./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix042.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix042.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/mix042.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix042.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:37:24,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:37:24,770 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:37:24,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:37:24,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:37:24,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:37:24,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:37:24,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:37:24,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:37:24,818 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:37:24,818 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:37:24,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:37:24,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:37:24,821 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:37:24,821 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:37:24,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:37:24,822 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:37:24,822 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:37:24,822 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:37:24,822 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:37:24,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:37:24,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:37:24,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:37:24,824 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:37:24,824 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:37:24,824 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:37:24,824 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:37:24,825 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:37:24,825 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:37:24,825 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:37:24,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:37:24,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:37:24,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:37:24,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:37:24,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:37:24,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:37:24,828 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:37:24,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:37:24,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:37:24,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:37:24,829 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:37:24,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:37:24,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:37:24,829 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:37:25,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:37:25,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:37:25,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:37:25,126 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:37:25,126 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:37:25,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix042.oepc.yml/witness.yml [2024-06-28 01:37:25,342 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:37:25,343 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:37:25,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix042.oepc.i [2024-06-28 01:37:26,446 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:37:26,752 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:37:26,753 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix042.oepc.i [2024-06-28 01:37:26,767 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12101b2d/2fdafd59066f4e61bb83b8a44bf2588b/FLAGea699bf19 [2024-06-28 01:37:26,780 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f12101b2d/2fdafd59066f4e61bb83b8a44bf2588b [2024-06-28 01:37:26,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:37:26,783 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:37:26,786 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:37:26,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:37:26,791 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:37:26,791 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:37:25" (1/2) ... [2024-06-28 01:37:26,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba63f10 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:26, skipping insertion in model container [2024-06-28 01:37:26,792 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:37:25" (1/2) ... [2024-06-28 01:37:26,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@436f1cf2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:26, skipping insertion in model container [2024-06-28 01:37:26,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:37:26" (2/2) ... [2024-06-28 01:37:26,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ba63f10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:26, skipping insertion in model container [2024-06-28 01:37:26,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:37:26" (2/2) ... [2024-06-28 01:37:26,795 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:37:26,891 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:37:26,892 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((! multithreaded || a$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (z == 0 || z == 1)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 01:37:26,893 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] (((((((((((((((((((! multithreaded || a$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (z == 0 || z == 1)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 01:37:26,893 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((! multithreaded || a$r_buff1_thd3 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((0 <= __unbuffered_cnt && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (a$w_buff0 == 0 || a$w_buff0 == 1)) && (a$w_buff1 == 0 || a$w_buff1 == 1)) && (x == 0 || x == 1)) && (z == 0 || z == 1)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 01:37:26,893 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:37:26,894 INFO L106 edCorrectnessWitness]: ghost_update [L844-L844] multithreaded = 1; [2024-06-28 01:37:26,941 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:37:27,125 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix042.oepc.i[945,958] [2024-06-28 01:37:27,355 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:37:27,367 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:37:27,415 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix042.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:37:27,525 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:37:27,581 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:37:27,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27 WrapperNode [2024-06-28 01:37:27,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:37:27,583 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:37:27,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:37:27,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:37:27,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (1/1) ... [2024-06-28 01:37:27,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (1/1) ... [2024-06-28 01:37:27,650 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 123 [2024-06-28 01:37:27,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:37:27,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:37:27,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:37:27,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:37:27,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (1/1) ... [2024-06-28 01:37:27,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (1/1) ... [2024-06-28 01:37:27,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (1/1) ... [2024-06-28 01:37:27,683 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 01:37:27,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (1/1) ... [2024-06-28 01:37:27,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (1/1) ... [2024-06-28 01:37:27,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (1/1) ... [2024-06-28 01:37:27,712 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (1/1) ... [2024-06-28 01:37:27,714 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (1/1) ... [2024-06-28 01:37:27,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (1/1) ... [2024-06-28 01:37:27,726 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:37:27,729 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:37:27,729 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:37:27,730 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:37:27,731 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (1/1) ... [2024-06-28 01:37:27,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:37:27,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:37:27,765 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 01:37:27,792 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 01:37:27,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:37:27,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:37:27,810 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:37:27,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:37:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:37:27,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:37:27,811 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:37:27,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:37:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:37:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:37:27,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:37:27,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:37:27,814 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 01:37:27,926 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:37:27,927 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:37:28,342 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:37:28,342 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:37:28,562 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:37:28,563 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:37:28,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:37:28 BoogieIcfgContainer [2024-06-28 01:37:28,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:37:28,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:37:28,565 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:37:28,568 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:37:28,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:37:25" (1/4) ... [2024-06-28 01:37:28,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75609a7c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:37:28, skipping insertion in model container [2024-06-28 01:37:28,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:37:26" (2/4) ... [2024-06-28 01:37:28,569 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75609a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:37:28, skipping insertion in model container [2024-06-28 01:37:28,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:27" (3/4) ... [2024-06-28 01:37:28,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75609a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:37:28, skipping insertion in model container [2024-06-28 01:37:28,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:37:28" (4/4) ... [2024-06-28 01:37:28,571 INFO L112 eAbstractionObserver]: Analyzing ICFG mix042.oepc.i [2024-06-28 01:37:28,586 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:37:28,586 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:37:28,586 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:37:28,630 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:37:28,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:37:28,695 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-28 01:37:28,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:37:28,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-28 01:37:28,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-28 01:37:28,705 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-28 01:37:28,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:37:28,727 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;@3e7c0ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:37:28,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:37:28,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:37:28,732 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:37:28,732 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:37:28,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:28,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:37:28,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:28,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:28,743 INFO L85 PathProgramCache]: Analyzing trace with hash 359830693, now seen corresponding path program 1 times [2024-06-28 01:37:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:28,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469228133] [2024-06-28 01:37:28,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:28,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:29,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:29,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469228133] [2024-06-28 01:37:29,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469228133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:29,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:29,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:37:29,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008709533] [2024-06-28 01:37:29,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:29,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:37:29,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:29,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:37:29,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:37:29,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:37:29,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:29,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:29,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:37:29,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:31,024 INFO L124 PetriNetUnfolderBase]: 4452/7191 cut-off events. [2024-06-28 01:37:31,024 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-28 01:37:31,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13664 conditions, 7191 events. 4452/7191 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 46493 event pairs, 3409 based on Foata normal form. 217/6782 useless extension candidates. Maximal degree in co-relation 13652. Up to 6370 conditions per place. [2024-06-28 01:37:31,071 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 42 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-06-28 01:37:31,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 227 flow [2024-06-28 01:37:31,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:37:31,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:37:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-28 01:37:31,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6736111111111112 [2024-06-28 01:37:31,084 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 97 transitions. [2024-06-28 01:37:31,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 227 flow [2024-06-28 01:37:31,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 222 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:31,089 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-06-28 01:37:31,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-28 01:37:31,093 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:37:31,094 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-06-28 01:37:31,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:31,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:31,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:37:31,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:37:31,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:31,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:31,095 INFO L85 PathProgramCache]: Analyzing trace with hash 359830807, now seen corresponding path program 1 times [2024-06-28 01:37:31,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:31,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923519758] [2024-06-28 01:37:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:31,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:31,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:31,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923519758] [2024-06-28 01:37:31,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923519758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:31,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:31,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:37:31,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700973341] [2024-06-28 01:37:31,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:31,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:37:31,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:31,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:37:31,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:37:31,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 48 [2024-06-28 01:37:31,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 01:37:31,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:31,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 48 [2024-06-28 01:37:31,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:31,536 INFO L124 PetriNetUnfolderBase]: 950/1823 cut-off events. [2024-06-28 01:37:31,537 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-28 01:37:31,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3525 conditions, 1823 events. 950/1823 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12204 event pairs, 463 based on Foata normal form. 0/1697 useless extension candidates. Maximal degree in co-relation 3513. Up to 1207 conditions per place. [2024-06-28 01:37:31,549 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 35 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-06-28 01:37:31,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 234 flow [2024-06-28 01:37:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:37:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:37:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-28 01:37:31,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222 [2024-06-28 01:37:31,554 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 3 states and 113 transitions. [2024-06-28 01:37:31,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 234 flow [2024-06-28 01:37:31,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:37:31,559 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 124 flow [2024-06-28 01:37:31,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 01:37:31,560 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-06-28 01:37:31,561 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 124 flow [2024-06-28 01:37:31,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 01:37:31,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:31,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:31,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:37:31,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:31,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:31,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2095024477, now seen corresponding path program 1 times [2024-06-28 01:37:31,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:31,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355743722] [2024-06-28 01:37:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:31,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:32,239 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 01:37:32,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:32,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355743722] [2024-06-28 01:37:32,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355743722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:32,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:32,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:37:32,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227642593] [2024-06-28 01:37:32,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:32,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:37:32,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:32,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:37:32,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:37:32,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-28 01:37:32,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:32,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:32,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-28 01:37:32,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:33,033 INFO L124 PetriNetUnfolderBase]: 3660/5862 cut-off events. [2024-06-28 01:37:33,034 INFO L125 PetriNetUnfolderBase]: For 1442/1442 co-relation queries the response was YES. [2024-06-28 01:37:33,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12560 conditions, 5862 events. 3660/5862 cut-off events. For 1442/1442 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 36151 event pairs, 2257 based on Foata normal form. 3/5637 useless extension candidates. Maximal degree in co-relation 12547. Up to 5239 conditions per place. [2024-06-28 01:37:33,065 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 50 selfloop transitions, 8 changer transitions 2/72 dead transitions. [2024-06-28 01:37:33,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 316 flow [2024-06-28 01:37:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:37:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:37:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-06-28 01:37:33,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-06-28 01:37:33,071 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 124 flow. Second operand 4 states and 120 transitions. [2024-06-28 01:37:33,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 316 flow [2024-06-28 01:37:33,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:37:33,075 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 185 flow [2024-06-28 01:37:33,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-28 01:37:33,076 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-06-28 01:37:33,077 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 185 flow [2024-06-28 01:37:33,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:33,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:33,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:33,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:37:33,078 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:33,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:33,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1021172898, now seen corresponding path program 1 times [2024-06-28 01:37:33,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:33,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455613892] [2024-06-28 01:37:33,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:33,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:34,401 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 01:37:34,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:34,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455613892] [2024-06-28 01:37:34,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455613892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:34,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:34,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:37:34,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257719071] [2024-06-28 01:37:34,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:34,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:37:34,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:34,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:37:34,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:37:34,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:34,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 185 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 01:37:34,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:34,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:34,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:35,322 INFO L124 PetriNetUnfolderBase]: 3811/5754 cut-off events. [2024-06-28 01:37:35,322 INFO L125 PetriNetUnfolderBase]: For 2535/2535 co-relation queries the response was YES. [2024-06-28 01:37:35,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13747 conditions, 5754 events. 3811/5754 cut-off events. For 2535/2535 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 32746 event pairs, 1547 based on Foata normal form. 3/5664 useless extension candidates. Maximal degree in co-relation 13732. Up to 5404 conditions per place. [2024-06-28 01:37:35,364 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 70 selfloop transitions, 21 changer transitions 0/102 dead transitions. [2024-06-28 01:37:35,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 102 transitions, 525 flow [2024-06-28 01:37:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:37:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:37:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-06-28 01:37:35,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-06-28 01:37:35,370 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 185 flow. Second operand 6 states and 170 transitions. [2024-06-28 01:37:35,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 102 transitions, 525 flow [2024-06-28 01:37:35,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 102 transitions, 508 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:37:35,375 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 303 flow [2024-06-28 01:37:35,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2024-06-28 01:37:35,376 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-06-28 01:37:35,377 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 303 flow [2024-06-28 01:37:35,377 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 01:37:35,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:35,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:35,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:37:35,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:35,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:35,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1591589873, now seen corresponding path program 1 times [2024-06-28 01:37:35,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:35,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627025496] [2024-06-28 01:37:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:35,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:36,889 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 01:37:36,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:36,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627025496] [2024-06-28 01:37:36,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627025496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:36,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:36,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:37:36,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233804660] [2024-06-28 01:37:36,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:36,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:37:36,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:36,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:37:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:37:36,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-28 01:37:36,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 303 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 01:37:36,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:36,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-28 01:37:36,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:37,876 INFO L124 PetriNetUnfolderBase]: 3815/6168 cut-off events. [2024-06-28 01:37:37,877 INFO L125 PetriNetUnfolderBase]: For 5468/5468 co-relation queries the response was YES. [2024-06-28 01:37:37,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15804 conditions, 6168 events. 3815/6168 cut-off events. For 5468/5468 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 38393 event pairs, 1400 based on Foata normal form. 6/5941 useless extension candidates. Maximal degree in co-relation 15785. Up to 5376 conditions per place. [2024-06-28 01:37:37,985 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 87 selfloop transitions, 16 changer transitions 0/114 dead transitions. [2024-06-28 01:37:37,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 114 transitions, 664 flow [2024-06-28 01:37:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-28 01:37:37,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 01:37:37,989 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 303 flow. Second operand 7 states and 192 transitions. [2024-06-28 01:37:37,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 114 transitions, 664 flow [2024-06-28 01:37:37,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 114 transitions, 633 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 01:37:37,996 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 368 flow [2024-06-28 01:37:37,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-06-28 01:37:37,997 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 16 predicate places. [2024-06-28 01:37:37,997 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 368 flow [2024-06-28 01:37:37,997 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 01:37:37,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:37,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:37,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:37:37,998 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:37,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:37,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1065156080, now seen corresponding path program 1 times [2024-06-28 01:37:37,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:37,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660953725] [2024-06-28 01:37:37,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:37,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:38,623 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 01:37:38,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:38,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660953725] [2024-06-28 01:37:38,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660953725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:38,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:38,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:37:38,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142254107] [2024-06-28 01:37:38,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:38,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:37:38,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:38,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:37:38,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:37:38,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:37:38,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 368 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 01:37:38,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:38,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:37:38,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:39,727 INFO L124 PetriNetUnfolderBase]: 4446/7238 cut-off events. [2024-06-28 01:37:39,727 INFO L125 PetriNetUnfolderBase]: For 8827/8827 co-relation queries the response was YES. [2024-06-28 01:37:39,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19123 conditions, 7238 events. 4446/7238 cut-off events. For 8827/8827 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 45983 event pairs, 2020 based on Foata normal form. 2/7021 useless extension candidates. Maximal degree in co-relation 19099. Up to 6340 conditions per place. [2024-06-28 01:37:39,771 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 69 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2024-06-28 01:37:39,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 588 flow [2024-06-28 01:37:39,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:37:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:37:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 01:37:39,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-28 01:37:39,773 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 368 flow. Second operand 5 states and 119 transitions. [2024-06-28 01:37:39,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 588 flow [2024-06-28 01:37:39,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 553 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:39,783 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 386 flow [2024-06-28 01:37:39,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2024-06-28 01:37:39,786 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-06-28 01:37:39,786 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 386 flow [2024-06-28 01:37:39,787 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 01:37:39,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:39,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:39,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:37:39,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:39,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:39,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1339898417, now seen corresponding path program 1 times [2024-06-28 01:37:39,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:39,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605616370] [2024-06-28 01:37:39,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:40,559 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 01:37:40,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:40,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605616370] [2024-06-28 01:37:40,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605616370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:40,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:40,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:37:40,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584929868] [2024-06-28 01:37:40,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:40,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:37:40,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:40,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:37:40,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:37:40,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:37:40,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 386 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 01:37:40,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:40,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:37:40,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:41,652 INFO L124 PetriNetUnfolderBase]: 4474/7270 cut-off events. [2024-06-28 01:37:41,652 INFO L125 PetriNetUnfolderBase]: For 11419/11419 co-relation queries the response was YES. [2024-06-28 01:37:41,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20159 conditions, 7270 events. 4474/7270 cut-off events. For 11419/11419 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 45896 event pairs, 1915 based on Foata normal form. 6/7095 useless extension candidates. Maximal degree in co-relation 20133. Up to 6258 conditions per place. [2024-06-28 01:37:41,710 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 85 selfloop transitions, 19 changer transitions 0/113 dead transitions. [2024-06-28 01:37:41,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 113 transitions, 744 flow [2024-06-28 01:37:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:37:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:37:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2024-06-28 01:37:41,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:37:41,713 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 386 flow. Second operand 6 states and 150 transitions. [2024-06-28 01:37:41,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 113 transitions, 744 flow [2024-06-28 01:37:41,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 113 transitions, 717 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:41,721 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 491 flow [2024-06-28 01:37:41,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=491, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2024-06-28 01:37:41,723 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 23 predicate places. [2024-06-28 01:37:41,723 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 491 flow [2024-06-28 01:37:41,723 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 01:37:41,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:41,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:41,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:37:41,724 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:41,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:41,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1406178158, now seen corresponding path program 1 times [2024-06-28 01:37:41,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:41,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109601010] [2024-06-28 01:37:41,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:41,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:42,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:42,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109601010] [2024-06-28 01:37:42,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109601010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:42,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:42,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:37:42,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870848569] [2024-06-28 01:37:42,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:42,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:37:42,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:42,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:37:42,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:37:42,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:37:42,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 491 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 01:37:42,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:42,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:37:42,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:43,667 INFO L124 PetriNetUnfolderBase]: 4502/7242 cut-off events. [2024-06-28 01:37:43,667 INFO L125 PetriNetUnfolderBase]: For 16804/16810 co-relation queries the response was YES. [2024-06-28 01:37:43,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22344 conditions, 7242 events. 4502/7242 cut-off events. For 16804/16810 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 44865 event pairs, 1729 based on Foata normal form. 6/7061 useless extension candidates. Maximal degree in co-relation 22315. Up to 6368 conditions per place. [2024-06-28 01:37:43,741 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 95 selfloop transitions, 18 changer transitions 0/122 dead transitions. [2024-06-28 01:37:43,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 122 transitions, 886 flow [2024-06-28 01:37:43,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:37:43,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:37:43,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:37:43,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 01:37:43,743 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 491 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:37:43,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 122 transitions, 886 flow [2024-06-28 01:37:43,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 122 transitions, 870 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 01:37:43,760 INFO L231 Difference]: Finished difference. Result has 83 places, 92 transitions, 612 flow [2024-06-28 01:37:43,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=612, PETRI_PLACES=83, PETRI_TRANSITIONS=92} [2024-06-28 01:37:43,763 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2024-06-28 01:37:43,763 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 92 transitions, 612 flow [2024-06-28 01:37:43,764 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 01:37:43,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:43,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:43,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:37:43,764 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:43,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:43,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1851681968, now seen corresponding path program 2 times [2024-06-28 01:37:43,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:43,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973944679] [2024-06-28 01:37:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:43,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:44,572 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 01:37:44,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:44,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973944679] [2024-06-28 01:37:44,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973944679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:44,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:44,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:37:44,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204917878] [2024-06-28 01:37:44,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:44,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:37:44,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:44,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:37:44,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:37:44,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:37:44,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 92 transitions, 612 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 01:37:44,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:44,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:37:44,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:45,458 INFO L124 PetriNetUnfolderBase]: 4497/7355 cut-off events. [2024-06-28 01:37:45,459 INFO L125 PetriNetUnfolderBase]: For 21262/21262 co-relation queries the response was YES. [2024-06-28 01:37:45,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23777 conditions, 7355 events. 4497/7355 cut-off events. For 21262/21262 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 46803 event pairs, 1937 based on Foata normal form. 2/7170 useless extension candidates. Maximal degree in co-relation 23744. Up to 6401 conditions per place. [2024-06-28 01:37:45,514 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 93 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2024-06-28 01:37:45,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 115 transitions, 882 flow [2024-06-28 01:37:45,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:37:45,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:37:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 01:37:45,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-28 01:37:45,519 INFO L175 Difference]: Start difference. First operand has 83 places, 92 transitions, 612 flow. Second operand 6 states and 140 transitions. [2024-06-28 01:37:45,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 115 transitions, 882 flow [2024-06-28 01:37:45,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 115 transitions, 850 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-28 01:37:45,543 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 614 flow [2024-06-28 01:37:45,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=614, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2024-06-28 01:37:45,545 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2024-06-28 01:37:45,545 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 614 flow [2024-06-28 01:37:45,545 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 01:37:45,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:45,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:45,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:37:45,546 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:45,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:45,546 INFO L85 PathProgramCache]: Analyzing trace with hash -55287205, now seen corresponding path program 1 times [2024-06-28 01:37:45,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:45,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256221678] [2024-06-28 01:37:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:45,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:46,509 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 01:37:46,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:46,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256221678] [2024-06-28 01:37:46,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256221678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:46,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:46,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:46,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512931739] [2024-06-28 01:37:46,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:46,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:46,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:46,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:46,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:46,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:37:46,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 614 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:46,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:46,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:37:46,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:47,531 INFO L124 PetriNetUnfolderBase]: 4520/7265 cut-off events. [2024-06-28 01:37:47,531 INFO L125 PetriNetUnfolderBase]: For 23159/23159 co-relation queries the response was YES. [2024-06-28 01:37:47,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24065 conditions, 7265 events. 4520/7265 cut-off events. For 23159/23159 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 44957 event pairs, 1676 based on Foata normal form. 2/7081 useless extension candidates. Maximal degree in co-relation 24029. Up to 6400 conditions per place. [2024-06-28 01:37:47,591 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 110 selfloop transitions, 15 changer transitions 0/134 dead transitions. [2024-06-28 01:37:47,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 134 transitions, 998 flow [2024-06-28 01:37:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:47,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:37:47,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-28 01:37:47,594 INFO L175 Difference]: Start difference. First operand has 88 places, 92 transitions, 614 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:37:47,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 134 transitions, 998 flow [2024-06-28 01:37:47,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 134 transitions, 957 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:47,627 INFO L231 Difference]: Finished difference. Result has 90 places, 95 transitions, 647 flow [2024-06-28 01:37:47,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=647, PETRI_PLACES=90, PETRI_TRANSITIONS=95} [2024-06-28 01:37:47,629 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-28 01:37:47,629 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 95 transitions, 647 flow [2024-06-28 01:37:47,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:47,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:47,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:47,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:37:47,630 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:47,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:47,630 INFO L85 PathProgramCache]: Analyzing trace with hash 641851223, now seen corresponding path program 2 times [2024-06-28 01:37:47,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:47,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959271649] [2024-06-28 01:37:47,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:47,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:48,529 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 01:37:48,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:48,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959271649] [2024-06-28 01:37:48,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959271649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:48,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:48,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:48,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506172349] [2024-06-28 01:37:48,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:48,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:48,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:48,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:48,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:48,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:37:48,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 647 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:48,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:48,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:37:48,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:49,388 INFO L124 PetriNetUnfolderBase]: 4548/7308 cut-off events. [2024-06-28 01:37:49,388 INFO L125 PetriNetUnfolderBase]: For 28508/28517 co-relation queries the response was YES. [2024-06-28 01:37:49,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25380 conditions, 7308 events. 4548/7308 cut-off events. For 28508/28517 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 45208 event pairs, 1684 based on Foata normal form. 8/7129 useless extension candidates. Maximal degree in co-relation 25344. Up to 6358 conditions per place. [2024-06-28 01:37:49,433 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 102 selfloop transitions, 28 changer transitions 0/139 dead transitions. [2024-06-28 01:37:49,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 139 transitions, 1115 flow [2024-06-28 01:37:49,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:49,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:37:49,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-28 01:37:49,438 INFO L175 Difference]: Start difference. First operand has 90 places, 95 transitions, 647 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:37:49,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 139 transitions, 1115 flow [2024-06-28 01:37:49,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 139 transitions, 1065 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:49,465 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 739 flow [2024-06-28 01:37:49,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=739, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2024-06-28 01:37:49,466 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-28 01:37:49,466 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 739 flow [2024-06-28 01:37:49,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:49,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:49,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:49,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:37:49,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:49,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:49,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1694971477, now seen corresponding path program 1 times [2024-06-28 01:37:49,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:49,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625251690] [2024-06-28 01:37:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:49,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:50,419 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 01:37:50,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:50,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625251690] [2024-06-28 01:37:50,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625251690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:50,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:50,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:50,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295239934] [2024-06-28 01:37:50,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:50,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:50,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:50,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:50,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:50,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:37:50,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 739 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:50,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:50,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:37:50,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:51,373 INFO L124 PetriNetUnfolderBase]: 4760/7641 cut-off events. [2024-06-28 01:37:51,373 INFO L125 PetriNetUnfolderBase]: For 36259/36268 co-relation queries the response was YES. [2024-06-28 01:37:51,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27649 conditions, 7641 events. 4760/7641 cut-off events. For 36259/36268 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 47542 event pairs, 1555 based on Foata normal form. 8/7453 useless extension candidates. Maximal degree in co-relation 27612. Up to 6436 conditions per place. [2024-06-28 01:37:51,423 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 129 selfloop transitions, 31 changer transitions 0/169 dead transitions. [2024-06-28 01:37:51,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 1441 flow [2024-06-28 01:37:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:51,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:51,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:37:51,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-28 01:37:51,426 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 739 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:37:51,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 1441 flow [2024-06-28 01:37:51,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 169 transitions, 1391 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:51,473 INFO L231 Difference]: Finished difference. Result has 99 places, 121 transitions, 955 flow [2024-06-28 01:37:51,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=955, PETRI_PLACES=99, PETRI_TRANSITIONS=121} [2024-06-28 01:37:51,474 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-06-28 01:37:51,474 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 121 transitions, 955 flow [2024-06-28 01:37:51,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:51,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:51,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:51,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:37:51,476 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:51,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1567564689, now seen corresponding path program 2 times [2024-06-28 01:37:51,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:51,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038821534] [2024-06-28 01:37:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:51,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:52,411 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 01:37:52,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:52,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038821534] [2024-06-28 01:37:52,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038821534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:52,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:52,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:52,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894244673] [2024-06-28 01:37:52,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:52,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:52,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:52,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:52,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:52,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:37:52,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 121 transitions, 955 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:52,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:52,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:37:52,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:53,497 INFO L124 PetriNetUnfolderBase]: 4844/7866 cut-off events. [2024-06-28 01:37:53,497 INFO L125 PetriNetUnfolderBase]: For 47546/47546 co-relation queries the response was YES. [2024-06-28 01:37:53,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31387 conditions, 7866 events. 4844/7866 cut-off events. For 47546/47546 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 49940 event pairs, 1808 based on Foata normal form. 6/7678 useless extension candidates. Maximal degree in co-relation 31345. Up to 6661 conditions per place. [2024-06-28 01:37:53,557 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 134 selfloop transitions, 27 changer transitions 0/170 dead transitions. [2024-06-28 01:37:53,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 170 transitions, 1599 flow [2024-06-28 01:37:53,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:37:53,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-28 01:37:53,560 INFO L175 Difference]: Start difference. First operand has 99 places, 121 transitions, 955 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:37:53,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 170 transitions, 1599 flow [2024-06-28 01:37:53,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 170 transitions, 1551 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-28 01:37:53,613 INFO L231 Difference]: Finished difference. Result has 107 places, 130 transitions, 1097 flow [2024-06-28 01:37:53,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1097, PETRI_PLACES=107, PETRI_TRANSITIONS=130} [2024-06-28 01:37:53,614 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 53 predicate places. [2024-06-28 01:37:53,614 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 130 transitions, 1097 flow [2024-06-28 01:37:53,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:53,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:53,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:53,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:37:53,615 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:53,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash 847582103, now seen corresponding path program 3 times [2024-06-28 01:37:53,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:53,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614423529] [2024-06-28 01:37:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:53,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:54,474 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 01:37:54,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:54,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614423529] [2024-06-28 01:37:54,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614423529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:54,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:54,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:54,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379785912] [2024-06-28 01:37:54,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:54,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:54,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:54,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:54,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:54,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:37:54,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 130 transitions, 1097 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:54,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:54,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:37:54,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:55,573 INFO L124 PetriNetUnfolderBase]: 4839/7864 cut-off events. [2024-06-28 01:37:55,573 INFO L125 PetriNetUnfolderBase]: For 53751/53751 co-relation queries the response was YES. [2024-06-28 01:37:55,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32248 conditions, 7864 events. 4839/7864 cut-off events. For 53751/53751 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 50001 event pairs, 1834 based on Foata normal form. 2/7670 useless extension candidates. Maximal degree in co-relation 32201. Up to 6855 conditions per place. [2024-06-28 01:37:55,626 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 135 selfloop transitions, 18 changer transitions 0/162 dead transitions. [2024-06-28 01:37:55,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 162 transitions, 1510 flow [2024-06-28 01:37:55,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:55,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 01:37:55,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:37:55,628 INFO L175 Difference]: Start difference. First operand has 107 places, 130 transitions, 1097 flow. Second operand 8 states and 176 transitions. [2024-06-28 01:37:55,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 162 transitions, 1510 flow [2024-06-28 01:37:55,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 162 transitions, 1445 flow, removed 24 selfloop flow, removed 2 redundant places. [2024-06-28 01:37:55,682 INFO L231 Difference]: Finished difference. Result has 114 places, 132 transitions, 1106 flow [2024-06-28 01:37:55,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1106, PETRI_PLACES=114, PETRI_TRANSITIONS=132} [2024-06-28 01:37:55,683 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-28 01:37:55,683 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 132 transitions, 1106 flow [2024-06-28 01:37:55,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:55,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:55,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:55,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:37:55,684 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:55,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:55,685 INFO L85 PathProgramCache]: Analyzing trace with hash 946883771, now seen corresponding path program 3 times [2024-06-28 01:37:55,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:55,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799104538] [2024-06-28 01:37:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:55,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:56,439 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 01:37:56,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:56,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799104538] [2024-06-28 01:37:56,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799104538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:56,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:56,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:56,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132535159] [2024-06-28 01:37:56,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:56,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:56,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:56,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:56,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:37:56,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 132 transitions, 1106 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:56,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:56,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:37:56,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:57,585 INFO L124 PetriNetUnfolderBase]: 4867/7913 cut-off events. [2024-06-28 01:37:57,585 INFO L125 PetriNetUnfolderBase]: For 55821/55821 co-relation queries the response was YES. [2024-06-28 01:37:57,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32493 conditions, 7913 events. 4867/7913 cut-off events. For 55821/55821 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 50352 event pairs, 1827 based on Foata normal form. 6/7721 useless extension candidates. Maximal degree in co-relation 32443. Up to 6821 conditions per place. [2024-06-28 01:37:57,642 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 135 selfloop transitions, 27 changer transitions 0/171 dead transitions. [2024-06-28 01:37:57,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 171 transitions, 1640 flow [2024-06-28 01:37:57,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:57,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:57,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:37:57,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-06-28 01:37:57,644 INFO L175 Difference]: Start difference. First operand has 114 places, 132 transitions, 1106 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:37:57,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 171 transitions, 1640 flow [2024-06-28 01:37:57,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 171 transitions, 1585 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:57,693 INFO L231 Difference]: Finished difference. Result has 117 places, 140 transitions, 1222 flow [2024-06-28 01:37:57,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1222, PETRI_PLACES=117, PETRI_TRANSITIONS=140} [2024-06-28 01:37:57,694 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 63 predicate places. [2024-06-28 01:37:57,694 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 140 transitions, 1222 flow [2024-06-28 01:37:57,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:57,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:57,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:57,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:37:57,695 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:37:57,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:57,695 INFO L85 PathProgramCache]: Analyzing trace with hash 847858158, now seen corresponding path program 1 times [2024-06-28 01:37:57,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:57,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48784389] [2024-06-28 01:37:57,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:57,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:58,815 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 01:37:58,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:58,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48784389] [2024-06-28 01:37:58,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48784389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:58,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:58,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:58,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124373667] [2024-06-28 01:37:58,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:58,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:58,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:58,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:58,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:37:58,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 140 transitions, 1222 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:58,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:58,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:37:58,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:00,109 INFO L124 PetriNetUnfolderBase]: 4890/7961 cut-off events. [2024-06-28 01:38:00,110 INFO L125 PetriNetUnfolderBase]: For 61243/61243 co-relation queries the response was YES. [2024-06-28 01:38:00,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33270 conditions, 7961 events. 4890/7961 cut-off events. For 61243/61243 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 50868 event pairs, 1757 based on Foata normal form. 6/7763 useless extension candidates. Maximal degree in co-relation 33217. Up to 6774 conditions per place. [2024-06-28 01:38:00,164 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 138 selfloop transitions, 34 changer transitions 0/181 dead transitions. [2024-06-28 01:38:00,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 181 transitions, 1770 flow [2024-06-28 01:38:00,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:38:00,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:38:00,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:38:00,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-28 01:38:00,165 INFO L175 Difference]: Start difference. First operand has 117 places, 140 transitions, 1222 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:38:00,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 181 transitions, 1770 flow [2024-06-28 01:38:00,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 181 transitions, 1701 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:00,214 INFO L231 Difference]: Finished difference. Result has 120 places, 143 transitions, 1275 flow [2024-06-28 01:38:00,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1275, PETRI_PLACES=120, PETRI_TRANSITIONS=143} [2024-06-28 01:38:00,214 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-28 01:38:00,215 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 143 transitions, 1275 flow [2024-06-28 01:38:00,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:00,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:00,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:00,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:38:00,215 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:00,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:00,215 INFO L85 PathProgramCache]: Analyzing trace with hash -108787098, now seen corresponding path program 1 times [2024-06-28 01:38:00,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:00,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593855095] [2024-06-28 01:38:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:00,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:00,887 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 01:38:00,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:00,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593855095] [2024-06-28 01:38:00,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593855095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:00,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:00,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:38:00,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965822467] [2024-06-28 01:38:00,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:00,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:38:00,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:00,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:38:00,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:38:00,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:38:00,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 143 transitions, 1275 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:00,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:00,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:38:00,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:01,963 INFO L124 PetriNetUnfolderBase]: 4575/7621 cut-off events. [2024-06-28 01:38:01,964 INFO L125 PetriNetUnfolderBase]: For 64358/64358 co-relation queries the response was YES. [2024-06-28 01:38:01,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32279 conditions, 7621 events. 4575/7621 cut-off events. For 64358/64358 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 50082 event pairs, 1817 based on Foata normal form. 1/7424 useless extension candidates. Maximal degree in co-relation 32225. Up to 6474 conditions per place. [2024-06-28 01:38:02,013 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 121 selfloop transitions, 15 changer transitions 0/156 dead transitions. [2024-06-28 01:38:02,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 156 transitions, 1577 flow [2024-06-28 01:38:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:38:02,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:38:02,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 01:38:02,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-28 01:38:02,014 INFO L175 Difference]: Start difference. First operand has 120 places, 143 transitions, 1275 flow. Second operand 5 states and 119 transitions. [2024-06-28 01:38:02,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 156 transitions, 1577 flow [2024-06-28 01:38:02,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 156 transitions, 1467 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:02,059 INFO L231 Difference]: Finished difference. Result has 120 places, 143 transitions, 1205 flow [2024-06-28 01:38:02,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1205, PETRI_PLACES=120, PETRI_TRANSITIONS=143} [2024-06-28 01:38:02,060 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2024-06-28 01:38:02,060 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 143 transitions, 1205 flow [2024-06-28 01:38:02,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:02,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:02,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:02,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:38:02,060 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:02,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:02,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1581256531, now seen corresponding path program 1 times [2024-06-28 01:38:02,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:02,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253672776] [2024-06-28 01:38:02,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:02,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:03,266 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 01:38:03,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:03,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253672776] [2024-06-28 01:38:03,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253672776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:03,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:03,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:03,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273821365] [2024-06-28 01:38:03,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:03,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:03,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:03,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:03,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:03,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:03,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 143 transitions, 1205 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:03,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:03,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:03,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:04,626 INFO L124 PetriNetUnfolderBase]: 4943/7520 cut-off events. [2024-06-28 01:38:04,626 INFO L125 PetriNetUnfolderBase]: For 68426/68426 co-relation queries the response was YES. [2024-06-28 01:38:04,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33911 conditions, 7520 events. 4943/7520 cut-off events. For 68426/68426 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 43502 event pairs, 1356 based on Foata normal form. 2/7463 useless extension candidates. Maximal degree in co-relation 33856. Up to 6907 conditions per place. [2024-06-28 01:38:04,676 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 163 selfloop transitions, 40 changer transitions 0/212 dead transitions. [2024-06-28 01:38:04,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 212 transitions, 1999 flow [2024-06-28 01:38:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:04,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:04,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-06-28 01:38:04,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49583333333333335 [2024-06-28 01:38:04,678 INFO L175 Difference]: Start difference. First operand has 120 places, 143 transitions, 1205 flow. Second operand 10 states and 238 transitions. [2024-06-28 01:38:04,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 212 transitions, 1999 flow [2024-06-28 01:38:04,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 212 transitions, 1953 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:04,737 INFO L231 Difference]: Finished difference. Result has 127 places, 152 transitions, 1414 flow [2024-06-28 01:38:04,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1414, PETRI_PLACES=127, PETRI_TRANSITIONS=152} [2024-06-28 01:38:04,738 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 73 predicate places. [2024-06-28 01:38:04,738 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 152 transitions, 1414 flow [2024-06-28 01:38:04,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:04,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:04,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:04,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:38:04,739 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:04,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:04,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1581166321, now seen corresponding path program 2 times [2024-06-28 01:38:04,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:04,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780240708] [2024-06-28 01:38:04,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:04,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:06,102 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 01:38:06,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:06,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780240708] [2024-06-28 01:38:06,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780240708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:06,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:06,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:06,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957599931] [2024-06-28 01:38:06,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:06,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:06,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:06,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:06,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:06,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:06,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 152 transitions, 1414 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:06,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:06,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:06,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:07,556 INFO L124 PetriNetUnfolderBase]: 4943/7946 cut-off events. [2024-06-28 01:38:07,556 INFO L125 PetriNetUnfolderBase]: For 78584/78584 co-relation queries the response was YES. [2024-06-28 01:38:07,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35837 conditions, 7946 events. 4943/7946 cut-off events. For 78584/78584 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 49773 event pairs, 1568 based on Foata normal form. 2/7737 useless extension candidates. Maximal degree in co-relation 35781. Up to 6967 conditions per place. [2024-06-28 01:38:07,628 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 173 selfloop transitions, 19 changer transitions 0/201 dead transitions. [2024-06-28 01:38:07,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 201 transitions, 1988 flow [2024-06-28 01:38:07,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:07,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:07,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:38:07,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-28 01:38:07,630 INFO L175 Difference]: Start difference. First operand has 127 places, 152 transitions, 1414 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:38:07,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 201 transitions, 1988 flow [2024-06-28 01:38:07,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 201 transitions, 1795 flow, removed 80 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:07,736 INFO L231 Difference]: Finished difference. Result has 130 places, 155 transitions, 1327 flow [2024-06-28 01:38:07,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1327, PETRI_PLACES=130, PETRI_TRANSITIONS=155} [2024-06-28 01:38:07,736 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2024-06-28 01:38:07,737 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 155 transitions, 1327 flow [2024-06-28 01:38:07,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:07,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:07,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:07,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:38:07,737 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:07,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:07,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1581166166, now seen corresponding path program 1 times [2024-06-28 01:38:07,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:07,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540612561] [2024-06-28 01:38:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:07,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:08,878 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 01:38:08,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:08,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540612561] [2024-06-28 01:38:08,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540612561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:08,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:08,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:08,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584038202] [2024-06-28 01:38:08,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:08,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:08,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:08,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:08,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:09,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:09,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 155 transitions, 1327 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:09,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:09,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:09,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:10,245 INFO L124 PetriNetUnfolderBase]: 5092/8134 cut-off events. [2024-06-28 01:38:10,246 INFO L125 PetriNetUnfolderBase]: For 84626/84626 co-relation queries the response was YES. [2024-06-28 01:38:10,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37026 conditions, 8134 events. 5092/8134 cut-off events. For 84626/84626 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 50798 event pairs, 1547 based on Foata normal form. 6/7923 useless extension candidates. Maximal degree in co-relation 36969. Up to 7038 conditions per place. [2024-06-28 01:38:10,298 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 178 selfloop transitions, 30 changer transitions 0/217 dead transitions. [2024-06-28 01:38:10,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 217 transitions, 2135 flow [2024-06-28 01:38:10,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:10,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 204 transitions. [2024-06-28 01:38:10,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 01:38:10,300 INFO L175 Difference]: Start difference. First operand has 130 places, 155 transitions, 1327 flow. Second operand 8 states and 204 transitions. [2024-06-28 01:38:10,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 217 transitions, 2135 flow [2024-06-28 01:38:10,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 217 transitions, 2097 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:10,348 INFO L231 Difference]: Finished difference. Result has 134 places, 166 transitions, 1521 flow [2024-06-28 01:38:10,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1521, PETRI_PLACES=134, PETRI_TRANSITIONS=166} [2024-06-28 01:38:10,348 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 80 predicate places. [2024-06-28 01:38:10,348 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 166 transitions, 1521 flow [2024-06-28 01:38:10,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:10,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:10,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:10,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:38:10,349 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:10,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:10,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1577441516, now seen corresponding path program 2 times [2024-06-28 01:38:10,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:10,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906072821] [2024-06-28 01:38:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:10,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:11,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:11,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906072821] [2024-06-28 01:38:11,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906072821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:11,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:11,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:11,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580678437] [2024-06-28 01:38:11,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:11,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:11,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:11,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:11,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:11,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:11,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 166 transitions, 1521 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:11,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:11,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:11,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:12,610 INFO L124 PetriNetUnfolderBase]: 5395/8528 cut-off events. [2024-06-28 01:38:12,610 INFO L125 PetriNetUnfolderBase]: For 106705/106717 co-relation queries the response was YES. [2024-06-28 01:38:12,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41925 conditions, 8528 events. 5395/8528 cut-off events. For 106705/106717 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 52785 event pairs, 1507 based on Foata normal form. 9/8330 useless extension candidates. Maximal degree in co-relation 41865. Up to 6654 conditions per place. [2024-06-28 01:38:12,687 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 159 selfloop transitions, 68 changer transitions 0/236 dead transitions. [2024-06-28 01:38:12,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 236 transitions, 2617 flow [2024-06-28 01:38:12,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-28 01:38:12,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-28 01:38:12,688 INFO L175 Difference]: Start difference. First operand has 134 places, 166 transitions, 1521 flow. Second operand 8 states and 213 transitions. [2024-06-28 01:38:12,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 236 transitions, 2617 flow [2024-06-28 01:38:12,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 236 transitions, 2481 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:12,787 INFO L231 Difference]: Finished difference. Result has 140 places, 181 transitions, 1796 flow [2024-06-28 01:38:12,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1385, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1796, PETRI_PLACES=140, PETRI_TRANSITIONS=181} [2024-06-28 01:38:12,788 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2024-06-28 01:38:12,788 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 181 transitions, 1796 flow [2024-06-28 01:38:12,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:12,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:12,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:12,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:38:12,789 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:12,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:12,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1577447096, now seen corresponding path program 3 times [2024-06-28 01:38:12,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:12,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129303500] [2024-06-28 01:38:12,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:12,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:13,726 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 01:38:13,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:13,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129303500] [2024-06-28 01:38:13,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129303500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:13,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:13,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:13,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099857338] [2024-06-28 01:38:13,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:13,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:13,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:13,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:13,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:13,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:13,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 181 transitions, 1796 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:13,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:13,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:13,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:14,958 INFO L124 PetriNetUnfolderBase]: 5383/8512 cut-off events. [2024-06-28 01:38:14,958 INFO L125 PetriNetUnfolderBase]: For 121213/121225 co-relation queries the response was YES. [2024-06-28 01:38:15,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43855 conditions, 8512 events. 5383/8512 cut-off events. For 121213/121225 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 52691 event pairs, 1519 based on Foata normal form. 9/8314 useless extension candidates. Maximal degree in co-relation 43792. Up to 6648 conditions per place. [2024-06-28 01:38:15,046 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 163 selfloop transitions, 63 changer transitions 0/235 dead transitions. [2024-06-28 01:38:15,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 235 transitions, 2656 flow [2024-06-28 01:38:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-28 01:38:15,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520833333333334 [2024-06-28 01:38:15,047 INFO L175 Difference]: Start difference. First operand has 140 places, 181 transitions, 1796 flow. Second operand 8 states and 212 transitions. [2024-06-28 01:38:15,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 235 transitions, 2656 flow [2024-06-28 01:38:15,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 235 transitions, 2509 flow, removed 64 selfloop flow, removed 2 redundant places. [2024-06-28 01:38:15,209 INFO L231 Difference]: Finished difference. Result has 146 places, 181 transitions, 1789 flow [2024-06-28 01:38:15,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1789, PETRI_PLACES=146, PETRI_TRANSITIONS=181} [2024-06-28 01:38:15,210 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2024-06-28 01:38:15,210 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 181 transitions, 1789 flow [2024-06-28 01:38:15,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:15,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:15,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:15,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:38:15,211 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:15,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:15,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1710182969, now seen corresponding path program 3 times [2024-06-28 01:38:15,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:15,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979872519] [2024-06-28 01:38:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:15,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:16,318 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 01:38:16,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:16,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979872519] [2024-06-28 01:38:16,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979872519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:16,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:16,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:16,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136625822] [2024-06-28 01:38:16,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:16,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:16,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:16,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:16,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:16,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:16,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 181 transitions, 1789 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:16,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:16,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:16,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:17,675 INFO L124 PetriNetUnfolderBase]: 5416/8166 cut-off events. [2024-06-28 01:38:17,675 INFO L125 PetriNetUnfolderBase]: For 115720/115732 co-relation queries the response was YES. [2024-06-28 01:38:17,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42691 conditions, 8166 events. 5416/8166 cut-off events. For 115720/115732 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 47268 event pairs, 1396 based on Foata normal form. 10/8107 useless extension candidates. Maximal degree in co-relation 42626. Up to 7509 conditions per place. [2024-06-28 01:38:17,753 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 175 selfloop transitions, 54 changer transitions 0/238 dead transitions. [2024-06-28 01:38:17,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 238 transitions, 2641 flow [2024-06-28 01:38:17,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:17,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:17,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 01:38:17,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-28 01:38:17,755 INFO L175 Difference]: Start difference. First operand has 146 places, 181 transitions, 1789 flow. Second operand 9 states and 211 transitions. [2024-06-28 01:38:17,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 238 transitions, 2641 flow [2024-06-28 01:38:17,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 238 transitions, 2464 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:17,863 INFO L231 Difference]: Finished difference. Result has 148 places, 193 transitions, 2013 flow [2024-06-28 01:38:17,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1612, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2013, PETRI_PLACES=148, PETRI_TRANSITIONS=193} [2024-06-28 01:38:17,863 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-06-28 01:38:17,863 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 193 transitions, 2013 flow [2024-06-28 01:38:17,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:17,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:17,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:17,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:38:17,864 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:17,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1341610781, now seen corresponding path program 1 times [2024-06-28 01:38:17,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:17,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619412012] [2024-06-28 01:38:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:18,930 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 01:38:18,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:18,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619412012] [2024-06-28 01:38:18,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619412012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:18,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:18,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:18,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052949862] [2024-06-28 01:38:18,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:18,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:18,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:18,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:18,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:19,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:19,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 193 transitions, 2013 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:19,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:19,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:19,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:20,227 INFO L124 PetriNetUnfolderBase]: 5445/8524 cut-off events. [2024-06-28 01:38:20,227 INFO L125 PetriNetUnfolderBase]: For 129208/129208 co-relation queries the response was YES. [2024-06-28 01:38:20,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43992 conditions, 8524 events. 5445/8524 cut-off events. For 129208/129208 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 52754 event pairs, 1797 based on Foata normal form. 3/8383 useless extension candidates. Maximal degree in co-relation 43927. Up to 7505 conditions per place. [2024-06-28 01:38:20,307 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 186 selfloop transitions, 39 changer transitions 0/234 dead transitions. [2024-06-28 01:38:20,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 234 transitions, 2681 flow [2024-06-28 01:38:20,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:38:20,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:38:20,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:38:20,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-06-28 01:38:20,309 INFO L175 Difference]: Start difference. First operand has 148 places, 193 transitions, 2013 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:38:20,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 234 transitions, 2681 flow [2024-06-28 01:38:20,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 234 transitions, 2488 flow, removed 91 selfloop flow, removed 2 redundant places. [2024-06-28 01:38:20,455 INFO L231 Difference]: Finished difference. Result has 153 places, 197 transitions, 1986 flow [2024-06-28 01:38:20,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1986, PETRI_PLACES=153, PETRI_TRANSITIONS=197} [2024-06-28 01:38:20,456 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 99 predicate places. [2024-06-28 01:38:20,456 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 197 transitions, 1986 flow [2024-06-28 01:38:20,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:20,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:20,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:20,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:38:20,457 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:20,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:20,457 INFO L85 PathProgramCache]: Analyzing trace with hash 505242888, now seen corresponding path program 4 times [2024-06-28 01:38:20,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:20,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398457796] [2024-06-28 01:38:20,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:20,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:21,533 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 01:38:21,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:21,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398457796] [2024-06-28 01:38:21,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398457796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:21,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:21,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:21,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961328946] [2024-06-28 01:38:21,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:21,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:21,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:21,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:21,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:21,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:21,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 197 transitions, 1986 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:21,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:21,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:21,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:22,874 INFO L124 PetriNetUnfolderBase]: 5529/8625 cut-off events. [2024-06-28 01:38:22,875 INFO L125 PetriNetUnfolderBase]: For 140228/140228 co-relation queries the response was YES. [2024-06-28 01:38:22,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46040 conditions, 8625 events. 5529/8625 cut-off events. For 140228/140228 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 53126 event pairs, 1809 based on Foata normal form. 6/8492 useless extension candidates. Maximal degree in co-relation 45973. Up to 7350 conditions per place. [2024-06-28 01:38:22,949 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 198 selfloop transitions, 41 changer transitions 0/248 dead transitions. [2024-06-28 01:38:22,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 248 transitions, 2904 flow [2024-06-28 01:38:22,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:22,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:22,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-28 01:38:22,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2024-06-28 01:38:22,951 INFO L175 Difference]: Start difference. First operand has 153 places, 197 transitions, 1986 flow. Second operand 9 states and 214 transitions. [2024-06-28 01:38:22,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 248 transitions, 2904 flow [2024-06-28 01:38:23,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 248 transitions, 2782 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:23,104 INFO L231 Difference]: Finished difference. Result has 158 places, 202 transitions, 2069 flow [2024-06-28 01:38:23,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2069, PETRI_PLACES=158, PETRI_TRANSITIONS=202} [2024-06-28 01:38:23,104 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2024-06-28 01:38:23,104 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 202 transitions, 2069 flow [2024-06-28 01:38:23,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:23,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:23,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:23,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:38:23,105 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:23,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:23,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1231511205, now seen corresponding path program 4 times [2024-06-28 01:38:23,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:23,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761757119] [2024-06-28 01:38:23,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:23,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:24,137 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 01:38:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761757119] [2024-06-28 01:38:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761757119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:24,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:24,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:24,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715481210] [2024-06-28 01:38:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:24,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:24,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:24,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:24,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:24,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 202 transitions, 2069 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:24,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:24,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:24,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:25,545 INFO L124 PetriNetUnfolderBase]: 5524/8613 cut-off events. [2024-06-28 01:38:25,545 INFO L125 PetriNetUnfolderBase]: For 149065/149065 co-relation queries the response was YES. [2024-06-28 01:38:25,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46467 conditions, 8613 events. 5524/8613 cut-off events. For 149065/149065 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 53053 event pairs, 1821 based on Foata normal form. 2/8478 useless extension candidates. Maximal degree in co-relation 46398. Up to 7768 conditions per place. [2024-06-28 01:38:25,625 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 209 selfloop transitions, 30 changer transitions 0/248 dead transitions. [2024-06-28 01:38:25,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 248 transitions, 2761 flow [2024-06-28 01:38:25,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:38:25,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-28 01:38:25,627 INFO L175 Difference]: Start difference. First operand has 158 places, 202 transitions, 2069 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:38:25,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 248 transitions, 2761 flow [2024-06-28 01:38:25,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 248 transitions, 2573 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:25,783 INFO L231 Difference]: Finished difference. Result has 159 places, 208 transitions, 2076 flow [2024-06-28 01:38:25,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2076, PETRI_PLACES=159, PETRI_TRANSITIONS=208} [2024-06-28 01:38:25,784 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 105 predicate places. [2024-06-28 01:38:25,784 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 208 transitions, 2076 flow [2024-06-28 01:38:25,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:25,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:25,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:25,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:38:25,785 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:25,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:25,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1231516940, now seen corresponding path program 5 times [2024-06-28 01:38:25,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:25,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841688236] [2024-06-28 01:38:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:25,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:26,609 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 01:38:26,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:26,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841688236] [2024-06-28 01:38:26,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841688236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:26,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:26,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:26,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601452069] [2024-06-28 01:38:26,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:26,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:26,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:26,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:26,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 208 transitions, 2076 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:26,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:26,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:26,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:27,963 INFO L124 PetriNetUnfolderBase]: 5608/8736 cut-off events. [2024-06-28 01:38:27,964 INFO L125 PetriNetUnfolderBase]: For 161223/161223 co-relation queries the response was YES. [2024-06-28 01:38:28,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47436 conditions, 8736 events. 5608/8736 cut-off events. For 161223/161223 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 53821 event pairs, 1814 based on Foata normal form. 6/8603 useless extension candidates. Maximal degree in co-relation 47367. Up to 7405 conditions per place. [2024-06-28 01:38:28,032 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 204 selfloop transitions, 44 changer transitions 0/257 dead transitions. [2024-06-28 01:38:28,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 257 transitions, 2949 flow [2024-06-28 01:38:28,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:38:28,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-28 01:38:28,034 INFO L175 Difference]: Start difference. First operand has 159 places, 208 transitions, 2076 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:38:28,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 257 transitions, 2949 flow [2024-06-28 01:38:28,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 257 transitions, 2787 flow, removed 49 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:28,188 INFO L231 Difference]: Finished difference. Result has 162 places, 212 transitions, 2080 flow [2024-06-28 01:38:28,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2080, PETRI_PLACES=162, PETRI_TRANSITIONS=212} [2024-06-28 01:38:28,189 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 108 predicate places. [2024-06-28 01:38:28,189 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 212 transitions, 2080 flow [2024-06-28 01:38:28,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:28,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:28,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:28,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:38:28,190 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:28,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:28,190 INFO L85 PathProgramCache]: Analyzing trace with hash 513493848, now seen corresponding path program 6 times [2024-06-28 01:38:28,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:28,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563740957] [2024-06-28 01:38:28,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:28,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:29,035 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 01:38:29,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:29,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563740957] [2024-06-28 01:38:29,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563740957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:29,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:29,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:29,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29692586] [2024-06-28 01:38:29,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:29,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:29,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:29,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:29,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:29,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:29,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 212 transitions, 2080 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:29,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:29,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:29,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:30,575 INFO L124 PetriNetUnfolderBase]: 5636/8782 cut-off events. [2024-06-28 01:38:30,576 INFO L125 PetriNetUnfolderBase]: For 169094/169094 co-relation queries the response was YES. [2024-06-28 01:38:30,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48120 conditions, 8782 events. 5636/8782 cut-off events. For 169094/169094 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 54162 event pairs, 1855 based on Foata normal form. 6/8647 useless extension candidates. Maximal degree in co-relation 48050. Up to 7809 conditions per place. [2024-06-28 01:38:30,659 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 214 selfloop transitions, 32 changer transitions 0/255 dead transitions. [2024-06-28 01:38:30,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 255 transitions, 2801 flow [2024-06-28 01:38:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:30,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:30,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-28 01:38:30,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:38:30,661 INFO L175 Difference]: Start difference. First operand has 162 places, 212 transitions, 2080 flow. Second operand 9 states and 207 transitions. [2024-06-28 01:38:30,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 255 transitions, 2801 flow [2024-06-28 01:38:30,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 255 transitions, 2683 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:30,840 INFO L231 Difference]: Finished difference. Result has 166 places, 216 transitions, 2118 flow [2024-06-28 01:38:30,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1965, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2118, PETRI_PLACES=166, PETRI_TRANSITIONS=216} [2024-06-28 01:38:30,840 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 112 predicate places. [2024-06-28 01:38:30,841 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 216 transitions, 2118 flow [2024-06-28 01:38:30,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:30,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:30,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:30,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:38:30,841 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:30,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash 922568345, now seen corresponding path program 1 times [2024-06-28 01:38:30,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:30,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165073135] [2024-06-28 01:38:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:30,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:31,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:31,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165073135] [2024-06-28 01:38:31,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165073135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:31,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:31,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:38:31,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58949462] [2024-06-28 01:38:31,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:31,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:38:31,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:31,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:38:31,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:38:31,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:31,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 216 transitions, 2118 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:31,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:31,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:31,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:32,937 INFO L124 PetriNetUnfolderBase]: 5849/8970 cut-off events. [2024-06-28 01:38:32,937 INFO L125 PetriNetUnfolderBase]: For 192605/192689 co-relation queries the response was YES. [2024-06-28 01:38:32,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49415 conditions, 8970 events. 5849/8970 cut-off events. For 192605/192689 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 54612 event pairs, 2043 based on Foata normal form. 41/8800 useless extension candidates. Maximal degree in co-relation 49344. Up to 8184 conditions per place. [2024-06-28 01:38:33,019 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 197 selfloop transitions, 18 changer transitions 0/237 dead transitions. [2024-06-28 01:38:33,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 237 transitions, 2620 flow [2024-06-28 01:38:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:38:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:38:33,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:38:33,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 01:38:33,020 INFO L175 Difference]: Start difference. First operand has 166 places, 216 transitions, 2118 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:38:33,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 237 transitions, 2620 flow [2024-06-28 01:38:33,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 237 transitions, 2509 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:33,178 INFO L231 Difference]: Finished difference. Result has 165 places, 219 transitions, 2084 flow [2024-06-28 01:38:33,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2084, PETRI_PLACES=165, PETRI_TRANSITIONS=219} [2024-06-28 01:38:33,179 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 111 predicate places. [2024-06-28 01:38:33,179 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 219 transitions, 2084 flow [2024-06-28 01:38:33,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:33,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:33,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:33,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:38:33,180 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:33,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:33,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1774371308, now seen corresponding path program 1 times [2024-06-28 01:38:33,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:33,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569470350] [2024-06-28 01:38:33,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:33,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:34,602 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 01:38:34,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:34,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569470350] [2024-06-28 01:38:34,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569470350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:34,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:34,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:34,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018731734] [2024-06-28 01:38:34,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:34,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:34,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:34,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:34,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:34,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 219 transitions, 2084 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:34,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:34,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:34,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:36,157 INFO L124 PetriNetUnfolderBase]: 5883/9100 cut-off events. [2024-06-28 01:38:36,157 INFO L125 PetriNetUnfolderBase]: For 207813/207813 co-relation queries the response was YES. [2024-06-28 01:38:36,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52038 conditions, 9100 events. 5883/9100 cut-off events. For 207813/207813 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 56073 event pairs, 1278 based on Foata normal form. 4/8928 useless extension candidates. Maximal degree in co-relation 51966. Up to 8052 conditions per place. [2024-06-28 01:38:36,247 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 255 selfloop transitions, 30 changer transitions 0/295 dead transitions. [2024-06-28 01:38:36,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 295 transitions, 3111 flow [2024-06-28 01:38:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:36,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-28 01:38:36,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:38:36,248 INFO L175 Difference]: Start difference. First operand has 165 places, 219 transitions, 2084 flow. Second operand 10 states and 246 transitions. [2024-06-28 01:38:36,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 295 transitions, 3111 flow [2024-06-28 01:38:36,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 295 transitions, 3054 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:36,451 INFO L231 Difference]: Finished difference. Result has 172 places, 226 transitions, 2273 flow [2024-06-28 01:38:36,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2273, PETRI_PLACES=172, PETRI_TRANSITIONS=226} [2024-06-28 01:38:36,452 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 118 predicate places. [2024-06-28 01:38:36,452 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 226 transitions, 2273 flow [2024-06-28 01:38:36,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:36,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:36,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:36,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:38:36,453 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:36,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:36,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1774310858, now seen corresponding path program 2 times [2024-06-28 01:38:36,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:36,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569518029] [2024-06-28 01:38:36,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:36,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:37,690 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 01:38:37,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:37,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569518029] [2024-06-28 01:38:37,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569518029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:37,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:37,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:37,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339479545] [2024-06-28 01:38:37,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:37,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:37,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:37,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:37,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:37,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:37,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 226 transitions, 2273 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:37,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:37,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:37,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:39,321 INFO L124 PetriNetUnfolderBase]: 5872/9076 cut-off events. [2024-06-28 01:38:39,321 INFO L125 PetriNetUnfolderBase]: For 220000/220000 co-relation queries the response was YES. [2024-06-28 01:38:39,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52707 conditions, 9076 events. 5872/9076 cut-off events. For 220000/220000 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 55907 event pairs, 1590 based on Foata normal form. 4/8907 useless extension candidates. Maximal degree in co-relation 52633. Up to 8130 conditions per place. [2024-06-28 01:38:39,418 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 255 selfloop transitions, 27 changer transitions 0/292 dead transitions. [2024-06-28 01:38:39,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 292 transitions, 3021 flow [2024-06-28 01:38:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-28 01:38:39,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-28 01:38:39,420 INFO L175 Difference]: Start difference. First operand has 172 places, 226 transitions, 2273 flow. Second operand 10 states and 242 transitions. [2024-06-28 01:38:39,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 292 transitions, 3021 flow [2024-06-28 01:38:39,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 292 transitions, 2866 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:39,706 INFO L231 Difference]: Finished difference. Result has 177 places, 226 transitions, 2180 flow [2024-06-28 01:38:39,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2118, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2180, PETRI_PLACES=177, PETRI_TRANSITIONS=226} [2024-06-28 01:38:39,706 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 123 predicate places. [2024-06-28 01:38:39,706 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 226 transitions, 2180 flow [2024-06-28 01:38:39,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:39,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:39,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:39,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:38:39,707 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:39,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:39,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1774310734, now seen corresponding path program 1 times [2024-06-28 01:38:39,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:39,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483086667] [2024-06-28 01:38:39,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:39,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:40,783 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 01:38:40,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:40,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483086667] [2024-06-28 01:38:40,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483086667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:40,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:40,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:40,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239319118] [2024-06-28 01:38:40,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:40,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:40,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:40,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:40,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:40,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:40,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 226 transitions, 2180 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:40,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:40,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:40,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:42,560 INFO L124 PetriNetUnfolderBase]: 6152/9191 cut-off events. [2024-06-28 01:38:42,560 INFO L125 PetriNetUnfolderBase]: For 236053/236053 co-relation queries the response was YES. [2024-06-28 01:38:42,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54934 conditions, 9191 events. 6152/9191 cut-off events. For 236053/236053 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 53830 event pairs, 1353 based on Foata normal form. 6/9090 useless extension candidates. Maximal degree in co-relation 54858. Up to 8051 conditions per place. [2024-06-28 01:38:42,666 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 251 selfloop transitions, 66 changer transitions 0/327 dead transitions. [2024-06-28 01:38:42,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 327 transitions, 3852 flow [2024-06-28 01:38:42,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:42,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-28 01:38:42,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 01:38:42,668 INFO L175 Difference]: Start difference. First operand has 177 places, 226 transitions, 2180 flow. Second operand 10 states and 264 transitions. [2024-06-28 01:38:42,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 327 transitions, 3852 flow [2024-06-28 01:38:42,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 327 transitions, 3791 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:38:42,984 INFO L231 Difference]: Finished difference. Result has 180 places, 247 transitions, 2623 flow [2024-06-28 01:38:42,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2623, PETRI_PLACES=180, PETRI_TRANSITIONS=247} [2024-06-28 01:38:42,985 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2024-06-28 01:38:42,985 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 247 transitions, 2623 flow [2024-06-28 01:38:42,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:42,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:42,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:42,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:38:42,986 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:42,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1771514224, now seen corresponding path program 2 times [2024-06-28 01:38:42,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:42,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951356453] [2024-06-28 01:38:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:42,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:44,038 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 01:38:44,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:44,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951356453] [2024-06-28 01:38:44,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951356453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:44,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:44,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:44,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545108299] [2024-06-28 01:38:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:44,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:44,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:44,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:44,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:44,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:44,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 247 transitions, 2623 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:44,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:44,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:44,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:45,858 INFO L124 PetriNetUnfolderBase]: 6234/9311 cut-off events. [2024-06-28 01:38:45,859 INFO L125 PetriNetUnfolderBase]: For 265773/265775 co-relation queries the response was YES. [2024-06-28 01:38:45,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58664 conditions, 9311 events. 6234/9311 cut-off events. For 265773/265775 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 54611 event pairs, 1359 based on Foata normal form. 6/9210 useless extension candidates. Maximal degree in co-relation 58585. Up to 8294 conditions per place. [2024-06-28 01:38:45,963 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 254 selfloop transitions, 56 changer transitions 0/320 dead transitions. [2024-06-28 01:38:45,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 320 transitions, 3999 flow [2024-06-28 01:38:45,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:38:45,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-28 01:38:45,965 INFO L175 Difference]: Start difference. First operand has 180 places, 247 transitions, 2623 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:38:45,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 320 transitions, 3999 flow [2024-06-28 01:38:46,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 320 transitions, 3797 flow, removed 88 selfloop flow, removed 3 redundant places. [2024-06-28 01:38:46,280 INFO L231 Difference]: Finished difference. Result has 187 places, 254 transitions, 2710 flow [2024-06-28 01:38:46,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2439, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2710, PETRI_PLACES=187, PETRI_TRANSITIONS=254} [2024-06-28 01:38:46,281 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2024-06-28 01:38:46,281 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 254 transitions, 2710 flow [2024-06-28 01:38:46,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:46,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:46,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:46,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:38:46,281 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:46,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:46,282 INFO L85 PathProgramCache]: Analyzing trace with hash 104472924, now seen corresponding path program 3 times [2024-06-28 01:38:46,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:46,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979105709] [2024-06-28 01:38:46,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:46,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:47,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:47,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979105709] [2024-06-28 01:38:47,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979105709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:47,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:47,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:47,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428157899] [2024-06-28 01:38:47,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:47,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:47,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:47,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:47,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:47,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 254 transitions, 2710 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:47,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:47,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:47,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:49,158 INFO L124 PetriNetUnfolderBase]: 6272/9363 cut-off events. [2024-06-28 01:38:49,158 INFO L125 PetriNetUnfolderBase]: For 267594/267596 co-relation queries the response was YES. [2024-06-28 01:38:49,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57873 conditions, 9363 events. 6272/9363 cut-off events. For 267594/267596 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 54924 event pairs, 1359 based on Foata normal form. 6/9262 useless extension candidates. Maximal degree in co-relation 57792. Up to 8493 conditions per place. [2024-06-28 01:38:49,256 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 255 selfloop transitions, 59 changer transitions 0/324 dead transitions. [2024-06-28 01:38:49,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 324 transitions, 3914 flow [2024-06-28 01:38:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:49,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-28 01:38:49,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-28 01:38:49,258 INFO L175 Difference]: Start difference. First operand has 187 places, 254 transitions, 2710 flow. Second operand 10 states and 246 transitions. [2024-06-28 01:38:49,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 324 transitions, 3914 flow [2024-06-28 01:38:49,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 324 transitions, 3779 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:49,576 INFO L231 Difference]: Finished difference. Result has 193 places, 263 transitions, 2945 flow [2024-06-28 01:38:49,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2578, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2945, PETRI_PLACES=193, PETRI_TRANSITIONS=263} [2024-06-28 01:38:49,576 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 139 predicate places. [2024-06-28 01:38:49,576 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 263 transitions, 2945 flow [2024-06-28 01:38:49,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:49,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:49,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:49,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:38:49,577 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:49,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:49,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1476063140, now seen corresponding path program 3 times [2024-06-28 01:38:49,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:49,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017445154] [2024-06-28 01:38:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:49,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:50,634 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 01:38:50,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:50,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017445154] [2024-06-28 01:38:50,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017445154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:50,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:50,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:50,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738828055] [2024-06-28 01:38:50,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:50,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:50,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:50,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:50,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:50,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:50,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 263 transitions, 2945 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:50,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:50,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:50,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:52,320 INFO L124 PetriNetUnfolderBase]: 6302/9370 cut-off events. [2024-06-28 01:38:52,320 INFO L125 PetriNetUnfolderBase]: For 285590/285601 co-relation queries the response was YES. [2024-06-28 01:38:52,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59266 conditions, 9370 events. 6302/9370 cut-off events. For 285590/285601 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 54462 event pairs, 1352 based on Foata normal form. 10/9295 useless extension candidates. Maximal degree in co-relation 59182. Up to 8664 conditions per place. [2024-06-28 01:38:52,427 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 252 selfloop transitions, 56 changer transitions 0/318 dead transitions. [2024-06-28 01:38:52,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 318 transitions, 3793 flow [2024-06-28 01:38:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:52,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-28 01:38:52,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-06-28 01:38:52,429 INFO L175 Difference]: Start difference. First operand has 193 places, 263 transitions, 2945 flow. Second operand 9 states and 218 transitions. [2024-06-28 01:38:52,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 318 transitions, 3793 flow [2024-06-28 01:38:52,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 318 transitions, 3578 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:52,827 INFO L231 Difference]: Finished difference. Result has 196 places, 265 transitions, 2941 flow [2024-06-28 01:38:52,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2941, PETRI_PLACES=196, PETRI_TRANSITIONS=265} [2024-06-28 01:38:52,828 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 142 predicate places. [2024-06-28 01:38:52,828 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 265 transitions, 2941 flow [2024-06-28 01:38:52,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:52,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:52,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:52,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:38:52,829 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:52,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:52,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1476063016, now seen corresponding path program 4 times [2024-06-28 01:38:52,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:52,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310776434] [2024-06-28 01:38:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:52,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:53,992 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 01:38:53,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:53,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310776434] [2024-06-28 01:38:53,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310776434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:53,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:53,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:53,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985065648] [2024-06-28 01:38:53,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:53,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:53,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:53,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:53,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:54,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:54,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 265 transitions, 2941 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:54,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:54,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:54,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:55,854 INFO L124 PetriNetUnfolderBase]: 6537/9930 cut-off events. [2024-06-28 01:38:55,854 INFO L125 PetriNetUnfolderBase]: For 315620/315631 co-relation queries the response was YES. [2024-06-28 01:38:55,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62526 conditions, 9930 events. 6537/9930 cut-off events. For 315620/315631 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 60322 event pairs, 1468 based on Foata normal form. 8/9772 useless extension candidates. Maximal degree in co-relation 62441. Up to 7839 conditions per place. [2024-06-28 01:38:55,963 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 256 selfloop transitions, 82 changer transitions 0/348 dead transitions. [2024-06-28 01:38:55,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 348 transitions, 4467 flow [2024-06-28 01:38:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-28 01:38:55,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 01:38:55,965 INFO L175 Difference]: Start difference. First operand has 196 places, 265 transitions, 2941 flow. Second operand 10 states and 264 transitions. [2024-06-28 01:38:55,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 348 transitions, 4467 flow [2024-06-28 01:38:56,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 348 transitions, 4263 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:56,403 INFO L231 Difference]: Finished difference. Result has 200 places, 275 transitions, 3121 flow [2024-06-28 01:38:56,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3121, PETRI_PLACES=200, PETRI_TRANSITIONS=275} [2024-06-28 01:38:56,404 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 146 predicate places. [2024-06-28 01:38:56,404 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 275 transitions, 3121 flow [2024-06-28 01:38:56,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:56,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:56,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:56,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:38:56,405 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:56,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:56,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1656038480, now seen corresponding path program 1 times [2024-06-28 01:38:56,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:56,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738248663] [2024-06-28 01:38:56,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:56,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:57,575 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 01:38:57,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:57,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738248663] [2024-06-28 01:38:57,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738248663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:57,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:57,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:57,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219468708] [2024-06-28 01:38:57,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:57,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:57,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:57,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:57,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:57,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:38:57,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 275 transitions, 3121 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:57,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:57,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:38:57,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:59,319 INFO L124 PetriNetUnfolderBase]: 6594/10054 cut-off events. [2024-06-28 01:38:59,320 INFO L125 PetriNetUnfolderBase]: For 340040/340051 co-relation queries the response was YES. [2024-06-28 01:38:59,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65219 conditions, 10054 events. 6594/10054 cut-off events. For 340040/340051 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 61709 event pairs, 1538 based on Foata normal form. 8/9879 useless extension candidates. Maximal degree in co-relation 65132. Up to 8818 conditions per place. [2024-06-28 01:38:59,429 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 272 selfloop transitions, 46 changer transitions 0/328 dead transitions. [2024-06-28 01:38:59,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 328 transitions, 4195 flow [2024-06-28 01:38:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:38:59,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-06-28 01:38:59,430 INFO L175 Difference]: Start difference. First operand has 200 places, 275 transitions, 3121 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:38:59,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 328 transitions, 4195 flow [2024-06-28 01:38:59,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 328 transitions, 3986 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:59,831 INFO L231 Difference]: Finished difference. Result has 202 places, 278 transitions, 3108 flow [2024-06-28 01:38:59,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2912, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3108, PETRI_PLACES=202, PETRI_TRANSITIONS=278} [2024-06-28 01:38:59,832 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 148 predicate places. [2024-06-28 01:38:59,832 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 278 transitions, 3108 flow [2024-06-28 01:38:59,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:59,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:59,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:59,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:38:59,833 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:38:59,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1656045424, now seen corresponding path program 5 times [2024-06-28 01:38:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:59,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970533373] [2024-06-28 01:38:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:59,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:01,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:01,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970533373] [2024-06-28 01:39:01,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970533373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:01,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:01,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:01,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773273557] [2024-06-28 01:39:01,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:01,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:01,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:01,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:01,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:01,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:01,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 278 transitions, 3108 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:01,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:01,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:01,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:02,870 INFO L124 PetriNetUnfolderBase]: 6633/10108 cut-off events. [2024-06-28 01:39:02,870 INFO L125 PetriNetUnfolderBase]: For 345272/345283 co-relation queries the response was YES. [2024-06-28 01:39:02,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65763 conditions, 10108 events. 6633/10108 cut-off events. For 345272/345283 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 61914 event pairs, 1470 based on Foata normal form. 8/9938 useless extension candidates. Maximal degree in co-relation 65674. Up to 8151 conditions per place. [2024-06-28 01:39:02,982 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 250 selfloop transitions, 81 changer transitions 0/341 dead transitions. [2024-06-28 01:39:02,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 341 transitions, 4243 flow [2024-06-28 01:39:02,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:02,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:39:02,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439814814814815 [2024-06-28 01:39:02,984 INFO L175 Difference]: Start difference. First operand has 202 places, 278 transitions, 3108 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:39:02,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 341 transitions, 4243 flow [2024-06-28 01:39:03,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 341 transitions, 4071 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:03,428 INFO L231 Difference]: Finished difference. Result has 205 places, 282 transitions, 3206 flow [2024-06-28 01:39:03,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2936, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3206, PETRI_PLACES=205, PETRI_TRANSITIONS=282} [2024-06-28 01:39:03,429 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-28 01:39:03,429 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 282 transitions, 3206 flow [2024-06-28 01:39:03,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:03,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:03,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:03,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:39:03,429 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:03,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:03,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2021798078, now seen corresponding path program 1 times [2024-06-28 01:39:03,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:03,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099455745] [2024-06-28 01:39:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:03,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:04,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:04,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099455745] [2024-06-28 01:39:04,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099455745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:04,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:04,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:39:04,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023298673] [2024-06-28 01:39:04,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:04,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:39:04,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:04,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:39:04,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:39:04,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:04,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 282 transitions, 3206 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:04,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:04,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:04,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:05,565 INFO L124 PetriNetUnfolderBase]: 6256/9691 cut-off events. [2024-06-28 01:39:05,566 INFO L125 PetriNetUnfolderBase]: For 353777/353869 co-relation queries the response was YES. [2024-06-28 01:39:05,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63457 conditions, 9691 events. 6256/9691 cut-off events. For 353777/353869 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 61073 event pairs, 1612 based on Foata normal form. 48/9489 useless extension candidates. Maximal degree in co-relation 63367. Up to 8628 conditions per place. [2024-06-28 01:39:05,669 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 261 selfloop transitions, 25 changer transitions 0/312 dead transitions. [2024-06-28 01:39:05,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 312 transitions, 4010 flow [2024-06-28 01:39:05,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 01:39:05,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 01:39:05,671 INFO L175 Difference]: Start difference. First operand has 205 places, 282 transitions, 3206 flow. Second operand 6 states and 148 transitions. [2024-06-28 01:39:05,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 312 transitions, 4010 flow [2024-06-28 01:39:06,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 312 transitions, 3769 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:06,032 INFO L231 Difference]: Finished difference. Result has 204 places, 287 transitions, 3114 flow [2024-06-28 01:39:06,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2975, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3114, PETRI_PLACES=204, PETRI_TRANSITIONS=287} [2024-06-28 01:39:06,033 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 150 predicate places. [2024-06-28 01:39:06,033 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 287 transitions, 3114 flow [2024-06-28 01:39:06,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:06,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:06,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:06,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:39:06,034 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:06,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:06,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1517342990, now seen corresponding path program 6 times [2024-06-28 01:39:06,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:06,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580977672] [2024-06-28 01:39:06,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:06,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:06,956 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 01:39:06,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:06,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580977672] [2024-06-28 01:39:06,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580977672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:06,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:06,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:06,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214734268] [2024-06-28 01:39:06,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:06,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:06,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:06,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:06,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:07,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:07,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 287 transitions, 3114 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:07,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:07,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:07,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:09,013 INFO L124 PetriNetUnfolderBase]: 6820/10412 cut-off events. [2024-06-28 01:39:09,014 INFO L125 PetriNetUnfolderBase]: For 377361/377361 co-relation queries the response was YES. [2024-06-28 01:39:09,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67698 conditions, 10412 events. 6820/10412 cut-off events. For 377361/377361 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 64502 event pairs, 1808 based on Foata normal form. 6/10262 useless extension candidates. Maximal degree in co-relation 67607. Up to 8494 conditions per place. [2024-06-28 01:39:09,147 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 287 selfloop transitions, 69 changer transitions 0/366 dead transitions. [2024-06-28 01:39:09,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 366 transitions, 4984 flow [2024-06-28 01:39:09,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:09,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-28 01:39:09,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-28 01:39:09,149 INFO L175 Difference]: Start difference. First operand has 204 places, 287 transitions, 3114 flow. Second operand 9 states and 232 transitions. [2024-06-28 01:39:09,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 366 transitions, 4984 flow [2024-06-28 01:39:09,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 366 transitions, 4918 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:09,641 INFO L231 Difference]: Finished difference. Result has 213 places, 301 transitions, 3557 flow [2024-06-28 01:39:09,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3048, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3557, PETRI_PLACES=213, PETRI_TRANSITIONS=301} [2024-06-28 01:39:09,642 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 159 predicate places. [2024-06-28 01:39:09,642 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 301 transitions, 3557 flow [2024-06-28 01:39:09,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:09,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:09,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:39:09,642 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:09,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash -212897792, now seen corresponding path program 1 times [2024-06-28 01:39:09,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:09,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656305407] [2024-06-28 01:39:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:10,624 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 01:39:10,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:10,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656305407] [2024-06-28 01:39:10,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656305407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:10,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:10,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:10,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777590736] [2024-06-28 01:39:10,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:10,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:10,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:10,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:10,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:10,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:10,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 301 transitions, 3557 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:10,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:10,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:10,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:12,678 INFO L124 PetriNetUnfolderBase]: 6849/10495 cut-off events. [2024-06-28 01:39:12,678 INFO L125 PetriNetUnfolderBase]: For 408159/408159 co-relation queries the response was YES. [2024-06-28 01:39:12,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71421 conditions, 10495 events. 6849/10495 cut-off events. For 408159/408159 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 65359 event pairs, 1901 based on Foata normal form. 3/10330 useless extension candidates. Maximal degree in co-relation 71326. Up to 9298 conditions per place. [2024-06-28 01:39:12,786 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 294 selfloop transitions, 47 changer transitions 0/351 dead transitions. [2024-06-28 01:39:12,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 351 transitions, 4567 flow [2024-06-28 01:39:12,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:12,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:39:12,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-06-28 01:39:12,787 INFO L175 Difference]: Start difference. First operand has 213 places, 301 transitions, 3557 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:39:12,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 351 transitions, 4567 flow [2024-06-28 01:39:13,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 351 transitions, 4353 flow, removed 92 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:13,266 INFO L231 Difference]: Finished difference. Result has 218 places, 305 transitions, 3581 flow [2024-06-28 01:39:13,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3357, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3581, PETRI_PLACES=218, PETRI_TRANSITIONS=305} [2024-06-28 01:39:13,267 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-06-28 01:39:13,267 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 305 transitions, 3581 flow [2024-06-28 01:39:13,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:13,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:13,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:13,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:39:13,268 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:13,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash -477852188, now seen corresponding path program 7 times [2024-06-28 01:39:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:13,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533271930] [2024-06-28 01:39:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:13,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:14,251 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 01:39:14,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:14,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533271930] [2024-06-28 01:39:14,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533271930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:14,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:14,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:14,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168188451] [2024-06-28 01:39:14,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:14,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:14,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:14,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:14,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:14,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:14,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 305 transitions, 3581 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:14,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:14,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:14,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:16,423 INFO L124 PetriNetUnfolderBase]: 6953/10624 cut-off events. [2024-06-28 01:39:16,423 INFO L125 PetriNetUnfolderBase]: For 423996/423996 co-relation queries the response was YES. [2024-06-28 01:39:16,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72116 conditions, 10624 events. 6953/10624 cut-off events. For 423996/423996 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 65974 event pairs, 1825 based on Foata normal form. 6/10467 useless extension candidates. Maximal degree in co-relation 72019. Up to 8877 conditions per place. [2024-06-28 01:39:16,523 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 289 selfloop transitions, 75 changer transitions 0/374 dead transitions. [2024-06-28 01:39:16,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 374 transitions, 5134 flow [2024-06-28 01:39:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:16,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:39:16,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:39:16,525 INFO L175 Difference]: Start difference. First operand has 218 places, 305 transitions, 3581 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:39:16,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 374 transitions, 5134 flow [2024-06-28 01:39:17,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 374 transitions, 4972 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:17,023 INFO L231 Difference]: Finished difference. Result has 223 places, 314 transitions, 3886 flow [2024-06-28 01:39:17,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3419, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3886, PETRI_PLACES=223, PETRI_TRANSITIONS=314} [2024-06-28 01:39:17,024 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 169 predicate places. [2024-06-28 01:39:17,024 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 314 transitions, 3886 flow [2024-06-28 01:39:17,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:17,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:17,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:17,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:39:17,025 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:17,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1310424006, now seen corresponding path program 4 times [2024-06-28 01:39:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:17,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077275500] [2024-06-28 01:39:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:17,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:18,024 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 01:39:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:18,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077275500] [2024-06-28 01:39:18,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077275500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:18,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:18,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:18,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993725003] [2024-06-28 01:39:18,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:18,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:18,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:18,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:18,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:18,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:18,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 314 transitions, 3886 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:18,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:18,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:18,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:20,023 INFO L124 PetriNetUnfolderBase]: 6947/10641 cut-off events. [2024-06-28 01:39:20,023 INFO L125 PetriNetUnfolderBase]: For 446948/446948 co-relation queries the response was YES. [2024-06-28 01:39:20,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73525 conditions, 10641 events. 6947/10641 cut-off events. For 446948/446948 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 66370 event pairs, 1968 based on Foata normal form. 4/10477 useless extension candidates. Maximal degree in co-relation 73425. Up to 9667 conditions per place. [2024-06-28 01:39:20,155 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 323 selfloop transitions, 32 changer transitions 0/365 dead transitions. [2024-06-28 01:39:20,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 365 transitions, 4836 flow [2024-06-28 01:39:20,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 01:39:20,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-06-28 01:39:20,157 INFO L175 Difference]: Start difference. First operand has 223 places, 314 transitions, 3886 flow. Second operand 9 states and 211 transitions. [2024-06-28 01:39:20,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 365 transitions, 4836 flow [2024-06-28 01:39:20,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 365 transitions, 4516 flow, removed 94 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:20,982 INFO L231 Difference]: Finished difference. Result has 226 places, 316 transitions, 3753 flow [2024-06-28 01:39:20,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3568, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3753, PETRI_PLACES=226, PETRI_TRANSITIONS=316} [2024-06-28 01:39:20,983 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 172 predicate places. [2024-06-28 01:39:20,983 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 316 transitions, 3753 flow [2024-06-28 01:39:20,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:20,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:20,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:20,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:39:20,984 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:20,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:20,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1310239308, now seen corresponding path program 2 times [2024-06-28 01:39:20,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:20,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768754685] [2024-06-28 01:39:20,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:20,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:22,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:22,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768754685] [2024-06-28 01:39:22,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768754685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:22,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:22,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:22,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429806564] [2024-06-28 01:39:22,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:22,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:22,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:22,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:22,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:22,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:22,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 316 transitions, 3753 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:22,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:22,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:22,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:24,266 INFO L124 PetriNetUnfolderBase]: 7015/10754 cut-off events. [2024-06-28 01:39:24,266 INFO L125 PetriNetUnfolderBase]: For 462307/462307 co-relation queries the response was YES. [2024-06-28 01:39:24,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73563 conditions, 10754 events. 7015/10754 cut-off events. For 462307/462307 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 67271 event pairs, 1968 based on Foata normal form. 6/10589 useless extension candidates. Maximal degree in co-relation 73462. Up to 9566 conditions per place. [2024-06-28 01:39:24,409 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 316 selfloop transitions, 36 changer transitions 0/362 dead transitions. [2024-06-28 01:39:24,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 362 transitions, 4849 flow [2024-06-28 01:39:24,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:39:24,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 01:39:24,410 INFO L175 Difference]: Start difference. First operand has 226 places, 316 transitions, 3753 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:39:24,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 362 transitions, 4849 flow [2024-06-28 01:39:24,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 362 transitions, 4682 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:24,990 INFO L231 Difference]: Finished difference. Result has 227 places, 319 transitions, 3782 flow [2024-06-28 01:39:24,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3586, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3782, PETRI_PLACES=227, PETRI_TRANSITIONS=319} [2024-06-28 01:39:24,990 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 173 predicate places. [2024-06-28 01:39:24,991 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 319 transitions, 3782 flow [2024-06-28 01:39:24,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:24,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:24,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:24,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:39:24,992 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:24,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:24,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1261551636, now seen corresponding path program 3 times [2024-06-28 01:39:24,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:24,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869021129] [2024-06-28 01:39:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:24,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:26,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:26,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869021129] [2024-06-28 01:39:26,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869021129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:26,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:26,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880792445] [2024-06-28 01:39:26,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:26,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:26,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:26,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:26,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:26,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:26,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 319 transitions, 3782 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:26,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:26,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:26,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:28,144 INFO L124 PetriNetUnfolderBase]: 7083/10850 cut-off events. [2024-06-28 01:39:28,144 INFO L125 PetriNetUnfolderBase]: For 481045/481045 co-relation queries the response was YES. [2024-06-28 01:39:28,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75000 conditions, 10850 events. 7083/10850 cut-off events. For 481045/481045 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 67825 event pairs, 1998 based on Foata normal form. 6/10687 useless extension candidates. Maximal degree in co-relation 74898. Up to 9804 conditions per place. [2024-06-28 01:39:28,253 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 321 selfloop transitions, 30 changer transitions 0/361 dead transitions. [2024-06-28 01:39:28,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 361 transitions, 4786 flow [2024-06-28 01:39:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:39:28,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-06-28 01:39:28,255 INFO L175 Difference]: Start difference. First operand has 227 places, 319 transitions, 3782 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:39:28,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 361 transitions, 4786 flow [2024-06-28 01:39:28,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 361 transitions, 4614 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:28,777 INFO L231 Difference]: Finished difference. Result has 229 places, 322 transitions, 3800 flow [2024-06-28 01:39:28,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3610, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3800, PETRI_PLACES=229, PETRI_TRANSITIONS=322} [2024-06-28 01:39:28,778 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 175 predicate places. [2024-06-28 01:39:28,778 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 322 transitions, 3800 flow [2024-06-28 01:39:28,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:28,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:28,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:28,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:39:28,779 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:28,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:28,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1261558580, now seen corresponding path program 8 times [2024-06-28 01:39:28,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:28,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517644187] [2024-06-28 01:39:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:28,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:29,716 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 01:39:29,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:29,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517644187] [2024-06-28 01:39:29,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517644187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:29,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:29,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:29,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162523390] [2024-06-28 01:39:29,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:29,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:29,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:29,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:29,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:29,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:29,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 322 transitions, 3800 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:29,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:29,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:29,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:31,787 INFO L124 PetriNetUnfolderBase]: 7167/10978 cut-off events. [2024-06-28 01:39:31,787 INFO L125 PetriNetUnfolderBase]: For 500970/500970 co-relation queries the response was YES. [2024-06-28 01:39:31,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76138 conditions, 10978 events. 7167/10978 cut-off events. For 500970/500970 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 68741 event pairs, 2004 based on Foata normal form. 6/10811 useless extension candidates. Maximal degree in co-relation 76035. Up to 9830 conditions per place. [2024-06-28 01:39:31,924 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 329 selfloop transitions, 35 changer transitions 0/374 dead transitions. [2024-06-28 01:39:31,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 374 transitions, 4859 flow [2024-06-28 01:39:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-28 01:39:31,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-06-28 01:39:31,926 INFO L175 Difference]: Start difference. First operand has 229 places, 322 transitions, 3800 flow. Second operand 9 states and 219 transitions. [2024-06-28 01:39:31,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 374 transitions, 4859 flow [2024-06-28 01:39:32,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 374 transitions, 4693 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:32,558 INFO L231 Difference]: Finished difference. Result has 232 places, 326 transitions, 3836 flow [2024-06-28 01:39:32,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3634, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3836, PETRI_PLACES=232, PETRI_TRANSITIONS=326} [2024-06-28 01:39:32,558 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 178 predicate places. [2024-06-28 01:39:32,559 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 326 transitions, 3836 flow [2024-06-28 01:39:32,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:32,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:32,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:32,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:39:32,559 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:32,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1517165360, now seen corresponding path program 9 times [2024-06-28 01:39:32,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:32,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199480847] [2024-06-28 01:39:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:32,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:33,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:33,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199480847] [2024-06-28 01:39:33,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199480847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:33,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:33,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:33,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457249079] [2024-06-28 01:39:33,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:33,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:33,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:33,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:33,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:33,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:33,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 326 transitions, 3836 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:33,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:33,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:33,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:35,813 INFO L124 PetriNetUnfolderBase]: 7254/11135 cut-off events. [2024-06-28 01:39:35,813 INFO L125 PetriNetUnfolderBase]: For 514448/514448 co-relation queries the response was YES. [2024-06-28 01:39:35,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77034 conditions, 11135 events. 7254/11135 cut-off events. For 514448/514448 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 70104 event pairs, 1882 based on Foata normal form. 6/10957 useless extension candidates. Maximal degree in co-relation 76930. Up to 9293 conditions per place. [2024-06-28 01:39:35,928 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 302 selfloop transitions, 83 changer transitions 0/395 dead transitions. [2024-06-28 01:39:35,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 395 transitions, 5363 flow [2024-06-28 01:39:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-06-28 01:39:35,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:39:35,929 INFO L175 Difference]: Start difference. First operand has 232 places, 326 transitions, 3836 flow. Second operand 9 states and 228 transitions. [2024-06-28 01:39:35,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 395 transitions, 5363 flow [2024-06-28 01:39:36,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 395 transitions, 5200 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:36,497 INFO L231 Difference]: Finished difference. Result has 236 places, 339 transitions, 4348 flow [2024-06-28 01:39:36,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3673, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4348, PETRI_PLACES=236, PETRI_TRANSITIONS=339} [2024-06-28 01:39:36,498 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 182 predicate places. [2024-06-28 01:39:36,498 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 339 transitions, 4348 flow [2024-06-28 01:39:36,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:36,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:36,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:36,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:39:36,498 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:36,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:36,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1252383696, now seen corresponding path program 4 times [2024-06-28 01:39:36,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:36,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943476574] [2024-06-28 01:39:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:36,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:37,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:37,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943476574] [2024-06-28 01:39:37,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943476574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:37,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:37,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799092982] [2024-06-28 01:39:37,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:37,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:37,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:37,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:37,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 339 transitions, 4348 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:37,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:37,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:37,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:39,578 INFO L124 PetriNetUnfolderBase]: 7332/11234 cut-off events. [2024-06-28 01:39:39,578 INFO L125 PetriNetUnfolderBase]: For 545025/545025 co-relation queries the response was YES. [2024-06-28 01:39:39,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79444 conditions, 11234 events. 7332/11234 cut-off events. For 545025/545025 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 70605 event pairs, 2031 based on Foata normal form. 6/11060 useless extension candidates. Maximal degree in co-relation 79337. Up to 10037 conditions per place. [2024-06-28 01:39:39,731 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 340 selfloop transitions, 44 changer transitions 0/394 dead transitions. [2024-06-28 01:39:39,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 394 transitions, 5569 flow [2024-06-28 01:39:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:39,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:39,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:39:39,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-06-28 01:39:39,732 INFO L175 Difference]: Start difference. First operand has 236 places, 339 transitions, 4348 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:39:39,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 394 transitions, 5569 flow [2024-06-28 01:39:40,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 394 transitions, 5213 flow, removed 160 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:40,802 INFO L231 Difference]: Finished difference. Result has 244 places, 355 transitions, 4421 flow [2024-06-28 01:39:40,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4000, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4421, PETRI_PLACES=244, PETRI_TRANSITIONS=355} [2024-06-28 01:39:40,802 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 190 predicate places. [2024-06-28 01:39:40,802 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 355 transitions, 4421 flow [2024-06-28 01:39:40,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:40,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:40,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:40,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:39:40,803 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:40,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:40,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1252058196, now seen corresponding path program 5 times [2024-06-28 01:39:40,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:40,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785117167] [2024-06-28 01:39:40,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:40,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:41,800 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 01:39:41,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:41,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785117167] [2024-06-28 01:39:41,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785117167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:41,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:41,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:39:41,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699748406] [2024-06-28 01:39:41,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:41,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:39:41,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:41,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:39:41,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:39:41,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:41,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 355 transitions, 4421 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:41,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:41,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:41,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:44,013 INFO L124 PetriNetUnfolderBase]: 7379/11360 cut-off events. [2024-06-28 01:39:44,014 INFO L125 PetriNetUnfolderBase]: For 542832/542832 co-relation queries the response was YES. [2024-06-28 01:39:44,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80644 conditions, 11360 events. 7379/11360 cut-off events. For 542832/542832 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 71968 event pairs, 1974 based on Foata normal form. 6/11170 useless extension candidates. Maximal degree in co-relation 80532. Up to 10131 conditions per place. [2024-06-28 01:39:44,168 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 350 selfloop transitions, 45 changer transitions 0/405 dead transitions. [2024-06-28 01:39:44,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 405 transitions, 5567 flow [2024-06-28 01:39:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:39:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:39:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:39:44,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130208333333334 [2024-06-28 01:39:44,169 INFO L175 Difference]: Start difference. First operand has 244 places, 355 transitions, 4421 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:39:44,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 405 transitions, 5567 flow [2024-06-28 01:39:45,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 405 transitions, 5385 flow, removed 69 selfloop flow, removed 3 redundant places. [2024-06-28 01:39:45,227 INFO L231 Difference]: Finished difference. Result has 250 places, 362 transitions, 4511 flow [2024-06-28 01:39:45,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4247, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4511, PETRI_PLACES=250, PETRI_TRANSITIONS=362} [2024-06-28 01:39:45,227 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 196 predicate places. [2024-06-28 01:39:45,228 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 362 transitions, 4511 flow [2024-06-28 01:39:45,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:45,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:45,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:45,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:39:45,228 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:45,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:45,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1465166108, now seen corresponding path program 2 times [2024-06-28 01:39:45,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:45,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169900995] [2024-06-28 01:39:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:45,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:45,880 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 01:39:45,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:45,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169900995] [2024-06-28 01:39:45,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169900995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:45,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:45,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:45,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991779277] [2024-06-28 01:39:45,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:45,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:45,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:45,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:45,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-28 01:39:45,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 362 transitions, 4511 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:45,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:45,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-28 01:39:45,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:47,800 INFO L124 PetriNetUnfolderBase]: 6881/10714 cut-off events. [2024-06-28 01:39:47,800 INFO L125 PetriNetUnfolderBase]: For 514263/514405 co-relation queries the response was YES. [2024-06-28 01:39:47,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75644 conditions, 10714 events. 6881/10714 cut-off events. For 514263/514405 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 69209 event pairs, 1971 based on Foata normal form. 81/10540 useless extension candidates. Maximal degree in co-relation 75530. Up to 9542 conditions per place. [2024-06-28 01:39:47,947 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 329 selfloop transitions, 16 changer transitions 0/378 dead transitions. [2024-06-28 01:39:47,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 378 transitions, 5247 flow [2024-06-28 01:39:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:39:47,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:39:47,949 INFO L175 Difference]: Start difference. First operand has 250 places, 362 transitions, 4511 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:39:47,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 378 transitions, 5247 flow [2024-06-28 01:39:48,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 378 transitions, 5005 flow, removed 81 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:48,843 INFO L231 Difference]: Finished difference. Result has 251 places, 362 transitions, 4309 flow [2024-06-28 01:39:48,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4269, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4309, PETRI_PLACES=251, PETRI_TRANSITIONS=362} [2024-06-28 01:39:48,844 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 197 predicate places. [2024-06-28 01:39:48,844 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 362 transitions, 4309 flow [2024-06-28 01:39:48,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:48,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:48,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:48,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:39:48,844 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:48,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:48,845 INFO L85 PathProgramCache]: Analyzing trace with hash -738587065, now seen corresponding path program 1 times [2024-06-28 01:39:48,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:48,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620140875] [2024-06-28 01:39:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:48,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:49,493 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 01:39:49,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:49,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620140875] [2024-06-28 01:39:49,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620140875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:49,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:49,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:49,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113040871] [2024-06-28 01:39:49,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:49,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:49,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:49,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:49,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:49,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:49,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 362 transitions, 4309 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:49,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:49,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:49,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:51,824 INFO L124 PetriNetUnfolderBase]: 7384/11383 cut-off events. [2024-06-28 01:39:51,824 INFO L125 PetriNetUnfolderBase]: For 526847/526847 co-relation queries the response was YES. [2024-06-28 01:39:51,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79271 conditions, 11383 events. 7384/11383 cut-off events. For 526847/526847 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 72397 event pairs, 2039 based on Foata normal form. 3/11185 useless extension candidates. Maximal degree in co-relation 79156. Up to 10258 conditions per place. [2024-06-28 01:39:51,967 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 340 selfloop transitions, 42 changer transitions 0/392 dead transitions. [2024-06-28 01:39:51,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 392 transitions, 5328 flow [2024-06-28 01:39:51,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:51,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:39:51,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-28 01:39:51,969 INFO L175 Difference]: Start difference. First operand has 251 places, 362 transitions, 4309 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:39:51,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 392 transitions, 5328 flow [2024-06-28 01:39:52,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 392 transitions, 5268 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:52,672 INFO L231 Difference]: Finished difference. Result has 252 places, 368 transitions, 4445 flow [2024-06-28 01:39:52,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4249, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4445, PETRI_PLACES=252, PETRI_TRANSITIONS=368} [2024-06-28 01:39:52,673 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-28 01:39:52,673 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 368 transitions, 4445 flow [2024-06-28 01:39:52,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:52,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:52,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:52,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:39:52,674 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:52,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1465159195, now seen corresponding path program 2 times [2024-06-28 01:39:52,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:52,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164222473] [2024-06-28 01:39:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:52,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:53,331 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 01:39:53,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:53,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164222473] [2024-06-28 01:39:53,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164222473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:53,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:53,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:39:53,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657710382] [2024-06-28 01:39:53,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:53,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:39:53,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:53,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:39:53,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:39:53,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:53,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 368 transitions, 4445 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:53,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:53,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:53,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:55,451 INFO L124 PetriNetUnfolderBase]: 7349/11310 cut-off events. [2024-06-28 01:39:55,451 INFO L125 PetriNetUnfolderBase]: For 536863/536872 co-relation queries the response was YES. [2024-06-28 01:39:55,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79214 conditions, 11310 events. 7349/11310 cut-off events. For 536863/536872 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 71573 event pairs, 2058 based on Foata normal form. 3/11119 useless extension candidates. Maximal degree in co-relation 79098. Up to 10207 conditions per place. [2024-06-28 01:39:55,631 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 334 selfloop transitions, 44 changer transitions 0/388 dead transitions. [2024-06-28 01:39:55,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 388 transitions, 5259 flow [2024-06-28 01:39:55,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:39:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:39:55,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:39:55,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:39:55,632 INFO L175 Difference]: Start difference. First operand has 252 places, 368 transitions, 4445 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:39:55,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 388 transitions, 5259 flow [2024-06-28 01:39:56,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 388 transitions, 5185 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:56,666 INFO L231 Difference]: Finished difference. Result has 254 places, 368 transitions, 4469 flow [2024-06-28 01:39:56,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4371, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4469, PETRI_PLACES=254, PETRI_TRANSITIONS=368} [2024-06-28 01:39:56,667 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 200 predicate places. [2024-06-28 01:39:56,667 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 368 transitions, 4469 flow [2024-06-28 01:39:56,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:56,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:56,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:56,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:39:56,667 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:39:56,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:56,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2009432829, now seen corresponding path program 1 times [2024-06-28 01:39:56,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:56,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935978975] [2024-06-28 01:39:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:56,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:57,407 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 01:39:57,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:57,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935978975] [2024-06-28 01:39:57,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935978975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:57,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:57,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:39:57,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990264187] [2024-06-28 01:39:57,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:57,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:39:57,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:57,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:39:57,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:39:57,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:39:57,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 368 transitions, 4469 flow. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:39:57,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:57,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:39:57,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:59,546 INFO L124 PetriNetUnfolderBase]: 7291/11079 cut-off events. [2024-06-28 01:39:59,546 INFO L125 PetriNetUnfolderBase]: For 544059/544201 co-relation queries the response was YES. [2024-06-28 01:39:59,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77836 conditions, 11079 events. 7291/11079 cut-off events. For 544059/544201 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 68883 event pairs, 2138 based on Foata normal form. 83/10928 useless extension candidates. Maximal degree in co-relation 77720. Up to 10135 conditions per place. [2024-06-28 01:39:59,713 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 344 selfloop transitions, 21 changer transitions 0/396 dead transitions. [2024-06-28 01:39:59,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 396 transitions, 5303 flow [2024-06-28 01:39:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:39:59,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:39:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:39:59,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2024-06-28 01:39:59,714 INFO L175 Difference]: Start difference. First operand has 254 places, 368 transitions, 4469 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:39:59,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 396 transitions, 5303 flow [2024-06-28 01:40:00,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 396 transitions, 5159 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:00,639 INFO L231 Difference]: Finished difference. Result has 255 places, 371 transitions, 4409 flow [2024-06-28 01:40:00,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4325, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4409, PETRI_PLACES=255, PETRI_TRANSITIONS=371} [2024-06-28 01:40:00,640 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 201 predicate places. [2024-06-28 01:40:00,640 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 371 transitions, 4409 flow [2024-06-28 01:40:00,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 9 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:00,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:00,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:00,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:40:00,641 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:00,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:00,641 INFO L85 PathProgramCache]: Analyzing trace with hash 2119059653, now seen corresponding path program 1 times [2024-06-28 01:40:00,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:00,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637876123] [2024-06-28 01:40:00,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:00,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:00,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:01,894 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 01:40:01,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:01,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637876123] [2024-06-28 01:40:01,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637876123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:01,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:01,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:01,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134965448] [2024-06-28 01:40:01,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:01,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:01,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:01,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:02,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:02,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 371 transitions, 4409 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:02,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:02,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:02,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:04,628 INFO L124 PetriNetUnfolderBase]: 8355/12842 cut-off events. [2024-06-28 01:40:04,628 INFO L125 PetriNetUnfolderBase]: For 732456/732460 co-relation queries the response was YES. [2024-06-28 01:40:04,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96277 conditions, 12842 events. 8355/12842 cut-off events. For 732456/732460 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 82415 event pairs, 1698 based on Foata normal form. 28/12579 useless extension candidates. Maximal degree in co-relation 96160. Up to 9697 conditions per place. [2024-06-28 01:40:04,813 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 426 selfloop transitions, 60 changer transitions 0/496 dead transitions. [2024-06-28 01:40:04,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 496 transitions, 6809 flow [2024-06-28 01:40:04,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:04,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 294 transitions. [2024-06-28 01:40:04,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568181818181818 [2024-06-28 01:40:04,815 INFO L175 Difference]: Start difference. First operand has 255 places, 371 transitions, 4409 flow. Second operand 11 states and 294 transitions. [2024-06-28 01:40:04,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 496 transitions, 6809 flow [2024-06-28 01:40:06,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 496 transitions, 6747 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:06,379 INFO L231 Difference]: Finished difference. Result has 264 places, 394 transitions, 4946 flow [2024-06-28 01:40:06,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4347, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4946, PETRI_PLACES=264, PETRI_TRANSITIONS=394} [2024-06-28 01:40:06,388 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 210 predicate places. [2024-06-28 01:40:06,388 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 394 transitions, 4946 flow [2024-06-28 01:40:06,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:06,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:06,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:06,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:40:06,390 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:06,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash 830939721, now seen corresponding path program 2 times [2024-06-28 01:40:06,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:06,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277455892] [2024-06-28 01:40:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:06,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:07,677 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 01:40:07,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:07,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277455892] [2024-06-28 01:40:07,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277455892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:07,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:07,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:07,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732871026] [2024-06-28 01:40:07,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:07,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:07,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:07,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:07,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:07,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:07,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 394 transitions, 4946 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:07,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:07,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:07,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:10,599 INFO L124 PetriNetUnfolderBase]: 8562/13141 cut-off events. [2024-06-28 01:40:10,600 INFO L125 PetriNetUnfolderBase]: For 817062/817066 co-relation queries the response was YES. [2024-06-28 01:40:10,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102474 conditions, 13141 events. 8562/13141 cut-off events. For 817062/817066 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 85014 event pairs, 2067 based on Foata normal form. 28/12918 useless extension candidates. Maximal degree in co-relation 102353. Up to 10334 conditions per place. [2024-06-28 01:40:10,806 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 426 selfloop transitions, 59 changer transitions 0/495 dead transitions. [2024-06-28 01:40:10,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 495 transitions, 7098 flow [2024-06-28 01:40:10,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 289 transitions. [2024-06-28 01:40:10,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473484848484849 [2024-06-28 01:40:10,808 INFO L175 Difference]: Start difference. First operand has 264 places, 394 transitions, 4946 flow. Second operand 11 states and 289 transitions. [2024-06-28 01:40:10,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 495 transitions, 7098 flow [2024-06-28 01:40:12,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 495 transitions, 6941 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:12,442 INFO L231 Difference]: Finished difference. Result has 272 places, 399 transitions, 5148 flow [2024-06-28 01:40:12,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4789, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5148, PETRI_PLACES=272, PETRI_TRANSITIONS=399} [2024-06-28 01:40:12,443 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 218 predicate places. [2024-06-28 01:40:12,443 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 399 transitions, 5148 flow [2024-06-28 01:40:12,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:12,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:12,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:12,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:40:12,444 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:12,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:12,445 INFO L85 PathProgramCache]: Analyzing trace with hash 830943441, now seen corresponding path program 3 times [2024-06-28 01:40:12,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:12,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420053052] [2024-06-28 01:40:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:12,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:13,589 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 01:40:13,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:13,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420053052] [2024-06-28 01:40:13,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420053052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:13,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:13,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:13,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831707410] [2024-06-28 01:40:13,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:13,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:13,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:13,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:13,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:13,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:13,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 399 transitions, 5148 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:13,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:13,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:13,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:16,830 INFO L124 PetriNetUnfolderBase]: 8912/13358 cut-off events. [2024-06-28 01:40:16,830 INFO L125 PetriNetUnfolderBase]: For 901807/901811 co-relation queries the response was YES. [2024-06-28 01:40:16,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107969 conditions, 13358 events. 8912/13358 cut-off events. For 901807/901811 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 84043 event pairs, 1910 based on Foata normal form. 34/13251 useless extension candidates. Maximal degree in co-relation 107844. Up to 11465 conditions per place. [2024-06-28 01:40:17,057 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 375 selfloop transitions, 103 changer transitions 0/488 dead transitions. [2024-06-28 01:40:17,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 488 transitions, 6878 flow [2024-06-28 01:40:17,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 288 transitions. [2024-06-28 01:40:17,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-28 01:40:17,058 INFO L175 Difference]: Start difference. First operand has 272 places, 399 transitions, 5148 flow. Second operand 11 states and 288 transitions. [2024-06-28 01:40:17,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 488 transitions, 6878 flow [2024-06-28 01:40:19,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 488 transitions, 6697 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:19,026 INFO L231 Difference]: Finished difference. Result has 277 places, 402 transitions, 5336 flow [2024-06-28 01:40:19,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4967, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5336, PETRI_PLACES=277, PETRI_TRANSITIONS=402} [2024-06-28 01:40:19,026 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 223 predicate places. [2024-06-28 01:40:19,027 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 402 transitions, 5336 flow [2024-06-28 01:40:19,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:19,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:19,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:19,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:40:19,027 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:19,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash 917635251, now seen corresponding path program 4 times [2024-06-28 01:40:19,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:19,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132803579] [2024-06-28 01:40:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:19,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:20,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:20,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:20,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132803579] [2024-06-28 01:40:20,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132803579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:20,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:20,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:20,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115546790] [2024-06-28 01:40:20,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:20,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:20,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:20,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:20,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:20,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:20,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 402 transitions, 5336 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:20,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:20,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:20,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:24,743 INFO L124 PetriNetUnfolderBase]: 9057/13941 cut-off events. [2024-06-28 01:40:24,743 INFO L125 PetriNetUnfolderBase]: For 883535/883539 co-relation queries the response was YES. [2024-06-28 01:40:24,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108317 conditions, 13941 events. 9057/13941 cut-off events. For 883535/883539 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 91886 event pairs, 2299 based on Foata normal form. 40/13728 useless extension candidates. Maximal degree in co-relation 108190. Up to 11937 conditions per place. [2024-06-28 01:40:24,906 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 428 selfloop transitions, 51 changer transitions 0/489 dead transitions. [2024-06-28 01:40:24,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 489 transitions, 6971 flow [2024-06-28 01:40:24,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:24,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 282 transitions. [2024-06-28 01:40:24,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-06-28 01:40:24,913 INFO L175 Difference]: Start difference. First operand has 277 places, 402 transitions, 5336 flow. Second operand 11 states and 282 transitions. [2024-06-28 01:40:24,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 489 transitions, 6971 flow [2024-06-28 01:40:26,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 489 transitions, 6674 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 01:40:26,324 INFO L231 Difference]: Finished difference. Result has 281 places, 407 transitions, 5332 flow [2024-06-28 01:40:26,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5039, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5332, PETRI_PLACES=281, PETRI_TRANSITIONS=407} [2024-06-28 01:40:26,325 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 227 predicate places. [2024-06-28 01:40:26,325 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 407 transitions, 5332 flow [2024-06-28 01:40:26,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:26,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:26,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:26,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:40:26,325 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:26,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:26,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1486838209, now seen corresponding path program 1 times [2024-06-28 01:40:26,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:26,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316991554] [2024-06-28 01:40:26,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:26,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:27,475 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 01:40:27,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:27,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316991554] [2024-06-28 01:40:27,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316991554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:27,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:27,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:40:27,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229876703] [2024-06-28 01:40:27,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:27,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:40:27,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:27,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:40:27,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:40:27,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:27,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 407 transitions, 5332 flow. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:27,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:27,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:27,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:31,011 INFO L124 PetriNetUnfolderBase]: 9124/13999 cut-off events. [2024-06-28 01:40:31,012 INFO L125 PetriNetUnfolderBase]: For 808621/808634 co-relation queries the response was YES. [2024-06-28 01:40:31,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106575 conditions, 13999 events. 9124/13999 cut-off events. For 808621/808634 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 91902 event pairs, 2087 based on Foata normal form. 12/13774 useless extension candidates. Maximal degree in co-relation 106445. Up to 11812 conditions per place. [2024-06-28 01:40:31,198 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 377 selfloop transitions, 82 changer transitions 0/469 dead transitions. [2024-06-28 01:40:31,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 469 transitions, 6910 flow [2024-06-28 01:40:31,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:40:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:40:31,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-06-28 01:40:31,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 01:40:31,199 INFO L175 Difference]: Start difference. First operand has 281 places, 407 transitions, 5332 flow. Second operand 9 states and 234 transitions. [2024-06-28 01:40:31,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 469 transitions, 6910 flow [2024-06-28 01:40:33,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 469 transitions, 6752 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 01:40:33,453 INFO L231 Difference]: Finished difference. Result has 283 places, 410 transitions, 5488 flow [2024-06-28 01:40:33,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5174, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5488, PETRI_PLACES=283, PETRI_TRANSITIONS=410} [2024-06-28 01:40:33,453 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 229 predicate places. [2024-06-28 01:40:33,454 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 410 transitions, 5488 flow [2024-06-28 01:40:33,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:33,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:33,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:33,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:40:33,454 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:33,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:33,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1486832257, now seen corresponding path program 5 times [2024-06-28 01:40:33,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:33,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423448506] [2024-06-28 01:40:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:33,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:34,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:34,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423448506] [2024-06-28 01:40:34,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423448506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:34,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:34,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:34,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062637481] [2024-06-28 01:40:34,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:34,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:34,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:34,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:34,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:34,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 410 transitions, 5488 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:34,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:34,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:34,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:38,453 INFO L124 PetriNetUnfolderBase]: 9538/14165 cut-off events. [2024-06-28 01:40:38,453 INFO L125 PetriNetUnfolderBase]: For 874112/874125 co-relation queries the response was YES. [2024-06-28 01:40:38,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110803 conditions, 14165 events. 9538/14165 cut-off events. For 874112/874125 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 88604 event pairs, 1733 based on Foata normal form. 36/14117 useless extension candidates. Maximal degree in co-relation 110672. Up to 11601 conditions per place. [2024-06-28 01:40:38,682 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 348 selfloop transitions, 150 changer transitions 0/508 dead transitions. [2024-06-28 01:40:38,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 508 transitions, 7957 flow [2024-06-28 01:40:38,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-06-28 01:40:38,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 01:40:38,684 INFO L175 Difference]: Start difference. First operand has 283 places, 410 transitions, 5488 flow. Second operand 10 states and 264 transitions. [2024-06-28 01:40:38,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 508 transitions, 7957 flow [2024-06-28 01:40:40,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 508 transitions, 7663 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-28 01:40:40,445 INFO L231 Difference]: Finished difference. Result has 290 places, 432 transitions, 6266 flow [2024-06-28 01:40:40,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5194, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6266, PETRI_PLACES=290, PETRI_TRANSITIONS=432} [2024-06-28 01:40:40,445 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 236 predicate places. [2024-06-28 01:40:40,445 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 432 transitions, 6266 flow [2024-06-28 01:40:40,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:40,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:40,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:40,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:40:40,446 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:40,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:40,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1486684387, now seen corresponding path program 6 times [2024-06-28 01:40:40,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:40,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136484141] [2024-06-28 01:40:40,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:40,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:41,808 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 01:40:41,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:41,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136484141] [2024-06-28 01:40:41,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136484141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:41,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:41,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:41,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461857388] [2024-06-28 01:40:41,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:41,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:41,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:41,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:41,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:41,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:41,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 432 transitions, 6266 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:41,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:41,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:41,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:45,782 INFO L124 PetriNetUnfolderBase]: 10165/15114 cut-off events. [2024-06-28 01:40:45,782 INFO L125 PetriNetUnfolderBase]: For 1074616/1074629 co-relation queries the response was YES. [2024-06-28 01:40:45,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126575 conditions, 15114 events. 10165/15114 cut-off events. For 1074616/1074629 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 96008 event pairs, 1835 based on Foata normal form. 30/15060 useless extension candidates. Maximal degree in co-relation 126439. Up to 11204 conditions per place. [2024-06-28 01:40:46,024 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 355 selfloop transitions, 160 changer transitions 0/525 dead transitions. [2024-06-28 01:40:46,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 525 transitions, 9034 flow [2024-06-28 01:40:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:46,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-06-28 01:40:46,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 01:40:46,026 INFO L175 Difference]: Start difference. First operand has 290 places, 432 transitions, 6266 flow. Second operand 10 states and 270 transitions. [2024-06-28 01:40:46,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 525 transitions, 9034 flow [2024-06-28 01:40:49,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 525 transitions, 8437 flow, removed 227 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:49,133 INFO L231 Difference]: Finished difference. Result has 298 places, 439 transitions, 6335 flow [2024-06-28 01:40:49,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5669, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6335, PETRI_PLACES=298, PETRI_TRANSITIONS=439} [2024-06-28 01:40:49,134 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 244 predicate places. [2024-06-28 01:40:49,134 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 439 transitions, 6335 flow [2024-06-28 01:40:49,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:49,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:49,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:49,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:40:49,135 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:49,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:49,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1492402399, now seen corresponding path program 2 times [2024-06-28 01:40:49,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:49,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478176345] [2024-06-28 01:40:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:49,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:50,374 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 01:40:50,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:50,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478176345] [2024-06-28 01:40:50,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478176345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:50,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:50,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:50,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594969286] [2024-06-28 01:40:50,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:50,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:50,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:50,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:50,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:50,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:50,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 439 transitions, 6335 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:50,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:50,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:50,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:54,638 INFO L124 PetriNetUnfolderBase]: 10251/15820 cut-off events. [2024-06-28 01:40:54,638 INFO L125 PetriNetUnfolderBase]: For 1069842/1069855 co-relation queries the response was YES. [2024-06-28 01:40:54,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127621 conditions, 15820 events. 10251/15820 cut-off events. For 1069842/1069855 co-relation queries the response was YES. Maximal size of possible extension queue 742. Compared 107132 event pairs, 2341 based on Foata normal form. 12/15551 useless extension candidates. Maximal degree in co-relation 127482. Up to 13501 conditions per place. [2024-06-28 01:40:54,912 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 403 selfloop transitions, 87 changer transitions 0/500 dead transitions. [2024-06-28 01:40:54,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 500 transitions, 7893 flow [2024-06-28 01:40:54,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:40:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:40:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-06-28 01:40:54,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-06-28 01:40:54,913 INFO L175 Difference]: Start difference. First operand has 298 places, 439 transitions, 6335 flow. Second operand 9 states and 233 transitions. [2024-06-28 01:40:54,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 500 transitions, 7893 flow [2024-06-28 01:40:57,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 500 transitions, 7566 flow, removed 81 selfloop flow, removed 5 redundant places. [2024-06-28 01:40:57,222 INFO L231 Difference]: Finished difference. Result has 302 places, 442 transitions, 6350 flow [2024-06-28 01:40:57,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6008, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6350, PETRI_PLACES=302, PETRI_TRANSITIONS=442} [2024-06-28 01:40:57,223 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 248 predicate places. [2024-06-28 01:40:57,223 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 442 transitions, 6350 flow [2024-06-28 01:40:57,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:57,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:57,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:57,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:40:57,223 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:57,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash 196694225, now seen corresponding path program 7 times [2024-06-28 01:40:57,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:57,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492317426] [2024-06-28 01:40:57,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:57,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:58,545 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 01:40:58,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:58,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492317426] [2024-06-28 01:40:58,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492317426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:58,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:58,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:58,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207957625] [2024-06-28 01:40:58,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:58,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:58,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:58,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:58,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:58,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 48 [2024-06-28 01:40:58,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 442 transitions, 6350 flow. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 11 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:58,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:58,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 48 [2024-06-28 01:40:58,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand