./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.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/mix055_power.oepc_pso.oepc_rmo.oepc.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/mix055_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix055_power.oepc_pso.oepc_rmo.oepc.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 03:36:42,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:36:42,599 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:36:42,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:36:42,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:36:42,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:36:42,643 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:36:42,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:36:42,644 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:36:42,647 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:36:42,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:36:42,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:36:42,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:36:42,650 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:36:42,650 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:36:42,651 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:36:42,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:36:42,651 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:36:42,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:36:42,652 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:36:42,652 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:36:42,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:36:42,653 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:36:42,653 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:36:42,653 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:36:42,653 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:36:42,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:36:42,654 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:36:42,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:36:42,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:36:42,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:36:42,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:36:42,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:36:42,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:36:42,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:36:42,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:36:42,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:36:42,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:36:42,657 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:36:42,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:36:42,658 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:36:42,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:36:42,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:36:42,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:36:42,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:36:42,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:36:42,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:36:42,974 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:36:42,975 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:36:42,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:36:44,119 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:36:44,401 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:36:44,401 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix055_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:36:44,423 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43b5dd0a2/1a22619ef1434bf3b74ab5310b29ea42/FLAGc3f5c70fb [2024-06-28 03:36:44,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43b5dd0a2/1a22619ef1434bf3b74ab5310b29ea42 [2024-06-28 03:36:44,438 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:36:44,439 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:36:44,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix055_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 03:36:44,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:36:44,664 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:36:44,666 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:36:44,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:36:44,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:36:44,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:36:44" (1/2) ... [2024-06-28 03:36:44,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfd0cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:36:44, skipping insertion in model container [2024-06-28 03:36:44,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:36:44" (1/2) ... [2024-06-28 03:36:44,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e52dd29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:36:44, skipping insertion in model container [2024-06-28 03:36:44,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:36:44" (2/2) ... [2024-06-28 03:36:44,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dfd0cee and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:44, skipping insertion in model container [2024-06-28 03:36:44,678 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:36:44" (2/2) ... [2024-06-28 03:36:44,678 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:36:44,795 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:36:44,797 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] ((((((((((((((((((((! multithreaded || a$read_delayed == (_Bool)0) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! 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$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0) [2024-06-28 03:36:44,797 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] ((((((((((((((((((((! multithreaded || a$read_delayed == (_Bool)0) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$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_p1_EAX == 0 || __unbuffered_p1_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)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0) [2024-06-28 03:36:44,797 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] ((((((((((((((((((((! multithreaded || a$read_delayed == (_Bool)0) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! 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$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0) [2024-06-28 03:36:44,797 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ((((((((((((((((((((! multithreaded || a$read_delayed == (_Bool)0) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((0 <= __unbuffered_cnt && a$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_p1_EAX == 0 || __unbuffered_p1_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)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0) [2024-06-28 03:36:44,798 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:36:44,798 INFO L106 edCorrectnessWitness]: ghost_update [L860-L860] multithreaded = 1; [2024-06-28 03:36:44,844 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:36:45,191 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:36:45,200 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 03:36:45,371 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:36:45,414 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:36:45,414 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:45 WrapperNode [2024-06-28 03:36:45,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:36:45,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:36:45,416 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:36:45,416 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:36:45,422 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 03:36:45" (1/1) ... [2024-06-28 03:36:45,454 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 03:36:45" (1/1) ... [2024-06-28 03:36:45,486 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-28 03:36:45,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:36:45,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:36:45,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:36:45,488 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:36:45,498 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 03:36:45" (1/1) ... [2024-06-28 03:36:45,498 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 03:36:45" (1/1) ... [2024-06-28 03:36:45,501 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 03:36:45" (1/1) ... [2024-06-28 03:36:45,519 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 03:36:45,524 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 03:36:45" (1/1) ... [2024-06-28 03:36:45,524 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 03:36:45" (1/1) ... [2024-06-28 03:36:45,536 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 03:36:45" (1/1) ... [2024-06-28 03:36:45,553 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 03:36:45" (1/1) ... [2024-06-28 03:36:45,556 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 03:36:45" (1/1) ... [2024-06-28 03:36:45,558 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 03:36:45" (1/1) ... [2024-06-28 03:36:45,561 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:36:45,562 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:36:45,562 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:36:45,562 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:36:45,563 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 03:36:45" (1/1) ... [2024-06-28 03:36:45,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:36:45,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:36:45,650 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 03:36:45,700 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 03:36:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:36:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:36:45,724 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:36:45,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:36:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:36:45,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:36:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:36:45,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:36:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:36:45,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:36:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:36:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:36:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:36:45,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:36:45,729 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 03:36:45,863 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:36:45,865 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:36:46,228 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:36:46,228 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:36:46,430 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:36:46,430 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:36:46,431 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:36:46 BoogieIcfgContainer [2024-06-28 03:36:46,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:36:46,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:36:46,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:36:46,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:36:46,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:36:44" (1/4) ... [2024-06-28 03:36:46,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32333fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:36:46, skipping insertion in model container [2024-06-28 03:36:46,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:36:44" (2/4) ... [2024-06-28 03:36:46,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32333fdf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:36:46, skipping insertion in model container [2024-06-28 03:36:46,438 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 03:36:45" (3/4) ... [2024-06-28 03:36:46,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32333fdf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:36:46, skipping insertion in model container [2024-06-28 03:36:46,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:36:46" (4/4) ... [2024-06-28 03:36:46,440 INFO L112 eAbstractionObserver]: Analyzing ICFG mix055_power.oepc_pso.oepc_rmo.oepc.i [2024-06-28 03:36:46,455 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:36:46,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:36:46,455 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:36:46,513 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:36:46,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:36:46,590 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-28 03:36:46,591 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:36:46,592 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 89 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 03:36:46,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:36:46,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-28 03:36:46,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:36:46,617 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;@35d87c65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:36:46,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:36:46,624 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:36:46,624 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:36:46,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:36:46,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:46,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:36:46,626 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 03:36:46,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:46,631 INFO L85 PathProgramCache]: Analyzing trace with hash 394003208, now seen corresponding path program 1 times [2024-06-28 03:36:46,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:46,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657454009] [2024-06-28 03:36:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:46,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:47,636 INFO 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 03:36:47,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:47,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657454009] [2024-06-28 03:36:47,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657454009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:47,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:47,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:36:47,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081775231] [2024-06-28 03:36:47,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:47,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:36:47,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:47,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:36:47,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:36:47,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:47,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 03:36:47,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:47,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:47,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:49,831 INFO L124 PetriNetUnfolderBase]: 11595/15741 cut-off events. [2024-06-28 03:36:49,832 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-06-28 03:36:49,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31877 conditions, 15741 events. 11595/15741 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 82008 event pairs, 9068 based on Foata normal form. 1/15520 useless extension candidates. Maximal degree in co-relation 31864. Up to 15685 conditions per place. [2024-06-28 03:36:49,949 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 44 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-28 03:36:49,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 229 flow [2024-06-28 03:36:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:36:49,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:36:49,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-06-28 03:36:49,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2024-06-28 03:36:49,962 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 92 transitions. [2024-06-28 03:36:49,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 229 flow [2024-06-28 03:36:49,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:49,967 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-28 03:36:49,969 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 03:36:49,972 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-28 03:36:49,972 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-28 03:36:49,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 03:36:49,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:49,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:49,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:36:49,974 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 03:36:49,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:49,974 INFO L85 PathProgramCache]: Analyzing trace with hash 680618781, now seen corresponding path program 1 times [2024-06-28 03:36:49,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:49,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748356001] [2024-06-28 03:36:49,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:49,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:50,738 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 03:36:50,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:50,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748356001] [2024-06-28 03:36:50,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748356001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:50,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:50,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:36:50,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403966368] [2024-06-28 03:36:50,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:50,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:36:50,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:50,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:36:50,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:36:50,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:50,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:50,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:50,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:50,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:52,707 INFO L124 PetriNetUnfolderBase]: 11585/15735 cut-off events. [2024-06-28 03:36:52,708 INFO L125 PetriNetUnfolderBase]: For 2898/2898 co-relation queries the response was YES. [2024-06-28 03:36:52,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35854 conditions, 15735 events. 11585/15735 cut-off events. For 2898/2898 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 81878 event pairs, 8249 based on Foata normal form. 4/15738 useless extension candidates. Maximal degree in co-relation 35842. Up to 15650 conditions per place. [2024-06-28 03:36:52,801 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 54 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-28 03:36:52,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 321 flow [2024-06-28 03:36:52,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:36:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:36:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-28 03:36:52,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 03:36:52,806 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 119 transitions. [2024-06-28 03:36:52,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 321 flow [2024-06-28 03:36:52,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:36:52,809 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-28 03:36:52,810 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 03:36:52,811 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-28 03:36:52,811 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-28 03:36:52,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:52,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:52,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:52,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:36:52,815 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 03:36:52,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash -375652567, now seen corresponding path program 1 times [2024-06-28 03:36:52,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:52,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077209813] [2024-06-28 03:36:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:52,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:53,644 INFO 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 03:36:53,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:53,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077209813] [2024-06-28 03:36:53,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077209813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:53,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:53,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:36:53,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554014529] [2024-06-28 03:36:53,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:53,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:36:53,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:53,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:36:53,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:36:53,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:53,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:53,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:53,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:53,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:55,544 INFO L124 PetriNetUnfolderBase]: 11693/15878 cut-off events. [2024-06-28 03:36:55,545 INFO L125 PetriNetUnfolderBase]: For 8562/8562 co-relation queries the response was YES. [2024-06-28 03:36:55,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40229 conditions, 15878 events. 11693/15878 cut-off events. For 8562/8562 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 83028 event pairs, 6700 based on Foata normal form. 10/15886 useless extension candidates. Maximal degree in co-relation 40215. Up to 15623 conditions per place. [2024-06-28 03:36:55,645 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 74 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-28 03:36:55,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 101 transitions, 545 flow [2024-06-28 03:36:55,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:36:55,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:36:55,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-06-28 03:36:55,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6196078431372549 [2024-06-28 03:36:55,650 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 158 transitions. [2024-06-28 03:36:55,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 101 transitions, 545 flow [2024-06-28 03:36:55,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 101 transitions, 526 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:36:55,656 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 310 flow [2024-06-28 03:36:55,657 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=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=61, PETRI_TRANSITIONS=63} [2024-06-28 03:36:55,658 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-28 03:36:55,658 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 310 flow [2024-06-28 03:36:55,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:55,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:55,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:55,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:36:55,659 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 03:36:55,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash 657855814, now seen corresponding path program 1 times [2024-06-28 03:36:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:55,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11306584] [2024-06-28 03:36:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:55,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:56,755 INFO 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 03:36:56,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:56,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11306584] [2024-06-28 03:36:56,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11306584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:56,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:56,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:36:56,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661717003] [2024-06-28 03:36:56,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:56,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:36:56,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:56,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:36:56,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:36:56,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:56,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:56,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:56,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:56,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:58,557 INFO L124 PetriNetUnfolderBase]: 11739/15944 cut-off events. [2024-06-28 03:36:58,558 INFO L125 PetriNetUnfolderBase]: For 20683/20685 co-relation queries the response was YES. [2024-06-28 03:36:58,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47691 conditions, 15944 events. 11739/15944 cut-off events. For 20683/20685 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 83230 event pairs, 5599 based on Foata normal form. 10/15952 useless extension candidates. Maximal degree in co-relation 47674. Up to 15545 conditions per place. [2024-06-28 03:36:58,657 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 89 selfloop transitions, 37 changer transitions 0/132 dead transitions. [2024-06-28 03:36:58,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 132 transitions, 856 flow [2024-06-28 03:36:58,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:36:58,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:36:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-06-28 03:36:58,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6241830065359477 [2024-06-28 03:36:58,659 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 310 flow. Second operand 6 states and 191 transitions. [2024-06-28 03:36:58,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 132 transitions, 856 flow [2024-06-28 03:36:58,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 132 transitions, 844 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 03:36:58,669 INFO L231 Difference]: Finished difference. Result has 70 places, 80 transitions, 548 flow [2024-06-28 03:36:58,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=548, PETRI_PLACES=70, PETRI_TRANSITIONS=80} [2024-06-28 03:36:58,671 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-28 03:36:58,671 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 80 transitions, 548 flow [2024-06-28 03:36:58,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:58,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:58,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:58,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:36:58,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:36:58,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:58,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1081304482, now seen corresponding path program 1 times [2024-06-28 03:36:58,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:58,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154688815] [2024-06-28 03:36:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:58,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:59,765 INFO 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 03:36:59,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:59,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154688815] [2024-06-28 03:36:59,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154688815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:59,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:59,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:36:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306823092] [2024-06-28 03:36:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:59,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:36:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:59,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:36:59,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:36:59,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 51 [2024-06-28 03:36:59,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 548 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:36:59,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:59,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 51 [2024-06-28 03:36:59,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:01,557 INFO L124 PetriNetUnfolderBase]: 11926/16233 cut-off events. [2024-06-28 03:37:01,557 INFO L125 PetriNetUnfolderBase]: For 39110/39115 co-relation queries the response was YES. [2024-06-28 03:37:01,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56038 conditions, 16233 events. 11926/16233 cut-off events. For 39110/39115 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 85424 event pairs, 4656 based on Foata normal form. 40/16271 useless extension candidates. Maximal degree in co-relation 56015. Up to 15546 conditions per place. [2024-06-28 03:37:01,697 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 100 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2024-06-28 03:37:01,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 146 transitions, 1090 flow [2024-06-28 03:37:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:01,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-06-28 03:37:01,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6106442577030813 [2024-06-28 03:37:01,704 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 548 flow. Second operand 7 states and 218 transitions. [2024-06-28 03:37:01,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 146 transitions, 1090 flow [2024-06-28 03:37:01,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 146 transitions, 1068 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-28 03:37:01,732 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 643 flow [2024-06-28 03:37:01,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=643, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2024-06-28 03:37:01,736 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-28 03:37:01,736 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 643 flow [2024-06-28 03:37:01,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states 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 03:37:01,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:01,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:01,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:37:01,737 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 03:37:01,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:01,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2090783415, now seen corresponding path program 1 times [2024-06-28 03:37:01,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:01,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113846304] [2024-06-28 03:37:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:01,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:02,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:02,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:02,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113846304] [2024-06-28 03:37:02,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113846304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:02,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:02,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:37:02,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554260934] [2024-06-28 03:37:02,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:02,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:37:02,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:02,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:37:02,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:37:02,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:37:02,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 643 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 03:37:02,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:02,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:37:02,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:04,176 INFO L124 PetriNetUnfolderBase]: 11908/16212 cut-off events. [2024-06-28 03:37:04,177 INFO L125 PetriNetUnfolderBase]: For 49395/49395 co-relation queries the response was YES. [2024-06-28 03:37:04,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58899 conditions, 16212 events. 11908/16212 cut-off events. For 49395/49395 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 85131 event pairs, 5782 based on Foata normal form. 6/16217 useless extension candidates. Maximal degree in co-relation 58872. Up to 16118 conditions per place. [2024-06-28 03:37:04,293 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 81 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-28 03:37:04,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 875 flow [2024-06-28 03:37:04,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:37:04,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:37:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 03:37:04,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 03:37:04,299 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 643 flow. Second operand 5 states and 119 transitions. [2024-06-28 03:37:04,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 875 flow [2024-06-28 03:37:04,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 778 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:37:04,329 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 586 flow [2024-06-28 03:37:04,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2024-06-28 03:37:04,332 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-28 03:37:04,332 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 586 flow [2024-06-28 03:37:04,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 03:37:04,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:04,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:04,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:37:04,333 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 03:37:04,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:04,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1606997450, now seen corresponding path program 1 times [2024-06-28 03:37:04,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:04,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990591882] [2024-06-28 03:37:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:04,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:05,228 INFO 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 03:37:05,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:05,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990591882] [2024-06-28 03:37:05,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990591882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:05,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:05,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:37:05,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993103615] [2024-06-28 03:37:05,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:05,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:37:05,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:05,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:37:05,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:37:05,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:37:05,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 586 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 03:37:05,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:05,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:37:05,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:06,687 INFO L124 PetriNetUnfolderBase]: 11934/16243 cut-off events. [2024-06-28 03:37:06,688 INFO L125 PetriNetUnfolderBase]: For 55676/55676 co-relation queries the response was YES. [2024-06-28 03:37:06,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59665 conditions, 16243 events. 11934/16243 cut-off events. For 55676/55676 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 85187 event pairs, 5477 based on Foata normal form. 12/16253 useless extension candidates. Maximal degree in co-relation 59636. Up to 15965 conditions per place. [2024-06-28 03:37:06,798 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 88 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2024-06-28 03:37:06,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 118 transitions, 976 flow [2024-06-28 03:37:06,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:37:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:37:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 03:37:06,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49673202614379086 [2024-06-28 03:37:06,800 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 586 flow. Second operand 6 states and 152 transitions. [2024-06-28 03:37:06,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 118 transitions, 976 flow [2024-06-28 03:37:06,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 118 transitions, 935 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:37:06,830 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 654 flow [2024-06-28 03:37:06,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=654, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2024-06-28 03:37:06,832 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-06-28 03:37:06,832 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 654 flow [2024-06-28 03:37:06,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 03:37:06,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:06,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:06,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:37:06,833 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 03:37:06,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:06,833 INFO L85 PathProgramCache]: Analyzing trace with hash -801807082, now seen corresponding path program 2 times [2024-06-28 03:37:06,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:06,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137717656] [2024-06-28 03:37:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:06,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:07,730 INFO 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 03:37:07,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:07,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137717656] [2024-06-28 03:37:07,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137717656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:07,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:07,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:37:07,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859442804] [2024-06-28 03:37:07,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:07,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:37:07,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:07,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:37:07,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:37:07,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:37:07,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 654 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 03:37:07,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:07,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:37:07,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:09,493 INFO L124 PetriNetUnfolderBase]: 11889/16235 cut-off events. [2024-06-28 03:37:09,493 INFO L125 PetriNetUnfolderBase]: For 67944/67944 co-relation queries the response was YES. [2024-06-28 03:37:09,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60853 conditions, 16235 events. 11889/16235 cut-off events. For 67944/67944 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 86776 event pairs, 7270 based on Foata normal form. 6/16237 useless extension candidates. Maximal degree in co-relation 60824. Up to 16073 conditions per place. [2024-06-28 03:37:09,591 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 91 selfloop transitions, 16 changer transitions 0/112 dead transitions. [2024-06-28 03:37:09,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 112 transitions, 949 flow [2024-06-28 03:37:09,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 03:37:09,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:37:09,593 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 654 flow. Second operand 7 states and 153 transitions. [2024-06-28 03:37:09,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 112 transitions, 949 flow [2024-06-28 03:37:09,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 112 transitions, 905 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:37:09,639 INFO L231 Difference]: Finished difference. Result has 83 places, 88 transitions, 675 flow [2024-06-28 03:37:09,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=675, PETRI_PLACES=83, PETRI_TRANSITIONS=88} [2024-06-28 03:37:09,640 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-28 03:37:09,641 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 88 transitions, 675 flow [2024-06-28 03:37:09,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 03:37:09,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:09,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:09,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:37:09,641 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 03:37:09,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash -827855454, now seen corresponding path program 1 times [2024-06-28 03:37:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310942332] [2024-06-28 03:37:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:11,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:11,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310942332] [2024-06-28 03:37:11,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310942332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:11,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:11,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:11,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765449843] [2024-06-28 03:37:11,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:11,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:11,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:11,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:11,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:37:11,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 88 transitions, 675 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:11,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:11,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:37:11,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:13,829 INFO L124 PetriNetUnfolderBase]: 14429/19615 cut-off events. [2024-06-28 03:37:13,829 INFO L125 PetriNetUnfolderBase]: For 90424/90424 co-relation queries the response was YES. [2024-06-28 03:37:13,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73327 conditions, 19615 events. 14429/19615 cut-off events. For 90424/90424 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 103220 event pairs, 8857 based on Foata normal form. 6/19620 useless extension candidates. Maximal degree in co-relation 73296. Up to 19424 conditions per place. [2024-06-28 03:37:13,978 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 100 selfloop transitions, 22 changer transitions 0/126 dead transitions. [2024-06-28 03:37:13,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 126 transitions, 1070 flow [2024-06-28 03:37:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-28 03:37:13,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-06-28 03:37:13,980 INFO L175 Difference]: Start difference. First operand has 83 places, 88 transitions, 675 flow. Second operand 8 states and 168 transitions. [2024-06-28 03:37:13,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 126 transitions, 1070 flow [2024-06-28 03:37:14,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 126 transitions, 995 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:14,108 INFO L231 Difference]: Finished difference. Result has 86 places, 95 transitions, 738 flow [2024-06-28 03:37:14,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=738, PETRI_PLACES=86, PETRI_TRANSITIONS=95} [2024-06-28 03:37:14,108 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-28 03:37:14,109 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 95 transitions, 738 flow [2024-06-28 03:37:14,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:14,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:14,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:14,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:37:14,109 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:37:14,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1320930071, now seen corresponding path program 1 times [2024-06-28 03:37:14,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:14,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997758064] [2024-06-28 03:37:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:14,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:14,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:14,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997758064] [2024-06-28 03:37:14,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997758064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:14,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:14,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:37:14,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540501235] [2024-06-28 03:37:14,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:14,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:37:14,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:14,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:37:14,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:37:14,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:37:14,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 95 transitions, 738 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 03:37:14,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:14,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:37:14,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:16,620 INFO L124 PetriNetUnfolderBase]: 14422/19606 cut-off events. [2024-06-28 03:37:16,620 INFO L125 PetriNetUnfolderBase]: For 109587/109587 co-relation queries the response was YES. [2024-06-28 03:37:16,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77553 conditions, 19606 events. 14422/19606 cut-off events. For 109587/109587 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 103013 event pairs, 8964 based on Foata normal form. 2/19607 useless extension candidates. Maximal degree in co-relation 77521. Up to 19481 conditions per place. [2024-06-28 03:37:16,733 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 97 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2024-06-28 03:37:16,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 112 transitions, 1026 flow [2024-06-28 03:37:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:37:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:37:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-28 03:37:16,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-06-28 03:37:16,735 INFO L175 Difference]: Start difference. First operand has 86 places, 95 transitions, 738 flow. Second operand 5 states and 110 transitions. [2024-06-28 03:37:16,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 112 transitions, 1026 flow [2024-06-28 03:37:16,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 112 transitions, 962 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 03:37:16,840 INFO L231 Difference]: Finished difference. Result has 86 places, 99 transitions, 751 flow [2024-06-28 03:37:16,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=751, PETRI_PLACES=86, PETRI_TRANSITIONS=99} [2024-06-28 03:37:16,840 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-06-28 03:37:16,841 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 99 transitions, 751 flow [2024-06-28 03:37:16,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 03:37:16,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:16,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:16,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:37:16,841 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 03:37:16,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:16,842 INFO L85 PathProgramCache]: Analyzing trace with hash -442677171, now seen corresponding path program 1 times [2024-06-28 03:37:16,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:16,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698700347] [2024-06-28 03:37:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:16,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:17,747 INFO 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 03:37:17,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:17,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698700347] [2024-06-28 03:37:17,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698700347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:17,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:17,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:17,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345678265] [2024-06-28 03:37:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:17,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:17,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:17,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:37:17,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 99 transitions, 751 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:17,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:17,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:37:17,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:19,959 INFO L124 PetriNetUnfolderBase]: 14511/19745 cut-off events. [2024-06-28 03:37:19,960 INFO L125 PetriNetUnfolderBase]: For 125869/125919 co-relation queries the response was YES. [2024-06-28 03:37:20,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82946 conditions, 19745 events. 14511/19745 cut-off events. For 125869/125919 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 105288 event pairs, 6565 based on Foata normal form. 48/19786 useless extension candidates. Maximal degree in co-relation 82913. Up to 19134 conditions per place. [2024-06-28 03:37:20,122 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 126 selfloop transitions, 70 changer transitions 0/202 dead transitions. [2024-06-28 03:37:20,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 202 transitions, 1886 flow [2024-06-28 03:37:20,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:20,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:20,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 03:37:20,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-06-28 03:37:20,126 INFO L175 Difference]: Start difference. First operand has 86 places, 99 transitions, 751 flow. Second operand 8 states and 208 transitions. [2024-06-28 03:37:20,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 202 transitions, 1886 flow [2024-06-28 03:37:20,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 202 transitions, 1839 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 03:37:20,194 INFO L231 Difference]: Finished difference. Result has 94 places, 144 transitions, 1335 flow [2024-06-28 03:37:20,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1335, PETRI_PLACES=94, PETRI_TRANSITIONS=144} [2024-06-28 03:37:20,194 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 40 predicate places. [2024-06-28 03:37:20,195 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 144 transitions, 1335 flow [2024-06-28 03:37:20,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:20,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:20,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:20,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:37:20,195 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:37:20,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash 169617159, now seen corresponding path program 2 times [2024-06-28 03:37:20,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:20,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860279233] [2024-06-28 03:37:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:20,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:21,097 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 03:37:21,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:21,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860279233] [2024-06-28 03:37:21,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860279233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:21,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:21,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:21,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394295938] [2024-06-28 03:37:21,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:21,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:21,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:21,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:21,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:21,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:37:21,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 144 transitions, 1335 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:21,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:21,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:37:21,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:23,502 INFO L124 PetriNetUnfolderBase]: 14615/19895 cut-off events. [2024-06-28 03:37:23,502 INFO L125 PetriNetUnfolderBase]: For 155338/155386 co-relation queries the response was YES. [2024-06-28 03:37:23,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91191 conditions, 19895 events. 14615/19895 cut-off events. For 155338/155386 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 105957 event pairs, 6469 based on Foata normal form. 52/19943 useless extension candidates. Maximal degree in co-relation 91154. Up to 19330 conditions per place. [2024-06-28 03:37:23,629 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 133 selfloop transitions, 68 changer transitions 0/207 dead transitions. [2024-06-28 03:37:23,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 207 transitions, 2185 flow [2024-06-28 03:37:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:23,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 03:37:23,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:37:23,631 INFO L175 Difference]: Start difference. First operand has 94 places, 144 transitions, 1335 flow. Second operand 8 states and 204 transitions. [2024-06-28 03:37:23,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 207 transitions, 2185 flow [2024-06-28 03:37:23,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 207 transitions, 2120 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 03:37:23,751 INFO L231 Difference]: Finished difference. Result has 102 places, 155 transitions, 1593 flow [2024-06-28 03:37:23,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1593, PETRI_PLACES=102, PETRI_TRANSITIONS=155} [2024-06-28 03:37:23,752 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-28 03:37:23,752 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 155 transitions, 1593 flow [2024-06-28 03:37:23,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:23,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:23,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:23,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:37:23,753 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 03:37:23,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:23,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2129189251, now seen corresponding path program 3 times [2024-06-28 03:37:23,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:23,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608839109] [2024-06-28 03:37:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:23,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:24,745 INFO 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 03:37:24,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:24,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608839109] [2024-06-28 03:37:24,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608839109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:24,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:24,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:24,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238136202] [2024-06-28 03:37:24,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:24,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:24,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:24,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:24,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:24,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:37:24,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 155 transitions, 1593 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:24,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:24,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:37:24,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:27,544 INFO L124 PetriNetUnfolderBase]: 14840/20222 cut-off events. [2024-06-28 03:37:27,544 INFO L125 PetriNetUnfolderBase]: For 176390/176438 co-relation queries the response was YES. [2024-06-28 03:37:27,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95218 conditions, 20222 events. 14840/20222 cut-off events. For 176390/176438 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 108104 event pairs, 6340 based on Foata normal form. 52/20271 useless extension candidates. Maximal degree in co-relation 95177. Up to 19184 conditions per place. [2024-06-28 03:37:27,689 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 133 selfloop transitions, 123 changer transitions 0/262 dead transitions. [2024-06-28 03:37:27,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 262 transitions, 2963 flow [2024-06-28 03:37:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 265 transitions. [2024-06-28 03:37:27,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196078431372549 [2024-06-28 03:37:27,693 INFO L175 Difference]: Start difference. First operand has 102 places, 155 transitions, 1593 flow. Second operand 10 states and 265 transitions. [2024-06-28 03:37:27,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 262 transitions, 2963 flow [2024-06-28 03:37:27,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 262 transitions, 2812 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 03:37:27,844 INFO L231 Difference]: Finished difference. Result has 109 places, 184 transitions, 2075 flow [2024-06-28 03:37:27,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2075, PETRI_PLACES=109, PETRI_TRANSITIONS=184} [2024-06-28 03:37:27,845 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-28 03:37:27,845 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 184 transitions, 2075 flow [2024-06-28 03:37:27,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:27,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:27,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:27,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:37:27,846 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 03:37:27,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:27,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1663836207, now seen corresponding path program 4 times [2024-06-28 03:37:27,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:27,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190510263] [2024-06-28 03:37:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:27,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:28,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:28,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:28,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190510263] [2024-06-28 03:37:28,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190510263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:28,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:28,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:28,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806237443] [2024-06-28 03:37:28,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:28,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:28,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:28,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:28,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:28,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:37:28,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 184 transitions, 2075 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:28,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:28,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:37:28,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:31,443 INFO L124 PetriNetUnfolderBase]: 14920/20328 cut-off events. [2024-06-28 03:37:31,444 INFO L125 PetriNetUnfolderBase]: For 210892/210963 co-relation queries the response was YES. [2024-06-28 03:37:31,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101602 conditions, 20328 events. 14920/20328 cut-off events. For 210892/210963 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 108623 event pairs, 6414 based on Foata normal form. 63/20386 useless extension candidates. Maximal degree in co-relation 101558. Up to 19254 conditions per place. [2024-06-28 03:37:31,625 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 109 selfloop transitions, 124 changer transitions 0/239 dead transitions. [2024-06-28 03:37:31,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 239 transitions, 2997 flow [2024-06-28 03:37:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:31,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:31,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-06-28 03:37:31,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-06-28 03:37:31,628 INFO L175 Difference]: Start difference. First operand has 109 places, 184 transitions, 2075 flow. Second operand 7 states and 182 transitions. [2024-06-28 03:37:31,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 239 transitions, 2997 flow [2024-06-28 03:37:31,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 239 transitions, 2817 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:31,807 INFO L231 Difference]: Finished difference. Result has 109 places, 192 transitions, 2300 flow [2024-06-28 03:37:31,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2300, PETRI_PLACES=109, PETRI_TRANSITIONS=192} [2024-06-28 03:37:31,808 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-28 03:37:31,808 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 192 transitions, 2300 flow [2024-06-28 03:37:31,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:31,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:31,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:31,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:37:31,809 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 03:37:31,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:31,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1101177483, now seen corresponding path program 5 times [2024-06-28 03:37:31,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:31,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359727781] [2024-06-28 03:37:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:31,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:32,795 INFO 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 03:37:32,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:32,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359727781] [2024-06-28 03:37:32,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359727781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:32,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:32,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:37:32,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582623352] [2024-06-28 03:37:32,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:32,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:37:32,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:32,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:37:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:37:32,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:37:32,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 192 transitions, 2300 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:32,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:32,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:37:32,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:35,468 INFO L124 PetriNetUnfolderBase]: 14874/20273 cut-off events. [2024-06-28 03:37:35,468 INFO L125 PetriNetUnfolderBase]: For 198172/198216 co-relation queries the response was YES. [2024-06-28 03:37:35,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98883 conditions, 20273 events. 14874/20273 cut-off events. For 198172/198216 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 108436 event pairs, 6501 based on Foata normal form. 54/20323 useless extension candidates. Maximal degree in co-relation 98839. Up to 19484 conditions per place. [2024-06-28 03:37:35,616 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 134 selfloop transitions, 99 changer transitions 0/239 dead transitions. [2024-06-28 03:37:35,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 239 transitions, 3049 flow [2024-06-28 03:37:35,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:35,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 03:37:35,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49299719887955185 [2024-06-28 03:37:35,619 INFO L175 Difference]: Start difference. First operand has 109 places, 192 transitions, 2300 flow. Second operand 7 states and 176 transitions. [2024-06-28 03:37:35,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 239 transitions, 3049 flow [2024-06-28 03:37:35,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 239 transitions, 2722 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-06-28 03:37:35,854 INFO L231 Difference]: Finished difference. Result has 112 places, 192 transitions, 2197 flow [2024-06-28 03:37:35,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1973, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2197, PETRI_PLACES=112, PETRI_TRANSITIONS=192} [2024-06-28 03:37:35,854 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-28 03:37:35,854 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 192 transitions, 2197 flow [2024-06-28 03:37:35,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:35,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:35,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:35,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:37:35,855 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 03:37:35,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash -785135081, now seen corresponding path program 1 times [2024-06-28 03:37:35,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:35,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60942705] [2024-06-28 03:37:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:35,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:37,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:37,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60942705] [2024-06-28 03:37:37,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60942705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:37,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:37,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:37,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809493307] [2024-06-28 03:37:37,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:37,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:37,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:37,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:37:37,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 192 transitions, 2197 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:37,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:37,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:37:37,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:39,652 INFO L124 PetriNetUnfolderBase]: 15602/21262 cut-off events. [2024-06-28 03:37:39,653 INFO L125 PetriNetUnfolderBase]: For 230169/230169 co-relation queries the response was YES. [2024-06-28 03:37:39,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104579 conditions, 21262 events. 15602/21262 cut-off events. For 230169/230169 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 111811 event pairs, 8960 based on Foata normal form. 5/21266 useless extension candidates. Maximal degree in co-relation 104534. Up to 20970 conditions per place. [2024-06-28 03:37:39,871 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 198 selfloop transitions, 37 changer transitions 0/239 dead transitions. [2024-06-28 03:37:39,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 239 transitions, 2990 flow [2024-06-28 03:37:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:37:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:37:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 03:37:39,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425770308123249 [2024-06-28 03:37:39,873 INFO L175 Difference]: Start difference. First operand has 112 places, 192 transitions, 2197 flow. Second operand 7 states and 158 transitions. [2024-06-28 03:37:39,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 239 transitions, 2990 flow [2024-06-28 03:37:40,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 239 transitions, 2772 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:40,185 INFO L231 Difference]: Finished difference. Result has 113 places, 204 transitions, 2282 flow [2024-06-28 03:37:40,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2282, PETRI_PLACES=113, PETRI_TRANSITIONS=204} [2024-06-28 03:37:40,186 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 59 predicate places. [2024-06-28 03:37:40,186 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 204 transitions, 2282 flow [2024-06-28 03:37:40,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:40,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:40,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:40,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:37:40,186 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:37:40,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1966881003, now seen corresponding path program 1 times [2024-06-28 03:37:40,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:40,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138502586] [2024-06-28 03:37:40,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:40,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:40,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:40,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138502586] [2024-06-28 03:37:40,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138502586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:40,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:40,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:37:40,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477577615] [2024-06-28 03:37:40,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:40,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:37:40,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:40,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:37:40,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:37:41,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-06-28 03:37:41,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 204 transitions, 2282 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 03:37:41,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:41,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-06-28 03:37:41,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:44,485 INFO L124 PetriNetUnfolderBase]: 15648/21307 cut-off events. [2024-06-28 03:37:44,485 INFO L125 PetriNetUnfolderBase]: For 228249/228249 co-relation queries the response was YES. [2024-06-28 03:37:44,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104014 conditions, 21307 events. 15648/21307 cut-off events. For 228249/228249 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 111623 event pairs, 8928 based on Foata normal form. 10/21316 useless extension candidates. Maximal degree in co-relation 103969. Up to 21009 conditions per place. [2024-06-28 03:37:44,643 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 218 selfloop transitions, 23 changer transitions 0/245 dead transitions. [2024-06-28 03:37:44,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 245 transitions, 3026 flow [2024-06-28 03:37:44,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:37:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:37:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 03:37:44,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46405228758169936 [2024-06-28 03:37:44,645 INFO L175 Difference]: Start difference. First operand has 113 places, 204 transitions, 2282 flow. Second operand 6 states and 142 transitions. [2024-06-28 03:37:44,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 245 transitions, 3026 flow [2024-06-28 03:37:44,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 245 transitions, 2835 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:44,862 INFO L231 Difference]: Finished difference. Result has 114 places, 218 transitions, 2308 flow [2024-06-28 03:37:44,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2308, PETRI_PLACES=114, PETRI_TRANSITIONS=218} [2024-06-28 03:37:44,862 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-28 03:37:44,862 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 218 transitions, 2308 flow [2024-06-28 03:37:44,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 03:37:44,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:44,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:44,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:37:44,863 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 03:37:44,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:44,863 INFO L85 PathProgramCache]: Analyzing trace with hash 848592347, now seen corresponding path program 1 times [2024-06-28 03:37:44,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:44,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625821120] [2024-06-28 03:37:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:44,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:45,924 INFO 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 03:37:45,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:45,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625821120] [2024-06-28 03:37:45,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625821120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:45,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:45,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:45,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929974329] [2024-06-28 03:37:45,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:45,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:45,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:45,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:45,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:46,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:37:46,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 218 transitions, 2308 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:46,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:46,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:37:46,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:49,136 INFO L124 PetriNetUnfolderBase]: 15756/21565 cut-off events. [2024-06-28 03:37:49,136 INFO L125 PetriNetUnfolderBase]: For 260840/260915 co-relation queries the response was YES. [2024-06-28 03:37:49,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112298 conditions, 21565 events. 15756/21565 cut-off events. For 260840/260915 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 116919 event pairs, 5809 based on Foata normal form. 92/21648 useless extension candidates. Maximal degree in co-relation 112250. Up to 20015 conditions per place. [2024-06-28 03:37:49,281 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 204 selfloop transitions, 89 changer transitions 0/299 dead transitions. [2024-06-28 03:37:49,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 299 transitions, 3553 flow [2024-06-28 03:37:49,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2024-06-28 03:37:49,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514161220043573 [2024-06-28 03:37:49,283 INFO L175 Difference]: Start difference. First operand has 114 places, 218 transitions, 2308 flow. Second operand 9 states and 236 transitions. [2024-06-28 03:37:49,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 299 transitions, 3553 flow [2024-06-28 03:37:49,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 299 transitions, 3509 flow, removed 21 selfloop flow, removed 1 redundant places. [2024-06-28 03:37:49,587 INFO L231 Difference]: Finished difference. Result has 123 places, 225 transitions, 2572 flow [2024-06-28 03:37:49,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2572, PETRI_PLACES=123, PETRI_TRANSITIONS=225} [2024-06-28 03:37:49,587 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 69 predicate places. [2024-06-28 03:37:49,587 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 225 transitions, 2572 flow [2024-06-28 03:37:49,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:49,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:49,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:49,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:37:49,588 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 03:37:49,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:49,588 INFO L85 PathProgramCache]: Analyzing trace with hash 72895157, now seen corresponding path program 2 times [2024-06-28 03:37:49,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:49,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590785989] [2024-06-28 03:37:49,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:49,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:50,691 INFO 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 03:37:50,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:50,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590785989] [2024-06-28 03:37:50,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590785989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:50,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:50,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:50,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986256234] [2024-06-28 03:37:50,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:50,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:50,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:50,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:37:50,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 225 transitions, 2572 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:50,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:50,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:37:50,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:53,997 INFO L124 PetriNetUnfolderBase]: 15920/21809 cut-off events. [2024-06-28 03:37:53,998 INFO L125 PetriNetUnfolderBase]: For 296403/296475 co-relation queries the response was YES. [2024-06-28 03:37:54,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117473 conditions, 21809 events. 15920/21809 cut-off events. For 296403/296475 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 118338 event pairs, 6149 based on Foata normal form. 98/21898 useless extension candidates. Maximal degree in co-relation 117421. Up to 20812 conditions per place. [2024-06-28 03:37:54,306 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 203 selfloop transitions, 85 changer transitions 0/294 dead transitions. [2024-06-28 03:37:54,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 294 transitions, 3655 flow [2024-06-28 03:37:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:54,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-06-28 03:37:54,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5010893246187363 [2024-06-28 03:37:54,308 INFO L175 Difference]: Start difference. First operand has 123 places, 225 transitions, 2572 flow. Second operand 9 states and 230 transitions. [2024-06-28 03:37:54,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 294 transitions, 3655 flow [2024-06-28 03:37:54,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 294 transitions, 3534 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 03:37:54,666 INFO L231 Difference]: Finished difference. Result has 127 places, 227 transitions, 2679 flow [2024-06-28 03:37:54,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2453, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2679, PETRI_PLACES=127, PETRI_TRANSITIONS=227} [2024-06-28 03:37:54,666 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-28 03:37:54,666 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 227 transitions, 2679 flow [2024-06-28 03:37:54,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:54,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:54,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:54,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:37:54,667 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 03:37:54,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:54,667 INFO L85 PathProgramCache]: Analyzing trace with hash -828844417, now seen corresponding path program 3 times [2024-06-28 03:37:54,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:54,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292757244] [2024-06-28 03:37:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:55,772 INFO 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 03:37:55,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:55,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292757244] [2024-06-28 03:37:55,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292757244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:55,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:55,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301679992] [2024-06-28 03:37:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:55,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:55,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:55,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:55,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:55,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:37:55,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 227 transitions, 2679 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:55,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:55,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:37:55,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:59,351 INFO L124 PetriNetUnfolderBase]: 16045/21990 cut-off events. [2024-06-28 03:37:59,351 INFO L125 PetriNetUnfolderBase]: For 322407/322467 co-relation queries the response was YES. [2024-06-28 03:37:59,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120510 conditions, 21990 events. 16045/21990 cut-off events. For 322407/322467 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 119412 event pairs, 6028 based on Foata normal form. 88/22072 useless extension candidates. Maximal degree in co-relation 120456. Up to 21125 conditions per place. [2024-06-28 03:37:59,503 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 214 selfloop transitions, 75 changer transitions 0/295 dead transitions. [2024-06-28 03:37:59,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 295 transitions, 3772 flow [2024-06-28 03:37:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:59,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-28 03:37:59,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989106753812636 [2024-06-28 03:37:59,505 INFO L175 Difference]: Start difference. First operand has 127 places, 227 transitions, 2679 flow. Second operand 9 states and 229 transitions. [2024-06-28 03:37:59,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 295 transitions, 3772 flow [2024-06-28 03:37:59,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 295 transitions, 3586 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:59,932 INFO L231 Difference]: Finished difference. Result has 129 places, 229 transitions, 2703 flow [2024-06-28 03:37:59,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2493, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2703, PETRI_PLACES=129, PETRI_TRANSITIONS=229} [2024-06-28 03:37:59,933 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 75 predicate places. [2024-06-28 03:37:59,933 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 229 transitions, 2703 flow [2024-06-28 03:37:59,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:59,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:59,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:59,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:37:59,934 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 03:37:59,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:59,935 INFO L85 PathProgramCache]: Analyzing trace with hash 132466711, now seen corresponding path program 4 times [2024-06-28 03:37:59,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:59,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879544580] [2024-06-28 03:37:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:59,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:38:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:38:01,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:38:01,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879544580] [2024-06-28 03:38:01,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879544580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:38:01,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:38:01,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:38:01,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017188161] [2024-06-28 03:38:01,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:38:01,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:38:01,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:38:01,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:38:01,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:38:01,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:38:01,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 229 transitions, 2703 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:38:01,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:38:01,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:38:01,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand