./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix051_power.oepc_power.opt_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/mix051_power.oepc_power.opt_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/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix051_power.oepc_power.opt_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 03:33:36,980 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:33:37,051 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:33:37,075 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:33:37,076 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:33:37,111 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:33:37,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:33:37,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:33:37,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:33:37,117 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:33:37,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:33:37,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:33:37,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:33:37,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:33:37,119 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:33:37,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:33:37,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:33:37,120 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:33:37,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:33:37,120 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:33:37,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:33:37,121 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:33:37,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:33:37,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:33:37,122 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:33:37,122 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:33:37,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:33:37,123 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:33:37,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:33:37,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:33:37,124 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:33:37,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:33:37,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:33:37,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:33:37,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:33:37,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:33:37,125 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:33:37,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:33:37,136 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:33:37,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:33:37,136 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:33:37,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:33:37,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:33:37,137 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:33:37,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:33:37,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:33:37,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:33:37,517 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:33:37,517 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:33:37,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-28 03:33:38,647 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:33:38,885 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:33:38,886 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-28 03:33:38,905 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d3b1fce/0deb1ecdfb494f79b3f9afd87fb16fae/FLAG8b01f26f6 [2024-06-28 03:33:38,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d3b1fce/0deb1ecdfb494f79b3f9afd87fb16fae [2024-06-28 03:33:38,919 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:33:38,919 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:33:38,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-28 03:33:39,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:33:39,106 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:33:39,107 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:33:39,107 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:33:39,111 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:33:39,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:33:38" (1/2) ... [2024-06-28 03:33:39,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e6fb20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:39, skipping insertion in model container [2024-06-28 03:33:39,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:33:38" (1/2) ... [2024-06-28 03:33:39,114 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3749f054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:33:39, skipping insertion in model container [2024-06-28 03:33:39,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:33:39" (2/2) ... [2024-06-28 03:33:39,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e6fb20 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39, skipping insertion in model container [2024-06-28 03:33:39,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:33:39" (2/2) ... [2024-06-28 03:33:39,115 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:33:39,209 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:33:39,210 INFO L97 edCorrectnessWitness]: Location invariant before [L866-L866] (((((((((((((((((((((! multithreaded || a$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$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_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0) [2024-06-28 03:33:39,210 INFO L97 edCorrectnessWitness]: Location invariant before [L864-L864] (((((((((((((((((((((! multithreaded || a$r_buff1_thd3 == (_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$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0) [2024-06-28 03:33:39,210 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] (((((((((((((((((((((! multithreaded || a$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (((((((((((((((((((((0 <= __unbuffered_cnt && a$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_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0) [2024-06-28 03:33:39,210 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((! multithreaded || a$r_buff1_thd3 == (_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$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0) [2024-06-28 03:33:39,210 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:33:39,211 INFO L106 edCorrectnessWitness]: ghost_update [L862-L862] multithreaded = 1; [2024-06-28 03:33:39,247 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:33:39,557 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:33:39,569 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:33:39,713 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:33:39,763 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:33:39,763 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39 WrapperNode [2024-06-28 03:33:39,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:33:39,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:33:39,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:33:39,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:33:39,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (1/1) ... [2024-06-28 03:33:39,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (1/1) ... [2024-06-28 03:33:39,811 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 138 [2024-06-28 03:33:39,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:33:39,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:33:39,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:33:39,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:33:39,820 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (1/1) ... [2024-06-28 03:33:39,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (1/1) ... [2024-06-28 03:33:39,828 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (1/1) ... [2024-06-28 03:33:39,844 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:33:39,844 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (1/1) ... [2024-06-28 03:33:39,844 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (1/1) ... [2024-06-28 03:33:39,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (1/1) ... [2024-06-28 03:33:39,855 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (1/1) ... [2024-06-28 03:33:39,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (1/1) ... [2024-06-28 03:33:39,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (1/1) ... [2024-06-28 03:33:39,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:33:39,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:33:39,862 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:33:39,862 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:33:39,863 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (1/1) ... [2024-06-28 03:33:39,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:33:39,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:33:39,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:33:39,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:33:39,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:33:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:33:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:33:39,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:33:39,999 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:33:40,000 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:33:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:33:40,000 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:33:40,000 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 03:33:40,000 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 03:33:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:33:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:33:40,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:33:40,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:33:40,003 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:33:40,151 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:33:40,153 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:33:40,498 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:33:40,498 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:33:40,601 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:33:40,602 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:33:40,602 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:33:40 BoogieIcfgContainer [2024-06-28 03:33:40,602 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:33:40,603 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:33:40,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:33:40,606 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:33:40,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:33:38" (1/4) ... [2024-06-28 03:33:40,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ec3122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:33:40, skipping insertion in model container [2024-06-28 03:33:40,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:33:39" (2/4) ... [2024-06-28 03:33:40,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ec3122 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:33:40, skipping insertion in model container [2024-06-28 03:33:40,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:33:39" (3/4) ... [2024-06-28 03:33:40,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18ec3122 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:33:40, skipping insertion in model container [2024-06-28 03:33:40,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:33:40" (4/4) ... [2024-06-28 03:33:40,608 INFO L112 eAbstractionObserver]: Analyzing ICFG mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2024-06-28 03:33:40,622 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:33:40,623 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 03:33:40,623 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:33:40,661 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:33:40,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:33:40,726 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-06-28 03:33:40,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:33:40,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:33:40,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 51 transitions, 118 flow [2024-06-28 03:33:40,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 94 flow [2024-06-28 03:33:40,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:33:40,799 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;@5ba4c983, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:33:40,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 03:33:40,802 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:33:40,802 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:33:40,802 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:33:40,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:40,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:33:40,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:40,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash 398533423, now seen corresponding path program 1 times [2024-06-28 03:33:40,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:40,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074170956] [2024-06-28 03:33:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:40,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:41,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:41,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074170956] [2024-06-28 03:33:41,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074170956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:41,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:41,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:33:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058278075] [2024-06-28 03:33:41,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:41,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:33:41,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:41,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:33:41,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:33:41,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:33:41,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:41,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:41,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:33:41,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:43,197 INFO L124 PetriNetUnfolderBase]: 9587/13193 cut-off events. [2024-06-28 03:33:43,197 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-06-28 03:33:43,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26601 conditions, 13193 events. 9587/13193 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 69756 event pairs, 7462 based on Foata normal form. 1/13008 useless extension candidates. Maximal degree in co-relation 26588. Up to 13017 conditions per place. [2024-06-28 03:33:43,281 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 43 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-28 03:33:43,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 227 flow [2024-06-28 03:33:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:33:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:33:43,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-06-28 03:33:43,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6143790849673203 [2024-06-28 03:33:43,291 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 94 flow. Second operand 3 states and 94 transitions. [2024-06-28 03:33:43,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 227 flow [2024-06-28 03:33:43,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:33:43,296 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 129 flow [2024-06-28 03:33:43,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 03:33:43,300 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-28 03:33:43,301 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 129 flow [2024-06-28 03:33:43,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:43,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:43,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:43,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:33:43,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:43,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:43,302 INFO L85 PathProgramCache]: Analyzing trace with hash 738555854, now seen corresponding path program 1 times [2024-06-28 03:33:43,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:43,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347592538] [2024-06-28 03:33:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:43,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:44,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:44,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347592538] [2024-06-28 03:33:44,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347592538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:44,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:44,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:33:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201875499] [2024-06-28 03:33:44,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:44,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:33:44,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:44,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:33:44,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:33:44,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:33:44,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:44,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:44,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:33:44,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:45,287 INFO L124 PetriNetUnfolderBase]: 9577/13187 cut-off events. [2024-06-28 03:33:45,287 INFO L125 PetriNetUnfolderBase]: For 2471/2471 co-relation queries the response was YES. [2024-06-28 03:33:45,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30036 conditions, 13187 events. 9577/13187 cut-off events. For 2471/2471 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 70033 event pairs, 6775 based on Foata normal form. 4/13188 useless extension candidates. Maximal degree in co-relation 30024. Up to 12982 conditions per place. [2024-06-28 03:33:45,354 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 53 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-06-28 03:33:45,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 319 flow [2024-06-28 03:33:45,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:33:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:33:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-28 03:33:45,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2024-06-28 03:33:45,356 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 129 flow. Second operand 4 states and 122 transitions. [2024-06-28 03:33:45,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 69 transitions, 319 flow [2024-06-28 03:33:45,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:33:45,359 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 177 flow [2024-06-28 03:33:45,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-28 03:33:45,359 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2024-06-28 03:33:45,360 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 177 flow [2024-06-28 03:33:45,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:45,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:45,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:45,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:33:45,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:45,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:45,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1420395858, now seen corresponding path program 1 times [2024-06-28 03:33:45,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:45,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330708259] [2024-06-28 03:33:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:45,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:45,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:46,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:46,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330708259] [2024-06-28 03:33:46,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330708259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:46,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:46,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:33:46,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018377740] [2024-06-28 03:33:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:46,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:33:46,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:46,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:33:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:33:46,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:33:46,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:46,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:46,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:33:46,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:47,477 INFO L124 PetriNetUnfolderBase]: 9685/13379 cut-off events. [2024-06-28 03:33:47,478 INFO L125 PetriNetUnfolderBase]: For 7314/7314 co-relation queries the response was YES. [2024-06-28 03:33:47,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33918 conditions, 13379 events. 9685/13379 cut-off events. For 7314/7314 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 71516 event pairs, 5476 based on Foata normal form. 10/13374 useless extension candidates. Maximal degree in co-relation 33904. Up to 12955 conditions per place. [2024-06-28 03:33:47,531 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 73 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-28 03:33:47,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 101 transitions, 543 flow [2024-06-28 03:33:47,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:33:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:33:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-06-28 03:33:47,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2024-06-28 03:33:47,533 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 177 flow. Second operand 5 states and 162 transitions. [2024-06-28 03:33:47,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 101 transitions, 543 flow [2024-06-28 03:33:47,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 101 transitions, 524 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:33:47,537 INFO L231 Difference]: Finished difference. Result has 61 places, 63 transitions, 310 flow [2024-06-28 03:33:47,538 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 03:33:47,539 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-06-28 03:33:47,539 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 63 transitions, 310 flow [2024-06-28 03:33:47,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:47,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:47,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:47,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:33:47,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:47,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:47,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1692123393, now seen corresponding path program 1 times [2024-06-28 03:33:47,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:47,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71616985] [2024-06-28 03:33:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:47,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:48,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:48,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71616985] [2024-06-28 03:33:48,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71616985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:48,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:48,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:33:48,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964671578] [2024-06-28 03:33:48,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:48,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:33:48,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:48,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:33:48,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:33:48,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:33:48,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:48,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:48,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:33:48,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:49,928 INFO L124 PetriNetUnfolderBase]: 9731/13419 cut-off events. [2024-06-28 03:33:49,940 INFO L125 PetriNetUnfolderBase]: For 17616/17618 co-relation queries the response was YES. [2024-06-28 03:33:50,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40328 conditions, 13419 events. 9731/13419 cut-off events. For 17616/17618 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 71439 event pairs, 4552 based on Foata normal form. 10/13423 useless extension candidates. Maximal degree in co-relation 40311. Up to 12877 conditions per place. [2024-06-28 03:33:50,061 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 88 selfloop transitions, 37 changer transitions 0/132 dead transitions. [2024-06-28 03:33:50,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 132 transitions, 854 flow [2024-06-28 03:33:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:33:50,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:33:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-06-28 03:33:50,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2024-06-28 03:33:50,064 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 310 flow. Second operand 6 states and 196 transitions. [2024-06-28 03:33:50,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 132 transitions, 854 flow [2024-06-28 03:33:50,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 132 transitions, 842 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 03:33:50,075 INFO L231 Difference]: Finished difference. Result has 70 places, 80 transitions, 548 flow [2024-06-28 03:33:50,075 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 03:33:50,076 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-28 03:33:50,076 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 80 transitions, 548 flow [2024-06-28 03:33:50,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:50,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:50,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:50,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:33:50,077 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 03:33:50,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:50,077 INFO L85 PathProgramCache]: Analyzing trace with hash -799151919, now seen corresponding path program 1 times [2024-06-28 03:33:50,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:50,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034257694] [2024-06-28 03:33:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:50,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:51,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:51,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034257694] [2024-06-28 03:33:51,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034257694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:51,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:51,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:33:51,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260285995] [2024-06-28 03:33:51,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:51,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:33:51,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:51,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:33:51,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:33:51,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 51 [2024-06-28 03:33:51,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 80 transitions, 548 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:51,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:51,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 51 [2024-06-28 03:33:51,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:52,704 INFO L124 PetriNetUnfolderBase]: 9918/13739 cut-off events. [2024-06-28 03:33:52,704 INFO L125 PetriNetUnfolderBase]: For 33358/33363 co-relation queries the response was YES. [2024-06-28 03:33:52,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47702 conditions, 13739 events. 9918/13739 cut-off events. For 33358/33363 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 73820 event pairs, 3760 based on Foata normal form. 40/13773 useless extension candidates. Maximal degree in co-relation 47679. Up to 12878 conditions per place. [2024-06-28 03:33:52,785 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 99 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2024-06-28 03:33:52,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 146 transitions, 1088 flow [2024-06-28 03:33:52,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:33:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:33:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-06-28 03:33:52,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-06-28 03:33:52,787 INFO L175 Difference]: Start difference. First operand has 70 places, 80 transitions, 548 flow. Second operand 7 states and 224 transitions. [2024-06-28 03:33:52,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 146 transitions, 1088 flow [2024-06-28 03:33:52,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 146 transitions, 1066 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-28 03:33:52,805 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 643 flow [2024-06-28 03:33:52,805 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 03:33:52,805 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-28 03:33:52,806 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 643 flow [2024-06-28 03:33:52,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:52,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:52,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:52,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:33:52,806 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:52,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:52,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1120415085, now seen corresponding path program 1 times [2024-06-28 03:33:52,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:52,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673393726] [2024-06-28 03:33:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:52,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673393726] [2024-06-28 03:33:53,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673393726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:53,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:53,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:33:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109628711] [2024-06-28 03:33:53,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:53,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:33:53,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:53,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:33:53,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:33:53,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:33:53,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 643 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:53,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:53,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:33:53,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:55,109 INFO L124 PetriNetUnfolderBase]: 9900/13716 cut-off events. [2024-06-28 03:33:55,109 INFO L125 PetriNetUnfolderBase]: For 42287/42287 co-relation queries the response was YES. [2024-06-28 03:33:55,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50239 conditions, 13716 events. 9900/13716 cut-off events. For 42287/42287 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 73553 event pairs, 4704 based on Foata normal form. 6/13719 useless extension candidates. Maximal degree in co-relation 50212. Up to 13450 conditions per place. [2024-06-28 03:33:55,205 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 80 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-28 03:33:55,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 99 transitions, 873 flow [2024-06-28 03:33:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:33:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:33:55,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-28 03:33:55,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2024-06-28 03:33:55,207 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 643 flow. Second operand 5 states and 123 transitions. [2024-06-28 03:33:55,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 99 transitions, 873 flow [2024-06-28 03:33:55,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 776 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:33:55,235 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 586 flow [2024-06-28 03:33:55,235 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 03:33:55,239 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-06-28 03:33:55,239 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 586 flow [2024-06-28 03:33:55,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:55,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:55,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:55,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:33:55,240 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:55,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:55,240 INFO L85 PathProgramCache]: Analyzing trace with hash 481959056, now seen corresponding path program 1 times [2024-06-28 03:33:55,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:55,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561118810] [2024-06-28 03:33:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:55,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:56,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:56,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561118810] [2024-06-28 03:33:56,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561118810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:56,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:56,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:33:56,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886772717] [2024-06-28 03:33:56,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:56,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:33:56,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:56,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:33:56,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:33:56,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:33:56,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 586 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:56,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:56,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:33:56,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:57,462 INFO L124 PetriNetUnfolderBase]: 10152/14073 cut-off events. [2024-06-28 03:33:57,462 INFO L125 PetriNetUnfolderBase]: For 48781/48781 co-relation queries the response was YES. [2024-06-28 03:33:57,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52494 conditions, 14073 events. 10152/14073 cut-off events. For 48781/48781 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 75319 event pairs, 4511 based on Foata normal form. 12/14078 useless extension candidates. Maximal degree in co-relation 52465. Up to 13615 conditions per place. [2024-06-28 03:33:57,560 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 98 selfloop transitions, 27 changer transitions 0/131 dead transitions. [2024-06-28 03:33:57,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 1143 flow [2024-06-28 03:33:57,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:33:57,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:33:57,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 03:33:57,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2024-06-28 03:33:57,562 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 586 flow. Second operand 7 states and 168 transitions. [2024-06-28 03:33:57,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 1143 flow [2024-06-28 03:33:57,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 131 transitions, 1099 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 03:33:57,596 INFO L231 Difference]: Finished difference. Result has 81 places, 100 transitions, 823 flow [2024-06-28 03:33:57,597 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=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=823, PETRI_PLACES=81, PETRI_TRANSITIONS=100} [2024-06-28 03:33:57,597 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-06-28 03:33:57,597 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 100 transitions, 823 flow [2024-06-28 03:33:57,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:57,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:57,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:57,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:33:57,598 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:57,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:57,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1317948146, now seen corresponding path program 2 times [2024-06-28 03:33:57,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:57,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816958030] [2024-06-28 03:33:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:57,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:33:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:33:58,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:33:58,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816958030] [2024-06-28 03:33:58,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816958030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:33:58,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:33:58,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:33:58,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087363572] [2024-06-28 03:33:58,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:33:58,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:33:58,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:33:58,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:33:58,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:33:58,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:33:58,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 100 transitions, 823 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:58,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:33:58,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:33:58,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:33:59,811 INFO L124 PetriNetUnfolderBase]: 10122/14034 cut-off events. [2024-06-28 03:33:59,811 INFO L125 PetriNetUnfolderBase]: For 56189/56189 co-relation queries the response was YES. [2024-06-28 03:33:59,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53827 conditions, 14034 events. 10122/14034 cut-off events. For 56189/56189 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 75277 event pairs, 4736 based on Foata normal form. 6/14035 useless extension candidates. Maximal degree in co-relation 53796. Up to 13739 conditions per place. [2024-06-28 03:33:59,913 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 104 selfloop transitions, 15 changer transitions 0/125 dead transitions. [2024-06-28 03:33:59,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 125 transitions, 1139 flow [2024-06-28 03:33:59,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:33:59,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:33:59,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 03:33:59,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477124183006536 [2024-06-28 03:33:59,916 INFO L175 Difference]: Start difference. First operand has 81 places, 100 transitions, 823 flow. Second operand 6 states and 146 transitions. [2024-06-28 03:33:59,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 125 transitions, 1139 flow [2024-06-28 03:33:59,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 125 transitions, 1114 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 03:33:59,964 INFO L231 Difference]: Finished difference. Result has 85 places, 101 transitions, 855 flow [2024-06-28 03:33:59,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=855, PETRI_PLACES=85, PETRI_TRANSITIONS=101} [2024-06-28 03:33:59,965 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-06-28 03:33:59,965 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 101 transitions, 855 flow [2024-06-28 03:33:59,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:33:59,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:33:59,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:33:59,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:33:59,965 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:33:59,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:33:59,966 INFO L85 PathProgramCache]: Analyzing trace with hash 433752404, now seen corresponding path program 3 times [2024-06-28 03:33:59,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:33:59,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134209374] [2024-06-28 03:33:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:33:59,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:33:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:00,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:00,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134209374] [2024-06-28 03:34:00,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134209374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:00,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:00,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:00,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182063833] [2024-06-28 03:34:00,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:00,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:00,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:00,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:00,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:00,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 101 transitions, 855 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:00,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:00,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:00,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:02,169 INFO L124 PetriNetUnfolderBase]: 10311/14315 cut-off events. [2024-06-28 03:34:02,169 INFO L125 PetriNetUnfolderBase]: For 66530/66530 co-relation queries the response was YES. [2024-06-28 03:34:02,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56604 conditions, 14315 events. 10311/14315 cut-off events. For 66530/66530 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 76875 event pairs, 4489 based on Foata normal form. 12/14322 useless extension candidates. Maximal degree in co-relation 56571. Up to 13622 conditions per place. [2024-06-28 03:34:02,255 INFO L140 encePairwiseOnDemand]: 35/51 looper letters, 108 selfloop transitions, 58 changer transitions 0/172 dead transitions. [2024-06-28 03:34:02,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 172 transitions, 1716 flow [2024-06-28 03:34:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:02,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-06-28 03:34:02,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042016806722689 [2024-06-28 03:34:02,256 INFO L175 Difference]: Start difference. First operand has 85 places, 101 transitions, 855 flow. Second operand 7 states and 180 transitions. [2024-06-28 03:34:02,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 172 transitions, 1716 flow [2024-06-28 03:34:02,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 172 transitions, 1661 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:02,302 INFO L231 Difference]: Finished difference. Result has 91 places, 134 transitions, 1391 flow [2024-06-28 03:34:02,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1391, PETRI_PLACES=91, PETRI_TRANSITIONS=134} [2024-06-28 03:34:02,303 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 37 predicate places. [2024-06-28 03:34:02,303 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 134 transitions, 1391 flow [2024-06-28 03:34:02,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:02,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:02,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:02,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:34:02,304 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:02,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:02,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2093032436, now seen corresponding path program 1 times [2024-06-28 03:34:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:02,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445847156] [2024-06-28 03:34:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:02,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:03,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:03,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445847156] [2024-06-28 03:34:03,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445847156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:03,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:03,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:03,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453300513] [2024-06-28 03:34:03,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:03,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:03,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:03,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:03,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:03,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:03,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 134 transitions, 1391 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:03,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:03,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:03,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:05,649 INFO L124 PetriNetUnfolderBase]: 12597/17418 cut-off events. [2024-06-28 03:34:05,649 INFO L125 PetriNetUnfolderBase]: For 93755/93755 co-relation queries the response was YES. [2024-06-28 03:34:05,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71019 conditions, 17418 events. 12597/17418 cut-off events. For 93755/93755 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 93592 event pairs, 5662 based on Foata normal form. 6/17421 useless extension candidates. Maximal degree in co-relation 70983. Up to 17010 conditions per place. [2024-06-28 03:34:05,769 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 146 selfloop transitions, 21 changer transitions 0/172 dead transitions. [2024-06-28 03:34:05,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 172 transitions, 1900 flow [2024-06-28 03:34:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 03:34:05,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4565826330532213 [2024-06-28 03:34:05,771 INFO L175 Difference]: Start difference. First operand has 91 places, 134 transitions, 1391 flow. Second operand 7 states and 163 transitions. [2024-06-28 03:34:05,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 172 transitions, 1900 flow [2024-06-28 03:34:05,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 172 transitions, 1829 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:05,864 INFO L231 Difference]: Finished difference. Result has 96 places, 141 transitions, 1464 flow [2024-06-28 03:34:05,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1464, PETRI_PLACES=96, PETRI_TRANSITIONS=141} [2024-06-28 03:34:05,864 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2024-06-28 03:34:05,865 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 141 transitions, 1464 flow [2024-06-28 03:34:05,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:05,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:05,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:05,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:34:05,865 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:05,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:05,866 INFO L85 PathProgramCache]: Analyzing trace with hash 908405587, now seen corresponding path program 1 times [2024-06-28 03:34:05,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:05,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818307937] [2024-06-28 03:34:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:05,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:06,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:06,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:06,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818307937] [2024-06-28 03:34:06,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818307937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:06,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:06,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:34:06,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490525350] [2024-06-28 03:34:06,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:06,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:34:06,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:06,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:34:06,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:34:06,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:06,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 141 transitions, 1464 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:06,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:06,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:06,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:08,211 INFO L124 PetriNetUnfolderBase]: 12583/17332 cut-off events. [2024-06-28 03:34:08,212 INFO L125 PetriNetUnfolderBase]: For 107682/107682 co-relation queries the response was YES. [2024-06-28 03:34:08,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74625 conditions, 17332 events. 12583/17332 cut-off events. For 107682/107682 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 92001 event pairs, 5735 based on Foata normal form. 4/17333 useless extension candidates. Maximal degree in co-relation 74586. Up to 17049 conditions per place. [2024-06-28 03:34:08,335 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 143 selfloop transitions, 11 changer transitions 0/159 dead transitions. [2024-06-28 03:34:08,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 159 transitions, 1852 flow [2024-06-28 03:34:08,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:34:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:34:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 03:34:08,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-06-28 03:34:08,337 INFO L175 Difference]: Start difference. First operand has 96 places, 141 transitions, 1464 flow. Second operand 5 states and 115 transitions. [2024-06-28 03:34:08,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 159 transitions, 1852 flow [2024-06-28 03:34:08,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 159 transitions, 1790 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 03:34:08,444 INFO L231 Difference]: Finished difference. Result has 97 places, 145 transitions, 1479 flow [2024-06-28 03:34:08,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1479, PETRI_PLACES=97, PETRI_TRANSITIONS=145} [2024-06-28 03:34:08,444 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-28 03:34:08,444 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 145 transitions, 1479 flow [2024-06-28 03:34:08,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:08,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:08,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:08,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:34:08,445 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 03:34:08,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:08,445 INFO L85 PathProgramCache]: Analyzing trace with hash -697568913, now seen corresponding path program 1 times [2024-06-28 03:34:08,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:08,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302350497] [2024-06-28 03:34:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:08,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:09,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:09,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302350497] [2024-06-28 03:34:09,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302350497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:09,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:09,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:09,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710163905] [2024-06-28 03:34:09,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:09,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:09,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:09,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:09,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:09,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:09,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 145 transitions, 1479 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:09,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:09,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:09,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:11,397 INFO L124 PetriNetUnfolderBase]: 12254/16942 cut-off events. [2024-06-28 03:34:11,397 INFO L125 PetriNetUnfolderBase]: For 124812/124824 co-relation queries the response was YES. [2024-06-28 03:34:11,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76575 conditions, 16942 events. 12254/16942 cut-off events. For 124812/124824 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 92355 event pairs, 4827 based on Foata normal form. 10/16934 useless extension candidates. Maximal degree in co-relation 76535. Up to 15777 conditions per place. [2024-06-28 03:34:11,549 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 105 selfloop transitions, 85 changer transitions 0/197 dead transitions. [2024-06-28 03:34:11,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 197 transitions, 2209 flow [2024-06-28 03:34:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:11,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-06-28 03:34:11,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5266106442577031 [2024-06-28 03:34:11,551 INFO L175 Difference]: Start difference. First operand has 97 places, 145 transitions, 1479 flow. Second operand 7 states and 188 transitions. [2024-06-28 03:34:11,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 197 transitions, 2209 flow [2024-06-28 03:34:11,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 197 transitions, 2162 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:11,689 INFO L231 Difference]: Finished difference. Result has 101 places, 153 transitions, 1701 flow [2024-06-28 03:34:11,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1701, PETRI_PLACES=101, PETRI_TRANSITIONS=153} [2024-06-28 03:34:11,690 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 47 predicate places. [2024-06-28 03:34:11,690 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 153 transitions, 1701 flow [2024-06-28 03:34:11,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:11,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:11,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:11,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:34:11,691 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 03:34:11,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:11,691 INFO L85 PathProgramCache]: Analyzing trace with hash -697478703, now seen corresponding path program 2 times [2024-06-28 03:34:11,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:11,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68068552] [2024-06-28 03:34:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:11,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:12,755 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 03:34:12,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:12,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68068552] [2024-06-28 03:34:12,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68068552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:12,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:12,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:12,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988674450] [2024-06-28 03:34:12,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:12,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:12,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:12,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:12,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:12,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 153 transitions, 1701 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:12,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:12,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:12,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:14,852 INFO L124 PetriNetUnfolderBase]: 12298/17007 cut-off events. [2024-06-28 03:34:14,853 INFO L125 PetriNetUnfolderBase]: For 149650/149650 co-relation queries the response was YES. [2024-06-28 03:34:14,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81222 conditions, 17007 events. 12298/17007 cut-off events. For 149650/149650 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 92664 event pairs, 4923 based on Foata normal form. 6/17004 useless extension candidates. Maximal degree in co-relation 81181. Up to 16219 conditions per place. [2024-06-28 03:34:15,000 INFO L140 encePairwiseOnDemand]: 36/51 looper letters, 126 selfloop transitions, 62 changer transitions 0/195 dead transitions. [2024-06-28 03:34:15,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 195 transitions, 2269 flow [2024-06-28 03:34:15,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 03:34:15,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632352941176471 [2024-06-28 03:34:15,002 INFO L175 Difference]: Start difference. First operand has 101 places, 153 transitions, 1701 flow. Second operand 8 states and 189 transitions. [2024-06-28 03:34:15,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 195 transitions, 2269 flow [2024-06-28 03:34:15,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 195 transitions, 2147 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:15,181 INFO L231 Difference]: Finished difference. Result has 106 places, 157 transitions, 1773 flow [2024-06-28 03:34:15,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1773, PETRI_PLACES=106, PETRI_TRANSITIONS=157} [2024-06-28 03:34:15,181 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2024-06-28 03:34:15,181 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 157 transitions, 1773 flow [2024-06-28 03:34:15,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:15,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:15,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:15,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:34:15,182 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 03:34:15,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:15,183 INFO L85 PathProgramCache]: Analyzing trace with hash -459503983, now seen corresponding path program 1 times [2024-06-28 03:34:15,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:15,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787623720] [2024-06-28 03:34:15,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:15,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:16,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787623720] [2024-06-28 03:34:16,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787623720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:16,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:16,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:16,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96353616] [2024-06-28 03:34:16,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:16,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:16,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:16,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:16,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:16,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:16,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 157 transitions, 1773 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:16,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:16,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:16,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:18,319 INFO L124 PetriNetUnfolderBase]: 12786/17599 cut-off events. [2024-06-28 03:34:18,319 INFO L125 PetriNetUnfolderBase]: For 167463/167463 co-relation queries the response was YES. [2024-06-28 03:34:18,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86005 conditions, 17599 events. 12786/17599 cut-off events. For 167463/167463 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 93368 event pairs, 5645 based on Foata normal form. 3/17599 useless extension candidates. Maximal degree in co-relation 85962. Up to 17237 conditions per place. [2024-06-28 03:34:18,466 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 164 selfloop transitions, 31 changer transitions 0/200 dead transitions. [2024-06-28 03:34:18,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 200 transitions, 2432 flow [2024-06-28 03:34:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:34:18,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:34:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 03:34:18,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45938375350140054 [2024-06-28 03:34:18,468 INFO L175 Difference]: Start difference. First operand has 106 places, 157 transitions, 1773 flow. Second operand 7 states and 164 transitions. [2024-06-28 03:34:18,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 200 transitions, 2432 flow [2024-06-28 03:34:18,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 200 transitions, 2270 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:18,671 INFO L231 Difference]: Finished difference. Result has 107 places, 166 transitions, 1864 flow [2024-06-28 03:34:18,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1864, PETRI_PLACES=107, PETRI_TRANSITIONS=166} [2024-06-28 03:34:18,672 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-28 03:34:18,672 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 166 transitions, 1864 flow [2024-06-28 03:34:18,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:18,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:18,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:18,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:34:18,673 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:18,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:18,673 INFO L85 PathProgramCache]: Analyzing trace with hash 919831189, now seen corresponding path program 3 times [2024-06-28 03:34:18,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:18,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576162884] [2024-06-28 03:34:18,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:18,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:19,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:19,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576162884] [2024-06-28 03:34:19,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576162884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:19,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:19,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:19,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795321450] [2024-06-28 03:34:19,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:19,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:19,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:19,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:19,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:19,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 166 transitions, 1864 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:19,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:19,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:19,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:21,767 INFO L124 PetriNetUnfolderBase]: 12353/17093 cut-off events. [2024-06-28 03:34:21,768 INFO L125 PetriNetUnfolderBase]: For 179068/179075 co-relation queries the response was YES. [2024-06-28 03:34:21,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84253 conditions, 17093 events. 12353/17093 cut-off events. For 179068/179075 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 93188 event pairs, 4844 based on Foata normal form. 12/17090 useless extension candidates. Maximal degree in co-relation 84209. Up to 16231 conditions per place. [2024-06-28 03:34:21,918 INFO L140 encePairwiseOnDemand]: 34/51 looper letters, 137 selfloop transitions, 74 changer transitions 0/218 dead transitions. [2024-06-28 03:34:21,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 218 transitions, 2541 flow [2024-06-28 03:34:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:21,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:21,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 03:34:21,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 03:34:21,920 INFO L175 Difference]: Start difference. First operand has 107 places, 166 transitions, 1864 flow. Second operand 8 states and 204 transitions. [2024-06-28 03:34:21,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 218 transitions, 2541 flow [2024-06-28 03:34:22,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 218 transitions, 2402 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:22,183 INFO L231 Difference]: Finished difference. Result has 109 places, 170 transitions, 1930 flow [2024-06-28 03:34:22,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1930, PETRI_PLACES=109, PETRI_TRANSITIONS=170} [2024-06-28 03:34:22,184 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-28 03:34:22,184 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 170 transitions, 1930 flow [2024-06-28 03:34:22,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:22,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:22,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:22,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:34:22,185 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:22,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:22,185 INFO L85 PathProgramCache]: Analyzing trace with hash -149858477, now seen corresponding path program 1 times [2024-06-28 03:34:22,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:22,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246258975] [2024-06-28 03:34:22,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:22,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:23,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:23,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246258975] [2024-06-28 03:34:23,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246258975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:23,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:23,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:23,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018263007] [2024-06-28 03:34:23,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:23,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:23,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:23,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:23,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:23,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:23,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 170 transitions, 1930 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:23,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:23,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:23,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:25,598 INFO L124 PetriNetUnfolderBase]: 12864/17879 cut-off events. [2024-06-28 03:34:25,599 INFO L125 PetriNetUnfolderBase]: For 208662/208673 co-relation queries the response was YES. [2024-06-28 03:34:25,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89779 conditions, 17879 events. 12864/17879 cut-off events. For 208662/208673 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 99183 event pairs, 3616 based on Foata normal form. 28/17890 useless extension candidates. Maximal degree in co-relation 89734. Up to 15687 conditions per place. [2024-06-28 03:34:25,778 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 134 selfloop transitions, 97 changer transitions 0/238 dead transitions. [2024-06-28 03:34:25,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 238 transitions, 2802 flow [2024-06-28 03:34:25,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:25,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-28 03:34:25,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2024-06-28 03:34:25,780 INFO L175 Difference]: Start difference. First operand has 109 places, 170 transitions, 1930 flow. Second operand 8 states and 214 transitions. [2024-06-28 03:34:25,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 238 transitions, 2802 flow [2024-06-28 03:34:26,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 238 transitions, 2624 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:34:26,036 INFO L231 Difference]: Finished difference. Result has 112 places, 180 transitions, 2143 flow [2024-06-28 03:34:26,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2143, PETRI_PLACES=112, PETRI_TRANSITIONS=180} [2024-06-28 03:34:26,036 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-06-28 03:34:26,037 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 180 transitions, 2143 flow [2024-06-28 03:34:26,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:26,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:26,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:26,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:34:26,037 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:26,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:26,038 INFO L85 PathProgramCache]: Analyzing trace with hash -149798027, now seen corresponding path program 2 times [2024-06-28 03:34:26,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:26,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006850758] [2024-06-28 03:34:26,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:26,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:27,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:27,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006850758] [2024-06-28 03:34:27,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006850758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:27,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:27,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:27,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82306977] [2024-06-28 03:34:27,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:27,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:27,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:27,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:27,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:27,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 51 [2024-06-28 03:34:27,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 180 transitions, 2143 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:27,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:27,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 51 [2024-06-28 03:34:27,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:29,552 INFO L124 PetriNetUnfolderBase]: 12998/18104 cut-off events. [2024-06-28 03:34:29,552 INFO L125 PetriNetUnfolderBase]: For 239811/239813 co-relation queries the response was YES. [2024-06-28 03:34:29,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93934 conditions, 18104 events. 12998/18104 cut-off events. For 239811/239813 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 100834 event pairs, 4642 based on Foata normal form. 42/18139 useless extension candidates. Maximal degree in co-relation 93886. Up to 16492 conditions per place. [2024-06-28 03:34:29,747 INFO L140 encePairwiseOnDemand]: 37/51 looper letters, 135 selfloop transitions, 103 changer transitions 0/245 dead transitions. [2024-06-28 03:34:29,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 245 transitions, 2892 flow [2024-06-28 03:34:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:29,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:29,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 03:34:29,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-06-28 03:34:29,749 INFO L175 Difference]: Start difference. First operand has 112 places, 180 transitions, 2143 flow. Second operand 9 states and 234 transitions. [2024-06-28 03:34:29,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 245 transitions, 2892 flow [2024-06-28 03:34:30,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 245 transitions, 2799 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 03:34:30,072 INFO L231 Difference]: Finished difference. Result has 118 places, 183 transitions, 2329 flow [2024-06-28 03:34:30,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2050, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2329, PETRI_PLACES=118, PETRI_TRANSITIONS=183} [2024-06-28 03:34:30,073 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-28 03:34:30,073 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 183 transitions, 2329 flow [2024-06-28 03:34:30,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:30,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:30,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:30,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:34:30,074 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:30,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:30,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1313232230, now seen corresponding path program 1 times [2024-06-28 03:34:30,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:30,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530891208] [2024-06-28 03:34:30,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:30,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:30,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:30,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530891208] [2024-06-28 03:34:30,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530891208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:30,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:30,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:34:30,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98030692] [2024-06-28 03:34:30,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:30,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:34:30,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:30,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:34:30,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:34:30,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:30,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 183 transitions, 2329 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:30,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:30,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:30,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:33,041 INFO L124 PetriNetUnfolderBase]: 13534/18746 cut-off events. [2024-06-28 03:34:33,041 INFO L125 PetriNetUnfolderBase]: For 260970/260982 co-relation queries the response was YES. [2024-06-28 03:34:33,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100268 conditions, 18746 events. 13534/18746 cut-off events. For 260970/260982 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 101444 event pairs, 5395 based on Foata normal form. 16/18758 useless extension candidates. Maximal degree in co-relation 100218. Up to 18346 conditions per place. [2024-06-28 03:34:33,247 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 191 selfloop transitions, 28 changer transitions 0/224 dead transitions. [2024-06-28 03:34:33,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 224 transitions, 3035 flow [2024-06-28 03:34:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:34:33,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:34:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 03:34:33,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738562091503268 [2024-06-28 03:34:33,248 INFO L175 Difference]: Start difference. First operand has 118 places, 183 transitions, 2329 flow. Second operand 6 states and 145 transitions. [2024-06-28 03:34:33,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 224 transitions, 3035 flow [2024-06-28 03:34:33,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 224 transitions, 2802 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 03:34:33,721 INFO L231 Difference]: Finished difference. Result has 118 places, 195 transitions, 2294 flow [2024-06-28 03:34:33,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2294, PETRI_PLACES=118, PETRI_TRANSITIONS=195} [2024-06-28 03:34:33,722 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2024-06-28 03:34:33,722 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 195 transitions, 2294 flow [2024-06-28 03:34:33,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:33,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:33,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:33,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:34:33,723 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:33,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:33,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1378925619, now seen corresponding path program 1 times [2024-06-28 03:34:33,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:33,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556190263] [2024-06-28 03:34:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:33,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:35,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:35,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556190263] [2024-06-28 03:34:35,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556190263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:35,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:35,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:35,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983783180] [2024-06-28 03:34:35,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:35,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:35,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:35,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:35,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:35,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 195 transitions, 2294 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:35,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:35,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:35,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:37,462 INFO L124 PetriNetUnfolderBase]: 13570/18824 cut-off events. [2024-06-28 03:34:37,463 INFO L125 PetriNetUnfolderBase]: For 289483/289483 co-relation queries the response was YES. [2024-06-28 03:34:37,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103744 conditions, 18824 events. 13570/18824 cut-off events. For 289483/289483 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 102040 event pairs, 5541 based on Foata normal form. 6/18827 useless extension candidates. Maximal degree in co-relation 103692. Up to 18381 conditions per place. [2024-06-28 03:34:37,639 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 208 selfloop transitions, 27 changer transitions 0/240 dead transitions. [2024-06-28 03:34:37,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 240 transitions, 2959 flow [2024-06-28 03:34:37,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:37,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:37,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 03:34:37,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-06-28 03:34:37,641 INFO L175 Difference]: Start difference. First operand has 118 places, 195 transitions, 2294 flow. Second operand 8 states and 185 transitions. [2024-06-28 03:34:37,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 240 transitions, 2959 flow [2024-06-28 03:34:38,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 240 transitions, 2919 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-28 03:34:38,222 INFO L231 Difference]: Finished difference. Result has 125 places, 198 transitions, 2379 flow [2024-06-28 03:34:38,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2254, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2379, PETRI_PLACES=125, PETRI_TRANSITIONS=198} [2024-06-28 03:34:38,223 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-06-28 03:34:38,223 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 198 transitions, 2379 flow [2024-06-28 03:34:38,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:38,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:38,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:38,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:34:38,224 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:38,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash 162737577, now seen corresponding path program 2 times [2024-06-28 03:34:38,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:38,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610335077] [2024-06-28 03:34:38,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:38,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:39,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:39,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:39,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610335077] [2024-06-28 03:34:39,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610335077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:39,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:39,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:39,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322715072] [2024-06-28 03:34:39,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:39,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:39,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:39,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:39,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:39,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:39,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 198 transitions, 2379 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:39,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:39,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:39,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:42,823 INFO L124 PetriNetUnfolderBase]: 13606/18876 cut-off events. [2024-06-28 03:34:42,823 INFO L125 PetriNetUnfolderBase]: For 316865/316865 co-relation queries the response was YES. [2024-06-28 03:34:42,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106138 conditions, 18876 events. 13606/18876 cut-off events. For 316865/316865 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 102332 event pairs, 5380 based on Foata normal form. 6/18879 useless extension candidates. Maximal degree in co-relation 106083. Up to 18432 conditions per place. [2024-06-28 03:34:42,958 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 211 selfloop transitions, 24 changer transitions 0/240 dead transitions. [2024-06-28 03:34:42,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 240 transitions, 3021 flow [2024-06-28 03:34:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:42,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 03:34:42,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534313725490196 [2024-06-28 03:34:42,960 INFO L175 Difference]: Start difference. First operand has 125 places, 198 transitions, 2379 flow. Second operand 8 states and 185 transitions. [2024-06-28 03:34:42,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 240 transitions, 3021 flow [2024-06-28 03:34:43,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 240 transitions, 2937 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:43,425 INFO L231 Difference]: Finished difference. Result has 128 places, 201 transitions, 2411 flow [2024-06-28 03:34:43,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2411, PETRI_PLACES=128, PETRI_TRANSITIONS=201} [2024-06-28 03:34:43,425 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-28 03:34:43,425 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 201 transitions, 2411 flow [2024-06-28 03:34:43,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:43,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:43,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:43,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:34:43,426 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:43,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:43,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1249115695, now seen corresponding path program 1 times [2024-06-28 03:34:43,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:43,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244958301] [2024-06-28 03:34:43,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:43,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:44,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:44,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244958301] [2024-06-28 03:34:44,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244958301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:44,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:44,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:34:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058734367] [2024-06-28 03:34:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:44,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:34:44,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:44,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:34:44,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:34:44,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:44,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 201 transitions, 2411 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 03:34:44,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:44,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:44,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:47,543 INFO L124 PetriNetUnfolderBase]: 13561/18789 cut-off events. [2024-06-28 03:34:47,543 INFO L125 PetriNetUnfolderBase]: For 346411/346458 co-relation queries the response was YES. [2024-06-28 03:34:47,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108526 conditions, 18789 events. 13561/18789 cut-off events. For 346411/346458 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 101687 event pairs, 5155 based on Foata normal form. 45/18830 useless extension candidates. Maximal degree in co-relation 108470. Up to 17639 conditions per place. [2024-06-28 03:34:47,701 INFO L140 encePairwiseOnDemand]: 39/51 looper letters, 141 selfloop transitions, 90 changer transitions 0/236 dead transitions. [2024-06-28 03:34:47,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 236 transitions, 3000 flow [2024-06-28 03:34:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:34:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:34:47,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-28 03:34:47,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-06-28 03:34:47,702 INFO L175 Difference]: Start difference. First operand has 128 places, 201 transitions, 2411 flow. Second operand 6 states and 156 transitions. [2024-06-28 03:34:47,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 236 transitions, 3000 flow [2024-06-28 03:34:48,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 236 transitions, 2902 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 03:34:48,131 INFO L231 Difference]: Finished difference. Result has 128 places, 201 transitions, 2529 flow [2024-06-28 03:34:48,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2313, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2529, PETRI_PLACES=128, PETRI_TRANSITIONS=201} [2024-06-28 03:34:48,132 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-28 03:34:48,132 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 201 transitions, 2529 flow [2024-06-28 03:34:48,133 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 03:34:48,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:48,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:48,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:34:48,133 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:48,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:48,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1359719603, now seen corresponding path program 3 times [2024-06-28 03:34:48,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:48,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886831034] [2024-06-28 03:34:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:48,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:48,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:49,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:49,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886831034] [2024-06-28 03:34:49,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886831034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:49,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:49,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:49,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879648396] [2024-06-28 03:34:49,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:49,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:49,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:49,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:49,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:49,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:49,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 201 transitions, 2529 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:49,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:49,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:49,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:52,586 INFO L124 PetriNetUnfolderBase]: 13546/18780 cut-off events. [2024-06-28 03:34:52,587 INFO L125 PetriNetUnfolderBase]: For 376867/376867 co-relation queries the response was YES. [2024-06-28 03:34:52,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110369 conditions, 18780 events. 13546/18780 cut-off events. For 376867/376867 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 101651 event pairs, 5526 based on Foata normal form. 6/18783 useless extension candidates. Maximal degree in co-relation 110312. Up to 18277 conditions per place. [2024-06-28 03:34:52,728 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 203 selfloop transitions, 38 changer transitions 0/246 dead transitions. [2024-06-28 03:34:52,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 246 transitions, 3210 flow [2024-06-28 03:34:52,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:34:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:34:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-06-28 03:34:52,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2024-06-28 03:34:52,729 INFO L175 Difference]: Start difference. First operand has 128 places, 201 transitions, 2529 flow. Second operand 9 states and 198 transitions. [2024-06-28 03:34:52,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 246 transitions, 3210 flow [2024-06-28 03:34:53,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 246 transitions, 3030 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 03:34:53,266 INFO L231 Difference]: Finished difference. Result has 132 places, 204 transitions, 2504 flow [2024-06-28 03:34:53,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2504, PETRI_PLACES=132, PETRI_TRANSITIONS=204} [2024-06-28 03:34:53,267 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 78 predicate places. [2024-06-28 03:34:53,267 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 204 transitions, 2504 flow [2024-06-28 03:34:53,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:53,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:53,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:53,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:34:53,268 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:53,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:53,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1606826769, now seen corresponding path program 4 times [2024-06-28 03:34:53,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:53,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778257000] [2024-06-28 03:34:53,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:53,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:54,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:54,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778257000] [2024-06-28 03:34:54,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778257000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:54,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:54,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:34:54,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106263219] [2024-06-28 03:34:54,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:54,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:34:54,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:54,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:34:54,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:34:54,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:54,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 204 transitions, 2504 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:54,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:54,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:54,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:34:57,496 INFO L124 PetriNetUnfolderBase]: 13531/18757 cut-off events. [2024-06-28 03:34:57,496 INFO L125 PetriNetUnfolderBase]: For 408058/408058 co-relation queries the response was YES. [2024-06-28 03:34:57,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112361 conditions, 18757 events. 13531/18757 cut-off events. For 408058/408058 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 101562 event pairs, 5513 based on Foata normal form. 6/18760 useless extension candidates. Maximal degree in co-relation 112303. Up to 18244 conditions per place. [2024-06-28 03:34:57,634 INFO L140 encePairwiseOnDemand]: 38/51 looper letters, 213 selfloop transitions, 41 changer transitions 0/259 dead transitions. [2024-06-28 03:34:57,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 259 transitions, 3329 flow [2024-06-28 03:34:57,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:34:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:34:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 03:34:57,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078431372549017 [2024-06-28 03:34:57,636 INFO L175 Difference]: Start difference. First operand has 132 places, 204 transitions, 2504 flow. Second operand 8 states and 188 transitions. [2024-06-28 03:34:57,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 259 transitions, 3329 flow [2024-06-28 03:34:58,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 259 transitions, 3204 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 03:34:58,168 INFO L231 Difference]: Finished difference. Result has 133 places, 213 transitions, 2650 flow [2024-06-28 03:34:58,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2379, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2650, PETRI_PLACES=133, PETRI_TRANSITIONS=213} [2024-06-28 03:34:58,179 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2024-06-28 03:34:58,180 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 213 transitions, 2650 flow [2024-06-28 03:34:58,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:58,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:34:58,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:34:58,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:34:58,180 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:34:58,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:34:58,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1099447154, now seen corresponding path program 2 times [2024-06-28 03:34:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:34:58,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111604767] [2024-06-28 03:34:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:34:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:34:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:34:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:34:58,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:34:58,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111604767] [2024-06-28 03:34:58,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111604767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:34:58,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:34:58,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:34:58,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984492356] [2024-06-28 03:34:58,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:34:58,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:34:58,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:34:58,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:34:58,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:34:58,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:34:58,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 213 transitions, 2650 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:34:58,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:34:59,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:34:59,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:01,824 INFO L124 PetriNetUnfolderBase]: 13517/18741 cut-off events. [2024-06-28 03:35:01,825 INFO L125 PetriNetUnfolderBase]: For 440274/440274 co-relation queries the response was YES. [2024-06-28 03:35:01,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114872 conditions, 18741 events. 13517/18741 cut-off events. For 440274/440274 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 101589 event pairs, 5521 based on Foata normal form. 4/18742 useless extension candidates. Maximal degree in co-relation 114813. Up to 18383 conditions per place. [2024-06-28 03:35:01,986 INFO L140 encePairwiseOnDemand]: 40/51 looper letters, 211 selfloop transitions, 15 changer transitions 0/231 dead transitions. [2024-06-28 03:35:01,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 231 transitions, 3158 flow [2024-06-28 03:35:01,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:01,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 03:35:01,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43790849673202614 [2024-06-28 03:35:01,988 INFO L175 Difference]: Start difference. First operand has 133 places, 213 transitions, 2650 flow. Second operand 6 states and 134 transitions. [2024-06-28 03:35:01,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 231 transitions, 3158 flow [2024-06-28 03:35:02,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 231 transitions, 2989 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-28 03:35:02,596 INFO L231 Difference]: Finished difference. Result has 134 places, 213 transitions, 2520 flow [2024-06-28 03:35:02,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2520, PETRI_PLACES=134, PETRI_TRANSITIONS=213} [2024-06-28 03:35:02,597 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 80 predicate places. [2024-06-28 03:35:02,597 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 213 transitions, 2520 flow [2024-06-28 03:35:02,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:02,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:02,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:02,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:35:02,598 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:02,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash -285258494, now seen corresponding path program 1 times [2024-06-28 03:35:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:02,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622156168] [2024-06-28 03:35:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:03,385 INFO 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 03:35:03,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:03,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622156168] [2024-06-28 03:35:03,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622156168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:03,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:03,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:35:03,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603557066] [2024-06-28 03:35:03,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:03,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:35:03,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:03,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:35:03,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:35:03,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:35:03,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 213 transitions, 2520 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:03,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:03,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:35:03,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:35:06,249 INFO L124 PetriNetUnfolderBase]: 13549/18781 cut-off events. [2024-06-28 03:35:06,249 INFO L125 PetriNetUnfolderBase]: For 466502/466502 co-relation queries the response was YES. [2024-06-28 03:35:06,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115754 conditions, 18781 events. 13549/18781 cut-off events. For 466502/466502 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 101807 event pairs, 5517 based on Foata normal form. 4/18781 useless extension candidates. Maximal degree in co-relation 115694. Up to 18372 conditions per place. [2024-06-28 03:35:06,426 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 215 selfloop transitions, 25 changer transitions 0/245 dead transitions. [2024-06-28 03:35:06,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 245 transitions, 3270 flow [2024-06-28 03:35:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:35:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:35:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-28 03:35:06,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673202614379085 [2024-06-28 03:35:06,427 INFO L175 Difference]: Start difference. First operand has 134 places, 213 transitions, 2520 flow. Second operand 6 states and 143 transitions. [2024-06-28 03:35:06,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 245 transitions, 3270 flow [2024-06-28 03:35:07,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 245 transitions, 3208 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 03:35:07,299 INFO L231 Difference]: Finished difference. Result has 135 places, 221 transitions, 2625 flow [2024-06-28 03:35:07,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2458, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2625, PETRI_PLACES=135, PETRI_TRANSITIONS=221} [2024-06-28 03:35:07,299 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-06-28 03:35:07,299 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 221 transitions, 2625 flow [2024-06-28 03:35:07,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:07,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:35:07,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:35:07,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:35:07,300 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 03:35:07,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:35:07,301 INFO L85 PathProgramCache]: Analyzing trace with hash -238029374, now seen corresponding path program 2 times [2024-06-28 03:35:07,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:35:07,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428880832] [2024-06-28 03:35:07,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:35:07,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:35:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:35:07,926 INFO 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 03:35:07,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:35:07,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428880832] [2024-06-28 03:35:07,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428880832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:35:07,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:35:07,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:35:07,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527744469] [2024-06-28 03:35:07,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:35:07,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:35:07,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:35:07,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:35:07,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:35:07,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2024-06-28 03:35:07,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 221 transitions, 2625 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:35:07,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:35:07,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2024-06-28 03:35:07,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand