,997 INFO L175 Difference]: Start difference. First operand has 92 places, 169 transitions, 1562 flow. Second operand 9 states and 154 transitions. [2024-06-28 00:14:27,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 224 transitions, 2271 flow [2024-06-28 00:14:28,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 224 transitions, 2212 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 00:14:28,020 INFO L231 Difference]: Finished difference. Result has 99 places, 187 transitions, 1845 flow [2024-06-28 00:14:28,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1845, PETRI_PLACES=99, PETRI_TRANSITIONS=187} [2024-06-28 00:14:28,021 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 56 predicate places. [2024-06-28 00:14:28,021 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 187 transitions, 1845 flow [2024-06-28 00:14:28,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:28,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:28,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:28,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:14:28,022 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:28,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:28,022 INFO L85 PathProgramCache]: Analyzing trace with hash 5665752, now seen corresponding path program 2 times [2024-06-28 00:14:28,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:28,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298789411] [2024-06-28 00:14:28,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:28,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:31,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:31,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298789411] [2024-06-28 00:14:31,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298789411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:31,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:31,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:14:31,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568364620] [2024-06-28 00:14:31,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:31,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:14:31,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:31,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:14:31,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:14:31,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:14:31,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 187 transitions, 1845 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:31,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:31,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:14:31,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:32,179 INFO L124 PetriNetUnfolderBase]: 1652/2531 cut-off events. [2024-06-28 00:14:32,179 INFO L125 PetriNetUnfolderBase]: For 16664/16696 co-relation queries the response was YES. [2024-06-28 00:14:32,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12260 conditions, 2531 events. 1652/2531 cut-off events. For 16664/16696 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12043 event pairs, 488 based on Foata normal form. 26/2554 useless extension candidates. Maximal degree in co-relation 12215. Up to 2310 conditions per place. [2024-06-28 00:14:32,198 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 193 selfloop transitions, 30 changer transitions 0/227 dead transitions. [2024-06-28 00:14:32,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 227 transitions, 2507 flow [2024-06-28 00:14:32,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:14:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:14:32,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 00:14:32,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 00:14:32,200 INFO L175 Difference]: Start difference. First operand has 99 places, 187 transitions, 1845 flow. Second operand 8 states and 138 transitions. [2024-06-28 00:14:32,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 227 transitions, 2507 flow [2024-06-28 00:14:32,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 227 transitions, 2435 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 00:14:32,226 INFO L231 Difference]: Finished difference. Result has 105 places, 193 transitions, 1919 flow [2024-06-28 00:14:32,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1919, PETRI_PLACES=105, PETRI_TRANSITIONS=193} [2024-06-28 00:14:32,227 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2024-06-28 00:14:32,227 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 193 transitions, 1919 flow [2024-06-28 00:14:32,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:32,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:32,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:32,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:14:32,228 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:32,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:32,228 INFO L85 PathProgramCache]: Analyzing trace with hash 5660172, now seen corresponding path program 3 times [2024-06-28 00:14:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:32,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404666246] [2024-06-28 00:14:32,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:32,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:35,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:35,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:35,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404666246] [2024-06-28 00:14:35,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404666246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:35,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:35,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:14:35,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374592189] [2024-06-28 00:14:35,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:35,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:14:35,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:35,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:14:35,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:14:35,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:14:35,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 193 transitions, 1919 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:35,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:35,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:14:35,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:36,155 INFO L124 PetriNetUnfolderBase]: 1647/2524 cut-off events. [2024-06-28 00:14:36,155 INFO L125 PetriNetUnfolderBase]: For 19648/19680 co-relation queries the response was YES. [2024-06-28 00:14:36,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12595 conditions, 2524 events. 1647/2524 cut-off events. For 19648/19680 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12004 event pairs, 488 based on Foata normal form. 26/2547 useless extension candidates. Maximal degree in co-relation 12548. Up to 2350 conditions per place. [2024-06-28 00:14:36,171 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 191 selfloop transitions, 24 changer transitions 0/219 dead transitions. [2024-06-28 00:14:36,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 219 transitions, 2431 flow [2024-06-28 00:14:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:14:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:14:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 00:14:36,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:14:36,175 INFO L175 Difference]: Start difference. First operand has 105 places, 193 transitions, 1919 flow. Second operand 8 states and 126 transitions. [2024-06-28 00:14:36,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 219 transitions, 2431 flow [2024-06-28 00:14:36,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 219 transitions, 2346 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 00:14:36,207 INFO L231 Difference]: Finished difference. Result has 109 places, 193 transitions, 1891 flow [2024-06-28 00:14:36,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1891, PETRI_PLACES=109, PETRI_TRANSITIONS=193} [2024-06-28 00:14:36,208 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-06-28 00:14:36,208 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 193 transitions, 1891 flow [2024-06-28 00:14:36,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:36,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:36,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:36,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:14:36,209 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:36,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:36,209 INFO L85 PathProgramCache]: Analyzing trace with hash 693303642, now seen corresponding path program 4 times [2024-06-28 00:14:36,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:36,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52625057] [2024-06-28 00:14:36,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:36,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:39,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:39,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52625057] [2024-06-28 00:14:39,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52625057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:39,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:39,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:14:39,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292469397] [2024-06-28 00:14:39,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:39,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:14:39,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:39,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:14:39,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:14:39,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:14:39,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 193 transitions, 1891 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:39,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:39,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:14:39,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:40,647 INFO L124 PetriNetUnfolderBase]: 1651/2526 cut-off events. [2024-06-28 00:14:40,648 INFO L125 PetriNetUnfolderBase]: For 20598/20630 co-relation queries the response was YES. [2024-06-28 00:14:40,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12700 conditions, 2526 events. 1651/2526 cut-off events. For 20598/20630 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 12006 event pairs, 468 based on Foata normal form. 26/2549 useless extension candidates. Maximal degree in co-relation 12651. Up to 2340 conditions per place. [2024-06-28 00:14:40,665 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 192 selfloop transitions, 38 changer transitions 0/234 dead transitions. [2024-06-28 00:14:40,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 234 transitions, 2510 flow [2024-06-28 00:14:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:14:40,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:14:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 00:14:40,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2024-06-28 00:14:40,670 INFO L175 Difference]: Start difference. First operand has 109 places, 193 transitions, 1891 flow. Second operand 7 states and 130 transitions. [2024-06-28 00:14:40,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 234 transitions, 2510 flow [2024-06-28 00:14:40,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 234 transitions, 2437 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 00:14:40,701 INFO L231 Difference]: Finished difference. Result has 108 places, 200 transitions, 1978 flow [2024-06-28 00:14:40,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1978, PETRI_PLACES=108, PETRI_TRANSITIONS=200} [2024-06-28 00:14:40,702 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 65 predicate places. [2024-06-28 00:14:40,702 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 200 transitions, 1978 flow [2024-06-28 00:14:40,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:40,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:40,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:40,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:14:40,703 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:40,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:40,704 INFO L85 PathProgramCache]: Analyzing trace with hash 399694589, now seen corresponding path program 1 times [2024-06-28 00:14:40,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:40,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430304928] [2024-06-28 00:14:40,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:40,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:44,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:44,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430304928] [2024-06-28 00:14:44,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430304928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:44,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:44,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:14:44,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062205957] [2024-06-28 00:14:44,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:44,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:14:44,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:44,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:14:44,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:14:44,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 00:14:44,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 200 transitions, 1978 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:44,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:44,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 00:14:44,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:45,977 INFO L124 PetriNetUnfolderBase]: 1533/2390 cut-off events. [2024-06-28 00:14:45,977 INFO L125 PetriNetUnfolderBase]: For 23809/23832 co-relation queries the response was YES. [2024-06-28 00:14:45,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12446 conditions, 2390 events. 1533/2390 cut-off events. For 23809/23832 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 11350 event pairs, 505 based on Foata normal form. 20/2405 useless extension candidates. Maximal degree in co-relation 12399. Up to 2278 conditions per place. [2024-06-28 00:14:45,994 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 181 selfloop transitions, 15 changer transitions 0/203 dead transitions. [2024-06-28 00:14:45,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 203 transitions, 2315 flow [2024-06-28 00:14:45,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:14:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:14:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-28 00:14:45,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 00:14:45,996 INFO L175 Difference]: Start difference. First operand has 108 places, 200 transitions, 1978 flow. Second operand 6 states and 93 transitions. [2024-06-28 00:14:45,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 203 transitions, 2315 flow [2024-06-28 00:14:46,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 203 transitions, 2228 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 00:14:46,027 INFO L231 Difference]: Finished difference. Result has 111 places, 194 transitions, 1851 flow [2024-06-28 00:14:46,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1812, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1851, PETRI_PLACES=111, PETRI_TRANSITIONS=194} [2024-06-28 00:14:46,028 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 68 predicate places. [2024-06-28 00:14:46,028 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 194 transitions, 1851 flow [2024-06-28 00:14:46,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:46,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:46,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:46,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:14:46,029 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:46,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:46,030 INFO L85 PathProgramCache]: Analyzing trace with hash -366035030, now seen corresponding path program 1 times [2024-06-28 00:14:46,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:46,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734692098] [2024-06-28 00:14:46,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:46,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:50,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:50,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734692098] [2024-06-28 00:14:50,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734692098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:50,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:50,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:14:50,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155601567] [2024-06-28 00:14:50,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:50,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:14:50,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:50,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:14:50,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:14:50,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:14:50,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 194 transitions, 1851 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:50,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:50,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:14:50,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:51,626 INFO L124 PetriNetUnfolderBase]: 1739/2666 cut-off events. [2024-06-28 00:14:51,627 INFO L125 PetriNetUnfolderBase]: For 24877/24893 co-relation queries the response was YES. [2024-06-28 00:14:51,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13555 conditions, 2666 events. 1739/2666 cut-off events. For 24877/24893 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12867 event pairs, 432 based on Foata normal form. 18/2680 useless extension candidates. Maximal degree in co-relation 13506. Up to 2168 conditions per place. [2024-06-28 00:14:51,643 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 125 selfloop transitions, 118 changer transitions 0/247 dead transitions. [2024-06-28 00:14:51,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 247 transitions, 2633 flow [2024-06-28 00:14:51,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:14:51,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:14:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 00:14:51,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-28 00:14:51,645 INFO L175 Difference]: Start difference. First operand has 111 places, 194 transitions, 1851 flow. Second operand 9 states and 167 transitions. [2024-06-28 00:14:51,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 247 transitions, 2633 flow [2024-06-28 00:14:51,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 247 transitions, 2571 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 00:14:51,675 INFO L231 Difference]: Finished difference. Result has 117 places, 204 transitions, 2214 flow [2024-06-28 00:14:51,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2214, PETRI_PLACES=117, PETRI_TRANSITIONS=204} [2024-06-28 00:14:51,675 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2024-06-28 00:14:51,676 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 204 transitions, 2214 flow [2024-06-28 00:14:51,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:51,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:51,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:51,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:14:51,676 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:51,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash 919222186, now seen corresponding path program 2 times [2024-06-28 00:14:51,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:51,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312779298] [2024-06-28 00:14:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:51,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:14:55,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:55,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312779298] [2024-06-28 00:14:55,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312779298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:55,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:55,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:14:55,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159977571] [2024-06-28 00:14:55,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:55,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:14:55,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:55,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:14:55,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:14:55,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:14:55,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 204 transitions, 2214 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:55,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:55,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:14:55,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:57,387 INFO L124 PetriNetUnfolderBase]: 1770/2715 cut-off events. [2024-06-28 00:14:57,388 INFO L125 PetriNetUnfolderBase]: For 29256/29272 co-relation queries the response was YES. [2024-06-28 00:14:57,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14813 conditions, 2715 events. 1770/2715 cut-off events. For 29256/29272 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 13129 event pairs, 451 based on Foata normal form. 18/2729 useless extension candidates. Maximal degree in co-relation 14761. Up to 2345 conditions per place. [2024-06-28 00:14:57,405 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 129 selfloop transitions, 112 changer transitions 0/245 dead transitions. [2024-06-28 00:14:57,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 245 transitions, 2866 flow [2024-06-28 00:14:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:14:57,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:14:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 00:14:57,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 00:14:57,407 INFO L175 Difference]: Start difference. First operand has 117 places, 204 transitions, 2214 flow. Second operand 9 states and 162 transitions. [2024-06-28 00:14:57,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 245 transitions, 2866 flow [2024-06-28 00:14:57,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 245 transitions, 2796 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 00:14:57,443 INFO L231 Difference]: Finished difference. Result has 124 places, 207 transitions, 2439 flow [2024-06-28 00:14:57,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2439, PETRI_PLACES=124, PETRI_TRANSITIONS=207} [2024-06-28 00:14:57,444 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-06-28 00:14:57,444 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 207 transitions, 2439 flow [2024-06-28 00:14:57,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:14:57,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:57,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:57,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:14:57,444 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:57,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:57,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1037309866, now seen corresponding path program 3 times [2024-06-28 00:14:57,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:57,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550114894] [2024-06-28 00:14:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:57,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:00,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:00,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:00,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550114894] [2024-06-28 00:15:00,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550114894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:00,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:00,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:00,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810182172] [2024-06-28 00:15:00,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:00,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:00,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:00,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:00,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:00,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:15:00,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 207 transitions, 2439 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:00,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:00,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:15:00,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:02,258 INFO L124 PetriNetUnfolderBase]: 1765/2718 cut-off events. [2024-06-28 00:15:02,258 INFO L125 PetriNetUnfolderBase]: For 33729/33745 co-relation queries the response was YES. [2024-06-28 00:15:02,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15108 conditions, 2718 events. 1765/2718 cut-off events. For 33729/33745 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13278 event pairs, 494 based on Foata normal form. 20/2735 useless extension candidates. Maximal degree in co-relation 15054. Up to 2474 conditions per place. [2024-06-28 00:15:02,274 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 185 selfloop transitions, 47 changer transitions 0/236 dead transitions. [2024-06-28 00:15:02,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 236 transitions, 3012 flow [2024-06-28 00:15:02,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:15:02,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:15:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 00:15:02,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 00:15:02,276 INFO L175 Difference]: Start difference. First operand has 124 places, 207 transitions, 2439 flow. Second operand 8 states and 130 transitions. [2024-06-28 00:15:02,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 236 transitions, 3012 flow [2024-06-28 00:15:02,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 236 transitions, 2761 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 00:15:02,312 INFO L231 Difference]: Finished difference. Result has 126 places, 210 transitions, 2333 flow [2024-06-28 00:15:02,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2190, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2333, PETRI_PLACES=126, PETRI_TRANSITIONS=210} [2024-06-28 00:15:02,313 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 83 predicate places. [2024-06-28 00:15:02,313 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 210 transitions, 2333 flow [2024-06-28 00:15:02,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:02,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:02,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:02,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:15:02,314 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:02,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:02,314 INFO L85 PathProgramCache]: Analyzing trace with hash 922023656, now seen corresponding path program 1 times [2024-06-28 00:15:02,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:02,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170704992] [2024-06-28 00:15:02,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:02,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:06,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:06,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170704992] [2024-06-28 00:15:06,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170704992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:06,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:06,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:15:06,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802113655] [2024-06-28 00:15:06,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:06,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:15:06,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:06,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:15:06,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:15:06,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:15:06,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 210 transitions, 2333 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:06,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:06,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:15:06,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:08,246 INFO L124 PetriNetUnfolderBase]: 1845/2834 cut-off events. [2024-06-28 00:15:08,246 INFO L125 PetriNetUnfolderBase]: For 35232/35246 co-relation queries the response was YES. [2024-06-28 00:15:08,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15905 conditions, 2834 events. 1845/2834 cut-off events. For 35232/35246 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 13934 event pairs, 484 based on Foata normal form. 16/2849 useless extension candidates. Maximal degree in co-relation 15850. Up to 2561 conditions per place. [2024-06-28 00:15:08,268 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 217 selfloop transitions, 67 changer transitions 0/288 dead transitions. [2024-06-28 00:15:08,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 288 transitions, 3443 flow [2024-06-28 00:15:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:15:08,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:15:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 00:15:08,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-28 00:15:08,270 INFO L175 Difference]: Start difference. First operand has 126 places, 210 transitions, 2333 flow. Second operand 10 states and 172 transitions. [2024-06-28 00:15:08,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 288 transitions, 3443 flow [2024-06-28 00:15:08,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 288 transitions, 3298 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 00:15:08,319 INFO L231 Difference]: Finished difference. Result has 136 places, 244 transitions, 2886 flow [2024-06-28 00:15:08,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2886, PETRI_PLACES=136, PETRI_TRANSITIONS=244} [2024-06-28 00:15:08,319 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-28 00:15:08,319 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 244 transitions, 2886 flow [2024-06-28 00:15:08,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:08,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:08,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:08,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:15:08,320 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:08,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:08,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1984832706, now seen corresponding path program 4 times [2024-06-28 00:15:08,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:08,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138903287] [2024-06-28 00:15:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:08,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:12,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:12,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:12,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138903287] [2024-06-28 00:15:12,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138903287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:12,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:12,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:12,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833038613] [2024-06-28 00:15:12,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:12,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:12,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:12,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:12,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:12,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:15:12,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 244 transitions, 2886 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:12,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:12,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:15:12,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:13,669 INFO L124 PetriNetUnfolderBase]: 2029/3132 cut-off events. [2024-06-28 00:15:13,669 INFO L125 PetriNetUnfolderBase]: For 43858/43876 co-relation queries the response was YES. [2024-06-28 00:15:13,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18274 conditions, 3132 events. 2029/3132 cut-off events. For 43858/43876 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15946 event pairs, 592 based on Foata normal form. 20/3149 useless extension candidates. Maximal degree in co-relation 18212. Up to 2683 conditions per place. [2024-06-28 00:15:13,692 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 207 selfloop transitions, 98 changer transitions 0/309 dead transitions. [2024-06-28 00:15:13,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 309 transitions, 3912 flow [2024-06-28 00:15:13,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:15:13,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:15:13,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 00:15:13,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2024-06-28 00:15:13,693 INFO L175 Difference]: Start difference. First operand has 136 places, 244 transitions, 2886 flow. Second operand 8 states and 158 transitions. [2024-06-28 00:15:13,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 309 transitions, 3912 flow [2024-06-28 00:15:13,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 309 transitions, 3824 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 00:15:13,765 INFO L231 Difference]: Finished difference. Result has 143 places, 263 transitions, 3266 flow [2024-06-28 00:15:13,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3266, PETRI_PLACES=143, PETRI_TRANSITIONS=263} [2024-06-28 00:15:13,766 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 100 predicate places. [2024-06-28 00:15:13,766 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 263 transitions, 3266 flow [2024-06-28 00:15:13,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:13,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:13,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:13,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:15:13,767 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:13,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:13,767 INFO L85 PathProgramCache]: Analyzing trace with hash -669705174, now seen corresponding path program 5 times [2024-06-28 00:15:13,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:13,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800615160] [2024-06-28 00:15:13,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:13,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:17,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:17,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800615160] [2024-06-28 00:15:17,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800615160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:17,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:17,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:17,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331733082] [2024-06-28 00:15:17,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:17,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:17,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:17,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:17,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:17,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:15:17,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 263 transitions, 3266 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:17,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:17,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:15:17,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:18,994 INFO L124 PetriNetUnfolderBase]: 2019/3122 cut-off events. [2024-06-28 00:15:18,994 INFO L125 PetriNetUnfolderBase]: For 48194/48212 co-relation queries the response was YES. [2024-06-28 00:15:19,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18940 conditions, 3122 events. 2019/3122 cut-off events. For 48194/48212 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 15824 event pairs, 652 based on Foata normal form. 20/3139 useless extension candidates. Maximal degree in co-relation 18876. Up to 2816 conditions per place. [2024-06-28 00:15:19,016 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 211 selfloop transitions, 85 changer transitions 0/300 dead transitions. [2024-06-28 00:15:19,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 300 transitions, 3997 flow [2024-06-28 00:15:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:15:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:15:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 00:15:19,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-28 00:15:19,018 INFO L175 Difference]: Start difference. First operand has 143 places, 263 transitions, 3266 flow. Second operand 7 states and 137 transitions. [2024-06-28 00:15:19,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 300 transitions, 3997 flow [2024-06-28 00:15:19,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 300 transitions, 3848 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 00:15:19,084 INFO L231 Difference]: Finished difference. Result has 146 places, 264 transitions, 3320 flow [2024-06-28 00:15:19,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3121, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3320, PETRI_PLACES=146, PETRI_TRANSITIONS=264} [2024-06-28 00:15:19,084 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 103 predicate places. [2024-06-28 00:15:19,085 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 264 transitions, 3320 flow [2024-06-28 00:15:19,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:19,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:19,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:19,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:15:19,085 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:19,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash 858479244, now seen corresponding path program 6 times [2024-06-28 00:15:19,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:19,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671357844] [2024-06-28 00:15:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:19,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:22,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:22,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:22,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671357844] [2024-06-28 00:15:22,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671357844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:22,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:22,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:15:22,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391710199] [2024-06-28 00:15:22,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:22,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:15:22,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:22,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:15:22,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:15:22,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:15:22,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 264 transitions, 3320 flow. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:22,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:22,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:15:22,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:24,082 INFO L124 PetriNetUnfolderBase]: 2091/3236 cut-off events. [2024-06-28 00:15:24,082 INFO L125 PetriNetUnfolderBase]: For 52606/52624 co-relation queries the response was YES. [2024-06-28 00:15:24,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19689 conditions, 3236 events. 2091/3236 cut-off events. For 52606/52624 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 16604 event pairs, 480 based on Foata normal form. 20/3253 useless extension candidates. Maximal degree in co-relation 19623. Up to 2735 conditions per place. [2024-06-28 00:15:24,105 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 232 selfloop transitions, 83 changer transitions 0/319 dead transitions. [2024-06-28 00:15:24,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 319 transitions, 4334 flow [2024-06-28 00:15:24,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:15:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:15:24,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 00:15:24,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46938775510204084 [2024-06-28 00:15:24,106 INFO L175 Difference]: Start difference. First operand has 146 places, 264 transitions, 3320 flow. Second operand 7 states and 138 transitions. [2024-06-28 00:15:24,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 319 transitions, 4334 flow [2024-06-28 00:15:24,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 319 transitions, 4146 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 00:15:24,183 INFO L231 Difference]: Finished difference. Result has 149 places, 278 transitions, 3527 flow [2024-06-28 00:15:24,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3132, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3527, PETRI_PLACES=149, PETRI_TRANSITIONS=278} [2024-06-28 00:15:24,183 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 106 predicate places. [2024-06-28 00:15:24,183 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 278 transitions, 3527 flow [2024-06-28 00:15:24,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:24,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:24,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:24,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:15:24,184 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:24,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:24,184 INFO L85 PathProgramCache]: Analyzing trace with hash 17578156, now seen corresponding path program 2 times [2024-06-28 00:15:24,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:24,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123978155] [2024-06-28 00:15:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:24,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:27,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:27,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123978155] [2024-06-28 00:15:27,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123978155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:27,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:27,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:27,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446662815] [2024-06-28 00:15:27,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:27,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:27,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:28,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:15:28,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 278 transitions, 3527 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:28,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:28,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:15:28,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:29,275 INFO L124 PetriNetUnfolderBase]: 2113/3278 cut-off events. [2024-06-28 00:15:29,275 INFO L125 PetriNetUnfolderBase]: For 56877/56895 co-relation queries the response was YES. [2024-06-28 00:15:29,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20474 conditions, 3278 events. 2113/3278 cut-off events. For 56877/56895 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16909 event pairs, 661 based on Foata normal form. 16/3291 useless extension candidates. Maximal degree in co-relation 20406. Up to 3023 conditions per place. [2024-06-28 00:15:29,300 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 259 selfloop transitions, 58 changer transitions 0/321 dead transitions. [2024-06-28 00:15:29,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 321 transitions, 4347 flow [2024-06-28 00:15:29,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:15:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:15:29,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 00:15:29,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2024-06-28 00:15:29,302 INFO L175 Difference]: Start difference. First operand has 149 places, 278 transitions, 3527 flow. Second operand 9 states and 152 transitions. [2024-06-28 00:15:29,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 321 transitions, 4347 flow [2024-06-28 00:15:29,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 321 transitions, 4222 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 00:15:29,399 INFO L231 Difference]: Finished difference. Result has 155 places, 284 transitions, 3607 flow [2024-06-28 00:15:29,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3607, PETRI_PLACES=155, PETRI_TRANSITIONS=284} [2024-06-28 00:15:29,399 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 112 predicate places. [2024-06-28 00:15:29,399 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 284 transitions, 3607 flow [2024-06-28 00:15:29,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:29,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:29,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:29,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:15:29,400 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:29,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:29,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1037494316, now seen corresponding path program 3 times [2024-06-28 00:15:29,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:29,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673796742] [2024-06-28 00:15:29,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:29,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:33,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:33,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673796742] [2024-06-28 00:15:33,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673796742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:33,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:33,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:15:33,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426341888] [2024-06-28 00:15:33,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:33,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:15:33,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:33,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:15:33,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:15:33,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:15:33,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 284 transitions, 3607 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:33,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:33,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:15:33,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:35,254 INFO L124 PetriNetUnfolderBase]: 2294/3563 cut-off events. [2024-06-28 00:15:35,254 INFO L125 PetriNetUnfolderBase]: For 65180/65201 co-relation queries the response was YES. [2024-06-28 00:15:35,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22716 conditions, 3563 events. 2294/3563 cut-off events. For 65180/65201 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 18853 event pairs, 736 based on Foata normal form. 22/3584 useless extension candidates. Maximal degree in co-relation 22646. Up to 3125 conditions per place. [2024-06-28 00:15:35,285 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 284 selfloop transitions, 110 changer transitions 0/398 dead transitions. [2024-06-28 00:15:35,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 398 transitions, 5508 flow [2024-06-28 00:15:35,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:15:35,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:15:35,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 00:15:35,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 00:15:35,287 INFO L175 Difference]: Start difference. First operand has 155 places, 284 transitions, 3607 flow. Second operand 10 states and 185 transitions. [2024-06-28 00:15:35,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 398 transitions, 5508 flow [2024-06-28 00:15:35,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 398 transitions, 5361 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 00:15:35,390 INFO L231 Difference]: Finished difference. Result has 163 places, 345 transitions, 4651 flow [2024-06-28 00:15:35,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3460, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4651, PETRI_PLACES=163, PETRI_TRANSITIONS=345} [2024-06-28 00:15:35,391 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 120 predicate places. [2024-06-28 00:15:35,391 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 345 transitions, 4651 flow [2024-06-28 00:15:35,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:35,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:35,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:35,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:15:35,392 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:35,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:35,392 INFO L85 PathProgramCache]: Analyzing trace with hash -769464640, now seen corresponding path program 4 times [2024-06-28 00:15:35,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:35,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694293668] [2024-06-28 00:15:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:35,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:38,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:38,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694293668] [2024-06-28 00:15:38,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694293668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:38,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:38,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:38,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537654630] [2024-06-28 00:15:38,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:38,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:38,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:38,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:38,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:38,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:15:38,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 345 transitions, 4651 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:38,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:38,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:15:38,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:40,260 INFO L124 PetriNetUnfolderBase]: 2320/3603 cut-off events. [2024-06-28 00:15:40,260 INFO L125 PetriNetUnfolderBase]: For 72519/72540 co-relation queries the response was YES. [2024-06-28 00:15:40,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24389 conditions, 3603 events. 2320/3603 cut-off events. For 72519/72540 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 18991 event pairs, 732 based on Foata normal form. 20/3620 useless extension candidates. Maximal degree in co-relation 24313. Up to 3308 conditions per place. [2024-06-28 00:15:40,290 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 324 selfloop transitions, 52 changer transitions 0/380 dead transitions. [2024-06-28 00:15:40,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 380 transitions, 5652 flow [2024-06-28 00:15:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:15:40,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:15:40,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:15:40,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-28 00:15:40,292 INFO L175 Difference]: Start difference. First operand has 163 places, 345 transitions, 4651 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:15:40,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 380 transitions, 5652 flow [2024-06-28 00:15:40,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 380 transitions, 5536 flow, removed 57 selfloop flow, removed 1 redundant places. [2024-06-28 00:15:40,405 INFO L231 Difference]: Finished difference. Result has 171 places, 351 transitions, 4794 flow [2024-06-28 00:15:40,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4543, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4794, PETRI_PLACES=171, PETRI_TRANSITIONS=351} [2024-06-28 00:15:40,405 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2024-06-28 00:15:40,405 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 351 transitions, 4794 flow [2024-06-28 00:15:40,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:40,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:40,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:40,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:15:40,406 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:40,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:40,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1037487806, now seen corresponding path program 5 times [2024-06-28 00:15:40,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:40,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759460877] [2024-06-28 00:15:40,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:40,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:44,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:44,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759460877] [2024-06-28 00:15:44,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759460877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:44,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:44,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:15:44,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892179685] [2024-06-28 00:15:44,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:44,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:15:44,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:44,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:15:44,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:15:44,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:15:44,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 351 transitions, 4794 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:44,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:44,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:15:44,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:45,943 INFO L124 PetriNetUnfolderBase]: 2354/3651 cut-off events. [2024-06-28 00:15:45,943 INFO L125 PetriNetUnfolderBase]: For 79277/79303 co-relation queries the response was YES. [2024-06-28 00:15:45,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25166 conditions, 3651 events. 2354/3651 cut-off events. For 79277/79303 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 19307 event pairs, 735 based on Foata normal form. 27/3677 useless extension candidates. Maximal degree in co-relation 25087. Up to 3223 conditions per place. [2024-06-28 00:15:45,976 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 291 selfloop transitions, 129 changer transitions 0/424 dead transitions. [2024-06-28 00:15:45,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 424 transitions, 6240 flow [2024-06-28 00:15:45,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:15:45,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:15:45,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 00:15:45,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 00:15:45,978 INFO L175 Difference]: Start difference. First operand has 171 places, 351 transitions, 4794 flow. Second operand 10 states and 183 transitions. [2024-06-28 00:15:45,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 424 transitions, 6240 flow [2024-06-28 00:15:46,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 424 transitions, 6038 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 00:15:46,102 INFO L231 Difference]: Finished difference. Result has 176 places, 374 transitions, 5293 flow [2024-06-28 00:15:46,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4598, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5293, PETRI_PLACES=176, PETRI_TRANSITIONS=374} [2024-06-28 00:15:46,103 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 133 predicate places. [2024-06-28 00:15:46,103 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 374 transitions, 5293 flow [2024-06-28 00:15:46,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:46,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:46,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:46,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:15:46,103 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:46,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:46,103 INFO L85 PathProgramCache]: Analyzing trace with hash 756965322, now seen corresponding path program 6 times [2024-06-28 00:15:46,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:46,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673753997] [2024-06-28 00:15:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:46,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:50,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:50,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673753997] [2024-06-28 00:15:50,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673753997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:50,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:50,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:50,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509157676] [2024-06-28 00:15:50,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:50,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:50,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:50,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:50,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:50,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:15:50,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 374 transitions, 5293 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:50,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:50,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:15:50,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:51,959 INFO L124 PetriNetUnfolderBase]: 2394/3694 cut-off events. [2024-06-28 00:15:51,959 INFO L125 PetriNetUnfolderBase]: For 83437/83448 co-relation queries the response was YES. [2024-06-28 00:15:51,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26235 conditions, 3694 events. 2394/3694 cut-off events. For 83437/83448 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 19249 event pairs, 497 based on Foata normal form. 6/3697 useless extension candidates. Maximal degree in co-relation 26153. Up to 3307 conditions per place. [2024-06-28 00:15:51,990 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 338 selfloop transitions, 96 changer transitions 0/438 dead transitions. [2024-06-28 00:15:51,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 438 transitions, 6501 flow [2024-06-28 00:15:51,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:15:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:15:51,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-28 00:15:51,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 00:15:51,992 INFO L175 Difference]: Start difference. First operand has 176 places, 374 transitions, 5293 flow. Second operand 12 states and 201 transitions. [2024-06-28 00:15:51,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 438 transitions, 6501 flow [2024-06-28 00:15:52,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 438 transitions, 6277 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 00:15:52,138 INFO L231 Difference]: Finished difference. Result has 185 places, 389 transitions, 5507 flow [2024-06-28 00:15:52,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5071, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5507, PETRI_PLACES=185, PETRI_TRANSITIONS=389} [2024-06-28 00:15:52,139 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 142 predicate places. [2024-06-28 00:15:52,139 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 389 transitions, 5507 flow [2024-06-28 00:15:52,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:52,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:52,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:52,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:15:52,140 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:52,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:52,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1072262888, now seen corresponding path program 7 times [2024-06-28 00:15:52,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:52,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220779044] [2024-06-28 00:15:52,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:52,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:15:56,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:56,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220779044] [2024-06-28 00:15:56,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220779044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:56,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:56,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:15:56,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865752073] [2024-06-28 00:15:56,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:56,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:15:56,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:56,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:15:56,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:15:56,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:15:56,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 389 transitions, 5507 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:56,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:56,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:15:56,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:58,086 INFO L124 PetriNetUnfolderBase]: 2579/4010 cut-off events. [2024-06-28 00:15:58,086 INFO L125 PetriNetUnfolderBase]: For 95678/95707 co-relation queries the response was YES. [2024-06-28 00:15:58,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28591 conditions, 4010 events. 2579/4010 cut-off events. For 95678/95707 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 21633 event pairs, 742 based on Foata normal form. 21/4029 useless extension candidates. Maximal degree in co-relation 28506. Up to 3597 conditions per place. [2024-06-28 00:15:58,123 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 389 selfloop transitions, 85 changer transitions 0/478 dead transitions. [2024-06-28 00:15:58,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 478 transitions, 7260 flow [2024-06-28 00:15:58,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:15:58,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:15:58,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 00:15:58,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-28 00:15:58,125 INFO L175 Difference]: Start difference. First operand has 185 places, 389 transitions, 5507 flow. Second operand 11 states and 180 transitions. [2024-06-28 00:15:58,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 478 transitions, 7260 flow [2024-06-28 00:15:58,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 478 transitions, 7087 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 00:15:58,285 INFO L231 Difference]: Finished difference. Result has 196 places, 436 transitions, 6222 flow [2024-06-28 00:15:58,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5339, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6222, PETRI_PLACES=196, PETRI_TRANSITIONS=436} [2024-06-28 00:15:58,286 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 153 predicate places. [2024-06-28 00:15:58,286 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 436 transitions, 6222 flow [2024-06-28 00:15:58,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:58,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:58,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:58,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:15:58,287 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:58,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1185739976, now seen corresponding path program 8 times [2024-06-28 00:15:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:58,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002482184] [2024-06-28 00:15:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:02,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:02,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002482184] [2024-06-28 00:16:02,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002482184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:02,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:02,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:16:02,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549784103] [2024-06-28 00:16:02,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:02,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:16:02,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:02,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:16:02,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:16:02,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:16:02,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 436 transitions, 6222 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:02,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:02,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:16:02,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:04,260 INFO L124 PetriNetUnfolderBase]: 2574/4003 cut-off events. [2024-06-28 00:16:04,261 INFO L125 PetriNetUnfolderBase]: For 103027/103056 co-relation queries the response was YES. [2024-06-28 00:16:04,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29233 conditions, 4003 events. 2574/4003 cut-off events. For 103027/103056 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 21531 event pairs, 748 based on Foata normal form. 21/4022 useless extension candidates. Maximal degree in co-relation 29142. Up to 3646 conditions per place. [2024-06-28 00:16:04,304 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 403 selfloop transitions, 69 changer transitions 0/476 dead transitions. [2024-06-28 00:16:04,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 476 transitions, 7317 flow [2024-06-28 00:16:04,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:16:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:16:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 00:16:04,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-06-28 00:16:04,307 INFO L175 Difference]: Start difference. First operand has 196 places, 436 transitions, 6222 flow. Second operand 11 states and 177 transitions. [2024-06-28 00:16:04,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 476 transitions, 7317 flow [2024-06-28 00:16:04,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 476 transitions, 7177 flow, removed 67 selfloop flow, removed 2 redundant places. [2024-06-28 00:16:04,616 INFO L231 Difference]: Finished difference. Result has 206 places, 438 transitions, 6271 flow [2024-06-28 00:16:04,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6082, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6271, PETRI_PLACES=206, PETRI_TRANSITIONS=438} [2024-06-28 00:16:04,617 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 163 predicate places. [2024-06-28 00:16:04,617 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 438 transitions, 6271 flow [2024-06-28 00:16:04,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:04,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:04,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:04,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:16:04,618 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:04,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:04,618 INFO L85 PathProgramCache]: Analyzing trace with hash 125856650, now seen corresponding path program 9 times [2024-06-28 00:16:04,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:04,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857709189] [2024-06-28 00:16:04,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:04,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:09,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:09,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857709189] [2024-06-28 00:16:09,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857709189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:09,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:09,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:16:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797736388] [2024-06-28 00:16:09,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:09,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:16:09,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:09,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:16:09,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:16:09,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:16:09,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 438 transitions, 6271 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:09,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:09,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:16:09,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:10,955 INFO L124 PetriNetUnfolderBase]: 2644/4120 cut-off events. [2024-06-28 00:16:10,955 INFO L125 PetriNetUnfolderBase]: For 111581/111638 co-relation queries the response was YES. [2024-06-28 00:16:10,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30333 conditions, 4120 events. 2644/4120 cut-off events. For 111581/111638 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 22409 event pairs, 745 based on Foata normal form. 50/4167 useless extension candidates. Maximal degree in co-relation 30239. Up to 3574 conditions per place. [2024-06-28 00:16:10,996 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 382 selfloop transitions, 105 changer transitions 0/491 dead transitions. [2024-06-28 00:16:10,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 491 transitions, 7750 flow [2024-06-28 00:16:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:16:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:16:10,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 00:16:10,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 00:16:10,998 INFO L175 Difference]: Start difference. First operand has 206 places, 438 transitions, 6271 flow. Second operand 10 states and 165 transitions. [2024-06-28 00:16:10,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 491 transitions, 7750 flow [2024-06-28 00:16:11,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 491 transitions, 7614 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 00:16:11,214 INFO L231 Difference]: Finished difference. Result has 210 places, 453 transitions, 6670 flow [2024-06-28 00:16:11,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6135, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6670, PETRI_PLACES=210, PETRI_TRANSITIONS=453} [2024-06-28 00:16:11,215 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 167 predicate places. [2024-06-28 00:16:11,215 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 453 transitions, 6670 flow [2024-06-28 00:16:11,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:11,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:11,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:11,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:16:11,215 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:11,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash -102044500, now seen corresponding path program 10 times [2024-06-28 00:16:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:11,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959754845] [2024-06-28 00:16:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:11,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:15,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:15,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959754845] [2024-06-28 00:16:15,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959754845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:15,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:15,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:15,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346939618] [2024-06-28 00:16:15,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:15,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:15,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:15,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:16:15,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 453 transitions, 6670 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:15,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:15,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:16:15,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:17,190 INFO L124 PetriNetUnfolderBase]: 2769/4316 cut-off events. [2024-06-28 00:16:17,190 INFO L125 PetriNetUnfolderBase]: For 122811/122832 co-relation queries the response was YES. [2024-06-28 00:16:17,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32958 conditions, 4316 events. 2769/4316 cut-off events. For 122811/122832 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 23646 event pairs, 735 based on Foata normal form. 18/4331 useless extension candidates. Maximal degree in co-relation 32861. Up to 3856 conditions per place. [2024-06-28 00:16:17,237 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 438 selfloop transitions, 94 changer transitions 0/536 dead transitions. [2024-06-28 00:16:17,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 536 transitions, 8707 flow [2024-06-28 00:16:17,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:16:17,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:16:17,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 00:16:17,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3961038961038961 [2024-06-28 00:16:17,240 INFO L175 Difference]: Start difference. First operand has 210 places, 453 transitions, 6670 flow. Second operand 11 states and 183 transitions. [2024-06-28 00:16:17,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 536 transitions, 8707 flow [2024-06-28 00:16:17,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 536 transitions, 8491 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-28 00:16:17,531 INFO L231 Difference]: Finished difference. Result has 219 places, 490 transitions, 7433 flow [2024-06-28 00:16:17,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6461, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7433, PETRI_PLACES=219, PETRI_TRANSITIONS=490} [2024-06-28 00:16:17,532 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 176 predicate places. [2024-06-28 00:16:17,532 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 490 transitions, 7433 flow [2024-06-28 00:16:17,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:17,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:17,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:17,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:16:17,533 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:17,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:17,533 INFO L85 PathProgramCache]: Analyzing trace with hash -9880880, now seen corresponding path program 11 times [2024-06-28 00:16:17,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:17,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883165959] [2024-06-28 00:16:17,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:17,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:21,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:21,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883165959] [2024-06-28 00:16:21,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883165959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:21,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:21,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:16:21,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78728532] [2024-06-28 00:16:21,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:21,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:16:21,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:21,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:16:21,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:16:21,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:16:21,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 490 transitions, 7433 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:21,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:21,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:16:21,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:23,460 INFO L124 PetriNetUnfolderBase]: 2764/4310 cut-off events. [2024-06-28 00:16:23,460 INFO L125 PetriNetUnfolderBase]: For 129665/129694 co-relation queries the response was YES. [2024-06-28 00:16:23,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33507 conditions, 4310 events. 2764/4310 cut-off events. For 129665/129694 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 23585 event pairs, 731 based on Foata normal form. 26/4334 useless extension candidates. Maximal degree in co-relation 33406. Up to 3782 conditions per place. [2024-06-28 00:16:23,504 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 417 selfloop transitions, 113 changer transitions 0/534 dead transitions. [2024-06-28 00:16:23,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 534 transitions, 8659 flow [2024-06-28 00:16:23,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:16:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:16:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 00:16:23,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3917748917748918 [2024-06-28 00:16:23,507 INFO L175 Difference]: Start difference. First operand has 219 places, 490 transitions, 7433 flow. Second operand 11 states and 181 transitions. [2024-06-28 00:16:23,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 534 transitions, 8659 flow [2024-06-28 00:16:23,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 534 transitions, 8443 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-28 00:16:23,803 INFO L231 Difference]: Finished difference. Result has 227 places, 491 transitions, 7508 flow [2024-06-28 00:16:23,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7217, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7508, PETRI_PLACES=227, PETRI_TRANSITIONS=491} [2024-06-28 00:16:23,804 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 184 predicate places. [2024-06-28 00:16:23,804 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 491 transitions, 7508 flow [2024-06-28 00:16:23,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:23,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:23,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:23,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:16:23,805 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:23,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:23,805 INFO L85 PathProgramCache]: Analyzing trace with hash 134130860, now seen corresponding path program 12 times [2024-06-28 00:16:23,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:23,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295749267] [2024-06-28 00:16:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:23,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:28,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:28,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295749267] [2024-06-28 00:16:28,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295749267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:28,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:28,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:16:28,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78390471] [2024-06-28 00:16:28,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:28,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:16:28,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:28,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:16:28,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:16:28,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:16:28,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 491 transitions, 7508 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:28,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:28,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:16:28,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:30,263 INFO L124 PetriNetUnfolderBase]: 2759/4306 cut-off events. [2024-06-28 00:16:30,263 INFO L125 PetriNetUnfolderBase]: For 134664/134721 co-relation queries the response was YES. [2024-06-28 00:16:30,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33802 conditions, 4306 events. 2759/4306 cut-off events. For 134664/134721 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 23668 event pairs, 745 based on Foata normal form. 50/4353 useless extension candidates. Maximal degree in co-relation 33697. Up to 3489 conditions per place. [2024-06-28 00:16:30,313 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 351 selfloop transitions, 183 changer transitions 0/538 dead transitions. [2024-06-28 00:16:30,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 538 transitions, 8998 flow [2024-06-28 00:16:30,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:16:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:16:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 00:16:30,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 00:16:30,315 INFO L175 Difference]: Start difference. First operand has 227 places, 491 transitions, 7508 flow. Second operand 10 states and 165 transitions. [2024-06-28 00:16:30,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 538 transitions, 8998 flow [2024-06-28 00:16:30,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 538 transitions, 8829 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:16:30,615 INFO L231 Difference]: Finished difference. Result has 232 places, 501 transitions, 7983 flow [2024-06-28 00:16:30,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7343, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7983, PETRI_PLACES=232, PETRI_TRANSITIONS=501} [2024-06-28 00:16:30,617 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 189 predicate places. [2024-06-28 00:16:30,617 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 501 transitions, 7983 flow [2024-06-28 00:16:30,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:30,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:30,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:30,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:16:30,618 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:30,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:30,618 INFO L85 PathProgramCache]: Analyzing trace with hash 125850140, now seen corresponding path program 13 times [2024-06-28 00:16:30,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:30,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372317712] [2024-06-28 00:16:30,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:30,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:34,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:34,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:34,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372317712] [2024-06-28 00:16:34,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372317712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:34,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:34,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:34,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168062476] [2024-06-28 00:16:34,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:34,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:34,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:34,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:34,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:34,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:16:34,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 501 transitions, 7983 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:34,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:34,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:16:34,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:36,591 INFO L124 PetriNetUnfolderBase]: 2754/4295 cut-off events. [2024-06-28 00:16:36,591 INFO L125 PetriNetUnfolderBase]: For 135325/135346 co-relation queries the response was YES. [2024-06-28 00:16:36,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34621 conditions, 4295 events. 2754/4295 cut-off events. For 135325/135346 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 23534 event pairs, 735 based on Foata normal form. 18/4310 useless extension candidates. Maximal degree in co-relation 34515. Up to 3770 conditions per place. [2024-06-28 00:16:36,637 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 430 selfloop transitions, 105 changer transitions 0/539 dead transitions. [2024-06-28 00:16:36,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 539 transitions, 9201 flow [2024-06-28 00:16:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:16:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:16:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 00:16:36,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37445887445887444 [2024-06-28 00:16:36,639 INFO L175 Difference]: Start difference. First operand has 232 places, 501 transitions, 7983 flow. Second operand 11 states and 173 transitions. [2024-06-28 00:16:36,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 539 transitions, 9201 flow [2024-06-28 00:16:36,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 539 transitions, 8751 flow, removed 88 selfloop flow, removed 6 redundant places. [2024-06-28 00:16:36,957 INFO L231 Difference]: Finished difference. Result has 237 places, 501 transitions, 7751 flow [2024-06-28 00:16:36,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7533, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7751, PETRI_PLACES=237, PETRI_TRANSITIONS=501} [2024-06-28 00:16:36,958 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 194 predicate places. [2024-06-28 00:16:36,958 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 501 transitions, 7751 flow [2024-06-28 00:16:36,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:36,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:36,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:36,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:16:36,958 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:36,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:36,959 INFO L85 PathProgramCache]: Analyzing trace with hash -514030280, now seen corresponding path program 1 times [2024-06-28 00:16:36,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:36,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109805726] [2024-06-28 00:16:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:36,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:40,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:40,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109805726] [2024-06-28 00:16:40,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109805726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:40,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:40,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:16:40,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52491776] [2024-06-28 00:16:40,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:40,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:16:40,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:40,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:16:40,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:16:40,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:16:40,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 501 transitions, 7751 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2024-06-28 00:16:40,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:40,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:16:40,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:42,293 INFO L124 PetriNetUnfolderBase]: 2748/4290 cut-off events. [2024-06-28 00:16:42,293 INFO L125 PetriNetUnfolderBase]: For 138624/138624 co-relation queries the response was YES. [2024-06-28 00:16:42,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34131 conditions, 4290 events. 2748/4290 cut-off events. For 138624/138624 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 23564 event pairs, 968 based on Foata normal form. 2/4291 useless extension candidates. Maximal degree in co-relation 34024. Up to 4086 conditions per place. [2024-06-28 00:16:42,347 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 499 selfloop transitions, 13 changer transitions 0/516 dead transitions. [2024-06-28 00:16:42,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 516 transitions, 8856 flow [2024-06-28 00:16:42,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:16:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:16:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-28 00:16:42,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 00:16:42,349 INFO L175 Difference]: Start difference. First operand has 237 places, 501 transitions, 7751 flow. Second operand 6 states and 93 transitions. [2024-06-28 00:16:42,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 516 transitions, 8856 flow [2024-06-28 00:16:42,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 516 transitions, 8605 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 00:16:42,670 INFO L231 Difference]: Finished difference. Result has 235 places, 505 transitions, 7593 flow [2024-06-28 00:16:42,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7500, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7593, PETRI_PLACES=235, PETRI_TRANSITIONS=505} [2024-06-28 00:16:42,671 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 192 predicate places. [2024-06-28 00:16:42,671 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 505 transitions, 7593 flow [2024-06-28 00:16:42,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2024-06-28 00:16:42,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:42,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:42,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:16:42,672 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:42,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:42,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1338119485, now seen corresponding path program 1 times [2024-06-28 00:16:42,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:42,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051573091] [2024-06-28 00:16:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:42,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:46,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:46,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051573091] [2024-06-28 00:16:46,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051573091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:46,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:46,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:46,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442006533] [2024-06-28 00:16:46,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:46,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:46,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:46,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:46,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:46,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:16:46,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 505 transitions, 7593 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:46,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:46,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:16:46,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:47,935 INFO L124 PetriNetUnfolderBase]: 2768/4309 cut-off events. [2024-06-28 00:16:47,935 INFO L125 PetriNetUnfolderBase]: For 143309/143330 co-relation queries the response was YES. [2024-06-28 00:16:47,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34268 conditions, 4309 events. 2768/4309 cut-off events. For 143309/143330 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 23487 event pairs, 591 based on Foata normal form. 20/4326 useless extension candidates. Maximal degree in co-relation 34159. Up to 3813 conditions per place. [2024-06-28 00:16:47,976 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 493 selfloop transitions, 62 changer transitions 0/559 dead transitions. [2024-06-28 00:16:47,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 559 transitions, 8970 flow [2024-06-28 00:16:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:16:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:16:47,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 00:16:47,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 00:16:47,978 INFO L175 Difference]: Start difference. First operand has 235 places, 505 transitions, 7593 flow. Second operand 10 states and 170 transitions. [2024-06-28 00:16:47,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 559 transitions, 8970 flow [2024-06-28 00:16:48,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 559 transitions, 8930 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 00:16:48,260 INFO L231 Difference]: Finished difference. Result has 245 places, 511 transitions, 7820 flow [2024-06-28 00:16:48,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7553, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7820, PETRI_PLACES=245, PETRI_TRANSITIONS=511} [2024-06-28 00:16:48,260 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 202 predicate places. [2024-06-28 00:16:48,261 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 511 transitions, 7820 flow [2024-06-28 00:16:48,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:48,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:48,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:48,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:16:48,261 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:48,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:48,262 INFO L85 PathProgramCache]: Analyzing trace with hash 564197549, now seen corresponding path program 2 times [2024-06-28 00:16:48,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:48,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015822627] [2024-06-28 00:16:48,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:48,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:51,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:51,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015822627] [2024-06-28 00:16:51,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015822627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:51,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:51,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:51,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321093667] [2024-06-28 00:16:51,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:51,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:51,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:51,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:51,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:16:51,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 511 transitions, 7820 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:51,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:51,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:16:51,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:53,400 INFO L124 PetriNetUnfolderBase]: 2788/4343 cut-off events. [2024-06-28 00:16:53,400 INFO L125 PetriNetUnfolderBase]: For 148892/148913 co-relation queries the response was YES. [2024-06-28 00:16:53,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35189 conditions, 4343 events. 2788/4343 cut-off events. For 148892/148913 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 23724 event pairs, 670 based on Foata normal form. 20/4360 useless extension candidates. Maximal degree in co-relation 35076. Up to 3975 conditions per place. [2024-06-28 00:16:53,448 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 497 selfloop transitions, 51 changer transitions 0/552 dead transitions. [2024-06-28 00:16:53,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 552 transitions, 9116 flow [2024-06-28 00:16:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:16:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:16:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 00:16:53,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2024-06-28 00:16:53,450 INFO L175 Difference]: Start difference. First operand has 245 places, 511 transitions, 7820 flow. Second operand 9 states and 152 transitions. [2024-06-28 00:16:53,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 552 transitions, 9116 flow [2024-06-28 00:16:53,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 552 transitions, 8977 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 00:16:53,795 INFO L231 Difference]: Finished difference. Result has 249 places, 513 transitions, 7859 flow [2024-06-28 00:16:53,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7681, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7859, PETRI_PLACES=249, PETRI_TRANSITIONS=513} [2024-06-28 00:16:53,796 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 206 predicate places. [2024-06-28 00:16:53,796 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 513 transitions, 7859 flow [2024-06-28 00:16:53,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:53,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:53,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:53,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:16:53,797 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:53,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:53,798 INFO L85 PathProgramCache]: Analyzing trace with hash 568155629, now seen corresponding path program 3 times [2024-06-28 00:16:53,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:53,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630397664] [2024-06-28 00:16:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:53,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:16:57,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:57,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630397664] [2024-06-28 00:16:57,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630397664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:57,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:57,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:57,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750627668] [2024-06-28 00:16:57,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:57,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:57,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:57,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:57,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:57,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:16:57,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 513 transitions, 7859 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:16:57,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:57,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:16:57,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:59,769 INFO L124 PetriNetUnfolderBase]: 2831/4413 cut-off events. [2024-06-28 00:16:59,769 INFO L125 PetriNetUnfolderBase]: For 160081/160102 co-relation queries the response was YES. [2024-06-28 00:16:59,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35916 conditions, 4413 events. 2831/4413 cut-off events. For 160081/160102 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 24257 event pairs, 689 based on Foata normal form. 23/4433 useless extension candidates. Maximal degree in co-relation 35802. Up to 3970 conditions per place. [2024-06-28 00:16:59,818 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 435 selfloop transitions, 124 changer transitions 0/563 dead transitions. [2024-06-28 00:16:59,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 563 transitions, 9315 flow [2024-06-28 00:16:59,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:16:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:16:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 00:16:59,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-28 00:16:59,819 INFO L175 Difference]: Start difference. First operand has 249 places, 513 transitions, 7859 flow. Second operand 10 states and 172 transitions. [2024-06-28 00:16:59,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 563 transitions, 9315 flow [2024-06-28 00:17:00,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 563 transitions, 9164 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:00,146 INFO L231 Difference]: Finished difference. Result has 255 places, 523 transitions, 8225 flow [2024-06-28 00:17:00,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7708, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8225, PETRI_PLACES=255, PETRI_TRANSITIONS=523} [2024-06-28 00:17:00,147 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 212 predicate places. [2024-06-28 00:17:00,147 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 523 transitions, 8225 flow [2024-06-28 00:17:00,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:00,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:00,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:00,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:17:00,148 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:00,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:00,148 INFO L85 PathProgramCache]: Analyzing trace with hash 843054491, now seen corresponding path program 4 times [2024-06-28 00:17:00,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:00,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299687460] [2024-06-28 00:17:00,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:00,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:03,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:03,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299687460] [2024-06-28 00:17:03,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299687460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:03,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:03,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892913598] [2024-06-28 00:17:03,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:03,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:03,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:17:03,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 523 transitions, 8225 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:03,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:03,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:17:03,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:04,980 INFO L124 PetriNetUnfolderBase]: 2935/4581 cut-off events. [2024-06-28 00:17:04,980 INFO L125 PetriNetUnfolderBase]: For 177460/177517 co-relation queries the response was YES. [2024-06-28 00:17:05,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37546 conditions, 4581 events. 2935/4581 cut-off events. For 177460/177517 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 25376 event pairs, 422 based on Foata normal form. 52/4630 useless extension candidates. Maximal degree in co-relation 37429. Up to 3641 conditions per place. [2024-06-28 00:17:05,037 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 458 selfloop transitions, 123 changer transitions 0/585 dead transitions. [2024-06-28 00:17:05,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 585 transitions, 9771 flow [2024-06-28 00:17:05,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:17:05,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:17:05,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 00:17:05,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-28 00:17:05,039 INFO L175 Difference]: Start difference. First operand has 255 places, 523 transitions, 8225 flow. Second operand 8 states and 149 transitions. [2024-06-28 00:17:05,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 585 transitions, 9771 flow [2024-06-28 00:17:05,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 585 transitions, 9518 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-06-28 00:17:05,437 INFO L231 Difference]: Finished difference. Result has 261 places, 544 transitions, 8539 flow [2024-06-28 00:17:05,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7972, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8539, PETRI_PLACES=261, PETRI_TRANSITIONS=544} [2024-06-28 00:17:05,438 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 218 predicate places. [2024-06-28 00:17:05,438 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 544 transitions, 8539 flow [2024-06-28 00:17:05,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:05,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:05,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:05,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:17:05,439 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:05,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:05,439 INFO L85 PathProgramCache]: Analyzing trace with hash 544924601, now seen corresponding path program 1 times [2024-06-28 00:17:05,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:05,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881639769] [2024-06-28 00:17:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:05,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:10,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:10,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881639769] [2024-06-28 00:17:10,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881639769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:10,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:10,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:17:10,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868874648] [2024-06-28 00:17:10,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:10,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:17:10,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:10,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:17:10,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:17:10,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:17:10,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 544 transitions, 8539 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:10,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:10,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:17:10,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:12,026 INFO L124 PetriNetUnfolderBase]: 3003/4706 cut-off events. [2024-06-28 00:17:12,026 INFO L125 PetriNetUnfolderBase]: For 197657/197678 co-relation queries the response was YES. [2024-06-28 00:17:12,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39375 conditions, 4706 events. 3003/4706 cut-off events. For 197657/197678 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 26454 event pairs, 720 based on Foata normal form. 32/4735 useless extension candidates. Maximal degree in co-relation 39255. Up to 4219 conditions per place. [2024-06-28 00:17:12,085 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 523 selfloop transitions, 64 changer transitions 0/591 dead transitions. [2024-06-28 00:17:12,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 591 transitions, 9993 flow [2024-06-28 00:17:12,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:12,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 00:17:12,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2024-06-28 00:17:12,087 INFO L175 Difference]: Start difference. First operand has 261 places, 544 transitions, 8539 flow. Second operand 10 states and 169 transitions. [2024-06-28 00:17:12,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 591 transitions, 9993 flow [2024-06-28 00:17:12,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 591 transitions, 9820 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-06-28 00:17:12,523 INFO L231 Difference]: Finished difference. Result has 269 places, 545 transitions, 8561 flow [2024-06-28 00:17:12,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8366, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8561, PETRI_PLACES=269, PETRI_TRANSITIONS=545} [2024-06-28 00:17:12,524 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-28 00:17:12,524 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 545 transitions, 8561 flow [2024-06-28 00:17:12,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:12,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:12,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:12,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:17:12,525 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:12,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:12,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1570755553, now seen corresponding path program 5 times [2024-06-28 00:17:12,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:12,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159265690] [2024-06-28 00:17:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:12,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:15,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:15,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159265690] [2024-06-28 00:17:15,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159265690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:15,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:15,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:15,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551693312] [2024-06-28 00:17:15,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:15,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:15,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:15,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:15,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:15,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:17:15,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 545 transitions, 8561 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:15,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:15,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:17:15,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:18,020 INFO L124 PetriNetUnfolderBase]: 3051/4768 cut-off events. [2024-06-28 00:17:18,021 INFO L125 PetriNetUnfolderBase]: For 193372/193393 co-relation queries the response was YES. [2024-06-28 00:17:18,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39971 conditions, 4768 events. 3051/4768 cut-off events. For 193372/193393 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 26617 event pairs, 506 based on Foata normal form. 20/4784 useless extension candidates. Maximal degree in co-relation 39848. Up to 4001 conditions per place. [2024-06-28 00:17:18,070 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 472 selfloop transitions, 120 changer transitions 0/596 dead transitions. [2024-06-28 00:17:18,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 596 transitions, 10015 flow [2024-06-28 00:17:18,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:18,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 00:17:18,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-28 00:17:18,072 INFO L175 Difference]: Start difference. First operand has 269 places, 545 transitions, 8561 flow. Second operand 10 states and 172 transitions. [2024-06-28 00:17:18,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 596 transitions, 10015 flow [2024-06-28 00:17:18,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 596 transitions, 9889 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:17:18,440 INFO L231 Difference]: Finished difference. Result has 272 places, 551 transitions, 8805 flow [2024-06-28 00:17:18,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8435, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8805, PETRI_PLACES=272, PETRI_TRANSITIONS=551} [2024-06-28 00:17:18,441 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 229 predicate places. [2024-06-28 00:17:18,441 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 551 transitions, 8805 flow [2024-06-28 00:17:18,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:18,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:18,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:18,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:17:18,441 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:18,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:18,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1482041923, now seen corresponding path program 6 times [2024-06-28 00:17:18,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:18,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144621812] [2024-06-28 00:17:18,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:18,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:21,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:21,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144621812] [2024-06-28 00:17:21,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144621812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:21,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:21,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:21,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111501943] [2024-06-28 00:17:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:21,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:21,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:21,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:21,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:17:21,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 551 transitions, 8805 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:21,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:21,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:17:21,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:24,022 INFO L124 PetriNetUnfolderBase]: 3085/4822 cut-off events. [2024-06-28 00:17:24,022 INFO L125 PetriNetUnfolderBase]: For 202471/202492 co-relation queries the response was YES. [2024-06-28 00:17:24,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40913 conditions, 4822 events. 3085/4822 cut-off events. For 202471/202492 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 27042 event pairs, 560 based on Foata normal form. 20/4838 useless extension candidates. Maximal degree in co-relation 40789. Up to 4294 conditions per place. [2024-06-28 00:17:24,076 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 482 selfloop transitions, 109 changer transitions 0/595 dead transitions. [2024-06-28 00:17:24,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 595 transitions, 10237 flow [2024-06-28 00:17:24,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:24,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 00:17:24,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2024-06-28 00:17:24,078 INFO L175 Difference]: Start difference. First operand has 272 places, 551 transitions, 8805 flow. Second operand 10 states and 169 transitions. [2024-06-28 00:17:24,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 595 transitions, 10237 flow [2024-06-28 00:17:24,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 595 transitions, 10048 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 00:17:24,641 INFO L231 Difference]: Finished difference. Result has 279 places, 555 transitions, 8947 flow [2024-06-28 00:17:24,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8616, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8947, PETRI_PLACES=279, PETRI_TRANSITIONS=555} [2024-06-28 00:17:24,641 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-06-28 00:17:24,641 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 555 transitions, 8947 flow [2024-06-28 00:17:24,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:24,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:24,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:24,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:17:24,642 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:24,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1482189793, now seen corresponding path program 7 times [2024-06-28 00:17:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911068885] [2024-06-28 00:17:24,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:24,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:27,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:27,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911068885] [2024-06-28 00:17:27,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911068885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:27,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:27,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:27,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517197176] [2024-06-28 00:17:27,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:27,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:27,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:27,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:27,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:28,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:17:28,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 555 transitions, 8947 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:28,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:28,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:17:28,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:29,953 INFO L124 PetriNetUnfolderBase]: 3119/4876 cut-off events. [2024-06-28 00:17:29,953 INFO L125 PetriNetUnfolderBase]: For 213247/213268 co-relation queries the response was YES. [2024-06-28 00:17:29,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41547 conditions, 4876 events. 3119/4876 cut-off events. For 213247/213268 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 27450 event pairs, 557 based on Foata normal form. 20/4892 useless extension candidates. Maximal degree in co-relation 41421. Up to 4327 conditions per place. [2024-06-28 00:17:30,012 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 496 selfloop transitions, 100 changer transitions 0/600 dead transitions. [2024-06-28 00:17:30,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 600 transitions, 10388 flow [2024-06-28 00:17:30,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:17:30,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:17:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 00:17:30,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2024-06-28 00:17:30,015 INFO L175 Difference]: Start difference. First operand has 279 places, 555 transitions, 8947 flow. Second operand 10 states and 169 transitions. [2024-06-28 00:17:30,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 600 transitions, 10388 flow [2024-06-28 00:17:30,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 600 transitions, 10105 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 00:17:30,617 INFO L231 Difference]: Finished difference. Result has 281 places, 559 transitions, 8977 flow [2024-06-28 00:17:30,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8664, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8977, PETRI_PLACES=281, PETRI_TRANSITIONS=559} [2024-06-28 00:17:30,618 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 238 predicate places. [2024-06-28 00:17:30,618 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 559 transitions, 8977 flow [2024-06-28 00:17:30,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:30,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:30,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:30,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:17:30,619 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:30,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:30,619 INFO L85 PathProgramCache]: Analyzing trace with hash 2097346727, now seen corresponding path program 8 times [2024-06-28 00:17:30,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:30,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358500168] [2024-06-28 00:17:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:30,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:33,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:33,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358500168] [2024-06-28 00:17:33,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358500168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:33,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:33,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:33,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826094670] [2024-06-28 00:17:33,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:33,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:33,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:33,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:33,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:33,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:17:33,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 559 transitions, 8977 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:33,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:33,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:17:33,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:35,930 INFO L124 PetriNetUnfolderBase]: 3139/4927 cut-off events. [2024-06-28 00:17:35,930 INFO L125 PetriNetUnfolderBase]: For 225676/225697 co-relation queries the response was YES. [2024-06-28 00:17:35,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42040 conditions, 4927 events. 3139/4927 cut-off events. For 225676/225697 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 28079 event pairs, 857 based on Foata normal form. 20/4944 useless extension candidates. Maximal degree in co-relation 41913. Up to 4351 conditions per place. [2024-06-28 00:17:35,983 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 484 selfloop transitions, 107 changer transitions 0/595 dead transitions. [2024-06-28 00:17:35,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 595 transitions, 10391 flow [2024-06-28 00:17:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 00:17:35,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995 [2024-06-28 00:17:35,986 INFO L175 Difference]: Start difference. First operand has 281 places, 559 transitions, 8977 flow. Second operand 9 states and 151 transitions. [2024-06-28 00:17:35,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 595 transitions, 10391 flow [2024-06-28 00:17:36,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 595 transitions, 10113 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 00:17:36,479 INFO L231 Difference]: Finished difference. Result has 282 places, 561 transitions, 9019 flow [2024-06-28 00:17:36,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8699, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9019, PETRI_PLACES=282, PETRI_TRANSITIONS=561} [2024-06-28 00:17:36,480 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 239 predicate places. [2024-06-28 00:17:36,480 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 561 transitions, 9019 flow [2024-06-28 00:17:36,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:36,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:36,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:36,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:17:36,481 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:36,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:36,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2091984347, now seen corresponding path program 9 times [2024-06-28 00:17:36,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:36,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260848791] [2024-06-28 00:17:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:36,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:39,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:39,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:39,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260848791] [2024-06-28 00:17:39,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260848791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:39,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:39,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:39,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057354930] [2024-06-28 00:17:39,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:39,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:39,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:39,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:39,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:39,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:17:39,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 561 transitions, 9019 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:39,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:39,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:17:39,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:41,771 INFO L124 PetriNetUnfolderBase]: 3159/4959 cut-off events. [2024-06-28 00:17:41,771 INFO L125 PetriNetUnfolderBase]: For 233494/233515 co-relation queries the response was YES. [2024-06-28 00:17:41,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42531 conditions, 4959 events. 3159/4959 cut-off events. For 233494/233515 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 28271 event pairs, 863 based on Foata normal form. 20/4976 useless extension candidates. Maximal degree in co-relation 42403. Up to 4520 conditions per place. [2024-06-28 00:17:41,824 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 518 selfloop transitions, 70 changer transitions 0/592 dead transitions. [2024-06-28 00:17:41,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 592 transitions, 10409 flow [2024-06-28 00:17:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:41,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:17:41,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-28 00:17:41,826 INFO L175 Difference]: Start difference. First operand has 282 places, 561 transitions, 9019 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:17:41,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 592 transitions, 10409 flow [2024-06-28 00:17:42,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 592 transitions, 10130 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:42,315 INFO L231 Difference]: Finished difference. Result has 285 places, 563 transitions, 8989 flow [2024-06-28 00:17:42,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8740, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8989, PETRI_PLACES=285, PETRI_TRANSITIONS=563} [2024-06-28 00:17:42,316 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 242 predicate places. [2024-06-28 00:17:42,316 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 563 transitions, 8989 flow [2024-06-28 00:17:42,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:42,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:42,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:42,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:17:42,316 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:42,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:42,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1144359693, now seen corresponding path program 10 times [2024-06-28 00:17:42,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:42,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686878886] [2024-06-28 00:17:42,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:42,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:45,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:45,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686878886] [2024-06-28 00:17:45,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686878886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:45,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:45,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:17:45,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402222974] [2024-06-28 00:17:45,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:45,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:17:45,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:45,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:17:45,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:17:45,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:17:45,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 563 transitions, 8989 flow. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:45,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:45,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:17:45,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:47,242 INFO L124 PetriNetUnfolderBase]: 3151/4947 cut-off events. [2024-06-28 00:17:47,242 INFO L125 PetriNetUnfolderBase]: For 236675/236696 co-relation queries the response was YES. [2024-06-28 00:17:47,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42129 conditions, 4947 events. 3151/4947 cut-off events. For 236675/236696 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 28260 event pairs, 855 based on Foata normal form. 20/4964 useless extension candidates. Maximal degree in co-relation 42000. Up to 4509 conditions per place. [2024-06-28 00:17:47,305 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 532 selfloop transitions, 59 changer transitions 0/595 dead transitions. [2024-06-28 00:17:47,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 595 transitions, 10386 flow [2024-06-28 00:17:47,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:17:47,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:17:47,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:17:47,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-28 00:17:47,307 INFO L175 Difference]: Start difference. First operand has 285 places, 563 transitions, 8989 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:17:47,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 595 transitions, 10386 flow [2024-06-28 00:17:48,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 595 transitions, 10184 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:48,112 INFO L231 Difference]: Finished difference. Result has 288 places, 565 transitions, 9015 flow [2024-06-28 00:17:48,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8787, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9015, PETRI_PLACES=288, PETRI_TRANSITIONS=565} [2024-06-28 00:17:48,113 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 245 predicate places. [2024-06-28 00:17:48,113 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 565 transitions, 9015 flow [2024-06-28 00:17:48,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:17:48,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:48,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:48,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:17:48,114 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:48,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:48,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1482035971, now seen corresponding path program 2 times [2024-06-28 00:17:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:48,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341817850] [2024-06-28 00:17:48,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:48,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:48,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:17:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:17:52,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:17:52,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341817850] [2024-06-28 00:17:52,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341817850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:17:52,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:17:52,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:17:52,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23940650] [2024-06-28 00:17:52,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:17:52,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:17:52,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:17:52,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:17:52,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:17:53,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:17:53,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 565 transitions, 9015 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:17:53,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:17:53,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:17:53,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:17:55,506 INFO L124 PetriNetUnfolderBase]: 3267/5129 cut-off events. [2024-06-28 00:17:55,506 INFO L125 PetriNetUnfolderBase]: For 264363/264386 co-relation queries the response was YES. [2024-06-28 00:17:55,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43921 conditions, 5129 events. 3267/5129 cut-off events. For 264363/264386 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 29492 event pairs, 664 based on Foata normal form. 38/5166 useless extension candidates. Maximal degree in co-relation 43791. Up to 4533 conditions per place. [2024-06-28 00:17:55,569 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 536 selfloop transitions, 80 changer transitions 0/620 dead transitions. [2024-06-28 00:17:55,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 620 transitions, 10603 flow [2024-06-28 00:17:55,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:17:55,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:17:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 00:17:55,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 00:17:55,571 INFO L175 Difference]: Start difference. First operand has 288 places, 565 transitions, 9015 flow. Second operand 11 states and 189 transitions. [2024-06-28 00:17:55,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 620 transitions, 10603 flow [2024-06-28 00:17:56,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 620 transitions, 10405 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 00:17:56,155 INFO L231 Difference]: Finished difference. Result has 293 places, 567 transitions, 9095 flow [2024-06-28 00:17:56,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8817, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9095, PETRI_PLACES=293, PETRI_TRANSITIONS=567} [2024-06-28 00:17:56,156 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-28 00:17:56,156 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 567 transitions, 9095 flow [2024-06-28 00:17:56,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:17:56,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:17:56,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:17:56,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:17:56,157 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:17:56,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:17:56,157 INFO L85 PathProgramCache]: Analyzing trace with hash -44853797, now seen corresponding path program 3 times [2024-06-28 00:17:56,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:17:56,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872462374] [2024-06-28 00:17:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:17:56,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:17:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:00,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:00,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872462374] [2024-06-28 00:18:00,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872462374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:00,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:00,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:00,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726782807] [2024-06-28 00:18:00,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:00,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:00,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:00,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:00,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:00,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:18:00,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 567 transitions, 9095 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:00,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:00,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:18:00,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:02,378 INFO L124 PetriNetUnfolderBase]: 3335/5259 cut-off events. [2024-06-28 00:18:02,378 INFO L125 PetriNetUnfolderBase]: For 283485/283506 co-relation queries the response was YES. [2024-06-28 00:18:02,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45150 conditions, 5259 events. 3335/5259 cut-off events. For 283485/283506 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 30741 event pairs, 917 based on Foata normal form. 32/5288 useless extension candidates. Maximal degree in co-relation 45019. Up to 4663 conditions per place. [2024-06-28 00:18:02,442 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 517 selfloop transitions, 84 changer transitions 0/605 dead transitions. [2024-06-28 00:18:02,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 605 transitions, 10569 flow [2024-06-28 00:18:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:18:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:18:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 00:18:02,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-28 00:18:02,444 INFO L175 Difference]: Start difference. First operand has 293 places, 567 transitions, 9095 flow. Second operand 10 states and 158 transitions. [2024-06-28 00:18:02,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 605 transitions, 10569 flow [2024-06-28 00:18:03,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 605 transitions, 10419 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:03,043 INFO L231 Difference]: Finished difference. Result has 296 places, 568 transitions, 9200 flow [2024-06-28 00:18:03,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8945, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9200, PETRI_PLACES=296, PETRI_TRANSITIONS=568} [2024-06-28 00:18:03,044 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 253 predicate places. [2024-06-28 00:18:03,044 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 568 transitions, 9200 flow [2024-06-28 00:18:03,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:03,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:03,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:03,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:18:03,045 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:03,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:03,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2097352679, now seen corresponding path program 4 times [2024-06-28 00:18:03,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:03,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517736817] [2024-06-28 00:18:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:03,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:07,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:07,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:07,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517736817] [2024-06-28 00:18:07,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517736817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:07,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:07,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:18:07,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100004328] [2024-06-28 00:18:07,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:07,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:18:07,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:07,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:18:07,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:18:07,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:18:07,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 568 transitions, 9200 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:18:07,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:07,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:18:07,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:10,230 INFO L124 PetriNetUnfolderBase]: 3403/5388 cut-off events. [2024-06-28 00:18:10,230 INFO L125 PetriNetUnfolderBase]: For 300296/300322 co-relation queries the response was YES. [2024-06-28 00:18:10,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46342 conditions, 5388 events. 3403/5388 cut-off events. For 300296/300322 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 31967 event pairs, 934 based on Foata normal form. 40/5427 useless extension candidates. Maximal degree in co-relation 46210. Up to 4790 conditions per place. [2024-06-28 00:18:10,292 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 525 selfloop transitions, 94 changer transitions 0/623 dead transitions. [2024-06-28 00:18:10,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 623 transitions, 10788 flow [2024-06-28 00:18:10,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:18:10,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:18:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 00:18:10,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2024-06-28 00:18:10,294 INFO L175 Difference]: Start difference. First operand has 296 places, 568 transitions, 9200 flow. Second operand 11 states and 190 transitions. [2024-06-28 00:18:10,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 623 transitions, 10788 flow [2024-06-28 00:18:10,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 623 transitions, 10591 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 00:18:10,959 INFO L231 Difference]: Finished difference. Result has 299 places, 570 transitions, 9300 flow [2024-06-28 00:18:10,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9005, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9300, PETRI_PLACES=299, PETRI_TRANSITIONS=570} [2024-06-28 00:18:10,960 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 256 predicate places. [2024-06-28 00:18:10,960 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 570 transitions, 9300 flow [2024-06-28 00:18:10,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:18:10,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:10,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:10,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:18:10,961 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:10,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:10,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1921973331, now seen corresponding path program 5 times [2024-06-28 00:18:10,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:10,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222897690] [2024-06-28 00:18:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:10,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222897690] [2024-06-28 00:18:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222897690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:15,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:15,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:18:15,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058686669] [2024-06-28 00:18:15,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:15,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:18:15,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:18:15,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:18:15,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:18:15,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 570 transitions, 9300 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:18:15,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:15,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:18:15,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:18,184 INFO L124 PetriNetUnfolderBase]: 3635/5780 cut-off events. [2024-06-28 00:18:18,184 INFO L125 PetriNetUnfolderBase]: For 334739/334761 co-relation queries the response was YES. [2024-06-28 00:18:18,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50531 conditions, 5780 events. 3635/5780 cut-off events. For 334739/334761 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 35049 event pairs, 966 based on Foata normal form. 33/5812 useless extension candidates. Maximal degree in co-relation 50398. Up to 4701 conditions per place. [2024-06-28 00:18:18,257 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 508 selfloop transitions, 121 changer transitions 0/633 dead transitions. [2024-06-28 00:18:18,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 633 transitions, 11230 flow [2024-06-28 00:18:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:18:18,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:18:18,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-28 00:18:18,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-06-28 00:18:18,259 INFO L175 Difference]: Start difference. First operand has 299 places, 570 transitions, 9300 flow. Second operand 11 states and 195 transitions. [2024-06-28 00:18:18,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 633 transitions, 11230 flow [2024-06-28 00:18:18,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 633 transitions, 11094 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 00:18:18,913 INFO L231 Difference]: Finished difference. Result has 308 places, 575 transitions, 9638 flow [2024-06-28 00:18:18,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9164, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9638, PETRI_PLACES=308, PETRI_TRANSITIONS=575} [2024-06-28 00:18:18,914 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 265 predicate places. [2024-06-28 00:18:18,914 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 575 transitions, 9638 flow [2024-06-28 00:18:18,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:18:18,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:18,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:18,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:18:18,915 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:18,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:18,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1921965891, now seen corresponding path program 6 times [2024-06-28 00:18:18,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:18,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512649050] [2024-06-28 00:18:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:18,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:23,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:23,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512649050] [2024-06-28 00:18:23,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512649050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:23,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:23,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:23,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800717309] [2024-06-28 00:18:23,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:23,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:23,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:23,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:23,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:23,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:18:23,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 575 transitions, 9638 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:23,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:23,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:18:23,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:26,090 INFO L124 PetriNetUnfolderBase]: 3675/5851 cut-off events. [2024-06-28 00:18:26,090 INFO L125 PetriNetUnfolderBase]: For 353961/353982 co-relation queries the response was YES. [2024-06-28 00:18:26,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50735 conditions, 5851 events. 3675/5851 cut-off events. For 353961/353982 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 35576 event pairs, 983 based on Foata normal form. 48/5896 useless extension candidates. Maximal degree in co-relation 50599. Up to 4781 conditions per place. [2024-06-28 00:18:26,155 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 434 selfloop transitions, 180 changer transitions 0/618 dead transitions. [2024-06-28 00:18:26,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 618 transitions, 11166 flow [2024-06-28 00:18:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:18:26,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:18:26,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 00:18:26,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38311688311688313 [2024-06-28 00:18:26,157 INFO L175 Difference]: Start difference. First operand has 308 places, 575 transitions, 9638 flow. Second operand 11 states and 177 transitions. [2024-06-28 00:18:26,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 618 transitions, 11166 flow [2024-06-28 00:18:26,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 618 transitions, 10967 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:26,835 INFO L231 Difference]: Finished difference. Result has 312 places, 576 transitions, 9897 flow [2024-06-28 00:18:26,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9439, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9897, PETRI_PLACES=312, PETRI_TRANSITIONS=576} [2024-06-28 00:18:26,836 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 269 predicate places. [2024-06-28 00:18:26,836 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 576 transitions, 9897 flow [2024-06-28 00:18:26,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:26,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:26,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:26,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:18:26,837 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:26,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:26,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1771131827, now seen corresponding path program 7 times [2024-06-28 00:18:26,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:26,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719144943] [2024-06-28 00:18:26,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:26,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:31,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:31,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719144943] [2024-06-28 00:18:31,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719144943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:31,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:31,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:31,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019169910] [2024-06-28 00:18:31,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:31,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:31,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:31,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:31,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:31,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:18:31,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 576 transitions, 9897 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:31,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:31,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:18:31,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:34,021 INFO L124 PetriNetUnfolderBase]: 3839/6119 cut-off events. [2024-06-28 00:18:34,021 INFO L125 PetriNetUnfolderBase]: For 353690/353701 co-relation queries the response was YES. [2024-06-28 00:18:34,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53615 conditions, 6119 events. 3839/6119 cut-off events. For 353690/353701 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 37568 event pairs, 717 based on Foata normal form. 20/6136 useless extension candidates. Maximal degree in co-relation 53477. Up to 5355 conditions per place. [2024-06-28 00:18:34,110 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 521 selfloop transitions, 112 changer transitions 0/637 dead transitions. [2024-06-28 00:18:34,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 637 transitions, 11579 flow [2024-06-28 00:18:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:18:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:18:34,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 218 transitions. [2024-06-28 00:18:34,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3992673992673993 [2024-06-28 00:18:34,112 INFO L175 Difference]: Start difference. First operand has 312 places, 576 transitions, 9897 flow. Second operand 13 states and 218 transitions. [2024-06-28 00:18:34,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 637 transitions, 11579 flow [2024-06-28 00:18:34,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 637 transitions, 11228 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 00:18:35,007 INFO L231 Difference]: Finished difference. Result has 318 places, 579 transitions, 9939 flow [2024-06-28 00:18:35,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9546, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9939, PETRI_PLACES=318, PETRI_TRANSITIONS=579} [2024-06-28 00:18:35,008 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 275 predicate places. [2024-06-28 00:18:35,008 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 579 transitions, 9939 flow [2024-06-28 00:18:35,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:35,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:35,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:35,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:18:35,009 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:35,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:35,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1275720871, now seen corresponding path program 8 times [2024-06-28 00:18:35,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:35,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570861026] [2024-06-28 00:18:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:35,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:40,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:40,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570861026] [2024-06-28 00:18:40,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570861026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:40,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:40,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:18:40,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299165326] [2024-06-28 00:18:40,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:40,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:18:40,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:40,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:18:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:18:40,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:18:40,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 579 transitions, 9939 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:18:40,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:40,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:18:40,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:43,413 INFO L124 PetriNetUnfolderBase]: 4533/7300 cut-off events. [2024-06-28 00:18:43,413 INFO L125 PetriNetUnfolderBase]: For 448380/448404 co-relation queries the response was YES. [2024-06-28 00:18:43,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64618 conditions, 7300 events. 4533/7300 cut-off events. For 448380/448404 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 47258 event pairs, 1140 based on Foata normal form. 35/7333 useless extension candidates. Maximal degree in co-relation 64479. Up to 5689 conditions per place. [2024-06-28 00:18:43,511 INFO L140 encePairwiseOnDemand]: 27/42 looper letters, 498 selfloop transitions, 191 changer transitions 0/693 dead transitions. [2024-06-28 00:18:43,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 693 transitions, 13157 flow [2024-06-28 00:18:43,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:18:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:18:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-28 00:18:43,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 00:18:43,517 INFO L175 Difference]: Start difference. First operand has 318 places, 579 transitions, 9939 flow. Second operand 12 states and 210 transitions. [2024-06-28 00:18:43,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 693 transitions, 13157 flow [2024-06-28 00:18:44,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 693 transitions, 12909 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-28 00:18:44,684 INFO L231 Difference]: Finished difference. Result has 324 places, 634 transitions, 11480 flow [2024-06-28 00:18:44,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9691, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11480, PETRI_PLACES=324, PETRI_TRANSITIONS=634} [2024-06-28 00:18:44,685 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 281 predicate places. [2024-06-28 00:18:44,685 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 634 transitions, 11480 flow [2024-06-28 00:18:44,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:18:44,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:44,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:44,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:18:44,686 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:44,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:44,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1275511621, now seen corresponding path program 9 times [2024-06-28 00:18:44,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:44,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807754053] [2024-06-28 00:18:44,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:44,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:49,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:49,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:49,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807754053] [2024-06-28 00:18:49,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807754053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:49,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:49,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:18:49,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585966249] [2024-06-28 00:18:49,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:49,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:18:49,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:49,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:18:49,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:18:49,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:18:49,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 634 transitions, 11480 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:49,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:49,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:18:49,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:18:52,539 INFO L124 PetriNetUnfolderBase]: 4553/7340 cut-off events. [2024-06-28 00:18:52,539 INFO L125 PetriNetUnfolderBase]: For 454449/454473 co-relation queries the response was YES. [2024-06-28 00:18:52,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66309 conditions, 7340 events. 4553/7340 cut-off events. For 454449/454473 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 47947 event pairs, 1260 based on Foata normal form. 33/7371 useless extension candidates. Maximal degree in co-relation 66164. Up to 6693 conditions per place. [2024-06-28 00:18:52,636 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 608 selfloop transitions, 71 changer transitions 0/683 dead transitions. [2024-06-28 00:18:52,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 683 transitions, 13127 flow [2024-06-28 00:18:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:18:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:18:52,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 00:18:52,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004329004329004 [2024-06-28 00:18:52,639 INFO L175 Difference]: Start difference. First operand has 324 places, 634 transitions, 11480 flow. Second operand 11 states and 185 transitions. [2024-06-28 00:18:52,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 683 transitions, 13127 flow [2024-06-28 00:18:53,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 683 transitions, 12935 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-28 00:18:53,829 INFO L231 Difference]: Finished difference. Result has 331 places, 636 transitions, 11517 flow [2024-06-28 00:18:53,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11288, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11517, PETRI_PLACES=331, PETRI_TRANSITIONS=636} [2024-06-28 00:18:53,830 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 288 predicate places. [2024-06-28 00:18:53,830 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 636 transitions, 11517 flow [2024-06-28 00:18:53,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:18:53,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:18:53,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:18:53,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:18:53,830 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:18:53,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:18:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash -652752411, now seen corresponding path program 10 times [2024-06-28 00:18:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:18:53,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935716011] [2024-06-28 00:18:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:18:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:18:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:18:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:18:58,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:18:58,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935716011] [2024-06-28 00:18:58,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935716011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:18:58,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:18:58,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:18:58,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734957310] [2024-06-28 00:18:58,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:18:58,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:18:58,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:18:58,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:18:58,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:18:58,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:18:58,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 636 transitions, 11517 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:18:58,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:18:58,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:18:58,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:02,385 INFO L124 PetriNetUnfolderBase]: 4785/7743 cut-off events. [2024-06-28 00:19:02,385 INFO L125 PetriNetUnfolderBase]: For 497064/497088 co-relation queries the response was YES. [2024-06-28 00:19:02,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70701 conditions, 7743 events. 4785/7743 cut-off events. For 497064/497088 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 50977 event pairs, 1179 based on Foata normal form. 33/7774 useless extension candidates. Maximal degree in co-relation 70556. Up to 5721 conditions per place. [2024-06-28 00:19:02,491 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 532 selfloop transitions, 162 changer transitions 0/698 dead transitions. [2024-06-28 00:19:02,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 698 transitions, 13633 flow [2024-06-28 00:19:02,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:19:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:19:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-28 00:19:02,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 00:19:02,493 INFO L175 Difference]: Start difference. First operand has 331 places, 636 transitions, 11517 flow. Second operand 12 states and 203 transitions. [2024-06-28 00:19:02,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 698 transitions, 13633 flow [2024-06-28 00:19:03,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 698 transitions, 13488 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 00:19:03,703 INFO L231 Difference]: Finished difference. Result has 340 places, 641 transitions, 11978 flow [2024-06-28 00:19:03,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11372, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11978, PETRI_PLACES=340, PETRI_TRANSITIONS=641} [2024-06-28 00:19:03,704 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 297 predicate places. [2024-06-28 00:19:03,705 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 641 transitions, 11978 flow [2024-06-28 00:19:03,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:19:03,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:03,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:03,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:19:03,705 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:03,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:03,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1131387751, now seen corresponding path program 11 times [2024-06-28 00:19:03,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:03,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004899598] [2024-06-28 00:19:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:03,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:08,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:08,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004899598] [2024-06-28 00:19:08,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004899598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:08,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:08,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:19:08,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134121663] [2024-06-28 00:19:08,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:08,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:19:08,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:08,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:19:08,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:19:08,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:19:08,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 641 transitions, 11978 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:19:08,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:08,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:19:08,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:11,785 INFO L124 PetriNetUnfolderBase]: 4757/7699 cut-off events. [2024-06-28 00:19:11,785 INFO L125 PetriNetUnfolderBase]: For 494292/494316 co-relation queries the response was YES. [2024-06-28 00:19:11,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70083 conditions, 7699 events. 4757/7699 cut-off events. For 494292/494316 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 50978 event pairs, 1211 based on Foata normal form. 37/7734 useless extension candidates. Maximal degree in co-relation 69935. Up to 6713 conditions per place. [2024-06-28 00:19:11,886 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 570 selfloop transitions, 119 changer transitions 0/693 dead transitions. [2024-06-28 00:19:11,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 693 transitions, 13614 flow [2024-06-28 00:19:11,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:19:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:19:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-28 00:19:11,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 00:19:11,888 INFO L175 Difference]: Start difference. First operand has 340 places, 641 transitions, 11978 flow. Second operand 12 states and 198 transitions. [2024-06-28 00:19:11,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 693 transitions, 13614 flow [2024-06-28 00:19:13,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 693 transitions, 13345 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-28 00:19:13,072 INFO L231 Difference]: Finished difference. Result has 344 places, 641 transitions, 11963 flow [2024-06-28 00:19:13,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11709, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11963, PETRI_PLACES=344, PETRI_TRANSITIONS=641} [2024-06-28 00:19:13,073 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 301 predicate places. [2024-06-28 00:19:13,073 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 641 transitions, 11963 flow [2024-06-28 00:19:13,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:19:13,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:13,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:13,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:19:13,073 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:13,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash -136901431, now seen corresponding path program 12 times [2024-06-28 00:19:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:13,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932161280] [2024-06-28 00:19:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:18,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:18,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932161280] [2024-06-28 00:19:18,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932161280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:18,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:18,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:18,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796654546] [2024-06-28 00:19:18,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:18,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:18,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:18,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:18,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:18,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:19:18,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 641 transitions, 11963 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:18,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:18,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:19:18,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:22,213 INFO L124 PetriNetUnfolderBase]: 5043/8171 cut-off events. [2024-06-28 00:19:22,213 INFO L125 PetriNetUnfolderBase]: For 535421/535442 co-relation queries the response was YES. [2024-06-28 00:19:22,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75281 conditions, 8171 events. 5043/8171 cut-off events. For 535421/535442 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 54557 event pairs, 1230 based on Foata normal form. 34/8202 useless extension candidates. Maximal degree in co-relation 75131. Up to 6730 conditions per place. [2024-06-28 00:19:22,324 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 427 selfloop transitions, 286 changer transitions 0/717 dead transitions. [2024-06-28 00:19:22,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 717 transitions, 14707 flow [2024-06-28 00:19:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:19:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:19:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 00:19:22,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43506493506493504 [2024-06-28 00:19:22,325 INFO L175 Difference]: Start difference. First operand has 344 places, 641 transitions, 11963 flow. Second operand 11 states and 201 transitions. [2024-06-28 00:19:22,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 717 transitions, 14707 flow [2024-06-28 00:19:23,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 717 transitions, 14463 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 00:19:23,628 INFO L231 Difference]: Finished difference. Result has 349 places, 658 transitions, 13076 flow [2024-06-28 00:19:23,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11727, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=270, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13076, PETRI_PLACES=349, PETRI_TRANSITIONS=658} [2024-06-28 00:19:23,629 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 306 predicate places. [2024-06-28 00:19:23,629 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 658 transitions, 13076 flow [2024-06-28 00:19:23,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:23,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:23,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:23,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:19:23,629 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:23,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:23,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1573275255, now seen corresponding path program 13 times [2024-06-28 00:19:23,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:23,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255452873] [2024-06-28 00:19:23,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:23,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:28,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:28,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255452873] [2024-06-28 00:19:28,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255452873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:28,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:28,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:28,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092575000] [2024-06-28 00:19:28,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:28,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:28,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:28,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:28,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:28,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:19:28,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 658 transitions, 13076 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:28,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:28,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:19:28,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:32,069 INFO L124 PetriNetUnfolderBase]: 5179/8405 cut-off events. [2024-06-28 00:19:32,069 INFO L125 PetriNetUnfolderBase]: For 601424/601445 co-relation queries the response was YES. [2024-06-28 00:19:32,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81937 conditions, 8405 events. 5179/8405 cut-off events. For 601424/601445 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 55957 event pairs, 1264 based on Foata normal form. 28/8430 useless extension candidates. Maximal degree in co-relation 81782. Up to 5178 conditions per place. [2024-06-28 00:19:32,199 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 510 selfloop transitions, 202 changer transitions 0/716 dead transitions. [2024-06-28 00:19:32,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 716 transitions, 15244 flow [2024-06-28 00:19:32,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:19:32,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:19:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 00:19:32,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2024-06-28 00:19:32,201 INFO L175 Difference]: Start difference. First operand has 349 places, 658 transitions, 13076 flow. Second operand 11 states and 190 transitions. [2024-06-28 00:19:32,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 716 transitions, 15244 flow [2024-06-28 00:19:33,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 716 transitions, 14975 flow, removed 97 selfloop flow, removed 3 redundant places. [2024-06-28 00:19:33,580 INFO L231 Difference]: Finished difference. Result has 359 places, 663 transitions, 13514 flow [2024-06-28 00:19:33,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12809, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13514, PETRI_PLACES=359, PETRI_TRANSITIONS=663} [2024-06-28 00:19:33,581 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-28 00:19:33,581 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 663 transitions, 13514 flow [2024-06-28 00:19:33,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:33,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:33,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:33,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:19:33,581 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:33,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:33,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1839181785, now seen corresponding path program 14 times [2024-06-28 00:19:33,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:33,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295646345] [2024-06-28 00:19:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:33,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:38,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:38,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295646345] [2024-06-28 00:19:38,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295646345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:38,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:38,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:19:38,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298472130] [2024-06-28 00:19:38,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:38,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:19:38,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:38,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:19:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:19:38,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:19:38,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 663 transitions, 13514 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:38,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:38,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:19:38,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:42,054 INFO L124 PetriNetUnfolderBase]: 5219/8489 cut-off events. [2024-06-28 00:19:42,054 INFO L125 PetriNetUnfolderBase]: For 621654/621675 co-relation queries the response was YES. [2024-06-28 00:19:42,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83209 conditions, 8489 events. 5219/8489 cut-off events. For 621654/621675 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 57461 event pairs, 1334 based on Foata normal form. 32/8518 useless extension candidates. Maximal degree in co-relation 83050. Up to 7729 conditions per place. [2024-06-28 00:19:42,190 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 600 selfloop transitions, 107 changer transitions 0/711 dead transitions. [2024-06-28 00:19:42,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 711 transitions, 15279 flow [2024-06-28 00:19:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:19:42,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:19:42,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 00:19:42,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3961038961038961 [2024-06-28 00:19:42,193 INFO L175 Difference]: Start difference. First operand has 359 places, 663 transitions, 13514 flow. Second operand 11 states and 183 transitions. [2024-06-28 00:19:42,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 711 transitions, 15279 flow [2024-06-28 00:19:44,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 711 transitions, 14960 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 00:19:44,313 INFO L231 Difference]: Finished difference. Result has 364 places, 664 transitions, 13513 flow [2024-06-28 00:19:44,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13205, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13513, PETRI_PLACES=364, PETRI_TRANSITIONS=664} [2024-06-28 00:19:44,313 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 321 predicate places. [2024-06-28 00:19:44,313 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 664 transitions, 13513 flow [2024-06-28 00:19:44,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:19:44,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:44,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:44,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:19:44,314 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:44,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:44,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1838972535, now seen corresponding path program 15 times [2024-06-28 00:19:44,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:44,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543989362] [2024-06-28 00:19:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:44,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:49,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:49,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543989362] [2024-06-28 00:19:49,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543989362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:49,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:49,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:19:49,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333009956] [2024-06-28 00:19:49,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:49,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:19:49,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:19:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:19:49,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:19:49,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 664 transitions, 13513 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:19:49,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:49,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:19:49,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:19:52,769 INFO L124 PetriNetUnfolderBase]: 5199/8461 cut-off events. [2024-06-28 00:19:52,770 INFO L125 PetriNetUnfolderBase]: For 582733/582783 co-relation queries the response was YES. [2024-06-28 00:19:52,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80842 conditions, 8461 events. 5199/8461 cut-off events. For 582733/582783 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 57240 event pairs, 1312 based on Foata normal form. 57/8515 useless extension candidates. Maximal degree in co-relation 80681. Up to 7414 conditions per place. [2024-06-28 00:19:52,890 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 582 selfloop transitions, 126 changer transitions 0/712 dead transitions. [2024-06-28 00:19:52,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 712 transitions, 15232 flow [2024-06-28 00:19:52,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:19:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:19:52,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 00:19:52,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 00:19:52,893 INFO L175 Difference]: Start difference. First operand has 364 places, 664 transitions, 13513 flow. Second operand 11 states and 182 transitions. [2024-06-28 00:19:52,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 712 transitions, 15232 flow [2024-06-28 00:19:54,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 712 transitions, 14927 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 00:19:54,892 INFO L231 Difference]: Finished difference. Result has 367 places, 665 transitions, 13494 flow [2024-06-28 00:19:54,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13210, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13494, PETRI_PLACES=367, PETRI_TRANSITIONS=665} [2024-06-28 00:19:54,893 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 324 predicate places. [2024-06-28 00:19:54,893 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 665 transitions, 13494 flow [2024-06-28 00:19:54,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:19:54,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:19:54,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:19:54,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:19:54,893 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:19:54,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:19:54,894 INFO L85 PathProgramCache]: Analyzing trace with hash 354384075, now seen corresponding path program 1 times [2024-06-28 00:19:54,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:19:54,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003877514] [2024-06-28 00:19:54,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:19:54,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:19:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:19:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:19:59,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:19:59,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003877514] [2024-06-28 00:19:59,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003877514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:19:59,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:19:59,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:19:59,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614126562] [2024-06-28 00:19:59,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:19:59,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:19:59,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:19:59,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:19:59,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:19:59,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:19:59,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 665 transitions, 13494 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:19:59,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:19:59,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:19:59,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:03,388 INFO L124 PetriNetUnfolderBase]: 5350/8685 cut-off events. [2024-06-28 00:20:03,388 INFO L125 PetriNetUnfolderBase]: For 619748/619758 co-relation queries the response was YES. [2024-06-28 00:20:03,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83204 conditions, 8685 events. 5350/8685 cut-off events. For 619748/619758 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 58915 event pairs, 1288 based on Foata normal form. 28/8712 useless extension candidates. Maximal degree in co-relation 83041. Up to 7634 conditions per place. [2024-06-28 00:20:03,528 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 594 selfloop transitions, 145 changer transitions 0/743 dead transitions. [2024-06-28 00:20:03,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 743 transitions, 15903 flow [2024-06-28 00:20:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:20:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:20:03,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 00:20:03,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-28 00:20:03,529 INFO L175 Difference]: Start difference. First operand has 367 places, 665 transitions, 13494 flow. Second operand 11 states and 203 transitions. [2024-06-28 00:20:03,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 743 transitions, 15903 flow [2024-06-28 00:20:05,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 743 transitions, 15613 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 00:20:05,091 INFO L231 Difference]: Finished difference. Result has 372 places, 679 transitions, 13930 flow [2024-06-28 00:20:05,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13204, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13930, PETRI_PLACES=372, PETRI_TRANSITIONS=679} [2024-06-28 00:20:05,092 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 329 predicate places. [2024-06-28 00:20:05,093 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 679 transitions, 13930 flow [2024-06-28 00:20:05,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:20:05,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:05,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:05,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:20:05,093 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:05,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:05,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1316142831, now seen corresponding path program 2 times [2024-06-28 00:20:05,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:05,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471099130] [2024-06-28 00:20:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:09,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:09,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471099130] [2024-06-28 00:20:09,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471099130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:09,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:09,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:20:09,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948965200] [2024-06-28 00:20:09,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:09,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:20:09,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:09,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:20:09,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:20:09,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:20:09,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 679 transitions, 13930 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:20:09,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:09,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:20:09,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:13,762 INFO L124 PetriNetUnfolderBase]: 5398/8776 cut-off events. [2024-06-28 00:20:13,762 INFO L125 PetriNetUnfolderBase]: For 626593/626603 co-relation queries the response was YES. [2024-06-28 00:20:13,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84680 conditions, 8776 events. 5398/8776 cut-off events. For 626593/626603 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 59781 event pairs, 1488 based on Foata normal form. 22/8797 useless extension candidates. Maximal degree in co-relation 84514. Up to 8202 conditions per place. [2024-06-28 00:20:13,887 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 670 selfloop transitions, 61 changer transitions 0/735 dead transitions. [2024-06-28 00:20:13,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 735 transitions, 15715 flow [2024-06-28 00:20:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:20:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:20:13,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 00:20:13,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-28 00:20:13,889 INFO L175 Difference]: Start difference. First operand has 372 places, 679 transitions, 13930 flow. Second operand 11 states and 186 transitions. [2024-06-28 00:20:13,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 735 transitions, 15715 flow [2024-06-28 00:20:15,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 735 transitions, 15461 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-28 00:20:15,546 INFO L231 Difference]: Finished difference. Result has 379 places, 681 transitions, 13913 flow [2024-06-28 00:20:15,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13676, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=618, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13913, PETRI_PLACES=379, PETRI_TRANSITIONS=681} [2024-06-28 00:20:15,547 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 336 predicate places. [2024-06-28 00:20:15,547 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 681 transitions, 13913 flow [2024-06-28 00:20:15,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:20:15,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:15,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:15,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:20:15,548 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:15,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:15,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1439592891, now seen corresponding path program 3 times [2024-06-28 00:20:15,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:15,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041966862] [2024-06-28 00:20:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:15,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:20,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:20,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041966862] [2024-06-28 00:20:20,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041966862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:20,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:20,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:20:20,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824160519] [2024-06-28 00:20:20,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:20,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:20:20,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:20,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:20:20,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:20:20,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:20:20,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 681 transitions, 13913 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:20:20,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:20,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:20:20,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:23,887 INFO L124 PetriNetUnfolderBase]: 5446/8854 cut-off events. [2024-06-28 00:20:23,887 INFO L125 PetriNetUnfolderBase]: For 645544/645554 co-relation queries the response was YES. [2024-06-28 00:20:23,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85283 conditions, 8854 events. 5446/8854 cut-off events. For 645544/645554 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 60394 event pairs, 1536 based on Foata normal form. 22/8875 useless extension candidates. Maximal degree in co-relation 85115. Up to 8247 conditions per place. [2024-06-28 00:20:24,025 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 675 selfloop transitions, 58 changer transitions 0/737 dead transitions. [2024-06-28 00:20:24,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 737 transitions, 15694 flow [2024-06-28 00:20:24,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:20:24,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:20:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 00:20:24,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-28 00:20:24,027 INFO L175 Difference]: Start difference. First operand has 379 places, 681 transitions, 13913 flow. Second operand 11 states and 186 transitions. [2024-06-28 00:20:24,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 737 transitions, 15694 flow [2024-06-28 00:20:26,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 737 transitions, 15524 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 00:20:26,144 INFO L231 Difference]: Finished difference. Result has 383 places, 682 transitions, 13960 flow [2024-06-28 00:20:26,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13743, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13960, PETRI_PLACES=383, PETRI_TRANSITIONS=682} [2024-06-28 00:20:26,145 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 340 predicate places. [2024-06-28 00:20:26,145 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 682 transitions, 13960 flow [2024-06-28 00:20:26,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:20:26,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:26,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:26,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:20:26,146 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:26,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:26,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1384212701, now seen corresponding path program 4 times [2024-06-28 00:20:26,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:26,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684156656] [2024-06-28 00:20:26,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:26,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:30,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:30,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684156656] [2024-06-28 00:20:30,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684156656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:30,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:30,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:20:30,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056437540] [2024-06-28 00:20:30,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:30,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:20:30,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:20:30,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:20:30,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:20:30,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 682 transitions, 13960 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:30,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:30,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:20:30,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:33,899 INFO L124 PetriNetUnfolderBase]: 5528/8996 cut-off events. [2024-06-28 00:20:33,899 INFO L125 PetriNetUnfolderBase]: For 666433/666454 co-relation queries the response was YES. [2024-06-28 00:20:34,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86364 conditions, 8996 events. 5528/8996 cut-off events. For 666433/666454 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 60758 event pairs, 1172 based on Foata normal form. 28/9021 useless extension candidates. Maximal degree in co-relation 86195. Up to 8196 conditions per place. [2024-06-28 00:20:34,054 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 669 selfloop transitions, 60 changer transitions 0/733 dead transitions. [2024-06-28 00:20:34,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 733 transitions, 15739 flow [2024-06-28 00:20:34,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:20:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:20:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 00:20:34,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 00:20:34,056 INFO L175 Difference]: Start difference. First operand has 383 places, 682 transitions, 13960 flow. Second operand 9 states and 161 transitions. [2024-06-28 00:20:34,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 733 transitions, 15739 flow [2024-06-28 00:20:36,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 733 transitions, 15568 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 00:20:36,171 INFO L231 Difference]: Finished difference. Result has 384 places, 684 transitions, 14041 flow [2024-06-28 00:20:36,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13789, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14041, PETRI_PLACES=384, PETRI_TRANSITIONS=684} [2024-06-28 00:20:36,172 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-28 00:20:36,172 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 684 transitions, 14041 flow [2024-06-28 00:20:36,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:36,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:36,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:36,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:20:36,173 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:36,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:36,173 INFO L85 PathProgramCache]: Analyzing trace with hash 108174549, now seen corresponding path program 1 times [2024-06-28 00:20:36,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:36,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765447046] [2024-06-28 00:20:36,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:36,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:39,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:39,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765447046] [2024-06-28 00:20:39,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765447046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:39,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:39,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:20:39,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066571854] [2024-06-28 00:20:39,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:39,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:20:39,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:39,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:20:39,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:20:39,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:20:39,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 684 transitions, 14041 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:39,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:39,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:20:39,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:43,207 INFO L124 PetriNetUnfolderBase]: 5507/8970 cut-off events. [2024-06-28 00:20:43,207 INFO L125 PetriNetUnfolderBase]: For 651330/651351 co-relation queries the response was YES. [2024-06-28 00:20:43,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86015 conditions, 8970 events. 5507/8970 cut-off events. For 651330/651351 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 61262 event pairs, 1563 based on Foata normal form. 19/8986 useless extension candidates. Maximal degree in co-relation 85846. Up to 8570 conditions per place. [2024-06-28 00:20:43,339 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 648 selfloop transitions, 45 changer transitions 0/697 dead transitions. [2024-06-28 00:20:43,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 697 transitions, 15335 flow [2024-06-28 00:20:43,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:20:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:20:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 00:20:43,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3979591836734694 [2024-06-28 00:20:43,340 INFO L175 Difference]: Start difference. First operand has 384 places, 684 transitions, 14041 flow. Second operand 7 states and 117 transitions. [2024-06-28 00:20:43,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 697 transitions, 15335 flow [2024-06-28 00:20:45,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 697 transitions, 15139 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 00:20:45,429 INFO L231 Difference]: Finished difference. Result has 384 places, 674 transitions, 13779 flow [2024-06-28 00:20:45,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13675, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13779, PETRI_PLACES=384, PETRI_TRANSITIONS=674} [2024-06-28 00:20:45,430 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-28 00:20:45,430 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 674 transitions, 13779 flow [2024-06-28 00:20:45,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:45,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:45,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:45,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:20:45,430 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:45,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1448780153, now seen corresponding path program 5 times [2024-06-28 00:20:45,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:45,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144668933] [2024-06-28 00:20:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:45,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:20:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:20:49,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:20:49,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144668933] [2024-06-28 00:20:49,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144668933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:20:49,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:20:49,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:20:49,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734055287] [2024-06-28 00:20:49,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:20:49,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:20:49,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:20:49,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:20:49,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:20:49,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:20:49,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 674 transitions, 13779 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:49,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:20:49,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:20:49,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:20:53,548 INFO L124 PetriNetUnfolderBase]: 5623/9158 cut-off events. [2024-06-28 00:20:53,548 INFO L125 PetriNetUnfolderBase]: For 669913/669934 co-relation queries the response was YES. [2024-06-28 00:20:53,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87114 conditions, 9158 events. 5623/9158 cut-off events. For 669913/669934 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 62658 event pairs, 1093 based on Foata normal form. 28/9182 useless extension candidates. Maximal degree in co-relation 86944. Up to 8090 conditions per place. [2024-06-28 00:20:53,699 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 602 selfloop transitions, 124 changer transitions 0/730 dead transitions. [2024-06-28 00:20:53,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 730 transitions, 15600 flow [2024-06-28 00:20:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:20:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:20:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 00:20:53,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069264069264069 [2024-06-28 00:20:53,701 INFO L175 Difference]: Start difference. First operand has 384 places, 674 transitions, 13779 flow. Second operand 11 states and 188 transitions. [2024-06-28 00:20:53,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 730 transitions, 15600 flow [2024-06-28 00:20:56,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 730 transitions, 15504 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:20:56,116 INFO L231 Difference]: Finished difference. Result has 389 places, 677 transitions, 14096 flow [2024-06-28 00:20:56,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13683, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14096, PETRI_PLACES=389, PETRI_TRANSITIONS=677} [2024-06-28 00:20:56,117 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 346 predicate places. [2024-06-28 00:20:56,117 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 677 transitions, 14096 flow [2024-06-28 00:20:56,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:20:56,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:20:56,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:20:56,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:20:56,117 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:20:56,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:20:56,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1390572383, now seen corresponding path program 6 times [2024-06-28 00:20:56,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:20:56,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483834763] [2024-06-28 00:20:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:20:56,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:20:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:00,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:00,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483834763] [2024-06-28 00:21:00,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483834763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:00,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:00,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:21:00,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885425684] [2024-06-28 00:21:00,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:00,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:21:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:21:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:21:00,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:21:00,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 677 transitions, 14096 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:21:00,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:00,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:21:00,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:05,043 INFO L124 PetriNetUnfolderBase]: 5739/9358 cut-off events. [2024-06-28 00:21:05,043 INFO L125 PetriNetUnfolderBase]: For 703285/703304 co-relation queries the response was YES. [2024-06-28 00:21:05,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89355 conditions, 9358 events. 5739/9358 cut-off events. For 703285/703304 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 64683 event pairs, 1444 based on Foata normal form. 31/9388 useless extension candidates. Maximal degree in co-relation 89184. Up to 8693 conditions per place. [2024-06-28 00:21:05,180 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 657 selfloop transitions, 75 changer transitions 0/736 dead transitions. [2024-06-28 00:21:05,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 736 transitions, 15938 flow [2024-06-28 00:21:05,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:21:05,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:21:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 00:21:05,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069264069264069 [2024-06-28 00:21:05,182 INFO L175 Difference]: Start difference. First operand has 389 places, 677 transitions, 14096 flow. Second operand 11 states and 188 transitions. [2024-06-28 00:21:05,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 736 transitions, 15938 flow [2024-06-28 00:21:07,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 736 transitions, 15626 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 00:21:07,374 INFO L231 Difference]: Finished difference. Result has 392 places, 683 transitions, 14115 flow [2024-06-28 00:21:07,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13784, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14115, PETRI_PLACES=392, PETRI_TRANSITIONS=683} [2024-06-28 00:21:07,375 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 349 predicate places. [2024-06-28 00:21:07,375 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 683 transitions, 14115 flow [2024-06-28 00:21:07,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:21:07,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:07,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:07,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:21:07,376 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:07,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:07,376 INFO L85 PathProgramCache]: Analyzing trace with hash -452341473, now seen corresponding path program 7 times [2024-06-28 00:21:07,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:07,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420536031] [2024-06-28 00:21:07,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:07,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:11,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:11,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:11,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420536031] [2024-06-28 00:21:11,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420536031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:11,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:11,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:21:11,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133048623] [2024-06-28 00:21:11,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:11,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:21:11,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:11,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:21:11,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:21:11,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:21:11,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 683 transitions, 14115 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:21:11,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:11,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:21:11,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:15,929 INFO L124 PetriNetUnfolderBase]: 5903/9630 cut-off events. [2024-06-28 00:21:15,929 INFO L125 PetriNetUnfolderBase]: For 721126/721145 co-relation queries the response was YES. [2024-06-28 00:21:16,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90979 conditions, 9630 events. 5903/9630 cut-off events. For 721126/721145 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 66929 event pairs, 1496 based on Foata normal form. 31/9660 useless extension candidates. Maximal degree in co-relation 90806. Up to 8926 conditions per place. [2024-06-28 00:21:16,097 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 673 selfloop transitions, 72 changer transitions 0/749 dead transitions. [2024-06-28 00:21:16,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 749 transitions, 16081 flow [2024-06-28 00:21:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:21:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:21:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 00:21:16,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069264069264069 [2024-06-28 00:21:16,099 INFO L175 Difference]: Start difference. First operand has 392 places, 683 transitions, 14115 flow. Second operand 11 states and 188 transitions. [2024-06-28 00:21:16,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 749 transitions, 16081 flow [2024-06-28 00:21:18,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 749 transitions, 15856 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 00:21:18,922 INFO L231 Difference]: Finished difference. Result has 396 places, 695 transitions, 14337 flow [2024-06-28 00:21:18,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13890, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14337, PETRI_PLACES=396, PETRI_TRANSITIONS=695} [2024-06-28 00:21:18,922 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 353 predicate places. [2024-06-28 00:21:18,922 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 695 transitions, 14337 flow [2024-06-28 00:21:18,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:21:18,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:18,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:18,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:21:18,923 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:18,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:18,923 INFO L85 PathProgramCache]: Analyzing trace with hash -721272191, now seen corresponding path program 8 times [2024-06-28 00:21:18,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:18,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327424644] [2024-06-28 00:21:18,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:18,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:23,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:23,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:23,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327424644] [2024-06-28 00:21:23,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327424644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:23,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:23,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:21:23,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461886088] [2024-06-28 00:21:23,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:23,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:21:23,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:23,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:21:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:21:23,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:21:23,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 695 transitions, 14337 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:21:23,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:23,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:21:23,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:27,522 INFO L124 PetriNetUnfolderBase]: 5971/9764 cut-off events. [2024-06-28 00:21:27,522 INFO L125 PetriNetUnfolderBase]: For 742214/742235 co-relation queries the response was YES. [2024-06-28 00:21:27,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92039 conditions, 9764 events. 5971/9764 cut-off events. For 742214/742235 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 68405 event pairs, 1756 based on Foata normal form. 33/9796 useless extension candidates. Maximal degree in co-relation 91863. Up to 9160 conditions per place. [2024-06-28 00:21:27,674 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 672 selfloop transitions, 70 changer transitions 0/746 dead transitions. [2024-06-28 00:21:27,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 746 transitions, 16133 flow [2024-06-28 00:21:27,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:21:27,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:21:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 00:21:27,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119047619047619 [2024-06-28 00:21:27,676 INFO L175 Difference]: Start difference. First operand has 396 places, 695 transitions, 14337 flow. Second operand 10 states and 173 transitions. [2024-06-28 00:21:27,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 746 transitions, 16133 flow [2024-06-28 00:21:29,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 746 transitions, 15945 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 00:21:29,858 INFO L231 Difference]: Finished difference. Result has 401 places, 698 transitions, 14416 flow [2024-06-28 00:21:29,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14149, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14416, PETRI_PLACES=401, PETRI_TRANSITIONS=698} [2024-06-28 00:21:29,858 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 358 predicate places. [2024-06-28 00:21:29,858 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 698 transitions, 14416 flow [2024-06-28 00:21:29,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:21:29,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:29,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:29,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:21:29,859 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:29,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:29,859 INFO L85 PathProgramCache]: Analyzing trace with hash -555038411, now seen corresponding path program 9 times [2024-06-28 00:21:29,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:29,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753620418] [2024-06-28 00:21:29,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:29,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:34,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:34,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753620418] [2024-06-28 00:21:34,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753620418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:34,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:34,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:21:34,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354914047] [2024-06-28 00:21:34,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:34,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:21:34,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:34,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:21:34,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:21:34,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:21:34,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 698 transitions, 14416 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:21:34,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:34,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:21:34,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:38,440 INFO L124 PetriNetUnfolderBase]: 6039/9880 cut-off events. [2024-06-28 00:21:38,440 INFO L125 PetriNetUnfolderBase]: For 759985/760006 co-relation queries the response was YES. [2024-06-28 00:21:38,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92952 conditions, 9880 events. 6039/9880 cut-off events. For 759985/760006 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 69398 event pairs, 1774 based on Foata normal form. 33/9912 useless extension candidates. Maximal degree in co-relation 92774. Up to 9222 conditions per place. [2024-06-28 00:21:38,603 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 662 selfloop transitions, 88 changer transitions 0/754 dead transitions. [2024-06-28 00:21:38,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 754 transitions, 16252 flow [2024-06-28 00:21:38,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:21:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:21:38,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 00:21:38,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 00:21:38,604 INFO L175 Difference]: Start difference. First operand has 401 places, 698 transitions, 14416 flow. Second operand 11 states and 189 transitions. [2024-06-28 00:21:38,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 754 transitions, 16252 flow [2024-06-28 00:21:41,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 754 transitions, 16052 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 00:21:41,270 INFO L231 Difference]: Finished difference. Result has 407 places, 701 transitions, 14521 flow [2024-06-28 00:21:41,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14216, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14521, PETRI_PLACES=407, PETRI_TRANSITIONS=701} [2024-06-28 00:21:41,271 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 364 predicate places. [2024-06-28 00:21:41,271 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 701 transitions, 14521 flow [2024-06-28 00:21:41,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:21:41,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:41,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:41,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:21:41,272 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:41,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:41,273 INFO L85 PathProgramCache]: Analyzing trace with hash -725856161, now seen corresponding path program 10 times [2024-06-28 00:21:41,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:41,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055937488] [2024-06-28 00:21:41,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:41,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:45,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:45,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055937488] [2024-06-28 00:21:45,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055937488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:45,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:45,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:21:45,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948220397] [2024-06-28 00:21:45,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:45,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:21:45,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:45,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:21:45,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:21:45,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:21:45,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 701 transitions, 14521 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:45,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:45,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:21:45,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:21:49,292 INFO L124 PetriNetUnfolderBase]: 6087/9963 cut-off events. [2024-06-28 00:21:49,292 INFO L125 PetriNetUnfolderBase]: For 776173/776194 co-relation queries the response was YES. [2024-06-28 00:21:49,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93840 conditions, 9963 events. 6087/9963 cut-off events. For 776173/776194 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 69965 event pairs, 1787 based on Foata normal form. 28/9988 useless extension candidates. Maximal degree in co-relation 93660. Up to 9330 conditions per place. [2024-06-28 00:21:49,470 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 675 selfloop transitions, 61 changer transitions 0/740 dead transitions. [2024-06-28 00:21:49,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 740 transitions, 16268 flow [2024-06-28 00:21:49,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:21:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:21:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:21:49,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3738095238095238 [2024-06-28 00:21:49,473 INFO L175 Difference]: Start difference. First operand has 407 places, 701 transitions, 14521 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:21:49,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 740 transitions, 16268 flow [2024-06-28 00:21:52,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 740 transitions, 16036 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 00:21:52,429 INFO L231 Difference]: Finished difference. Result has 411 places, 702 transitions, 14525 flow [2024-06-28 00:21:52,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14289, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14525, PETRI_PLACES=411, PETRI_TRANSITIONS=702} [2024-06-28 00:21:52,430 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 368 predicate places. [2024-06-28 00:21:52,430 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 702 transitions, 14525 flow [2024-06-28 00:21:52,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:52,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:21:52,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:21:52,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:21:52,431 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:21:52,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:21:52,431 INFO L85 PathProgramCache]: Analyzing trace with hash 551973601, now seen corresponding path program 2 times [2024-06-28 00:21:52,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:21:52,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072942746] [2024-06-28 00:21:52,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:21:52,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:21:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:21:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:21:55,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:21:55,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072942746] [2024-06-28 00:21:55,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072942746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:21:55,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:21:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:21:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774775630] [2024-06-28 00:21:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:21:55,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:21:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:21:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:21:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:21:55,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:21:55,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 702 transitions, 14525 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:21:55,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:21:55,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:21:55,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:00,072 INFO L124 PetriNetUnfolderBase]: 6086/9947 cut-off events. [2024-06-28 00:22:00,072 INFO L125 PetriNetUnfolderBase]: For 751940/751961 co-relation queries the response was YES. [2024-06-28 00:22:00,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93525 conditions, 9947 events. 6086/9947 cut-off events. For 751940/751961 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 69527 event pairs, 1542 based on Foata normal form. 19/9962 useless extension candidates. Maximal degree in co-relation 93343. Up to 9518 conditions per place. [2024-06-28 00:22:00,225 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 634 selfloop transitions, 77 changer transitions 0/715 dead transitions. [2024-06-28 00:22:00,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 715 transitions, 15937 flow [2024-06-28 00:22:00,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:22:00,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:22:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 00:22:00,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 00:22:00,226 INFO L175 Difference]: Start difference. First operand has 411 places, 702 transitions, 14525 flow. Second operand 6 states and 105 transitions. [2024-06-28 00:22:00,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 715 transitions, 15937 flow [2024-06-28 00:22:02,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 715 transitions, 15733 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 00:22:02,937 INFO L231 Difference]: Finished difference. Result has 409 places, 699 transitions, 14429 flow [2024-06-28 00:22:02,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14197, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14429, PETRI_PLACES=409, PETRI_TRANSITIONS=699} [2024-06-28 00:22:02,937 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 366 predicate places. [2024-06-28 00:22:02,937 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 699 transitions, 14429 flow [2024-06-28 00:22:02,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:02,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:02,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:02,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:22:02,938 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:02,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:02,938 INFO L85 PathProgramCache]: Analyzing trace with hash 572597653, now seen corresponding path program 1 times [2024-06-28 00:22:02,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:02,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909160172] [2024-06-28 00:22:02,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:02,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:06,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:06,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909160172] [2024-06-28 00:22:06,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909160172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:06,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:06,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:22:06,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872044243] [2024-06-28 00:22:06,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:06,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:22:06,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:22:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:22:07,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:22:07,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 699 transitions, 14429 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:07,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:07,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:22:07,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:11,135 INFO L124 PetriNetUnfolderBase]: 6096/9971 cut-off events. [2024-06-28 00:22:11,136 INFO L125 PetriNetUnfolderBase]: For 744444/744462 co-relation queries the response was YES. [2024-06-28 00:22:11,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93123 conditions, 9971 events. 6096/9971 cut-off events. For 744444/744462 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 69848 event pairs, 1860 based on Foata normal form. 16/9984 useless extension candidates. Maximal degree in co-relation 92940. Up to 9600 conditions per place. [2024-06-28 00:22:11,310 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 676 selfloop transitions, 33 changer transitions 0/713 dead transitions. [2024-06-28 00:22:11,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 713 transitions, 15925 flow [2024-06-28 00:22:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:22:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:22:11,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-28 00:22:11,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35374149659863946 [2024-06-28 00:22:11,311 INFO L175 Difference]: Start difference. First operand has 409 places, 699 transitions, 14429 flow. Second operand 7 states and 104 transitions. [2024-06-28 00:22:11,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 713 transitions, 15925 flow [2024-06-28 00:22:14,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 713 transitions, 15812 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 00:22:14,104 INFO L231 Difference]: Finished difference. Result has 413 places, 702 transitions, 14442 flow [2024-06-28 00:22:14,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14316, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14442, PETRI_PLACES=413, PETRI_TRANSITIONS=702} [2024-06-28 00:22:14,105 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 370 predicate places. [2024-06-28 00:22:14,105 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 702 transitions, 14442 flow [2024-06-28 00:22:14,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:14,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:14,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:14,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:22:14,106 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:14,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:14,106 INFO L85 PathProgramCache]: Analyzing trace with hash 571934191, now seen corresponding path program 3 times [2024-06-28 00:22:14,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:14,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288226239] [2024-06-28 00:22:14,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:14,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:18,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:18,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288226239] [2024-06-28 00:22:18,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288226239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:18,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:18,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:22:18,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357163263] [2024-06-28 00:22:18,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:18,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:22:18,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:18,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:22:18,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:22:18,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:22:18,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 702 transitions, 14442 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:18,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:18,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:22:18,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:22,568 INFO L124 PetriNetUnfolderBase]: 6080/9927 cut-off events. [2024-06-28 00:22:22,568 INFO L125 PetriNetUnfolderBase]: For 748966/748980 co-relation queries the response was YES. [2024-06-28 00:22:22,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93255 conditions, 9927 events. 6080/9927 cut-off events. For 748966/748980 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 69128 event pairs, 1382 based on Foata normal form. 5/9928 useless extension candidates. Maximal degree in co-relation 93071. Up to 9512 conditions per place. [2024-06-28 00:22:22,726 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 629 selfloop transitions, 70 changer transitions 0/703 dead transitions. [2024-06-28 00:22:22,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 703 transitions, 15666 flow [2024-06-28 00:22:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:22:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:22:22,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-28 00:22:22,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 00:22:22,728 INFO L175 Difference]: Start difference. First operand has 413 places, 702 transitions, 14442 flow. Second operand 6 states and 98 transitions. [2024-06-28 00:22:22,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 703 transitions, 15666 flow [2024-06-28 00:22:25,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 703 transitions, 15572 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 00:22:25,543 INFO L231 Difference]: Finished difference. Result has 414 places, 693 transitions, 14294 flow [2024-06-28 00:22:25,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14140, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=14294, PETRI_PLACES=414, PETRI_TRANSITIONS=693} [2024-06-28 00:22:25,544 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 371 predicate places. [2024-06-28 00:22:25,544 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 693 transitions, 14294 flow [2024-06-28 00:22:25,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:25,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:25,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:25,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:22:25,544 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:25,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:25,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1900002479, now seen corresponding path program 11 times [2024-06-28 00:22:25,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:25,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810552798] [2024-06-28 00:22:25,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:25,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:30,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:30,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810552798] [2024-06-28 00:22:30,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810552798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:30,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:30,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:22:30,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109193081] [2024-06-28 00:22:30,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:30,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:22:30,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:30,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:22:30,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:22:30,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:22:30,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 693 transitions, 14294 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:30,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:30,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:22:30,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:34,944 INFO L124 PetriNetUnfolderBase]: 6324/10328 cut-off events. [2024-06-28 00:22:34,944 INFO L125 PetriNetUnfolderBase]: For 822655/822660 co-relation queries the response was YES. [2024-06-28 00:22:35,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96888 conditions, 10328 events. 6324/10328 cut-off events. For 822655/822660 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 72586 event pairs, 1476 based on Foata normal form. 20/10345 useless extension candidates. Maximal degree in co-relation 96703. Up to 9193 conditions per place. [2024-06-28 00:22:35,132 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 551 selfloop transitions, 230 changer transitions 0/785 dead transitions. [2024-06-28 00:22:35,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 785 transitions, 16943 flow [2024-06-28 00:22:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 00:22:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 00:22:35,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2024-06-28 00:22:35,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267399267399267 [2024-06-28 00:22:35,133 INFO L175 Difference]: Start difference. First operand has 414 places, 693 transitions, 14294 flow. Second operand 13 states and 233 transitions. [2024-06-28 00:22:35,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 785 transitions, 16943 flow [2024-06-28 00:22:38,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 785 transitions, 16743 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:22:38,117 INFO L231 Difference]: Finished difference. Result has 423 places, 723 transitions, 15193 flow [2024-06-28 00:22:38,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14094, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=693, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15193, PETRI_PLACES=423, PETRI_TRANSITIONS=723} [2024-06-28 00:22:38,117 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 380 predicate places. [2024-06-28 00:22:38,117 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 723 transitions, 15193 flow [2024-06-28 00:22:38,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:38,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:38,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:38,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:22:38,118 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:38,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:38,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1594073355, now seen corresponding path program 12 times [2024-06-28 00:22:38,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:38,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367453159] [2024-06-28 00:22:38,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:38,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:42,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:42,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:42,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367453159] [2024-06-28 00:22:42,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367453159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:42,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:42,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:22:42,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909038857] [2024-06-28 00:22:42,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:42,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:22:42,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:42,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:22:42,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:22:42,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:22:42,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 723 transitions, 15193 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:22:42,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:42,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:22:42,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:22:47,805 INFO L124 PetriNetUnfolderBase]: 6454/10552 cut-off events. [2024-06-28 00:22:47,805 INFO L125 PetriNetUnfolderBase]: For 851692/851708 co-relation queries the response was YES. [2024-06-28 00:22:47,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99950 conditions, 10552 events. 6454/10552 cut-off events. For 851692/851708 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 74527 event pairs, 1435 based on Foata normal form. 21/10570 useless extension candidates. Maximal degree in co-relation 99763. Up to 9738 conditions per place. [2024-06-28 00:22:47,976 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 667 selfloop transitions, 102 changer transitions 0/773 dead transitions. [2024-06-28 00:22:47,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 773 transitions, 17105 flow [2024-06-28 00:22:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:22:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:22:47,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 00:22:47,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-28 00:22:47,978 INFO L175 Difference]: Start difference. First operand has 423 places, 723 transitions, 15193 flow. Second operand 11 states and 180 transitions. [2024-06-28 00:22:47,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 773 transitions, 17105 flow [2024-06-28 00:22:50,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 773 transitions, 16855 flow, removed 91 selfloop flow, removed 6 redundant places. [2024-06-28 00:22:50,857 INFO L231 Difference]: Finished difference. Result has 429 places, 728 transitions, 15356 flow [2024-06-28 00:22:50,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14943, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15356, PETRI_PLACES=429, PETRI_TRANSITIONS=728} [2024-06-28 00:22:50,858 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 386 predicate places. [2024-06-28 00:22:50,858 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 728 transitions, 15356 flow [2024-06-28 00:22:50,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:22:50,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:22:50,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:22:50,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:22:50,858 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:22:50,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:22:50,858 INFO L85 PathProgramCache]: Analyzing trace with hash 719738029, now seen corresponding path program 13 times [2024-06-28 00:22:50,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:22:50,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883267694] [2024-06-28 00:22:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:22:50,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:22:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:22:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:22:55,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:22:55,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883267694] [2024-06-28 00:22:55,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883267694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:22:55,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:22:55,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:22:55,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391403899] [2024-06-28 00:22:55,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:22:55,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:22:55,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:22:55,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:22:55,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:22:55,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:22:55,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 728 transitions, 15356 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:22:55,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:22:55,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:22:55,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:01,121 INFO L124 PetriNetUnfolderBase]: 6570/10770 cut-off events. [2024-06-28 00:23:01,122 INFO L125 PetriNetUnfolderBase]: For 874986/875004 co-relation queries the response was YES. [2024-06-28 00:23:01,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101336 conditions, 10770 events. 6570/10770 cut-off events. For 874986/875004 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 76929 event pairs, 2082 based on Foata normal form. 25/10793 useless extension candidates. Maximal degree in co-relation 101150. Up to 10142 conditions per place. [2024-06-28 00:23:01,385 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 715 selfloop transitions, 57 changer transitions 0/776 dead transitions. [2024-06-28 00:23:01,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 776 transitions, 17238 flow [2024-06-28 00:23:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:23:01,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:23:01,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 00:23:01,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 00:23:01,387 INFO L175 Difference]: Start difference. First operand has 429 places, 728 transitions, 15356 flow. Second operand 11 states and 175 transitions. [2024-06-28 00:23:01,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 776 transitions, 17238 flow [2024-06-28 00:23:04,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 776 transitions, 16950 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 00:23:04,493 INFO L231 Difference]: Finished difference. Result has 432 places, 734 transitions, 15370 flow [2024-06-28 00:23:04,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15068, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15370, PETRI_PLACES=432, PETRI_TRANSITIONS=734} [2024-06-28 00:23:04,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 389 predicate places. [2024-06-28 00:23:04,494 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 734 transitions, 15370 flow [2024-06-28 00:23:04,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:04,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:04,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:04,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:23:04,495 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:04,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:04,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1390228159, now seen corresponding path program 14 times [2024-06-28 00:23:04,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:04,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276486400] [2024-06-28 00:23:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:04,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:09,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:09,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276486400] [2024-06-28 00:23:09,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276486400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:09,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:09,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:23:09,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130628645] [2024-06-28 00:23:09,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:09,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:23:09,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:09,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:23:09,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:23:09,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:23:09,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 734 transitions, 15370 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:23:09,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:09,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:23:09,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:15,491 INFO L124 PetriNetUnfolderBase]: 6734/11043 cut-off events. [2024-06-28 00:23:15,491 INFO L125 PetriNetUnfolderBase]: For 919213/919231 co-relation queries the response was YES. [2024-06-28 00:23:15,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103601 conditions, 11043 events. 6734/11043 cut-off events. For 919213/919231 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 79088 event pairs, 2000 based on Foata normal form. 31/11072 useless extension candidates. Maximal degree in co-relation 103413. Up to 10189 conditions per place. [2024-06-28 00:23:15,688 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 649 selfloop transitions, 145 changer transitions 0/798 dead transitions. [2024-06-28 00:23:15,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 798 transitions, 17983 flow [2024-06-28 00:23:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:23:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:23:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 00:23:15,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 00:23:15,690 INFO L175 Difference]: Start difference. First operand has 432 places, 734 transitions, 15370 flow. Second operand 12 states and 204 transitions. [2024-06-28 00:23:15,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 798 transitions, 17983 flow [2024-06-28 00:23:18,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 798 transitions, 17812 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 00:23:18,935 INFO L231 Difference]: Finished difference. Result has 440 places, 748 transitions, 15967 flow [2024-06-28 00:23:18,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15199, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15967, PETRI_PLACES=440, PETRI_TRANSITIONS=748} [2024-06-28 00:23:18,936 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 397 predicate places. [2024-06-28 00:23:18,936 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 748 transitions, 15967 flow [2024-06-28 00:23:18,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 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) [2024-06-28 00:23:18,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:18,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:18,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:23:18,937 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:18,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:18,937 INFO L85 PathProgramCache]: Analyzing trace with hash 682772189, now seen corresponding path program 15 times [2024-06-28 00:23:18,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:18,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898180204] [2024-06-28 00:23:18,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:18,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:23:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:23:23,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:23:23,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898180204] [2024-06-28 00:23:23,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898180204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:23:23,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:23:23,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:23:23,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767734412] [2024-06-28 00:23:23,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:23:23,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:23:23,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:23:23,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:23:23,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:23:23,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2024-06-28 00:23:23,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 748 transitions, 15967 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:23,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:23:23,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2024-06-28 00:23:23,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:23:29,714 INFO L124 PetriNetUnfolderBase]: 6802/11159 cut-off events. [2024-06-28 00:23:29,714 INFO L125 PetriNetUnfolderBase]: For 930172/930184 co-relation queries the response was YES. [2024-06-28 00:23:29,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105275 conditions, 11159 events. 6802/11159 cut-off events. For 930172/930184 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 80081 event pairs, 2030 based on Foata normal form. 22/11178 useless extension candidates. Maximal degree in co-relation 105085. Up to 10408 conditions per place. [2024-06-28 00:23:29,900 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 688 selfloop transitions, 106 changer transitions 0/798 dead transitions. [2024-06-28 00:23:29,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 798 transitions, 17903 flow [2024-06-28 00:23:29,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:23:29,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:23:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 00:23:29,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 00:23:29,902 INFO L175 Difference]: Start difference. First operand has 440 places, 748 transitions, 15967 flow. Second operand 12 states and 189 transitions. [2024-06-28 00:23:29,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 798 transitions, 17903 flow [2024-06-28 00:23:33,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 798 transitions, 17591 flow, removed 85 selfloop flow, removed 6 redundant places. [2024-06-28 00:23:33,471 INFO L231 Difference]: Finished difference. Result has 447 places, 751 transitions, 16014 flow [2024-06-28 00:23:33,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15655, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16014, PETRI_PLACES=447, PETRI_TRANSITIONS=751} [2024-06-28 00:23:33,471 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 404 predicate places. [2024-06-28 00:23:33,471 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 751 transitions, 16014 flow [2024-06-28 00:23:33,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:23:33,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:23:33,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:23:33,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:23:33,472 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:23:33,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:23:33,472 INFO L85 PathProgramCache]: Analyzing trace with hash -905719151, now seen corresponding path program 16 times [2024-06-28 00:23:33,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:23:33,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191387597] [2024-06-28 00:23:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:23:33,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:23:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat