./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix050.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-nonrel/mix050.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/mix050.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix050.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 03:33:23,859 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:33:23,920 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:33:23,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:33:23,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:33:23,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:33:23,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:33:23,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:33:23,951 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:33:23,955 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:33:23,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:33:23,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:33:23,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:33:23,967 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:33:23,967 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:33:23,968 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:33:23,968 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:33:23,968 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:33:23,968 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:33:23,969 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:33:23,969 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:33:23,970 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:33:23,970 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:33:23,970 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:33:23,971 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:33:23,971 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:33:23,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:33:23,971 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:33:23,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:33:23,972 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:33:23,973 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:33:23,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:33:23,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:33:23,973 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:33:23,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:33:23,974 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:33:23,974 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:33:23,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:33:23,974 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:33:23,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:33:23,975 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:33:23,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:33:23,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:33:23,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:33:24,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:33:24,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:33:24,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:33:24,233 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:33:24,234 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:33:24,234 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix050.i [2024-06-28 03:33:25,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:33:25,430 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:33:25,431 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix050.i [2024-06-28 03:33:25,449 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677fcb473/2c694bcbe18c4c3ea52145a0e158c964/FLAG8d40d0e0f [2024-06-28 03:33:25,462 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677fcb473/2c694bcbe18c4c3ea52145a0e158c964 [2024-06-28 03:33:25,464 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:33:25,465 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:33:25,466 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix050.yml/witness.yml [2024-06-28 03:33:25,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:33:25,624 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:33:25,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:33:25,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:33:25,629 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:33:25,630 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:33:25" (1/2) ... [2024-06-28 03:33:25,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb1a26d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:25, skipping insertion in model container [2024-06-28 03:33:25,631 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:33:25" (1/2) ... [2024-06-28 03:33:25,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d5bde43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:25, skipping insertion in model container [2024-06-28 03:33:25,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:33:25" (2/2) ... [2024-06-28 03:33:25,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb1a26d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:25, skipping insertion in model container [2024-06-28 03:33:25,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:33:25" (2/2) ... [2024-06-28 03:33:25,633 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:33:25,727 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:33:25,729 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] ((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:33:25,729 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] ((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:33:25,729 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:33:25,729 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] ((((((((((((((((((((((! multithreaded || (z == 0 || z == 1)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0) [2024-06-28 03:33:25,729 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:33:25,730 INFO L106 edCorrectnessWitness]: ghost_update [L864-L864] multithreaded = 1; [2024-06-28 03:33:25,765 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:33:26,029 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:33:26,036 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:33:26,122 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:33:26,161 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:33:26,161 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:26 WrapperNode [2024-06-28 03:33:26,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:33:26,162 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:33:26,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:33:26,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:33:26,168 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 03:33:26" (1/1) ... [2024-06-28 03:33:26,179 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 03:33:26" (1/1) ... [2024-06-28 03:33:26,216 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-28 03:33:26,217 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:33:26,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:33:26,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:33:26,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:33:26,225 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 03:33:26" (1/1) ... [2024-06-28 03:33:26,226 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 03:33:26" (1/1) ... [2024-06-28 03:33:26,228 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 03:33:26" (1/1) ... [2024-06-28 03:33:26,240 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:33:26,242 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 03:33:26" (1/1) ... [2024-06-28 03:33:26,242 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 03:33:26" (1/1) ... [2024-06-28 03:33:26,254 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 03:33:26" (1/1) ... [2024-06-28 03:33:26,256 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 03:33:26" (1/1) ... [2024-06-28 03:33:26,257 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 03:33:26" (1/1) ... [2024-06-28 03:33:26,259 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 03:33:26" (1/1) ... [2024-06-28 03:33:26,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:33:26,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:33:26,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:33:26,262 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:33:26,263 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 03:33:26" (1/1) ... [2024-06-28 03:33:26,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:33:26,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:33:26,317 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 03:33:26,359 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 03:33:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:33:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:33:26,372 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:33:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:33:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:33:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:33:26,373 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:33:26,373 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:33:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:33:26,374 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:33:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:33:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:33:26,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:33:26,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:33:26,376 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 03:33:26,518 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:33:26,520 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:33:26,863 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:33:26,863 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:33:26,987 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:33:26,987 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:33:26,988 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:33:26 BoogieIcfgContainer [2024-06-28 03:33:26,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:33:26,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:33:26,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:33:26,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:33:26,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:33:25" (1/4) ... [2024-06-28 03:33:26,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1131d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:33:26, skipping insertion in model container [2024-06-28 03:33:26,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:33:25" (2/4) ... [2024-06-28 03:33:26,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1131d9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:33:26, skipping insertion in model container [2024-06-28 03:33:26,993 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 03:33:26" (3/4) ... [2024-06-28 03:33:26,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1131d9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:33:26, skipping insertion in model container [2024-06-28 03:33:26,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:33:26" (4/4) ... [2024-06-28 03:33:26,994 INFO L112 eAbstractionObserver]: Analyzing ICFG mix050.i [2024-06-28 03:33:27,007 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:33:27,008 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:33:27,008 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:33:27,044 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:33:27,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:33:27,088 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-28 03:33:27,088 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:33:27,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:33:27,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:33:27,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-28 03:33:27,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:33:27,102 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;@760b14de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:33:27,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:33:27,105 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:33:27,105 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:33:27,105 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:33:27,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:27,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:33:27,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:27,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:27,144 INFO L85 PathProgramCache]: Analyzing trace with hash 406042836, now seen corresponding path program 1 times [2024-06-28 03:33:27,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:27,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652001488] [2024-06-28 03:33:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:27,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:28,165 INFO 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 03:33:28,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:28,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652001488] [2024-06-28 03:33:28,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652001488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:28,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:28,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:33:28,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539259802] [2024-06-28 03:33:28,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:28,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:33:28,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:33:28,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:33:28,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-06-28 03:33:28,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:28,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:28,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-06-28 03:33:28,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:29,385 INFO L124 PetriNetUnfolderBase]: 7892/10907 cut-off events. [2024-06-28 03:33:29,385 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-06-28 03:33:29,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21984 conditions, 10907 events. 7892/10907 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 57580 event pairs, 6010 based on Foata normal form. 1/10753 useless extension candidates. Maximal degree in co-relation 21971. Up to 10748 conditions per place. [2024-06-28 03:33:29,440 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 42 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-28 03:33:29,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 225 flow [2024-06-28 03:33:29,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:33:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:33:29,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-06-28 03:33:29,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-06-28 03:33:29,450 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 96 transitions. [2024-06-28 03:33:29,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 225 flow [2024-06-28 03:33:29,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:33:29,455 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-28 03:33:29,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 03:33:29,459 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-28 03:33:29,459 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-28 03:33:29,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:29,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:29,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:29,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:33:29,460 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:29,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:29,460 INFO L85 PathProgramCache]: Analyzing trace with hash -634804941, now seen corresponding path program 1 times [2024-06-28 03:33:29,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:29,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870935518] [2024-06-28 03:33:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:29,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:30,111 INFO 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 03:33:30,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:30,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870935518] [2024-06-28 03:33:30,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870935518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:30,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:30,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:33:30,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734945336] [2024-06-28 03:33:30,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:30,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:33:30,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:30,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:33:30,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:33:30,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 51 [2024-06-28 03:33:30,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:30,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:30,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 51 [2024-06-28 03:33:30,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:31,171 INFO L124 PetriNetUnfolderBase]: 7882/10904 cut-off events. [2024-06-28 03:33:31,171 INFO L125 PetriNetUnfolderBase]: For 2124/2124 co-relation queries the response was YES. [2024-06-28 03:33:31,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24942 conditions, 10904 events. 7882/10904 cut-off events. For 2124/2124 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 57610 event pairs, 5323 based on Foata normal form. 4/10905 useless extension candidates. Maximal degree in co-relation 24930. Up to 10713 conditions per place. [2024-06-28 03:33:31,226 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 52 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-28 03:33:31,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 317 flow [2024-06-28 03:33:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:33:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:33:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-06-28 03:33:31,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6127450980392157 [2024-06-28 03:33:31,229 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 125 transitions. [2024-06-28 03:33:31,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 317 flow [2024-06-28 03:33:31,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:33:31,233 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-28 03:33:31,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-28 03:33:31,233 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-28 03:33:31,234 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-28 03:33:31,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:31,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:31,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:31,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:33:31,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:31,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:31,249 INFO L85 PathProgramCache]: Analyzing trace with hash -162136686, now seen corresponding path program 1 times [2024-06-28 03:33:31,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:31,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272496847] [2024-06-28 03:33:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:31,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:32,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:32,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:32,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272496847] [2024-06-28 03:33:32,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272496847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:32,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:32,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:33:32,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316404012] [2024-06-28 03:33:32,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:32,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:33:32,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:33:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:33:32,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:33:32,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:32,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:32,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:33:32,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:33,927 INFO L124 PetriNetUnfolderBase]: 9557/13165 cut-off events. [2024-06-28 03:33:33,927 INFO L125 PetriNetUnfolderBase]: For 7059/7059 co-relation queries the response was YES. [2024-06-28 03:33:33,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33404 conditions, 13165 events. 9557/13165 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 69864 event pairs, 5407 based on Foata normal form. 4/13166 useless extension candidates. Maximal degree in co-relation 33390. Up to 12912 conditions per place. [2024-06-28 03:33:33,995 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 73 selfloop transitions, 17 changer transitions 0/97 dead transitions. [2024-06-28 03:33:33,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 97 transitions, 504 flow [2024-06-28 03:33:33,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:33:33,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:33:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-28 03:33:33,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5816993464052288 [2024-06-28 03:33:34,000 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 6 states and 178 transitions. [2024-06-28 03:33:34,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 97 transitions, 504 flow [2024-06-28 03:33:34,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 97 transitions, 476 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 03:33:34,005 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 254 flow [2024-06-28 03:33:34,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-06-28 03:33:34,006 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-28 03:33:34,007 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 254 flow [2024-06-28 03:33:34,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:34,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:34,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:34,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:33:34,007 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:34,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:34,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1843571480, now seen corresponding path program 1 times [2024-06-28 03:33:34,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:34,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334347737] [2024-06-28 03:33:34,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:34,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:35,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:35,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334347737] [2024-06-28 03:33:35,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334347737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:35,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:35,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:33:35,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560153370] [2024-06-28 03:33:35,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:35,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:33:35,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:35,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:33:35,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:33:35,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:33:35,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:33:35,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:35,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:33:35,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:36,490 INFO L124 PetriNetUnfolderBase]: 9541/13143 cut-off events. [2024-06-28 03:33:36,491 INFO L125 PetriNetUnfolderBase]: For 14290/14290 co-relation queries the response was YES. [2024-06-28 03:33:36,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37268 conditions, 13143 events. 9541/13143 cut-off events. For 14290/14290 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 69851 event pairs, 4602 based on Foata normal form. 8/13148 useless extension candidates. Maximal degree in co-relation 37252. Up to 12846 conditions per place. [2024-06-28 03:33:36,568 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 80 selfloop transitions, 20 changer transitions 0/107 dead transitions. [2024-06-28 03:33:36,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 107 transitions, 594 flow [2024-06-28 03:33:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:33:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:33:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-06-28 03:33:36,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658263305322129 [2024-06-28 03:33:36,570 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 254 flow. Second operand 7 states and 202 transitions. [2024-06-28 03:33:36,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 107 transitions, 594 flow [2024-06-28 03:33:36,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 107 transitions, 555 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:33:36,575 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 287 flow [2024-06-28 03:33:36,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=287, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-28 03:33:36,576 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-06-28 03:33:36,576 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 287 flow [2024-06-28 03:33:36,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 03:33:36,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:36,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:36,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:33:36,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:36,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:36,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1884147086, now seen corresponding path program 1 times [2024-06-28 03:33:36,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:36,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554999542] [2024-06-28 03:33:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:36,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:37,183 INFO 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 03:33:37,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:37,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554999542] [2024-06-28 03:33:37,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554999542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:37,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:37,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:33:37,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006927654] [2024-06-28 03:33:37,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:37,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:33:37,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:37,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:33:37,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:33:37,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:33:37,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 287 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:37,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:37,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:33:37,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:38,439 INFO L124 PetriNetUnfolderBase]: 9523/13167 cut-off events. [2024-06-28 03:33:38,439 INFO L125 PetriNetUnfolderBase]: For 22227/22227 co-relation queries the response was YES. [2024-06-28 03:33:38,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39998 conditions, 13167 events. 9523/13167 cut-off events. For 22227/22227 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 70093 event pairs, 4907 based on Foata normal form. 6/13170 useless extension candidates. Maximal degree in co-relation 39980. Up to 12897 conditions per place. [2024-06-28 03:33:38,509 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 65 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-06-28 03:33:38,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 509 flow [2024-06-28 03:33:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:33:38,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:33:38,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-28 03:33:38,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2024-06-28 03:33:38,511 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 287 flow. Second operand 5 states and 123 transitions. [2024-06-28 03:33:38,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 509 flow [2024-06-28 03:33:38,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 81 transitions, 455 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:33:38,517 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 298 flow [2024-06-28 03:33:38,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2024-06-28 03:33:38,521 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-06-28 03:33:38,521 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 298 flow [2024-06-28 03:33:38,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:38,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:38,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:38,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:33:38,522 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:38,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:38,522 INFO L85 PathProgramCache]: Analyzing trace with hash -151020639, now seen corresponding path program 1 times [2024-06-28 03:33:38,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:38,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687935840] [2024-06-28 03:33:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:38,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:39,363 INFO 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 03:33:39,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:39,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687935840] [2024-06-28 03:33:39,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687935840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:39,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:39,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:33:39,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977331714] [2024-06-28 03:33:39,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:39,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:33:39,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:33:39,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:33:39,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:33:39,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 298 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:33:39,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:39,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:33:39,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:40,580 INFO L124 PetriNetUnfolderBase]: 9598/13262 cut-off events. [2024-06-28 03:33:40,581 INFO L125 PetriNetUnfolderBase]: For 31479/31479 co-relation queries the response was YES. [2024-06-28 03:33:40,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43575 conditions, 13262 events. 9598/13262 cut-off events. For 31479/31479 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 70566 event pairs, 4669 based on Foata normal form. 6/13263 useless extension candidates. Maximal degree in co-relation 43555. Up to 12924 conditions per place. [2024-06-28 03:33:40,665 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 80 selfloop transitions, 21 changer transitions 0/107 dead transitions. [2024-06-28 03:33:40,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 107 transitions, 709 flow [2024-06-28 03:33:40,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:33:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:33:40,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-06-28 03:33:40,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065359477124183 [2024-06-28 03:33:40,667 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 298 flow. Second operand 6 states and 155 transitions. [2024-06-28 03:33:40,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 107 transitions, 709 flow [2024-06-28 03:33:40,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 107 transitions, 655 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 03:33:40,673 INFO L231 Difference]: Finished difference. Result has 68 places, 75 transitions, 420 flow [2024-06-28 03:33:40,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=420, PETRI_PLACES=68, PETRI_TRANSITIONS=75} [2024-06-28 03:33:40,674 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-06-28 03:33:40,674 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 75 transitions, 420 flow [2024-06-28 03:33:40,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:33:40,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:40,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:40,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:33:40,675 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:40,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:40,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1166465181, now seen corresponding path program 2 times [2024-06-28 03:33:40,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:40,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809383400] [2024-06-28 03:33:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:40,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:41,463 INFO 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 03:33:41,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:41,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809383400] [2024-06-28 03:33:41,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809383400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:41,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:41,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:33:41,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104942459] [2024-06-28 03:33:41,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:41,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:33:41,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:41,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:33:41,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:33:41,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:33:41,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 75 transitions, 420 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:33:41,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:41,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:33:41,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:42,666 INFO L124 PetriNetUnfolderBase]: 9580/13243 cut-off events. [2024-06-28 03:33:42,666 INFO L125 PetriNetUnfolderBase]: For 43724/43724 co-relation queries the response was YES. [2024-06-28 03:33:42,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47546 conditions, 13243 events. 9580/13243 cut-off events. For 43724/43724 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 70466 event pairs, 4762 based on Foata normal form. 6/13246 useless extension candidates. Maximal degree in co-relation 47524. Up to 12960 conditions per place. [2024-06-28 03:33:42,739 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 79 selfloop transitions, 16 changer transitions 0/101 dead transitions. [2024-06-28 03:33:42,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 101 transitions, 686 flow [2024-06-28 03:33:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:33:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:33:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 03:33:42,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44537815126050423 [2024-06-28 03:33:42,742 INFO L175 Difference]: Start difference. First operand has 68 places, 75 transitions, 420 flow. Second operand 7 states and 159 transitions. [2024-06-28 03:33:42,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 101 transitions, 686 flow [2024-06-28 03:33:42,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 101 transitions, 640 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-28 03:33:42,764 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 434 flow [2024-06-28 03:33:42,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=434, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-06-28 03:33:42,764 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-28 03:33:42,764 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 434 flow [2024-06-28 03:33:42,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 03:33:42,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:42,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:42,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:33:42,765 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:42,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:42,766 INFO L85 PathProgramCache]: Analyzing trace with hash 125598203, now seen corresponding path program 1 times [2024-06-28 03:33:42,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:42,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269192119] [2024-06-28 03:33:42,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:42,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:43,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:43,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269192119] [2024-06-28 03:33:43,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269192119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:43,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:43,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:33:43,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587725798] [2024-06-28 03:33:43,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:43,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:33:43,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:43,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:33:43,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:33:43,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:33:43,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 434 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 03:33:43,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:43,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:33:43,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:45,071 INFO L124 PetriNetUnfolderBase]: 9624/13280 cut-off events. [2024-06-28 03:33:45,071 INFO L125 PetriNetUnfolderBase]: For 49768/49768 co-relation queries the response was YES. [2024-06-28 03:33:45,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48260 conditions, 13280 events. 9624/13280 cut-off events. For 49768/49768 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 70475 event pairs, 4668 based on Foata normal form. 6/13283 useless extension candidates. Maximal degree in co-relation 48234. Up to 12993 conditions per place. [2024-06-28 03:33:45,168 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 93 selfloop transitions, 19 changer transitions 0/118 dead transitions. [2024-06-28 03:33:45,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 118 transitions, 798 flow [2024-06-28 03:33:45,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:33:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:33:45,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 03:33:45,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-06-28 03:33:45,170 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 434 flow. Second operand 7 states and 175 transitions. [2024-06-28 03:33:45,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 118 transitions, 798 flow [2024-06-28 03:33:45,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 118 transitions, 746 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:33:45,194 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 477 flow [2024-06-28 03:33:45,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2024-06-28 03:33:45,196 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-28 03:33:45,196 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 477 flow [2024-06-28 03:33:45,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 03:33:45,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:45,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:45,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:33:45,197 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:45,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:45,198 INFO L85 PathProgramCache]: Analyzing trace with hash 125718173, now seen corresponding path program 2 times [2024-06-28 03:33:45,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:45,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478675890] [2024-06-28 03:33:45,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:45,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:46,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:46,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478675890] [2024-06-28 03:33:46,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478675890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:46,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:46,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:33:46,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350021850] [2024-06-28 03:33:46,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:46,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:33:46,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:33:46,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:33:46,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:33:46,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 477 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 03:33:46,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:46,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:33:46,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:47,483 INFO L124 PetriNetUnfolderBase]: 9699/13382 cut-off events. [2024-06-28 03:33:47,483 INFO L125 PetriNetUnfolderBase]: For 64149/64149 co-relation queries the response was YES. [2024-06-28 03:33:47,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52099 conditions, 13382 events. 9699/13382 cut-off events. For 64149/64149 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 70869 event pairs, 4479 based on Foata normal form. 6/13383 useless extension candidates. Maximal degree in co-relation 52074. Up to 12935 conditions per place. [2024-06-28 03:33:47,580 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 86 selfloop transitions, 36 changer transitions 0/128 dead transitions. [2024-06-28 03:33:47,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 128 transitions, 967 flow [2024-06-28 03:33:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:33:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:33:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-06-28 03:33:47,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070028011204482 [2024-06-28 03:33:47,582 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 477 flow. Second operand 7 states and 181 transitions. [2024-06-28 03:33:47,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 128 transitions, 967 flow [2024-06-28 03:33:47,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 128 transitions, 904 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:33:47,604 INFO L231 Difference]: Finished difference. Result has 78 places, 89 transitions, 597 flow [2024-06-28 03:33:47,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=597, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2024-06-28 03:33:47,605 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-28 03:33:47,605 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 597 flow [2024-06-28 03:33:47,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 03:33:47,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:47,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:47,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:33:47,606 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:47,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:47,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1800681077, now seen corresponding path program 3 times [2024-06-28 03:33:47,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:47,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221270464] [2024-06-28 03:33:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:47,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:48,425 INFO 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 03:33:48,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:48,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221270464] [2024-06-28 03:33:48,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221270464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:48,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:48,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:33:48,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343958857] [2024-06-28 03:33:48,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:48,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:33:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:48,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:33:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:33:48,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:33:48,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 597 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 03:33:48,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:48,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:33:48,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:49,970 INFO L124 PetriNetUnfolderBase]: 9681/13363 cut-off events. [2024-06-28 03:33:49,971 INFO L125 PetriNetUnfolderBase]: For 81729/81729 co-relation queries the response was YES. [2024-06-28 03:33:49,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55294 conditions, 13363 events. 9681/13363 cut-off events. For 81729/81729 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 70865 event pairs, 4675 based on Foata normal form. 6/13366 useless extension candidates. Maximal degree in co-relation 55268. Up to 13060 conditions per place. [2024-06-28 03:33:50,040 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 96 selfloop transitions, 19 changer transitions 0/121 dead transitions. [2024-06-28 03:33:50,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 121 transitions, 913 flow [2024-06-28 03:33:50,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:33:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:33:50,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 03:33:50,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 03:33:50,042 INFO L175 Difference]: Start difference. First operand has 78 places, 89 transitions, 597 flow. Second operand 7 states and 170 transitions. [2024-06-28 03:33:50,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 121 transitions, 913 flow [2024-06-28 03:33:50,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 121 transitions, 828 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 03:33:50,072 INFO L231 Difference]: Finished difference. Result has 82 places, 89 transitions, 561 flow [2024-06-28 03:33:50,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=561, PETRI_PLACES=82, PETRI_TRANSITIONS=89} [2024-06-28 03:33:50,073 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-06-28 03:33:50,075 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 89 transitions, 561 flow [2024-06-28 03:33:50,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 03:33:50,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:50,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:50,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:33:50,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:50,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:50,076 INFO L85 PathProgramCache]: Analyzing trace with hash 303095957, now seen corresponding path program 1 times [2024-06-28 03:33:50,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:50,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247964984] [2024-06-28 03:33:50,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:50,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:51,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:51,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:51,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247964984] [2024-06-28 03:33:51,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247964984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:51,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:51,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:51,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889957228] [2024-06-28 03:33:51,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:51,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:51,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:51,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:51,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:33:51,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 89 transitions, 561 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:51,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:51,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:33:51,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:53,129 INFO L124 PetriNetUnfolderBase]: 11757/16149 cut-off events. [2024-06-28 03:33:53,130 INFO L125 PetriNetUnfolderBase]: For 108270/108270 co-relation queries the response was YES. [2024-06-28 03:33:53,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66393 conditions, 16149 events. 11757/16149 cut-off events. For 108270/108270 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 85650 event pairs, 5699 based on Foata normal form. 6/16152 useless extension candidates. Maximal degree in co-relation 66365. Up to 15837 conditions per place. [2024-06-28 03:33:53,255 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 101 selfloop transitions, 21 changer transitions 0/127 dead transitions. [2024-06-28 03:33:53,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 960 flow [2024-06-28 03:33:53,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:33:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:33:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 03:33:53,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4565826330532213 [2024-06-28 03:33:53,257 INFO L175 Difference]: Start difference. First operand has 82 places, 89 transitions, 561 flow. Second operand 7 states and 163 transitions. [2024-06-28 03:33:53,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 960 flow [2024-06-28 03:33:53,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 127 transitions, 891 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:33:53,306 INFO L231 Difference]: Finished difference. Result has 84 places, 96 transitions, 632 flow [2024-06-28 03:33:53,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=632, PETRI_PLACES=84, PETRI_TRANSITIONS=96} [2024-06-28 03:33:53,307 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2024-06-28 03:33:53,307 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 96 transitions, 632 flow [2024-06-28 03:33:53,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:53,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:53,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:53,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:33:53,308 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:53,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:53,308 INFO L85 PathProgramCache]: Analyzing trace with hash -476948626, now seen corresponding path program 1 times [2024-06-28 03:33:53,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:53,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155817490] [2024-06-28 03:33:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:53,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:53,907 INFO 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 03:33:53,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:53,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155817490] [2024-06-28 03:33:53,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155817490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:53,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:53,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:33:53,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89512869] [2024-06-28 03:33:53,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:53,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:33:53,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:53,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:33:53,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:33:53,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:33:53,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 96 transitions, 632 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 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 03:33:53,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:53,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:33:53,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:55,645 INFO L124 PetriNetUnfolderBase]: 11135/15462 cut-off events. [2024-06-28 03:33:55,646 INFO L125 PetriNetUnfolderBase]: For 125278/125284 co-relation queries the response was YES. [2024-06-28 03:33:55,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67772 conditions, 15462 events. 11135/15462 cut-off events. For 125278/125284 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 83401 event pairs, 5731 based on Foata normal form. 10/15448 useless extension candidates. Maximal degree in co-relation 67742. Up to 15072 conditions per place. [2024-06-28 03:33:55,790 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 94 selfloop transitions, 11 changer transitions 0/114 dead transitions. [2024-06-28 03:33:55,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 114 transitions, 918 flow [2024-06-28 03:33:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:33:55,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:33:55,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 03:33:55,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 03:33:55,792 INFO L175 Difference]: Start difference. First operand has 84 places, 96 transitions, 632 flow. Second operand 5 states and 119 transitions. [2024-06-28 03:33:55,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 114 transitions, 918 flow [2024-06-28 03:33:55,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 114 transitions, 846 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 03:33:55,857 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 639 flow [2024-06-28 03:33:55,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=639, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2024-06-28 03:33:55,859 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-28 03:33:55,859 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 639 flow [2024-06-28 03:33:55,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 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 03:33:55,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:55,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:55,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:33:55,860 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:55,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash 894282048, now seen corresponding path program 1 times [2024-06-28 03:33:55,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:55,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647500710] [2024-06-28 03:33:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:55,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:56,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:56,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647500710] [2024-06-28 03:33:56,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647500710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:56,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:56,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:33:56,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106158491] [2024-06-28 03:33:56,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:56,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:33:56,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:56,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:33:56,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:33:57,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:33:57,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 639 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:57,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:57,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:33:57,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:58,696 INFO L124 PetriNetUnfolderBase]: 11568/15912 cut-off events. [2024-06-28 03:33:58,696 INFO L125 PetriNetUnfolderBase]: For 145889/145889 co-relation queries the response was YES. [2024-06-28 03:33:58,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72802 conditions, 15912 events. 11568/15912 cut-off events. For 145889/145889 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 85635 event pairs, 5236 based on Foata normal form. 6/15915 useless extension candidates. Maximal degree in co-relation 72771. Up to 15533 conditions per place. [2024-06-28 03:33:58,834 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 125 selfloop transitions, 27 changer transitions 0/159 dead transitions. [2024-06-28 03:33:58,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 159 transitions, 1151 flow [2024-06-28 03:33:58,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:33:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:33:58,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 03:33:58,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2024-06-28 03:33:58,849 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 639 flow. Second operand 9 states and 225 transitions. [2024-06-28 03:33:58,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 159 transitions, 1151 flow [2024-06-28 03:33:58,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 159 transitions, 1102 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 03:33:58,914 INFO L231 Difference]: Finished difference. Result has 91 places, 104 transitions, 720 flow [2024-06-28 03:33:58,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=720, PETRI_PLACES=91, PETRI_TRANSITIONS=104} [2024-06-28 03:33:58,915 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2024-06-28 03:33:58,915 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 104 transitions, 720 flow [2024-06-28 03:33:58,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:58,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:58,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:58,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:33:58,916 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:58,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash 898091328, now seen corresponding path program 2 times [2024-06-28 03:33:58,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:58,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705827199] [2024-06-28 03:33:58,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:58,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:00,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:00,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:00,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705827199] [2024-06-28 03:34:00,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705827199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:00,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:00,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:00,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677027879] [2024-06-28 03:34:00,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:00,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:00,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:00,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:00,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:00,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 104 transitions, 720 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:00,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:00,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:00,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:01,948 INFO L124 PetriNetUnfolderBase]: 11601/15986 cut-off events. [2024-06-28 03:34:01,948 INFO L125 PetriNetUnfolderBase]: For 169958/169958 co-relation queries the response was YES. [2024-06-28 03:34:02,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76944 conditions, 15986 events. 11601/15986 cut-off events. For 169958/169958 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 86175 event pairs, 4920 based on Foata normal form. 6/15985 useless extension candidates. Maximal degree in co-relation 76912. Up to 15376 conditions per place. [2024-06-28 03:34:02,090 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 109 selfloop transitions, 51 changer transitions 0/167 dead transitions. [2024-06-28 03:34:02,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 167 transitions, 1396 flow [2024-06-28 03:34:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:02,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 03:34:02,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49673202614379086 [2024-06-28 03:34:02,108 INFO L175 Difference]: Start difference. First operand has 91 places, 104 transitions, 720 flow. Second operand 9 states and 228 transitions. [2024-06-28 03:34:02,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 167 transitions, 1396 flow [2024-06-28 03:34:02,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 167 transitions, 1300 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 03:34:02,178 INFO L231 Difference]: Finished difference. Result has 94 places, 112 transitions, 900 flow [2024-06-28 03:34:02,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=900, PETRI_PLACES=94, PETRI_TRANSITIONS=112} [2024-06-28 03:34:02,179 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-06-28 03:34:02,179 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 112 transitions, 900 flow [2024-06-28 03:34:02,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:02,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:02,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:02,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:34:02,180 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:02,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1094547340, now seen corresponding path program 1 times [2024-06-28 03:34:02,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:02,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643081619] [2024-06-28 03:34:02,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:02,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:03,164 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 03:34:03,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:03,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643081619] [2024-06-28 03:34:03,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643081619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:03,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:03,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:03,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674294362] [2024-06-28 03:34:03,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:03,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:03,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:03,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:03,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:03,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 112 transitions, 900 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:03,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:03,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:03,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:04,933 INFO L124 PetriNetUnfolderBase]: 11910/16346 cut-off events. [2024-06-28 03:34:04,934 INFO L125 PetriNetUnfolderBase]: For 203181/203181 co-relation queries the response was YES. [2024-06-28 03:34:05,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83121 conditions, 16346 events. 11910/16346 cut-off events. For 203181/203181 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 85959 event pairs, 5606 based on Foata normal form. 3/16346 useless extension candidates. Maximal degree in co-relation 83087. Up to 16032 conditions per place. [2024-06-28 03:34:05,105 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 120 selfloop transitions, 26 changer transitions 0/151 dead transitions. [2024-06-28 03:34:05,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 151 transitions, 1379 flow [2024-06-28 03:34:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 03:34:05,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45938375350140054 [2024-06-28 03:34:05,108 INFO L175 Difference]: Start difference. First operand has 94 places, 112 transitions, 900 flow. Second operand 7 states and 164 transitions. [2024-06-28 03:34:05,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 151 transitions, 1379 flow [2024-06-28 03:34:05,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 151 transitions, 1288 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 03:34:05,238 INFO L231 Difference]: Finished difference. Result has 97 places, 120 transitions, 998 flow [2024-06-28 03:34:05,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=998, PETRI_PLACES=97, PETRI_TRANSITIONS=120} [2024-06-28 03:34:05,239 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-28 03:34:05,239 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 120 transitions, 998 flow [2024-06-28 03:34:05,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:05,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:05,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:05,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:34:05,240 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:05,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1487807508, now seen corresponding path program 3 times [2024-06-28 03:34:05,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:05,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951315340] [2024-06-28 03:34:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:05,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:06,125 INFO 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 03:34:06,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:06,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951315340] [2024-06-28 03:34:06,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951315340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:06,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:06,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:06,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238908473] [2024-06-28 03:34:06,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:06,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:06,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:06,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:06,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:06,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:06,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 120 transitions, 998 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:06,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:06,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:06,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:07,948 INFO L124 PetriNetUnfolderBase]: 11603/15975 cut-off events. [2024-06-28 03:34:07,948 INFO L125 PetriNetUnfolderBase]: For 219065/219065 co-relation queries the response was YES. [2024-06-28 03:34:08,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83201 conditions, 15975 events. 11603/15975 cut-off events. For 219065/219065 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 86268 event pairs, 5079 based on Foata normal form. 9/15981 useless extension candidates. Maximal degree in co-relation 83165. Up to 15460 conditions per place. [2024-06-28 03:34:08,086 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 119 selfloop transitions, 41 changer transitions 0/167 dead transitions. [2024-06-28 03:34:08,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 167 transitions, 1592 flow [2024-06-28 03:34:08,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:08,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:08,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 03:34:08,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852941176470588 [2024-06-28 03:34:08,088 INFO L175 Difference]: Start difference. First operand has 97 places, 120 transitions, 998 flow. Second operand 8 states and 198 transitions. [2024-06-28 03:34:08,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 167 transitions, 1592 flow [2024-06-28 03:34:08,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 167 transitions, 1510 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:08,196 INFO L231 Difference]: Finished difference. Result has 100 places, 124 transitions, 1090 flow [2024-06-28 03:34:08,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1090, PETRI_PLACES=100, PETRI_TRANSITIONS=124} [2024-06-28 03:34:08,196 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 46 predicate places. [2024-06-28 03:34:08,197 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 124 transitions, 1090 flow [2024-06-28 03:34:08,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:08,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:08,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:08,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:34:08,197 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:08,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:08,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1284386062, now seen corresponding path program 1 times [2024-06-28 03:34:08,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:08,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656917648] [2024-06-28 03:34:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:08,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:09,446 INFO 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 03:34:09,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:09,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656917648] [2024-06-28 03:34:09,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656917648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:09,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:09,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:09,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94741794] [2024-06-28 03:34:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:09,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:09,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:09,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:09,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:09,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 124 transitions, 1090 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:09,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:09,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:09,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:11,521 INFO L124 PetriNetUnfolderBase]: 12066/16636 cut-off events. [2024-06-28 03:34:11,522 INFO L125 PetriNetUnfolderBase]: For 269899/269899 co-relation queries the response was YES. [2024-06-28 03:34:11,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91990 conditions, 16636 events. 12066/16636 cut-off events. For 269899/269899 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 90951 event pairs, 4506 based on Foata normal form. 24/16657 useless extension candidates. Maximal degree in co-relation 91953. Up to 15744 conditions per place. [2024-06-28 03:34:11,685 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 163 selfloop transitions, 33 changer transitions 0/203 dead transitions. [2024-06-28 03:34:11,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 203 transitions, 1928 flow [2024-06-28 03:34:11,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:34:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:34:11,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-28 03:34:11,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078431372549019 [2024-06-28 03:34:11,687 INFO L175 Difference]: Start difference. First operand has 100 places, 124 transitions, 1090 flow. Second operand 10 states and 259 transitions. [2024-06-28 03:34:11,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 203 transitions, 1928 flow [2024-06-28 03:34:11,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 203 transitions, 1764 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:11,843 INFO L231 Difference]: Finished difference. Result has 104 places, 128 transitions, 1113 flow [2024-06-28 03:34:11,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1113, PETRI_PLACES=104, PETRI_TRANSITIONS=128} [2024-06-28 03:34:11,844 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-06-28 03:34:11,844 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 128 transitions, 1113 flow [2024-06-28 03:34:11,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:11,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:11,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:11,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:34:11,845 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:11,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:11,845 INFO L85 PathProgramCache]: Analyzing trace with hash 438030620, now seen corresponding path program 2 times [2024-06-28 03:34:11,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:11,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347765164] [2024-06-28 03:34:11,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:11,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:13,180 INFO 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 03:34:13,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:13,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347765164] [2024-06-28 03:34:13,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347765164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:13,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:13,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:13,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101850659] [2024-06-28 03:34:13,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:13,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:13,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:13,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:13,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:13,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:13,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 128 transitions, 1113 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:13,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:13,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:13,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:15,491 INFO L124 PetriNetUnfolderBase]: 12274/16986 cut-off events. [2024-06-28 03:34:15,491 INFO L125 PetriNetUnfolderBase]: For 307651/307651 co-relation queries the response was YES. [2024-06-28 03:34:15,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96006 conditions, 16986 events. 12274/16986 cut-off events. For 307651/307651 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 93453 event pairs, 5117 based on Foata normal form. 30/17013 useless extension candidates. Maximal degree in co-relation 95968. Up to 16350 conditions per place. [2024-06-28 03:34:15,649 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 162 selfloop transitions, 33 changer transitions 0/202 dead transitions. [2024-06-28 03:34:15,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 202 transitions, 1793 flow [2024-06-28 03:34:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:34:15,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:34:15,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-28 03:34:15,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49607843137254903 [2024-06-28 03:34:15,651 INFO L175 Difference]: Start difference. First operand has 104 places, 128 transitions, 1113 flow. Second operand 10 states and 253 transitions. [2024-06-28 03:34:15,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 202 transitions, 1793 flow [2024-06-28 03:34:15,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 202 transitions, 1734 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:15,807 INFO L231 Difference]: Finished difference. Result has 108 places, 134 transitions, 1216 flow [2024-06-28 03:34:15,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1216, PETRI_PLACES=108, PETRI_TRANSITIONS=134} [2024-06-28 03:34:15,808 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2024-06-28 03:34:15,808 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 134 transitions, 1216 flow [2024-06-28 03:34:15,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:15,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:15,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:15,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:34:15,809 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:15,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1284504172, now seen corresponding path program 3 times [2024-06-28 03:34:15,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:15,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930935705] [2024-06-28 03:34:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:15,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:17,097 INFO 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 03:34:17,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:17,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930935705] [2024-06-28 03:34:17,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930935705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:17,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:17,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:17,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276371034] [2024-06-28 03:34:17,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:17,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:17,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:17,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:17,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:17,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 134 transitions, 1216 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:17,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:17,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:17,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:19,458 INFO L124 PetriNetUnfolderBase]: 12190/16889 cut-off events. [2024-06-28 03:34:19,458 INFO L125 PetriNetUnfolderBase]: For 324022/324022 co-relation queries the response was YES. [2024-06-28 03:34:19,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95939 conditions, 16889 events. 12190/16889 cut-off events. For 324022/324022 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 92996 event pairs, 5007 based on Foata normal form. 36/16922 useless extension candidates. Maximal degree in co-relation 95899. Up to 16235 conditions per place. [2024-06-28 03:34:19,575 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 160 selfloop transitions, 25 changer transitions 0/192 dead transitions. [2024-06-28 03:34:19,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 192 transitions, 1772 flow [2024-06-28 03:34:19,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:19,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:19,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-28 03:34:19,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4923747276688453 [2024-06-28 03:34:19,577 INFO L175 Difference]: Start difference. First operand has 108 places, 134 transitions, 1216 flow. Second operand 9 states and 226 transitions. [2024-06-28 03:34:19,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 192 transitions, 1772 flow [2024-06-28 03:34:19,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 192 transitions, 1697 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:19,728 INFO L231 Difference]: Finished difference. Result has 111 places, 134 transitions, 1202 flow [2024-06-28 03:34:19,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1202, PETRI_PLACES=111, PETRI_TRANSITIONS=134} [2024-06-28 03:34:19,729 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-28 03:34:19,729 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 134 transitions, 1202 flow [2024-06-28 03:34:19,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:19,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:19,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:19,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:34:19,730 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:19,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:19,730 INFO L85 PathProgramCache]: Analyzing trace with hash 556302998, now seen corresponding path program 1 times [2024-06-28 03:34:19,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:19,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310380492] [2024-06-28 03:34:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:19,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:21,046 INFO 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 03:34:21,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:21,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310380492] [2024-06-28 03:34:21,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310380492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:21,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:21,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:21,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075437931] [2024-06-28 03:34:21,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:21,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:21,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:21,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:21,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:21,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:21,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 134 transitions, 1202 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:21,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:21,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:21,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:23,049 INFO L124 PetriNetUnfolderBase]: 12591/17395 cut-off events. [2024-06-28 03:34:23,049 INFO L125 PetriNetUnfolderBase]: For 343204/343209 co-relation queries the response was YES. [2024-06-28 03:34:23,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99089 conditions, 17395 events. 12591/17395 cut-off events. For 343204/343209 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 93708 event pairs, 5221 based on Foata normal form. 8/17398 useless extension candidates. Maximal degree in co-relation 99048. Up to 16924 conditions per place. [2024-06-28 03:34:23,174 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 144 selfloop transitions, 36 changer transitions 0/185 dead transitions. [2024-06-28 03:34:23,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 185 transitions, 1771 flow [2024-06-28 03:34:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 03:34:23,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730392156862745 [2024-06-28 03:34:23,176 INFO L175 Difference]: Start difference. First operand has 111 places, 134 transitions, 1202 flow. Second operand 8 states and 193 transitions. [2024-06-28 03:34:23,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 185 transitions, 1771 flow [2024-06-28 03:34:23,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 185 transitions, 1690 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:34:23,324 INFO L231 Difference]: Finished difference. Result has 111 places, 141 transitions, 1305 flow [2024-06-28 03:34:23,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1305, PETRI_PLACES=111, PETRI_TRANSITIONS=141} [2024-06-28 03:34:23,324 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 57 predicate places. [2024-06-28 03:34:23,325 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 141 transitions, 1305 flow [2024-06-28 03:34:23,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:23,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:23,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:23,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:34:23,325 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:23,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:23,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2071028620, now seen corresponding path program 4 times [2024-06-28 03:34:23,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:23,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365938412] [2024-06-28 03:34:23,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:23,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:24,466 INFO 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 03:34:24,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:24,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365938412] [2024-06-28 03:34:24,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365938412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:24,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:24,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:24,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127738716] [2024-06-28 03:34:24,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:24,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:24,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:24,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:24,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:24,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:24,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 141 transitions, 1305 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:24,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:24,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:24,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:26,628 INFO L124 PetriNetUnfolderBase]: 12365/17219 cut-off events. [2024-06-28 03:34:26,628 INFO L125 PetriNetUnfolderBase]: For 386659/386665 co-relation queries the response was YES. [2024-06-28 03:34:26,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101984 conditions, 17219 events. 12365/17219 cut-off events. For 386659/386665 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 95825 event pairs, 4672 based on Foata normal form. 40/17238 useless extension candidates. Maximal degree in co-relation 101941. Up to 16249 conditions per place. [2024-06-28 03:34:26,771 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 133 selfloop transitions, 61 changer transitions 0/202 dead transitions. [2024-06-28 03:34:26,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 202 transitions, 2053 flow [2024-06-28 03:34:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 03:34:26,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054466230936819 [2024-06-28 03:34:26,773 INFO L175 Difference]: Start difference. First operand has 111 places, 141 transitions, 1305 flow. Second operand 9 states and 232 transitions. [2024-06-28 03:34:26,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 202 transitions, 2053 flow [2024-06-28 03:34:26,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 202 transitions, 1927 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:26,934 INFO L231 Difference]: Finished difference. Result has 115 places, 143 transitions, 1377 flow [2024-06-28 03:34:26,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1377, PETRI_PLACES=115, PETRI_TRANSITIONS=143} [2024-06-28 03:34:26,935 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-06-28 03:34:26,935 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 143 transitions, 1377 flow [2024-06-28 03:34:26,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:26,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:26,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:26,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:34:26,936 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:26,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1202493005, now seen corresponding path program 1 times [2024-06-28 03:34:26,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:26,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883858489] [2024-06-28 03:34:26,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:26,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:27,738 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 03:34:27,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:27,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883858489] [2024-06-28 03:34:27,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883858489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:27,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:27,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:27,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598363060] [2024-06-28 03:34:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:27,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:27,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:27,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:27,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:27,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:27,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 143 transitions, 1377 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:27,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:27,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:27,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:30,217 INFO L124 PetriNetUnfolderBase]: 12423/17373 cut-off events. [2024-06-28 03:34:30,218 INFO L125 PetriNetUnfolderBase]: For 425043/425093 co-relation queries the response was YES. [2024-06-28 03:34:30,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105950 conditions, 17373 events. 12423/17373 cut-off events. For 425043/425093 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 96289 event pairs, 5352 based on Foata normal form. 14/17361 useless extension candidates. Maximal degree in co-relation 105906. Up to 16752 conditions per place. [2024-06-28 03:34:30,378 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 148 selfloop transitions, 26 changer transitions 0/187 dead transitions. [2024-06-28 03:34:30,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 187 transitions, 2080 flow [2024-06-28 03:34:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:30,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 03:34:30,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-06-28 03:34:30,380 INFO L175 Difference]: Start difference. First operand has 115 places, 143 transitions, 1377 flow. Second operand 7 states and 161 transitions. [2024-06-28 03:34:30,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 187 transitions, 2080 flow [2024-06-28 03:34:30,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 187 transitions, 1922 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 03:34:30,625 INFO L231 Difference]: Finished difference. Result has 117 places, 162 transitions, 1539 flow [2024-06-28 03:34:30,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1539, PETRI_PLACES=117, PETRI_TRANSITIONS=162} [2024-06-28 03:34:30,626 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-28 03:34:30,626 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 162 transitions, 1539 flow [2024-06-28 03:34:30,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:30,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:30,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:30,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:34:30,627 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:30,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:30,627 INFO L85 PathProgramCache]: Analyzing trace with hash -791096972, now seen corresponding path program 2 times [2024-06-28 03:34:30,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:30,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746232343] [2024-06-28 03:34:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:30,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:31,943 INFO 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 03:34:31,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:31,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746232343] [2024-06-28 03:34:31,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746232343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:31,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:31,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:31,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710063399] [2024-06-28 03:34:31,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:31,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:31,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:31,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:31,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:32,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:32,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 162 transitions, 1539 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:32,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:32,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:32,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:34,461 INFO L124 PetriNetUnfolderBase]: 13029/18023 cut-off events. [2024-06-28 03:34:34,462 INFO L125 PetriNetUnfolderBase]: For 458404/458404 co-relation queries the response was YES. [2024-06-28 03:34:34,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113202 conditions, 18023 events. 13029/18023 cut-off events. For 458404/458404 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 97227 event pairs, 5373 based on Foata normal form. 6/18024 useless extension candidates. Maximal degree in co-relation 113155. Up to 17651 conditions per place. [2024-06-28 03:34:34,603 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 177 selfloop transitions, 22 changer transitions 0/204 dead transitions. [2024-06-28 03:34:34,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 204 transitions, 2115 flow [2024-06-28 03:34:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:34,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:34,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 03:34:34,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-06-28 03:34:34,605 INFO L175 Difference]: Start difference. First operand has 117 places, 162 transitions, 1539 flow. Second operand 8 states and 185 transitions. [2024-06-28 03:34:34,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 204 transitions, 2115 flow [2024-06-28 03:34:34,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 204 transitions, 2062 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 03:34:34,872 INFO L231 Difference]: Finished difference. Result has 123 places, 165 transitions, 1622 flow [2024-06-28 03:34:34,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1622, PETRI_PLACES=123, PETRI_TRANSITIONS=165} [2024-06-28 03:34:34,873 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 69 predicate places. [2024-06-28 03:34:34,873 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 165 transitions, 1622 flow [2024-06-28 03:34:34,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:34,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:34,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:34,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:34:34,874 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:34,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:34,875 INFO L85 PathProgramCache]: Analyzing trace with hash -782526092, now seen corresponding path program 3 times [2024-06-28 03:34:34,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:34,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796578604] [2024-06-28 03:34:34,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:34,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:36,188 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 03:34:36,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:36,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796578604] [2024-06-28 03:34:36,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796578604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:36,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:36,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:36,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122607184] [2024-06-28 03:34:36,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:36,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:36,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:36,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:36,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:36,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:36,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 165 transitions, 1622 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:36,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:36,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:36,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:38,844 INFO L124 PetriNetUnfolderBase]: 13065/18075 cut-off events. [2024-06-28 03:34:38,845 INFO L125 PetriNetUnfolderBase]: For 501526/501526 co-relation queries the response was YES. [2024-06-28 03:34:38,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116553 conditions, 18075 events. 13065/18075 cut-off events. For 501526/501526 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 97457 event pairs, 5270 based on Foata normal form. 6/18076 useless extension candidates. Maximal degree in co-relation 116504. Up to 17680 conditions per place. [2024-06-28 03:34:38,977 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 178 selfloop transitions, 24 changer transitions 0/207 dead transitions. [2024-06-28 03:34:38,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 207 transitions, 2208 flow [2024-06-28 03:34:38,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:38,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:38,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 03:34:38,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-06-28 03:34:38,979 INFO L175 Difference]: Start difference. First operand has 123 places, 165 transitions, 1622 flow. Second operand 8 states and 185 transitions. [2024-06-28 03:34:38,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 207 transitions, 2208 flow [2024-06-28 03:34:39,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 207 transitions, 2092 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:39,246 INFO L231 Difference]: Finished difference. Result has 125 places, 168 transitions, 1652 flow [2024-06-28 03:34:39,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1652, PETRI_PLACES=125, PETRI_TRANSITIONS=168} [2024-06-28 03:34:39,247 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-28 03:34:39,247 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 168 transitions, 1652 flow [2024-06-28 03:34:39,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:39,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:39,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:39,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:34:39,248 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:39,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash -2051628342, now seen corresponding path program 1 times [2024-06-28 03:34:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:39,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337945594] [2024-06-28 03:34:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:39,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:40,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:40,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337945594] [2024-06-28 03:34:40,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337945594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:40,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:40,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:40,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601644952] [2024-06-28 03:34:40,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:40,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:40,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:40,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:40,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:40,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:40,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 168 transitions, 1652 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:40,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:40,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:40,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:43,219 INFO L124 PetriNetUnfolderBase]: 13094/18076 cut-off events. [2024-06-28 03:34:43,220 INFO L125 PetriNetUnfolderBase]: For 547471/547471 co-relation queries the response was YES. [2024-06-28 03:34:43,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119435 conditions, 18076 events. 13094/18076 cut-off events. For 547471/547471 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 97080 event pairs, 5446 based on Foata normal form. 3/18074 useless extension candidates. Maximal degree in co-relation 119385. Up to 17689 conditions per place. [2024-06-28 03:34:43,459 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 172 selfloop transitions, 34 changer transitions 0/211 dead transitions. [2024-06-28 03:34:43,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 211 transitions, 2202 flow [2024-06-28 03:34:43,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 03:34:43,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 03:34:43,461 INFO L175 Difference]: Start difference. First operand has 125 places, 168 transitions, 1652 flow. Second operand 8 states and 187 transitions. [2024-06-28 03:34:43,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 211 transitions, 2202 flow [2024-06-28 03:34:43,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 211 transitions, 2032 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:43,797 INFO L231 Difference]: Finished difference. Result has 127 places, 172 transitions, 1608 flow [2024-06-28 03:34:43,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1608, PETRI_PLACES=127, PETRI_TRANSITIONS=172} [2024-06-28 03:34:43,802 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-28 03:34:43,803 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 172 transitions, 1608 flow [2024-06-28 03:34:43,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:43,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:43,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:43,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:34:43,804 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:43,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1019182820, now seen corresponding path program 5 times [2024-06-28 03:34:43,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:43,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901538039] [2024-06-28 03:34:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:43,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:44,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:44,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901538039] [2024-06-28 03:34:44,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901538039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:44,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:44,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180323605] [2024-06-28 03:34:44,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:44,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:44,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:44,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:44,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:45,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:45,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 172 transitions, 1608 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:45,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:45,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:45,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:47,715 INFO L124 PetriNetUnfolderBase]: 12746/17706 cut-off events. [2024-06-28 03:34:47,716 INFO L125 PetriNetUnfolderBase]: For 585480/585480 co-relation queries the response was YES. [2024-06-28 03:34:47,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118752 conditions, 17706 events. 12746/17706 cut-off events. For 585480/585480 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 98086 event pairs, 5168 based on Foata normal form. 42/17743 useless extension candidates. Maximal degree in co-relation 118701. Up to 16892 conditions per place. [2024-06-28 03:34:47,864 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 187 selfloop transitions, 36 changer transitions 0/231 dead transitions. [2024-06-28 03:34:47,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 231 transitions, 2318 flow [2024-06-28 03:34:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:47,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 03:34:47,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 03:34:47,866 INFO L175 Difference]: Start difference. First operand has 127 places, 172 transitions, 1608 flow. Second operand 9 states and 221 transitions. [2024-06-28 03:34:47,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 231 transitions, 2318 flow [2024-06-28 03:34:48,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 231 transitions, 2245 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 03:34:48,173 INFO L231 Difference]: Finished difference. Result has 130 places, 178 transitions, 1729 flow [2024-06-28 03:34:48,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1729, PETRI_PLACES=130, PETRI_TRANSITIONS=178} [2024-06-28 03:34:48,173 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-28 03:34:48,174 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 178 transitions, 1729 flow [2024-06-28 03:34:48,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:48,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:48,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:48,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:34:48,174 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:48,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:48,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1018998122, now seen corresponding path program 4 times [2024-06-28 03:34:48,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:48,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626536429] [2024-06-28 03:34:48,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:48,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:49,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:49,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626536429] [2024-06-28 03:34:49,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626536429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:49,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:49,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:49,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116424725] [2024-06-28 03:34:49,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:49,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:49,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:49,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:49,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:49,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:49,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 178 transitions, 1729 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:49,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:49,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:49,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:52,190 INFO L124 PetriNetUnfolderBase]: 13286/18398 cut-off events. [2024-06-28 03:34:52,190 INFO L125 PetriNetUnfolderBase]: For 624489/624489 co-relation queries the response was YES. [2024-06-28 03:34:52,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125098 conditions, 18398 events. 13286/18398 cut-off events. For 624489/624489 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 99658 event pairs, 5428 based on Foata normal form. 6/18399 useless extension candidates. Maximal degree in co-relation 125045. Up to 17981 conditions per place. [2024-06-28 03:34:52,372 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 191 selfloop transitions, 29 changer transitions 0/225 dead transitions. [2024-06-28 03:34:52,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 225 transitions, 2408 flow [2024-06-28 03:34:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:52,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 03:34:52,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078431372549017 [2024-06-28 03:34:52,374 INFO L175 Difference]: Start difference. First operand has 130 places, 178 transitions, 1729 flow. Second operand 8 states and 188 transitions. [2024-06-28 03:34:52,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 225 transitions, 2408 flow [2024-06-28 03:34:52,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 225 transitions, 2308 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:52,796 INFO L231 Difference]: Finished difference. Result has 133 places, 185 transitions, 1848 flow [2024-06-28 03:34:52,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1848, PETRI_PLACES=133, PETRI_TRANSITIONS=185} [2024-06-28 03:34:52,797 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2024-06-28 03:34:52,797 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 185 transitions, 1848 flow [2024-06-28 03:34:52,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:52,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:52,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:52,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:34:52,798 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:52,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:52,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2051628094, now seen corresponding path program 5 times [2024-06-28 03:34:52,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:52,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266487705] [2024-06-28 03:34:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:52,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:53,941 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 03:34:53,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:53,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266487705] [2024-06-28 03:34:53,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266487705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:53,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:53,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:53,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602817296] [2024-06-28 03:34:53,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:53,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:53,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:53,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:54,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:54,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 185 transitions, 1848 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:54,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:54,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:54,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:56,605 INFO L124 PetriNetUnfolderBase]: 13271/18377 cut-off events. [2024-06-28 03:34:56,606 INFO L125 PetriNetUnfolderBase]: For 662572/662572 co-relation queries the response was YES. [2024-06-28 03:34:56,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127641 conditions, 18377 events. 13271/18377 cut-off events. For 662572/662572 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 99520 event pairs, 5401 based on Foata normal form. 6/18378 useless extension candidates. Maximal degree in co-relation 127586. Up to 17945 conditions per place. [2024-06-28 03:34:56,775 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 190 selfloop transitions, 32 changer transitions 0/227 dead transitions. [2024-06-28 03:34:56,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 227 transitions, 2492 flow [2024-06-28 03:34:56,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 03:34:56,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2024-06-28 03:34:56,777 INFO L175 Difference]: Start difference. First operand has 133 places, 185 transitions, 1848 flow. Second operand 8 states and 186 transitions. [2024-06-28 03:34:56,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 227 transitions, 2492 flow [2024-06-28 03:34:57,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 227 transitions, 2342 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:57,161 INFO L231 Difference]: Finished difference. Result has 136 places, 188 transitions, 1880 flow [2024-06-28 03:34:57,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1880, PETRI_PLACES=136, PETRI_TRANSITIONS=188} [2024-06-28 03:34:57,162 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 82 predicate places. [2024-06-28 03:34:57,162 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 188 transitions, 1880 flow [2024-06-28 03:34:57,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:57,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:57,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:57,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:34:57,163 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:57,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:57,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1878855965, now seen corresponding path program 2 times [2024-06-28 03:34:57,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:57,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086394401] [2024-06-28 03:34:57,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:57,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:58,047 INFO 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 03:34:58,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:58,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086394401] [2024-06-28 03:34:58,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086394401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:58,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:58,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:58,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540140586] [2024-06-28 03:34:58,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:58,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:58,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:58,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:58,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:58,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:58,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 188 transitions, 1880 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:58,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:58,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:58,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand