./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix019.opt.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/mix019.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix019.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix019.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:26:54,360 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:26:54,407 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:26:54,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:26:54,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:26:54,443 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:26:54,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:26:54,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:26:54,453 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:26:54,457 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:26:54,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:26:54,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:26:54,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:26:54,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:26:54,461 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:26:54,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:26:54,461 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:26:54,462 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:26:54,462 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:26:54,462 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:26:54,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:26:54,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:26:54,463 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:26:54,463 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:26:54,463 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:26:54,463 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:26:54,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:26:54,464 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:26:54,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:26:54,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:26:54,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:26:54,466 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:26:54,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:26:54,466 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:26:54,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:26:54,467 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:26:54,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:26:54,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:26:54,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:26:54,467 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:26:54,467 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:26:54,468 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:26:54,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:26:54,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:26:54,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:26:54,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:26:54,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:26:54,708 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:26:54,709 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:26:54,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix019.opt.i [2024-06-28 01:26:55,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:26:56,015 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:26:56,016 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix019.opt.i [2024-06-28 01:26:56,027 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a36aa82b/ee017dac25b94d49ad222744ab3fe58d/FLAGec18c6880 [2024-06-28 01:26:56,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a36aa82b/ee017dac25b94d49ad222744ab3fe58d [2024-06-28 01:26:56,042 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:26:56,043 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:26:56,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix019.opt.yml/witness.yml [2024-06-28 01:26:56,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:26:56,181 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:26:56,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:26:56,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:26:56,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:26:56,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:26:56" (1/2) ... [2024-06-28 01:26:56,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e16b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:26:56, skipping insertion in model container [2024-06-28 01:26:56,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:26:56" (1/2) ... [2024-06-28 01:26:56,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f334f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:26:56, skipping insertion in model container [2024-06-28 01:26:56,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:26:56" (2/2) ... [2024-06-28 01:26:56,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e16b90 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56, skipping insertion in model container [2024-06-28 01:26:56,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:26:56" (2/2) ... [2024-06-28 01:26:56,190 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:26:56,266 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:26:56,267 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] ((((((((((((((((((! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:26:56,267 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:26:56,267 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] ((((((((((((((((((! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || ((((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 01:26:56,268 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:26:56,268 INFO L106 edCorrectnessWitness]: ghost_update [L842-L842] multithreaded = 1; [2024-06-28 01:26:56,305 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:26:56,434 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/mix019.opt.i[944,957] [2024-06-28 01:26:56,603 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:26:56,615 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:26:56,643 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/mix019.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:26:56,728 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:26:56,804 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:26:56,805 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56 WrapperNode [2024-06-28 01:26:56,805 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:26:56,806 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:26:56,806 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:26:56,806 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:26:56,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (1/1) ... [2024-06-28 01:26:56,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (1/1) ... [2024-06-28 01:26:56,912 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2024-06-28 01:26:56,912 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:26:56,913 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:26:56,913 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:26:56,913 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:26:56,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (1/1) ... [2024-06-28 01:26:56,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (1/1) ... [2024-06-28 01:26:56,931 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (1/1) ... [2024-06-28 01:26:56,957 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 01:26:56,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (1/1) ... [2024-06-28 01:26:56,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (1/1) ... [2024-06-28 01:26:56,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (1/1) ... [2024-06-28 01:26:56,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (1/1) ... [2024-06-28 01:26:56,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (1/1) ... [2024-06-28 01:26:56,969 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (1/1) ... [2024-06-28 01:26:56,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:26:56,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:26:56,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:26:56,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:26:56,987 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (1/1) ... [2024-06-28 01:26:56,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:26:56,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:26:57,030 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 01:26:57,055 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 01:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:26:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:26:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:26:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:26:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:26:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:26:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:26:57,068 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:26:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:26:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:26:57,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:26:57,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:26:57,070 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 01:26:57,208 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:26:57,209 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:26:57,501 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:26:57,501 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:26:57,623 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:26:57,623 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:26:57,624 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:26:57 BoogieIcfgContainer [2024-06-28 01:26:57,624 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:26:57,626 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:26:57,626 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:26:57,628 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:26:57,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:26:56" (1/4) ... [2024-06-28 01:26:57,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d19eeb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:26:57, skipping insertion in model container [2024-06-28 01:26:57,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:26:56" (2/4) ... [2024-06-28 01:26:57,630 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d19eeb0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:26:57, skipping insertion in model container [2024-06-28 01:26:57,630 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:26:56" (3/4) ... [2024-06-28 01:26:57,631 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d19eeb0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:26:57, skipping insertion in model container [2024-06-28 01:26:57,631 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:26:57" (4/4) ... [2024-06-28 01:26:57,632 INFO L112 eAbstractionObserver]: Analyzing ICFG mix019.opt.i [2024-06-28 01:26:57,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:26:57,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:26:57,647 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:26:57,686 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:26:57,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:26:57,752 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-28 01:26:57,753 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:26:57,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-28 01:26:57,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-28 01:26:57,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-28 01:26:57,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:26:57,778 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;@771e536b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:26:57,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:26:57,783 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:26:57,783 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:26:57,783 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:26:57,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:57,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:26:57,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:57,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:57,790 INFO L85 PathProgramCache]: Analyzing trace with hash 377362716, now seen corresponding path program 1 times [2024-06-28 01:26:57,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:57,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440449186] [2024-06-28 01:26:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:57,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:58,796 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 01:26:58,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:58,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440449186] [2024-06-28 01:26:58,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440449186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:58,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:58,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:26:58,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31836592] [2024-06-28 01:26:58,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:58,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:26:58,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:58,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:26:58,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:26:58,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-06-28 01:26:58,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:58,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:58,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-06-28 01:26:58,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:59,472 INFO L124 PetriNetUnfolderBase]: 3005/5068 cut-off events. [2024-06-28 01:26:59,473 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 01:26:59,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9483 conditions, 5068 events. 3005/5068 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 33232 event pairs, 2435 based on Foata normal form. 151/4808 useless extension candidates. Maximal degree in co-relation 9471. Up to 4336 conditions per place. [2024-06-28 01:26:59,505 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 40 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-28 01:26:59,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 221 flow [2024-06-28 01:26:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:26:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:26:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-28 01:26:59,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6950354609929078 [2024-06-28 01:26:59,517 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 98 transitions. [2024-06-28 01:26:59,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 221 flow [2024-06-28 01:26:59,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 216 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:26:59,525 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-28 01:26:59,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 01:26:59,530 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-28 01:26:59,530 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-28 01:26:59,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:59,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:59,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:26:59,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:26:59,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:26:59,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:59,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1868505873, now seen corresponding path program 1 times [2024-06-28 01:26:59,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:59,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627899093] [2024-06-28 01:26:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:59,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:00,088 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 01:27:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:00,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627899093] [2024-06-28 01:27:00,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627899093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:00,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:00,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:27:00,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005436286] [2024-06-28 01:27:00,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:00,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:27:00,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:27:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:27:00,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-28 01:27:00,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:00,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:00,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-28 01:27:00,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:00,562 INFO L124 PetriNetUnfolderBase]: 3428/5010 cut-off events. [2024-06-28 01:27:00,562 INFO L125 PetriNetUnfolderBase]: For 716/716 co-relation queries the response was YES. [2024-06-28 01:27:00,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11220 conditions, 5010 events. 3428/5010 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 27845 event pairs, 1673 based on Foata normal form. 3/4832 useless extension candidates. Maximal degree in co-relation 11208. Up to 4908 conditions per place. [2024-06-28 01:27:00,582 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 52 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2024-06-28 01:27:00,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 317 flow [2024-06-28 01:27:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:27:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:27:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-06-28 01:27:00,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-06-28 01:27:00,584 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 124 transitions. [2024-06-28 01:27:00,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 317 flow [2024-06-28 01:27:00,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:27:00,586 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 175 flow [2024-06-28 01:27:00,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 01:27:00,587 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-28 01:27:00,587 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 175 flow [2024-06-28 01:27:00,587 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 01:27:00,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:00,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:00,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:27:00,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:00,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:00,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2089108667, now seen corresponding path program 1 times [2024-06-28 01:27:00,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:00,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756640004] [2024-06-28 01:27:00,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:00,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:01,121 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 01:27:01,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:01,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756640004] [2024-06-28 01:27:01,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756640004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:01,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:01,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:27:01,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746420276] [2024-06-28 01:27:01,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:01,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:27:01,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:01,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:27:01,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:27:01,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-28 01:27:01,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 01:27:01,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:01,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-28 01:27:01,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:01,692 INFO L124 PetriNetUnfolderBase]: 3487/5122 cut-off events. [2024-06-28 01:27:01,692 INFO L125 PetriNetUnfolderBase]: For 1982/1982 co-relation queries the response was YES. [2024-06-28 01:27:01,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12637 conditions, 5122 events. 3487/5122 cut-off events. For 1982/1982 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 28213 event pairs, 1004 based on Foata normal form. 7/4934 useless extension candidates. Maximal degree in co-relation 12623. Up to 4772 conditions per place. [2024-06-28 01:27:01,719 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 72 selfloop transitions, 21 changer transitions 0/105 dead transitions. [2024-06-28 01:27:01,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 529 flow [2024-06-28 01:27:01,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:27:01,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:27:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-06-28 01:27:01,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7021276595744681 [2024-06-28 01:27:01,725 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 175 flow. Second operand 5 states and 165 transitions. [2024-06-28 01:27:01,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 529 flow [2024-06-28 01:27:01,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 105 transitions, 510 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:27:01,730 INFO L231 Difference]: Finished difference. Result has 61 places, 65 transitions, 304 flow [2024-06-28 01:27:01,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=61, PETRI_TRANSITIONS=65} [2024-06-28 01:27:01,731 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-06-28 01:27:01,731 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 65 transitions, 304 flow [2024-06-28 01:27:01,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 01:27:01,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:01,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:01,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:27:01,732 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:01,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:01,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1884343888, now seen corresponding path program 1 times [2024-06-28 01:27:01,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:01,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677260598] [2024-06-28 01:27:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:01,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:02,580 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 01:27:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:02,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677260598] [2024-06-28 01:27:02,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677260598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:02,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:02,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:27:02,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702544000] [2024-06-28 01:27:02,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:02,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:27:02,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:27:02,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:27:02,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-28 01:27:02,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 65 transitions, 304 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:02,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:02,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-28 01:27:02,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:03,271 INFO L124 PetriNetUnfolderBase]: 3729/5468 cut-off events. [2024-06-28 01:27:03,272 INFO L125 PetriNetUnfolderBase]: For 5323/5323 co-relation queries the response was YES. [2024-06-28 01:27:03,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16129 conditions, 5468 events. 3729/5468 cut-off events. For 5323/5323 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 30273 event pairs, 628 based on Foata normal form. 26/5231 useless extension candidates. Maximal degree in co-relation 16112. Up to 4816 conditions per place. [2024-06-28 01:27:03,303 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 84 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-06-28 01:27:03,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 120 transitions, 684 flow [2024-06-28 01:27:03,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:27:03,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:27:03,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-06-28 01:27:03,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6914893617021277 [2024-06-28 01:27:03,305 INFO L175 Difference]: Start difference. First operand has 61 places, 65 transitions, 304 flow. Second operand 6 states and 195 transitions. [2024-06-28 01:27:03,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 120 transitions, 684 flow [2024-06-28 01:27:03,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 120 transitions, 672 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 01:27:03,311 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 371 flow [2024-06-28 01:27:03,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=371, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2024-06-28 01:27:03,312 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2024-06-28 01:27:03,312 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 371 flow [2024-06-28 01:27:03,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:03,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:03,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:03,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:27:03,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:03,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:03,313 INFO L85 PathProgramCache]: Analyzing trace with hash 961869217, now seen corresponding path program 1 times [2024-06-28 01:27:03,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:03,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226211125] [2024-06-28 01:27:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:03,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:03,827 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 01:27:03,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:03,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226211125] [2024-06-28 01:27:03,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226211125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:03,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:03,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:27:03,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629042014] [2024-06-28 01:27:03,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:03,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:27:03,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:03,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:27:03,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:27:03,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:27:03,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 371 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:03,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:03,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:27:03,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:04,509 INFO L124 PetriNetUnfolderBase]: 3758/5693 cut-off events. [2024-06-28 01:27:04,509 INFO L125 PetriNetUnfolderBase]: For 7515/7515 co-relation queries the response was YES. [2024-06-28 01:27:04,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17843 conditions, 5693 events. 3758/5693 cut-off events. For 7515/7515 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 32568 event pairs, 1038 based on Foata normal form. 4/5400 useless extension candidates. Maximal degree in co-relation 17822. Up to 5353 conditions per place. [2024-06-28 01:27:04,541 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 68 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2024-06-28 01:27:04,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 577 flow [2024-06-28 01:27:04,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:27:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:27:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-28 01:27:04,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5659574468085107 [2024-06-28 01:27:04,543 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 371 flow. Second operand 5 states and 133 transitions. [2024-06-28 01:27:04,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 577 flow [2024-06-28 01:27:04,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 89 transitions, 516 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:04,554 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 339 flow [2024-06-28 01:27:04,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-06-28 01:27:04,556 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-28 01:27:04,559 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 339 flow [2024-06-28 01:27:04,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:04,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:04,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:04,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:27:04,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:04,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:04,561 INFO L85 PathProgramCache]: Analyzing trace with hash -255795959, now seen corresponding path program 1 times [2024-06-28 01:27:04,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:04,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131635097] [2024-06-28 01:27:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:04,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:04,625 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 01:27:04,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:04,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131635097] [2024-06-28 01:27:04,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131635097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:04,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:04,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:27:04,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195217831] [2024-06-28 01:27:04,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:04,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:27:04,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:04,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:27:04,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:27:04,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 47 [2024-06-28 01:27:04,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 339 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:04,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:04,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 47 [2024-06-28 01:27:04,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:04,834 INFO L124 PetriNetUnfolderBase]: 1243/2495 cut-off events. [2024-06-28 01:27:04,834 INFO L125 PetriNetUnfolderBase]: For 2377/2593 co-relation queries the response was YES. [2024-06-28 01:27:04,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5859 conditions, 2495 events. 1243/2495 cut-off events. For 2377/2593 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18508 event pairs, 239 based on Foata normal form. 3/2307 useless extension candidates. Maximal degree in co-relation 5837. Up to 1481 conditions per place. [2024-06-28 01:27:04,848 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 26 selfloop transitions, 8 changer transitions 0/68 dead transitions. [2024-06-28 01:27:04,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 367 flow [2024-06-28 01:27:04,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:27:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:27:04,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-28 01:27:04,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7375886524822695 [2024-06-28 01:27:04,849 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 339 flow. Second operand 3 states and 104 transitions. [2024-06-28 01:27:04,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 367 flow [2024-06-28 01:27:04,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 345 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:04,852 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 277 flow [2024-06-28 01:27:04,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-28 01:27:04,854 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2024-06-28 01:27:04,854 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 277 flow [2024-06-28 01:27:04,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:04,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:04,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:04,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:27:04,855 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:04,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:04,855 INFO L85 PathProgramCache]: Analyzing trace with hash 932038208, now seen corresponding path program 1 times [2024-06-28 01:27:04,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:04,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543754098] [2024-06-28 01:27:04,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:04,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:05,416 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 01:27:05,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:05,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543754098] [2024-06-28 01:27:05,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543754098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:05,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:05,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:27:05,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467914268] [2024-06-28 01:27:05,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:05,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:27:05,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:05,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:27:05,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:27:05,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:05,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 277 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:05,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:05,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:05,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:06,271 INFO L124 PetriNetUnfolderBase]: 3711/5478 cut-off events. [2024-06-28 01:27:06,272 INFO L125 PetriNetUnfolderBase]: For 9049/9049 co-relation queries the response was YES. [2024-06-28 01:27:06,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16334 conditions, 5478 events. 3711/5478 cut-off events. For 9049/9049 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 30299 event pairs, 919 based on Foata normal form. 8/5482 useless extension candidates. Maximal degree in co-relation 16313. Up to 5068 conditions per place. [2024-06-28 01:27:06,300 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 68 selfloop transitions, 19 changer transitions 4/101 dead transitions. [2024-06-28 01:27:06,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 589 flow [2024-06-28 01:27:06,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:27:06,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:27:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-28 01:27:06,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-06-28 01:27:06,302 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 277 flow. Second operand 6 states and 162 transitions. [2024-06-28 01:27:06,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 589 flow [2024-06-28 01:27:06,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 101 transitions, 571 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:27:06,308 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 331 flow [2024-06-28 01:27:06,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-06-28 01:27:06,309 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-06-28 01:27:06,310 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 331 flow [2024-06-28 01:27:06,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:06,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:06,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:06,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:27:06,310 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:06,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:06,311 INFO L85 PathProgramCache]: Analyzing trace with hash 938377088, now seen corresponding path program 2 times [2024-06-28 01:27:06,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:06,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908105298] [2024-06-28 01:27:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:06,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:06,958 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 01:27:06,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:06,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908105298] [2024-06-28 01:27:06,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908105298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:06,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:06,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:27:06,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077478059] [2024-06-28 01:27:06,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:06,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:27:06,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:06,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:27:06,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:27:07,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:07,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 331 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:07,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:07,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:07,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:07,623 INFO L124 PetriNetUnfolderBase]: 3214/4748 cut-off events. [2024-06-28 01:27:07,623 INFO L125 PetriNetUnfolderBase]: For 9010/9010 co-relation queries the response was YES. [2024-06-28 01:27:07,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14513 conditions, 4748 events. 3214/4748 cut-off events. For 9010/9010 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 25716 event pairs, 845 based on Foata normal form. 4/4746 useless extension candidates. Maximal degree in co-relation 14490. Up to 4395 conditions per place. [2024-06-28 01:27:07,647 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 62 selfloop transitions, 20 changer transitions 0/92 dead transitions. [2024-06-28 01:27:07,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 563 flow [2024-06-28 01:27:07,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:27:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:27:07,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2024-06-28 01:27:07,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-06-28 01:27:07,650 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 331 flow. Second operand 6 states and 154 transitions. [2024-06-28 01:27:07,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 563 flow [2024-06-28 01:27:07,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 92 transitions, 534 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:07,659 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 350 flow [2024-06-28 01:27:07,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=350, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2024-06-28 01:27:07,661 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2024-06-28 01:27:07,661 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 350 flow [2024-06-28 01:27:07,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:07,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:07,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:07,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:27:07,662 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:07,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:07,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1251890438, now seen corresponding path program 1 times [2024-06-28 01:27:07,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:07,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586614111] [2024-06-28 01:27:07,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:07,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:08,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:08,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586614111] [2024-06-28 01:27:08,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586614111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:08,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:08,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:08,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888875538] [2024-06-28 01:27:08,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:08,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:08,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:08,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:08,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:08,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:27:08,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 350 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:08,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:08,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:27:08,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:09,329 INFO L124 PetriNetUnfolderBase]: 2776/4288 cut-off events. [2024-06-28 01:27:09,330 INFO L125 PetriNetUnfolderBase]: For 8640/8640 co-relation queries the response was YES. [2024-06-28 01:27:09,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13088 conditions, 4288 events. 2776/4288 cut-off events. For 8640/8640 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 24296 event pairs, 742 based on Foata normal form. 4/4278 useless extension candidates. Maximal degree in co-relation 13064. Up to 3962 conditions per place. [2024-06-28 01:27:09,352 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 79 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2024-06-28 01:27:09,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 103 transitions, 653 flow [2024-06-28 01:27:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:09,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:09,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:27:09,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-28 01:27:09,353 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 350 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:27:09,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 103 transitions, 653 flow [2024-06-28 01:27:09,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 103 transitions, 583 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:27:09,362 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 360 flow [2024-06-28 01:27:09,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2024-06-28 01:27:09,362 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2024-06-28 01:27:09,362 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 360 flow [2024-06-28 01:27:09,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:09,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:09,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:09,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:27:09,363 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:09,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1007871719, now seen corresponding path program 1 times [2024-06-28 01:27:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:09,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840384680] [2024-06-28 01:27:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:09,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:09,958 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 01:27:09,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:09,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840384680] [2024-06-28 01:27:09,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840384680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:09,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:09,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:27:09,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878336180] [2024-06-28 01:27:09,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:09,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:27:09,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:09,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:27:09,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:27:10,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:27:10,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 360 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:10,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:10,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:27:10,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:10,464 INFO L124 PetriNetUnfolderBase]: 2778/4623 cut-off events. [2024-06-28 01:27:10,465 INFO L125 PetriNetUnfolderBase]: For 10380/10380 co-relation queries the response was YES. [2024-06-28 01:27:10,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13876 conditions, 4623 events. 2778/4623 cut-off events. For 10380/10380 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 29146 event pairs, 1095 based on Foata normal form. 1/4533 useless extension candidates. Maximal degree in co-relation 13850. Up to 4026 conditions per place. [2024-06-28 01:27:10,492 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 68 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2024-06-28 01:27:10,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 88 transitions, 595 flow [2024-06-28 01:27:10,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:27:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:27:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-28 01:27:10,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-28 01:27:10,494 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 360 flow. Second operand 5 states and 121 transitions. [2024-06-28 01:27:10,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 88 transitions, 595 flow [2024-06-28 01:27:10,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 88 transitions, 556 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:10,502 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 413 flow [2024-06-28 01:27:10,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=413, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-06-28 01:27:10,502 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2024-06-28 01:27:10,502 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 413 flow [2024-06-28 01:27:10,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:10,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:10,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:10,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:27:10,503 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:10,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:10,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1179250242, now seen corresponding path program 1 times [2024-06-28 01:27:10,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:10,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146923654] [2024-06-28 01:27:10,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:10,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:11,381 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 01:27:11,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:11,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146923654] [2024-06-28 01:27:11,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146923654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:11,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:11,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:27:11,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413861218] [2024-06-28 01:27:11,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:11,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:27:11,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:11,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:27:11,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:27:11,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:27:11,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 413 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:11,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:11,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:27:11,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:11,931 INFO L124 PetriNetUnfolderBase]: 2782/4577 cut-off events. [2024-06-28 01:27:11,931 INFO L125 PetriNetUnfolderBase]: For 12495/12495 co-relation queries the response was YES. [2024-06-28 01:27:11,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14562 conditions, 4577 events. 2782/4577 cut-off events. For 12495/12495 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 28403 event pairs, 1091 based on Foata normal form. 2/4502 useless extension candidates. Maximal degree in co-relation 14534. Up to 4010 conditions per place. [2024-06-28 01:27:11,953 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 74 selfloop transitions, 12 changer transitions 0/97 dead transitions. [2024-06-28 01:27:11,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 657 flow [2024-06-28 01:27:11,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:27:11,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:27:11,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-28 01:27:11,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:27:11,955 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 413 flow. Second operand 6 states and 144 transitions. [2024-06-28 01:27:11,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 657 flow [2024-06-28 01:27:11,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 634 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 01:27:11,963 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 450 flow [2024-06-28 01:27:11,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=450, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-06-28 01:27:11,963 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2024-06-28 01:27:11,963 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 450 flow [2024-06-28 01:27:11,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:11,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:11,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:11,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:27:11,964 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:11,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:11,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1662698771, now seen corresponding path program 1 times [2024-06-28 01:27:11,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:11,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737570661] [2024-06-28 01:27:11,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:11,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:12,659 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 01:27:12,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:12,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737570661] [2024-06-28 01:27:12,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737570661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:12,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:12,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:12,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996804820] [2024-06-28 01:27:12,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:12,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:12,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:12,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:12,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:12,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:12,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 450 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:12,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:12,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:12,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:13,694 INFO L124 PetriNetUnfolderBase]: 3502/5625 cut-off events. [2024-06-28 01:27:13,694 INFO L125 PetriNetUnfolderBase]: For 20268/20268 co-relation queries the response was YES. [2024-06-28 01:27:13,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18976 conditions, 5625 events. 3502/5625 cut-off events. For 20268/20268 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 33984 event pairs, 644 based on Foata normal form. 16/5502 useless extension candidates. Maximal degree in co-relation 18946. Up to 4060 conditions per place. [2024-06-28 01:27:13,724 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 96 selfloop transitions, 24 changer transitions 0/130 dead transitions. [2024-06-28 01:27:13,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 130 transitions, 888 flow [2024-06-28 01:27:13,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:13,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-28 01:27:13,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683890577507599 [2024-06-28 01:27:13,742 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 450 flow. Second operand 7 states and 187 transitions. [2024-06-28 01:27:13,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 130 transitions, 888 flow [2024-06-28 01:27:13,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 130 transitions, 850 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:13,758 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 492 flow [2024-06-28 01:27:13,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=492, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-06-28 01:27:13,759 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-06-28 01:27:13,759 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 492 flow [2024-06-28 01:27:13,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:13,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:13,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:13,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:27:13,760 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:13,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1279158435, now seen corresponding path program 2 times [2024-06-28 01:27:13,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:13,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145540947] [2024-06-28 01:27:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:13,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:14,406 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 01:27:14,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:14,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145540947] [2024-06-28 01:27:14,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145540947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:14,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:14,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:14,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800372580] [2024-06-28 01:27:14,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:14,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:14,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:14,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:14,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:14,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:14,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 492 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:14,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:14,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:14,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:15,253 INFO L124 PetriNetUnfolderBase]: 3616/5881 cut-off events. [2024-06-28 01:27:15,253 INFO L125 PetriNetUnfolderBase]: For 23741/23741 co-relation queries the response was YES. [2024-06-28 01:27:15,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20140 conditions, 5881 events. 3616/5881 cut-off events. For 23741/23741 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 36390 event pairs, 1023 based on Foata normal form. 24/5742 useless extension candidates. Maximal degree in co-relation 20109. Up to 4763 conditions per place. [2024-06-28 01:27:15,284 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 91 selfloop transitions, 25 changer transitions 0/126 dead transitions. [2024-06-28 01:27:15,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 126 transitions, 864 flow [2024-06-28 01:27:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:15,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:27:15,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592705167173252 [2024-06-28 01:27:15,286 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 492 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:27:15,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 126 transitions, 864 flow [2024-06-28 01:27:15,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 126 transitions, 831 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:15,304 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 541 flow [2024-06-28 01:27:15,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=541, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2024-06-28 01:27:15,304 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2024-06-28 01:27:15,304 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 541 flow [2024-06-28 01:27:15,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:15,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:15,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:15,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:27:15,305 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:15,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:15,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2086477688, now seen corresponding path program 1 times [2024-06-28 01:27:15,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:15,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68592630] [2024-06-28 01:27:15,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:15,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:16,042 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 01:27:16,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:16,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68592630] [2024-06-28 01:27:16,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68592630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:16,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:16,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:16,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610857082] [2024-06-28 01:27:16,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:16,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:16,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:16,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:16,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:16,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:16,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 541 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 01:27:16,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:16,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:16,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:16,952 INFO L124 PetriNetUnfolderBase]: 3652/5912 cut-off events. [2024-06-28 01:27:16,953 INFO L125 PetriNetUnfolderBase]: For 25851/25853 co-relation queries the response was YES. [2024-06-28 01:27:16,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21037 conditions, 5912 events. 3652/5912 cut-off events. For 25851/25853 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 37132 event pairs, 1426 based on Foata normal form. 3/5798 useless extension candidates. Maximal degree in co-relation 21004. Up to 5290 conditions per place. [2024-06-28 01:27:16,978 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 86 selfloop transitions, 19 changer transitions 0/115 dead transitions. [2024-06-28 01:27:16,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 904 flow [2024-06-28 01:27:16,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:16,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:16,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:27:16,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47720364741641336 [2024-06-28 01:27:16,980 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 541 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:27:16,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 904 flow [2024-06-28 01:27:17,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 115 transitions, 836 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:27:17,003 INFO L231 Difference]: Finished difference. Result has 90 places, 95 transitions, 657 flow [2024-06-28 01:27:17,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=657, PETRI_PLACES=90, PETRI_TRANSITIONS=95} [2024-06-28 01:27:17,003 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2024-06-28 01:27:17,004 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 95 transitions, 657 flow [2024-06-28 01:27:17,004 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 01:27:17,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:17,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:17,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:27:17,004 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:17,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:17,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1126766630, now seen corresponding path program 2 times [2024-06-28 01:27:17,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:17,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666340906] [2024-06-28 01:27:17,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:17,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:17,713 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 01:27:17,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:17,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666340906] [2024-06-28 01:27:17,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666340906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:17,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:17,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:17,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985168543] [2024-06-28 01:27:17,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:17,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:17,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:17,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:17,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:17,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:17,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 95 transitions, 657 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 01:27:17,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:17,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:17,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:18,479 INFO L124 PetriNetUnfolderBase]: 3700/6164 cut-off events. [2024-06-28 01:27:18,479 INFO L125 PetriNetUnfolderBase]: For 29963/29963 co-relation queries the response was YES. [2024-06-28 01:27:18,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22361 conditions, 6164 events. 3700/6164 cut-off events. For 29963/29963 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 40063 event pairs, 1878 based on Foata normal form. 1/6007 useless extension candidates. Maximal degree in co-relation 22324. Up to 5342 conditions per place. [2024-06-28 01:27:18,512 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 95 selfloop transitions, 29 changer transitions 0/134 dead transitions. [2024-06-28 01:27:18,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 134 transitions, 1089 flow [2024-06-28 01:27:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:18,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:27:18,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-28 01:27:18,514 INFO L175 Difference]: Start difference. First operand has 90 places, 95 transitions, 657 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:27:18,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 134 transitions, 1089 flow [2024-06-28 01:27:18,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 134 transitions, 1043 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-28 01:27:18,540 INFO L231 Difference]: Finished difference. Result has 97 places, 108 transitions, 821 flow [2024-06-28 01:27:18,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=821, PETRI_PLACES=97, PETRI_TRANSITIONS=108} [2024-06-28 01:27:18,540 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2024-06-28 01:27:18,540 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 108 transitions, 821 flow [2024-06-28 01:27:18,541 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 01:27:18,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:18,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:18,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:27:18,541 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:18,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:18,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1411475593, now seen corresponding path program 1 times [2024-06-28 01:27:18,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:18,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694224401] [2024-06-28 01:27:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:18,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:19,551 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 01:27:19,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:19,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694224401] [2024-06-28 01:27:19,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694224401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:19,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:19,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:19,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444030028] [2024-06-28 01:27:19,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:19,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:19,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:19,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:19,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:19,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:19,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 108 transitions, 821 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:19,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:19,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:19,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:20,612 INFO L124 PetriNetUnfolderBase]: 3760/6077 cut-off events. [2024-06-28 01:27:20,613 INFO L125 PetriNetUnfolderBase]: For 34883/34883 co-relation queries the response was YES. [2024-06-28 01:27:20,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23779 conditions, 6077 events. 3760/6077 cut-off events. For 34883/34883 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 37791 event pairs, 1159 based on Foata normal form. 4/5932 useless extension candidates. Maximal degree in co-relation 23738. Up to 5134 conditions per place. [2024-06-28 01:27:20,659 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 113 selfloop transitions, 41 changer transitions 0/164 dead transitions. [2024-06-28 01:27:20,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 164 transitions, 1375 flow [2024-06-28 01:27:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:27:20,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-28 01:27:20,661 INFO L175 Difference]: Start difference. First operand has 97 places, 108 transitions, 821 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:27:20,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 164 transitions, 1375 flow [2024-06-28 01:27:20,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 164 transitions, 1324 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:20,701 INFO L231 Difference]: Finished difference. Result has 103 places, 119 transitions, 970 flow [2024-06-28 01:27:20,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=970, PETRI_PLACES=103, PETRI_TRANSITIONS=119} [2024-06-28 01:27:20,702 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2024-06-28 01:27:20,702 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 119 transitions, 970 flow [2024-06-28 01:27:20,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:20,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:20,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:20,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:27:20,703 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:20,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:20,704 INFO L85 PathProgramCache]: Analyzing trace with hash -475839847, now seen corresponding path program 2 times [2024-06-28 01:27:20,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:20,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77671265] [2024-06-28 01:27:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:20,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:21,701 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 01:27:21,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:21,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77671265] [2024-06-28 01:27:21,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77671265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:21,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:21,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:21,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985154966] [2024-06-28 01:27:21,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:21,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:21,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:21,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:21,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:21,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:21,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 119 transitions, 970 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:21,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:21,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:21,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:22,892 INFO L124 PetriNetUnfolderBase]: 3845/6190 cut-off events. [2024-06-28 01:27:22,893 INFO L125 PetriNetUnfolderBase]: For 39776/39776 co-relation queries the response was YES. [2024-06-28 01:27:22,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25182 conditions, 6190 events. 3845/6190 cut-off events. For 39776/39776 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 38479 event pairs, 964 based on Foata normal form. 4/6059 useless extension candidates. Maximal degree in co-relation 25139. Up to 4946 conditions per place. [2024-06-28 01:27:22,937 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 117 selfloop transitions, 48 changer transitions 0/175 dead transitions. [2024-06-28 01:27:22,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 175 transitions, 1594 flow [2024-06-28 01:27:22,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:22,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-06-28 01:27:22,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-06-28 01:27:22,939 INFO L175 Difference]: Start difference. First operand has 103 places, 119 transitions, 970 flow. Second operand 8 states and 208 transitions. [2024-06-28 01:27:22,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 175 transitions, 1594 flow [2024-06-28 01:27:22,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 175 transitions, 1520 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:22,994 INFO L231 Difference]: Finished difference. Result has 109 places, 124 transitions, 1090 flow [2024-06-28 01:27:22,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1090, PETRI_PLACES=109, PETRI_TRANSITIONS=124} [2024-06-28 01:27:22,995 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-06-28 01:27:22,995 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 124 transitions, 1090 flow [2024-06-28 01:27:22,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:22,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:22,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:22,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:27:22,996 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:22,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:22,996 INFO L85 PathProgramCache]: Analyzing trace with hash -712311877, now seen corresponding path program 3 times [2024-06-28 01:27:22,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:22,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346420386] [2024-06-28 01:27:22,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:22,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:23,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:23,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346420386] [2024-06-28 01:27:23,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346420386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:23,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:23,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:23,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569995407] [2024-06-28 01:27:23,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:23,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:23,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:23,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:23,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:23,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:23,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 124 transitions, 1090 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:23,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:23,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:23,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:25,016 INFO L124 PetriNetUnfolderBase]: 3837/6224 cut-off events. [2024-06-28 01:27:25,016 INFO L125 PetriNetUnfolderBase]: For 43876/43876 co-relation queries the response was YES. [2024-06-28 01:27:25,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25641 conditions, 6224 events. 3837/6224 cut-off events. For 43876/43876 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 39083 event pairs, 1187 based on Foata normal form. 4/6076 useless extension candidates. Maximal degree in co-relation 25596. Up to 5257 conditions per place. [2024-06-28 01:27:25,058 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 119 selfloop transitions, 41 changer transitions 0/170 dead transitions. [2024-06-28 01:27:25,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 170 transitions, 1575 flow [2024-06-28 01:27:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:25,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-28 01:27:25,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372340425531915 [2024-06-28 01:27:25,059 INFO L175 Difference]: Start difference. First operand has 109 places, 124 transitions, 1090 flow. Second operand 8 states and 202 transitions. [2024-06-28 01:27:25,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 170 transitions, 1575 flow [2024-06-28 01:27:25,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 170 transitions, 1450 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:27:25,107 INFO L231 Difference]: Finished difference. Result has 113 places, 125 transitions, 1073 flow [2024-06-28 01:27:25,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1073, PETRI_PLACES=113, PETRI_TRANSITIONS=125} [2024-06-28 01:27:25,108 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 60 predicate places. [2024-06-28 01:27:25,108 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 125 transitions, 1073 flow [2024-06-28 01:27:25,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:25,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:25,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:25,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:27:25,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:25,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:25,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1171923698, now seen corresponding path program 3 times [2024-06-28 01:27:25,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:25,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193949601] [2024-06-28 01:27:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:25,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:25,825 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 01:27:25,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:25,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193949601] [2024-06-28 01:27:25,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193949601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:25,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:25,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:27:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104884325] [2024-06-28 01:27:25,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:25,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:27:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:25,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:27:25,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:27:25,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:25,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 125 transitions, 1073 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 01:27:25,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:25,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:25,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:26,636 INFO L124 PetriNetUnfolderBase]: 3839/6443 cut-off events. [2024-06-28 01:27:26,636 INFO L125 PetriNetUnfolderBase]: For 45247/45247 co-relation queries the response was YES. [2024-06-28 01:27:26,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25668 conditions, 6443 events. 3839/6443 cut-off events. For 45247/45247 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 42560 event pairs, 1795 based on Foata normal form. 1/6277 useless extension candidates. Maximal degree in co-relation 25621. Up to 5526 conditions per place. [2024-06-28 01:27:26,678 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 101 selfloop transitions, 35 changer transitions 0/146 dead transitions. [2024-06-28 01:27:26,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 146 transitions, 1445 flow [2024-06-28 01:27:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:26,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 01:27:26,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47112462006079026 [2024-06-28 01:27:26,681 INFO L175 Difference]: Start difference. First operand has 113 places, 125 transitions, 1073 flow. Second operand 7 states and 155 transitions. [2024-06-28 01:27:26,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 146 transitions, 1445 flow [2024-06-28 01:27:26,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 146 transitions, 1354 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:27:26,729 INFO L231 Difference]: Finished difference. Result has 115 places, 128 transitions, 1104 flow [2024-06-28 01:27:26,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1104, PETRI_PLACES=115, PETRI_TRANSITIONS=128} [2024-06-28 01:27:26,730 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 62 predicate places. [2024-06-28 01:27:26,730 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 128 transitions, 1104 flow [2024-06-28 01:27:26,730 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 01:27:26,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:26,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:26,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:27:26,731 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:26,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash 984372062, now seen corresponding path program 1 times [2024-06-28 01:27:26,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:26,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727946904] [2024-06-28 01:27:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:26,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:27,388 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 01:27:27,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:27,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727946904] [2024-06-28 01:27:27,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727946904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:27,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:27,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:27:27,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420229429] [2024-06-28 01:27:27,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:27,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:27:27,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:27,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:27:27,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:27:27,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:27:27,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 128 transitions, 1104 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:27,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:27,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:27:27,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:28,250 INFO L124 PetriNetUnfolderBase]: 3441/5935 cut-off events. [2024-06-28 01:27:28,250 INFO L125 PetriNetUnfolderBase]: For 43916/43916 co-relation queries the response was YES. [2024-06-28 01:27:28,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23894 conditions, 5935 events. 3441/5935 cut-off events. For 43916/43916 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 40078 event pairs, 1780 based on Foata normal form. 2/5785 useless extension candidates. Maximal degree in co-relation 23846. Up to 5008 conditions per place. [2024-06-28 01:27:28,298 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 130 selfloop transitions, 14 changer transitions 0/155 dead transitions. [2024-06-28 01:27:28,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 155 transitions, 1518 flow [2024-06-28 01:27:28,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:27:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:27:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 01:27:28,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-28 01:27:28,300 INFO L175 Difference]: Start difference. First operand has 115 places, 128 transitions, 1104 flow. Second operand 6 states and 146 transitions. [2024-06-28 01:27:28,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 155 transitions, 1518 flow [2024-06-28 01:27:28,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 155 transitions, 1418 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:27:28,350 INFO L231 Difference]: Finished difference. Result has 117 places, 135 transitions, 1119 flow [2024-06-28 01:27:28,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1119, PETRI_PLACES=117, PETRI_TRANSITIONS=135} [2024-06-28 01:27:28,351 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-06-28 01:27:28,351 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 135 transitions, 1119 flow [2024-06-28 01:27:28,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:28,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:28,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:28,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:27:28,352 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:28,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:28,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2097941240, now seen corresponding path program 2 times [2024-06-28 01:27:28,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:28,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929178702] [2024-06-28 01:27:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:28,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:29,049 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 01:27:29,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:29,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929178702] [2024-06-28 01:27:29,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929178702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:29,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:29,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:27:29,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202087657] [2024-06-28 01:27:29,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:29,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:27:29,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:29,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:27:29,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:27:29,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:27:29,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 135 transitions, 1119 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:29,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:29,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:27:29,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:29,805 INFO L124 PetriNetUnfolderBase]: 3460/5968 cut-off events. [2024-06-28 01:27:29,805 INFO L125 PetriNetUnfolderBase]: For 48284/48288 co-relation queries the response was YES. [2024-06-28 01:27:29,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24804 conditions, 5968 events. 3460/5968 cut-off events. For 48284/48288 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 40413 event pairs, 1776 based on Foata normal form. 6/5821 useless extension candidates. Maximal degree in co-relation 24754. Up to 5003 conditions per place. [2024-06-28 01:27:29,847 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 128 selfloop transitions, 19 changer transitions 0/158 dead transitions. [2024-06-28 01:27:29,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 158 transitions, 1517 flow [2024-06-28 01:27:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:27:29,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:27:29,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-28 01:27:29,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-28 01:27:29,848 INFO L175 Difference]: Start difference. First operand has 117 places, 135 transitions, 1119 flow. Second operand 6 states and 147 transitions. [2024-06-28 01:27:29,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 158 transitions, 1517 flow [2024-06-28 01:27:29,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 158 transitions, 1472 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:29,896 INFO L231 Difference]: Finished difference. Result has 120 places, 138 transitions, 1156 flow [2024-06-28 01:27:29,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1156, PETRI_PLACES=120, PETRI_TRANSITIONS=138} [2024-06-28 01:27:29,897 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 67 predicate places. [2024-06-28 01:27:29,897 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 138 transitions, 1156 flow [2024-06-28 01:27:29,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:29,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:29,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:29,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:27:29,898 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:29,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:29,898 INFO L85 PathProgramCache]: Analyzing trace with hash -936703428, now seen corresponding path program 1 times [2024-06-28 01:27:29,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:29,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832904] [2024-06-28 01:27:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:29,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:30,508 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 01:27:30,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:30,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832904] [2024-06-28 01:27:30,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:30,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:30,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:30,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143347571] [2024-06-28 01:27:30,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:30,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:30,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:30,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:30,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:30,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:30,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 138 transitions, 1156 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:30,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:30,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:30,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:31,485 INFO L124 PetriNetUnfolderBase]: 3976/6492 cut-off events. [2024-06-28 01:27:31,485 INFO L125 PetriNetUnfolderBase]: For 60958/60966 co-relation queries the response was YES. [2024-06-28 01:27:31,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28587 conditions, 6492 events. 3976/6492 cut-off events. For 60958/60966 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 41861 event pairs, 1551 based on Foata normal form. 11/6370 useless extension candidates. Maximal degree in co-relation 28536. Up to 5597 conditions per place. [2024-06-28 01:27:31,534 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 143 selfloop transitions, 45 changer transitions 0/198 dead transitions. [2024-06-28 01:27:31,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 198 transitions, 1850 flow [2024-06-28 01:27:31,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:31,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:31,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-06-28 01:27:31,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:27:31,536 INFO L175 Difference]: Start difference. First operand has 120 places, 138 transitions, 1156 flow. Second operand 8 states and 200 transitions. [2024-06-28 01:27:31,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 198 transitions, 1850 flow [2024-06-28 01:27:31,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 198 transitions, 1790 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:31,597 INFO L231 Difference]: Finished difference. Result has 127 places, 164 transitions, 1498 flow [2024-06-28 01:27:31,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1498, PETRI_PLACES=127, PETRI_TRANSITIONS=164} [2024-06-28 01:27:31,598 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 74 predicate places. [2024-06-28 01:27:31,598 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 164 transitions, 1498 flow [2024-06-28 01:27:31,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:31,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:31,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:31,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:27:31,599 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:31,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:31,599 INFO L85 PathProgramCache]: Analyzing trace with hash -399702455, now seen corresponding path program 1 times [2024-06-28 01:27:31,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:31,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10922572] [2024-06-28 01:27:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:31,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:32,734 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 01:27:32,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:32,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10922572] [2024-06-28 01:27:32,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10922572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:32,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:32,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:32,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626019130] [2024-06-28 01:27:32,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:32,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:32,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:32,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:32,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 164 transitions, 1498 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:32,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:32,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:32,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:34,018 INFO L124 PetriNetUnfolderBase]: 4697/7738 cut-off events. [2024-06-28 01:27:34,018 INFO L125 PetriNetUnfolderBase]: For 76736/76736 co-relation queries the response was YES. [2024-06-28 01:27:34,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36491 conditions, 7738 events. 4697/7738 cut-off events. For 76736/76736 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 51486 event pairs, 1484 based on Foata normal form. 12/7582 useless extension candidates. Maximal degree in co-relation 36436. Up to 5775 conditions per place. [2024-06-28 01:27:34,099 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 185 selfloop transitions, 86 changer transitions 0/281 dead transitions. [2024-06-28 01:27:34,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 281 transitions, 2878 flow [2024-06-28 01:27:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:27:34,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:27:34,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 235 transitions. [2024-06-28 01:27:34,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-28 01:27:34,101 INFO L175 Difference]: Start difference. First operand has 127 places, 164 transitions, 1498 flow. Second operand 9 states and 235 transitions. [2024-06-28 01:27:34,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 281 transitions, 2878 flow [2024-06-28 01:27:34,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 281 transitions, 2741 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-06-28 01:27:34,196 INFO L231 Difference]: Finished difference. Result has 137 places, 207 transitions, 2122 flow [2024-06-28 01:27:34,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2122, PETRI_PLACES=137, PETRI_TRANSITIONS=207} [2024-06-28 01:27:34,197 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2024-06-28 01:27:34,197 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 207 transitions, 2122 flow [2024-06-28 01:27:34,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:34,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:34,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:34,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:27:34,197 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:34,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:34,198 INFO L85 PathProgramCache]: Analyzing trace with hash 200684850, now seen corresponding path program 2 times [2024-06-28 01:27:34,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:34,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401690801] [2024-06-28 01:27:34,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:34,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:34,815 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 01:27:34,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:34,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401690801] [2024-06-28 01:27:34,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401690801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:34,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:34,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:34,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234534087] [2024-06-28 01:27:34,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:34,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:34,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:34,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:34,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:34,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:34,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 207 transitions, 2122 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:34,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:34,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:34,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:35,977 INFO L124 PetriNetUnfolderBase]: 4827/7986 cut-off events. [2024-06-28 01:27:35,977 INFO L125 PetriNetUnfolderBase]: For 82995/83003 co-relation queries the response was YES. [2024-06-28 01:27:36,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39091 conditions, 7986 events. 4827/7986 cut-off events. For 82995/83003 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 53809 event pairs, 1636 based on Foata normal form. 11/7817 useless extension candidates. Maximal degree in co-relation 39031. Up to 6749 conditions per place. [2024-06-28 01:27:36,045 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 185 selfloop transitions, 66 changer transitions 0/261 dead transitions. [2024-06-28 01:27:36,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 261 transitions, 2959 flow [2024-06-28 01:27:36,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:27:36,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 01:27:36,047 INFO L175 Difference]: Start difference. First operand has 137 places, 207 transitions, 2122 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:27:36,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 261 transitions, 2959 flow [2024-06-28 01:27:36,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 261 transitions, 2865 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:36,153 INFO L231 Difference]: Finished difference. Result has 145 places, 227 transitions, 2466 flow [2024-06-28 01:27:36,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2032, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2466, PETRI_PLACES=145, PETRI_TRANSITIONS=227} [2024-06-28 01:27:36,159 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 92 predicate places. [2024-06-28 01:27:36,159 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 227 transitions, 2466 flow [2024-06-28 01:27:36,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:36,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:36,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:36,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:27:36,160 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:36,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:36,160 INFO L85 PathProgramCache]: Analyzing trace with hash 791740243, now seen corresponding path program 1 times [2024-06-28 01:27:36,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:36,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886180258] [2024-06-28 01:27:36,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:36,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:37,011 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 01:27:37,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:37,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886180258] [2024-06-28 01:27:37,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886180258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:37,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:37,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:37,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906995624] [2024-06-28 01:27:37,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:37,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:37,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:37,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:37,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:37,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:37,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 227 transitions, 2466 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:37,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:37,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:37,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:38,111 INFO L124 PetriNetUnfolderBase]: 4844/8058 cut-off events. [2024-06-28 01:27:38,112 INFO L125 PetriNetUnfolderBase]: For 89747/89751 co-relation queries the response was YES. [2024-06-28 01:27:38,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40218 conditions, 8058 events. 4844/8058 cut-off events. For 89747/89751 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 54776 event pairs, 1951 based on Foata normal form. 5/7875 useless extension candidates. Maximal degree in co-relation 40154. Up to 6990 conditions per place. [2024-06-28 01:27:38,203 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 219 selfloop transitions, 32 changer transitions 0/261 dead transitions. [2024-06-28 01:27:38,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 261 transitions, 3132 flow [2024-06-28 01:27:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:38,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:27:38,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:27:38,205 INFO L175 Difference]: Start difference. First operand has 145 places, 227 transitions, 2466 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:27:38,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 261 transitions, 3132 flow [2024-06-28 01:27:38,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 261 transitions, 3029 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:38,325 INFO L231 Difference]: Finished difference. Result has 150 places, 230 transitions, 2482 flow [2024-06-28 01:27:38,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2482, PETRI_PLACES=150, PETRI_TRANSITIONS=230} [2024-06-28 01:27:38,326 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 97 predicate places. [2024-06-28 01:27:38,326 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 230 transitions, 2482 flow [2024-06-28 01:27:38,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:38,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:38,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:38,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:27:38,327 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:38,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:38,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1423866836, now seen corresponding path program 3 times [2024-06-28 01:27:38,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:38,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101822259] [2024-06-28 01:27:38,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:38,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:39,043 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 01:27:39,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:39,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101822259] [2024-06-28 01:27:39,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101822259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:39,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:39,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:39,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152143234] [2024-06-28 01:27:39,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:39,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:39,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:39,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:39,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:39,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:39,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 230 transitions, 2482 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:39,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:39,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:39,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:40,378 INFO L124 PetriNetUnfolderBase]: 4979/8229 cut-off events. [2024-06-28 01:27:40,378 INFO L125 PetriNetUnfolderBase]: For 98841/98845 co-relation queries the response was YES. [2024-06-28 01:27:40,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41881 conditions, 8229 events. 4979/8229 cut-off events. For 98841/98845 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 55646 event pairs, 1636 based on Foata normal form. 7/8049 useless extension candidates. Maximal degree in co-relation 41816. Up to 6774 conditions per place. [2024-06-28 01:27:40,459 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 189 selfloop transitions, 73 changer transitions 0/272 dead transitions. [2024-06-28 01:27:40,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 272 transitions, 3314 flow [2024-06-28 01:27:40,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:40,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-28 01:27:40,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-28 01:27:40,460 INFO L175 Difference]: Start difference. First operand has 150 places, 230 transitions, 2482 flow. Second operand 8 states and 199 transitions. [2024-06-28 01:27:40,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 272 transitions, 3314 flow [2024-06-28 01:27:40,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 272 transitions, 3219 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:27:40,577 INFO L231 Difference]: Finished difference. Result has 153 places, 238 transitions, 2697 flow [2024-06-28 01:27:40,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2697, PETRI_PLACES=153, PETRI_TRANSITIONS=238} [2024-06-28 01:27:40,578 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2024-06-28 01:27:40,578 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 238 transitions, 2697 flow [2024-06-28 01:27:40,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:40,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:40,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:40,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:27:40,579 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:40,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:40,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1714420267, now seen corresponding path program 2 times [2024-06-28 01:27:40,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:40,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698202950] [2024-06-28 01:27:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:40,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:41,491 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 01:27:41,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:41,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698202950] [2024-06-28 01:27:41,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698202950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:41,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:41,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:41,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625435755] [2024-06-28 01:27:41,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:41,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:41,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:41,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:41,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:41,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:41,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 238 transitions, 2697 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:41,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:41,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:41,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:42,956 INFO L124 PetriNetUnfolderBase]: 5244/8606 cut-off events. [2024-06-28 01:27:42,956 INFO L125 PetriNetUnfolderBase]: For 116605/116605 co-relation queries the response was YES. [2024-06-28 01:27:43,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45880 conditions, 8606 events. 5244/8606 cut-off events. For 116605/116605 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 58284 event pairs, 1376 based on Foata normal form. 12/8447 useless extension candidates. Maximal degree in co-relation 45813. Up to 5929 conditions per place. [2024-06-28 01:27:43,052 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 191 selfloop transitions, 99 changer transitions 0/300 dead transitions. [2024-06-28 01:27:43,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 300 transitions, 3645 flow [2024-06-28 01:27:43,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:27:43,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:27:43,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 01:27:43,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.550531914893617 [2024-06-28 01:27:43,054 INFO L175 Difference]: Start difference. First operand has 153 places, 238 transitions, 2697 flow. Second operand 8 states and 207 transitions. [2024-06-28 01:27:43,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 300 transitions, 3645 flow [2024-06-28 01:27:43,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 300 transitions, 3519 flow, removed 31 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:43,255 INFO L231 Difference]: Finished difference. Result has 159 places, 247 transitions, 2975 flow [2024-06-28 01:27:43,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2975, PETRI_PLACES=159, PETRI_TRANSITIONS=247} [2024-06-28 01:27:43,256 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 106 predicate places. [2024-06-28 01:27:43,256 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 247 transitions, 2975 flow [2024-06-28 01:27:43,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:43,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:43,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:43,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:27:43,260 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:43,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:43,261 INFO L85 PathProgramCache]: Analyzing trace with hash 2432056, now seen corresponding path program 4 times [2024-06-28 01:27:43,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:43,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802248198] [2024-06-28 01:27:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:43,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:43,862 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 01:27:43,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:43,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802248198] [2024-06-28 01:27:43,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802248198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:43,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:43,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:43,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182048677] [2024-06-28 01:27:43,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:43,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:43,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:43,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:43,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:43,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:43,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 247 transitions, 2975 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:43,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:43,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:43,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:45,163 INFO L124 PetriNetUnfolderBase]: 5295/8832 cut-off events. [2024-06-28 01:27:45,163 INFO L125 PetriNetUnfolderBase]: For 125407/125415 co-relation queries the response was YES. [2024-06-28 01:27:45,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48452 conditions, 8832 events. 5295/8832 cut-off events. For 125407/125415 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 61340 event pairs, 1775 based on Foata normal form. 11/8639 useless extension candidates. Maximal degree in co-relation 48381. Up to 7373 conditions per place. [2024-06-28 01:27:45,268 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 199 selfloop transitions, 72 changer transitions 0/281 dead transitions. [2024-06-28 01:27:45,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 281 transitions, 3717 flow [2024-06-28 01:27:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:45,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:27:45,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:27:45,270 INFO L175 Difference]: Start difference. First operand has 159 places, 247 transitions, 2975 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:27:45,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 281 transitions, 3717 flow [2024-06-28 01:27:45,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 281 transitions, 3611 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:27:45,573 INFO L231 Difference]: Finished difference. Result has 162 places, 251 transitions, 3115 flow [2024-06-28 01:27:45,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2869, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3115, PETRI_PLACES=162, PETRI_TRANSITIONS=251} [2024-06-28 01:27:45,574 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 109 predicate places. [2024-06-28 01:27:45,574 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 251 transitions, 3115 flow [2024-06-28 01:27:45,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:45,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:45,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:45,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:27:45,575 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:45,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:45,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2731516, now seen corresponding path program 5 times [2024-06-28 01:27:45,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:45,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727460228] [2024-06-28 01:27:45,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:45,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:46,228 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 01:27:46,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:46,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727460228] [2024-06-28 01:27:46,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727460228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:46,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:46,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:46,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306932915] [2024-06-28 01:27:46,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:46,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:46,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:46,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:46,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:46,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:46,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 251 transitions, 3115 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:46,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:46,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:46,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:47,624 INFO L124 PetriNetUnfolderBase]: 5430/9061 cut-off events. [2024-06-28 01:27:47,624 INFO L125 PetriNetUnfolderBase]: For 136385/136389 co-relation queries the response was YES. [2024-06-28 01:27:47,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50811 conditions, 9061 events. 5430/9061 cut-off events. For 136385/136389 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 63268 event pairs, 1566 based on Foata normal form. 7/8855 useless extension candidates. Maximal degree in co-relation 50740. Up to 7285 conditions per place. [2024-06-28 01:27:47,701 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 200 selfloop transitions, 78 changer transitions 0/288 dead transitions. [2024-06-28 01:27:47,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 288 transitions, 4003 flow [2024-06-28 01:27:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 01:27:47,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258358662613982 [2024-06-28 01:27:47,703 INFO L175 Difference]: Start difference. First operand has 162 places, 251 transitions, 3115 flow. Second operand 7 states and 173 transitions. [2024-06-28 01:27:47,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 288 transitions, 4003 flow [2024-06-28 01:27:47,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 288 transitions, 3837 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-28 01:27:47,867 INFO L231 Difference]: Finished difference. Result has 165 places, 259 transitions, 3319 flow [2024-06-28 01:27:47,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2949, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3319, PETRI_PLACES=165, PETRI_TRANSITIONS=259} [2024-06-28 01:27:47,868 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 112 predicate places. [2024-06-28 01:27:47,868 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 259 transitions, 3319 flow [2024-06-28 01:27:47,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:47,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:47,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:47,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:27:47,869 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:47,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:47,869 INFO L85 PathProgramCache]: Analyzing trace with hash 598599453, now seen corresponding path program 2 times [2024-06-28 01:27:47,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:47,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587988665] [2024-06-28 01:27:47,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:47,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:48,703 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 01:27:48,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:48,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587988665] [2024-06-28 01:27:48,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587988665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:48,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:48,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:48,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179084886] [2024-06-28 01:27:48,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:48,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:48,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:48,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:48,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:48,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:48,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 259 transitions, 3319 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:48,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:48,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:48,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:50,147 INFO L124 PetriNetUnfolderBase]: 5447/9135 cut-off events. [2024-06-28 01:27:50,147 INFO L125 PetriNetUnfolderBase]: For 152654/152658 co-relation queries the response was YES. [2024-06-28 01:27:50,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52957 conditions, 9135 events. 5447/9135 cut-off events. For 152654/152658 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 64106 event pairs, 2018 based on Foata normal form. 5/8920 useless extension candidates. Maximal degree in co-relation 52884. Up to 7835 conditions per place. [2024-06-28 01:27:50,252 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 243 selfloop transitions, 35 changer transitions 0/288 dead transitions. [2024-06-28 01:27:50,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 288 transitions, 4041 flow [2024-06-28 01:27:50,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 01:27:50,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-06-28 01:27:50,253 INFO L175 Difference]: Start difference. First operand has 165 places, 259 transitions, 3319 flow. Second operand 7 states and 164 transitions. [2024-06-28 01:27:50,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 288 transitions, 4041 flow [2024-06-28 01:27:50,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 288 transitions, 3907 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 01:27:50,469 INFO L231 Difference]: Finished difference. Result has 169 places, 262 transitions, 3330 flow [2024-06-28 01:27:50,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3189, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3330, PETRI_PLACES=169, PETRI_TRANSITIONS=262} [2024-06-28 01:27:50,470 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 116 predicate places. [2024-06-28 01:27:50,470 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 262 transitions, 3330 flow [2024-06-28 01:27:50,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:50,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:50,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:50,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:27:50,471 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:50,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:50,471 INFO L85 PathProgramCache]: Analyzing trace with hash 549570855, now seen corresponding path program 3 times [2024-06-28 01:27:50,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:50,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880269115] [2024-06-28 01:27:50,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:50,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:27:51,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:51,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880269115] [2024-06-28 01:27:51,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880269115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:51,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:51,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:51,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449524266] [2024-06-28 01:27:51,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:51,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:51,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:51,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:51,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:51,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:51,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 262 transitions, 3330 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:51,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:51,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:51,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:52,942 INFO L124 PetriNetUnfolderBase]: 5427/9045 cut-off events. [2024-06-28 01:27:52,943 INFO L125 PetriNetUnfolderBase]: For 142834/142834 co-relation queries the response was YES. [2024-06-28 01:27:53,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51565 conditions, 9045 events. 5427/9045 cut-off events. For 142834/142834 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 62375 event pairs, 986 based on Foata normal form. 12/8855 useless extension candidates. Maximal degree in co-relation 51490. Up to 5332 conditions per place. [2024-06-28 01:27:53,048 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 205 selfloop transitions, 91 changer transitions 0/306 dead transitions. [2024-06-28 01:27:53,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 306 transitions, 4136 flow [2024-06-28 01:27:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:53,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:53,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-06-28 01:27:53,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592705167173252 [2024-06-28 01:27:53,049 INFO L175 Difference]: Start difference. First operand has 169 places, 262 transitions, 3330 flow. Second operand 7 states and 184 transitions. [2024-06-28 01:27:53,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 306 transitions, 4136 flow [2024-06-28 01:27:53,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 306 transitions, 4027 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:27:53,321 INFO L231 Difference]: Finished difference. Result has 171 places, 262 transitions, 3415 flow [2024-06-28 01:27:53,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3221, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3415, PETRI_PLACES=171, PETRI_TRANSITIONS=262} [2024-06-28 01:27:53,322 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 118 predicate places. [2024-06-28 01:27:53,322 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 262 transitions, 3415 flow [2024-06-28 01:27:53,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:53,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:53,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:53,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:27:53,323 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:53,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:53,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1285925257, now seen corresponding path program 4 times [2024-06-28 01:27:53,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:53,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486755529] [2024-06-28 01:27:53,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:53,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:54,181 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 01:27:54,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:54,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486755529] [2024-06-28 01:27:54,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486755529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:54,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:54,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:54,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067282966] [2024-06-28 01:27:54,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:54,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:54,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:54,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:54,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 262 transitions, 3415 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:54,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:54,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:54,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:55,711 INFO L124 PetriNetUnfolderBase]: 5407/8943 cut-off events. [2024-06-28 01:27:55,711 INFO L125 PetriNetUnfolderBase]: For 147515/147515 co-relation queries the response was YES. [2024-06-28 01:27:55,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52135 conditions, 8943 events. 5407/8943 cut-off events. For 147515/147515 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 61094 event pairs, 828 based on Foata normal form. 12/8764 useless extension candidates. Maximal degree in co-relation 52059. Up to 5094 conditions per place. [2024-06-28 01:27:55,795 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 206 selfloop transitions, 85 changer transitions 0/301 dead transitions. [2024-06-28 01:27:55,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 301 transitions, 4161 flow [2024-06-28 01:27:55,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:55,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-28 01:27:55,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-28 01:27:55,797 INFO L175 Difference]: Start difference. First operand has 171 places, 262 transitions, 3415 flow. Second operand 7 states and 176 transitions. [2024-06-28 01:27:55,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 301 transitions, 4161 flow [2024-06-28 01:27:55,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 301 transitions, 3935 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:27:56,001 INFO L231 Difference]: Finished difference. Result has 171 places, 261 transitions, 3331 flow [2024-06-28 01:27:56,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3331, PETRI_PLACES=171, PETRI_TRANSITIONS=261} [2024-06-28 01:27:56,002 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 118 predicate places. [2024-06-28 01:27:56,003 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 261 transitions, 3331 flow [2024-06-28 01:27:56,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:56,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:56,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:56,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:27:56,003 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:56,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:56,004 INFO L85 PathProgramCache]: Analyzing trace with hash 611486463, now seen corresponding path program 3 times [2024-06-28 01:27:56,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:56,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640586529] [2024-06-28 01:27:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:56,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:56,855 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 01:27:56,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:56,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640586529] [2024-06-28 01:27:56,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640586529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:56,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:56,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:27:56,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873521698] [2024-06-28 01:27:56,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:56,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:27:56,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:56,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:27:56,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:27:56,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:56,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 261 transitions, 3331 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:56,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:56,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:56,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:58,402 INFO L124 PetriNetUnfolderBase]: 5424/9444 cut-off events. [2024-06-28 01:27:58,402 INFO L125 PetriNetUnfolderBase]: For 144477/144485 co-relation queries the response was YES. [2024-06-28 01:27:58,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52509 conditions, 9444 events. 5424/9444 cut-off events. For 144477/144485 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 68611 event pairs, 1983 based on Foata normal form. 9/9145 useless extension candidates. Maximal degree in co-relation 52432. Up to 7791 conditions per place. [2024-06-28 01:27:58,520 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 241 selfloop transitions, 36 changer transitions 0/287 dead transitions. [2024-06-28 01:27:58,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 287 transitions, 4043 flow [2024-06-28 01:27:58,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:27:58,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:27:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 01:27:58,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-28 01:27:58,522 INFO L175 Difference]: Start difference. First operand has 171 places, 261 transitions, 3331 flow. Second operand 7 states and 160 transitions. [2024-06-28 01:27:58,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 287 transitions, 4043 flow [2024-06-28 01:27:58,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 287 transitions, 3813 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:27:58,741 INFO L231 Difference]: Finished difference. Result has 172 places, 264 transitions, 3245 flow [2024-06-28 01:27:58,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3101, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3245, PETRI_PLACES=172, PETRI_TRANSITIONS=264} [2024-06-28 01:27:58,742 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 119 predicate places. [2024-06-28 01:27:58,742 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 264 transitions, 3245 flow [2024-06-28 01:27:58,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:58,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:58,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:58,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:27:58,742 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:27:58,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:58,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1969894698, now seen corresponding path program 6 times [2024-06-28 01:27:58,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:58,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019177255] [2024-06-28 01:27:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:58,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:59,518 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 01:27:59,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:59,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019177255] [2024-06-28 01:27:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019177255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:59,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:59,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:27:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288299194] [2024-06-28 01:27:59,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:59,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:27:59,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:59,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:27:59,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:27:59,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:27:59,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 264 transitions, 3245 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:59,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:59,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:27:59,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:00,970 INFO L124 PetriNetUnfolderBase]: 5514/9529 cut-off events. [2024-06-28 01:28:00,971 INFO L125 PetriNetUnfolderBase]: For 150030/150034 co-relation queries the response was YES. [2024-06-28 01:28:01,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52382 conditions, 9529 events. 5514/9529 cut-off events. For 150030/150034 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 68607 event pairs, 1557 based on Foata normal form. 7/9233 useless extension candidates. Maximal degree in co-relation 52305. Up to 7212 conditions per place. [2024-06-28 01:28:01,080 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 204 selfloop transitions, 86 changer transitions 0/300 dead transitions. [2024-06-28 01:28:01,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 300 transitions, 4231 flow [2024-06-28 01:28:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:01,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:28:01,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-28 01:28:01,082 INFO L175 Difference]: Start difference. First operand has 172 places, 264 transitions, 3245 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:28:01,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 300 transitions, 4231 flow [2024-06-28 01:28:01,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 300 transitions, 4109 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:01,288 INFO L231 Difference]: Finished difference. Result has 175 places, 272 transitions, 3481 flow [2024-06-28 01:28:01,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3481, PETRI_PLACES=175, PETRI_TRANSITIONS=272} [2024-06-28 01:28:01,288 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 122 predicate places. [2024-06-28 01:28:01,288 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 272 transitions, 3481 flow [2024-06-28 01:28:01,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:01,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:01,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:01,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:28:01,289 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:01,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash 611931933, now seen corresponding path program 4 times [2024-06-28 01:28:01,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:01,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095871036] [2024-06-28 01:28:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:01,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:02,279 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 01:28:02,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:02,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095871036] [2024-06-28 01:28:02,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095871036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:02,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:02,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:02,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550515052] [2024-06-28 01:28:02,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:02,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:02,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:02,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:02,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:02,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:02,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 272 transitions, 3481 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:02,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:02,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:02,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:03,751 INFO L124 PetriNetUnfolderBase]: 5516/9601 cut-off events. [2024-06-28 01:28:03,752 INFO L125 PetriNetUnfolderBase]: For 167297/167305 co-relation queries the response was YES. [2024-06-28 01:28:03,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54473 conditions, 9601 events. 5516/9601 cut-off events. For 167297/167305 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 69885 event pairs, 2007 based on Foata normal form. 9/9295 useless extension candidates. Maximal degree in co-relation 54394. Up to 7867 conditions per place. [2024-06-28 01:28:03,856 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 244 selfloop transitions, 47 changer transitions 0/301 dead transitions. [2024-06-28 01:28:03,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 301 transitions, 4247 flow [2024-06-28 01:28:03,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 01:28:03,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-28 01:28:03,858 INFO L175 Difference]: Start difference. First operand has 175 places, 272 transitions, 3481 flow. Second operand 7 states and 161 transitions. [2024-06-28 01:28:03,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 301 transitions, 4247 flow [2024-06-28 01:28:04,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 301 transitions, 4005 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:04,060 INFO L231 Difference]: Finished difference. Result has 179 places, 278 transitions, 3452 flow [2024-06-28 01:28:04,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3239, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3452, PETRI_PLACES=179, PETRI_TRANSITIONS=278} [2024-06-28 01:28:04,060 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2024-06-28 01:28:04,061 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 278 transitions, 3452 flow [2024-06-28 01:28:04,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:04,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:04,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:04,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:28:04,061 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:04,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash 604313528, now seen corresponding path program 1 times [2024-06-28 01:28:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:04,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981250639] [2024-06-28 01:28:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:04,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:04,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:04,838 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 01:28:04,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:04,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981250639] [2024-06-28 01:28:04,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981250639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:04,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:04,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:04,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960627608] [2024-06-28 01:28:04,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:04,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:04,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:04,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:04,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:04,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:28:04,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 278 transitions, 3452 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:04,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:04,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:28:04,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:06,364 INFO L124 PetriNetUnfolderBase]: 5218/8870 cut-off events. [2024-06-28 01:28:06,364 INFO L125 PetriNetUnfolderBase]: For 167051/167071 co-relation queries the response was YES. [2024-06-28 01:28:06,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51523 conditions, 8870 events. 5218/8870 cut-off events. For 167051/167071 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 63128 event pairs, 2104 based on Foata normal form. 5/8669 useless extension candidates. Maximal degree in co-relation 51442. Up to 7496 conditions per place. [2024-06-28 01:28:06,459 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 276 selfloop transitions, 18 changer transitions 0/310 dead transitions. [2024-06-28 01:28:06,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 310 transitions, 4241 flow [2024-06-28 01:28:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:28:06,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-28 01:28:06,460 INFO L175 Difference]: Start difference. First operand has 179 places, 278 transitions, 3452 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:28:06,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 310 transitions, 4241 flow [2024-06-28 01:28:06,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 310 transitions, 4140 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:06,690 INFO L231 Difference]: Finished difference. Result has 184 places, 285 transitions, 3507 flow [2024-06-28 01:28:06,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3351, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3507, PETRI_PLACES=184, PETRI_TRANSITIONS=285} [2024-06-28 01:28:06,691 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 131 predicate places. [2024-06-28 01:28:06,691 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 285 transitions, 3507 flow [2024-06-28 01:28:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:06,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:06,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:06,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:28:06,692 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:06,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash 433616895, now seen corresponding path program 1 times [2024-06-28 01:28:06,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:06,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173747130] [2024-06-28 01:28:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:06,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:07,489 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 01:28:07,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:07,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173747130] [2024-06-28 01:28:07,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173747130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:07,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:07,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:07,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23816246] [2024-06-28 01:28:07,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:07,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:07,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:07,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:07,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:28:07,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 285 transitions, 3507 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:07,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:07,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:28:07,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:08,998 INFO L124 PetriNetUnfolderBase]: 5276/8970 cut-off events. [2024-06-28 01:28:08,998 INFO L125 PetriNetUnfolderBase]: For 178589/178609 co-relation queries the response was YES. [2024-06-28 01:28:09,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53009 conditions, 8970 events. 5276/8970 cut-off events. For 178589/178609 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 64026 event pairs, 2093 based on Foata normal form. 10/8771 useless extension candidates. Maximal degree in co-relation 52925. Up to 7532 conditions per place. [2024-06-28 01:28:09,101 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 281 selfloop transitions, 18 changer transitions 0/315 dead transitions. [2024-06-28 01:28:09,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 315 transitions, 4273 flow [2024-06-28 01:28:09,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:09,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:28:09,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-28 01:28:09,103 INFO L175 Difference]: Start difference. First operand has 184 places, 285 transitions, 3507 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:28:09,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 315 transitions, 4273 flow [2024-06-28 01:28:09,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 315 transitions, 4192 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:09,306 INFO L231 Difference]: Finished difference. Result has 187 places, 289 transitions, 3527 flow [2024-06-28 01:28:09,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3527, PETRI_PLACES=187, PETRI_TRANSITIONS=289} [2024-06-28 01:28:09,307 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 134 predicate places. [2024-06-28 01:28:09,307 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 289 transitions, 3527 flow [2024-06-28 01:28:09,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:09,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:09,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:09,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:28:09,307 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:09,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:09,308 INFO L85 PathProgramCache]: Analyzing trace with hash 611670975, now seen corresponding path program 2 times [2024-06-28 01:28:09,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:09,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053603906] [2024-06-28 01:28:09,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:09,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:10,203 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 01:28:10,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:10,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053603906] [2024-06-28 01:28:10,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053603906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:10,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:10,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:10,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028609044] [2024-06-28 01:28:10,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:10,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:10,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:10,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:10,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:10,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:28:10,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 289 transitions, 3527 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:10,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:10,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:28:10,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:11,940 INFO L124 PetriNetUnfolderBase]: 5420/9502 cut-off events. [2024-06-28 01:28:11,941 INFO L125 PetriNetUnfolderBase]: For 192536/192602 co-relation queries the response was YES. [2024-06-28 01:28:12,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55492 conditions, 9502 events. 5420/9502 cut-off events. For 192536/192602 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 69891 event pairs, 2107 based on Foata normal form. 16/9211 useless extension candidates. Maximal degree in co-relation 55407. Up to 7699 conditions per place. [2024-06-28 01:28:12,068 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 280 selfloop transitions, 23 changer transitions 0/319 dead transitions. [2024-06-28 01:28:12,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 319 transitions, 4321 flow [2024-06-28 01:28:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:12,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:12,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:28:12,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167173252279635 [2024-06-28 01:28:12,070 INFO L175 Difference]: Start difference. First operand has 187 places, 289 transitions, 3527 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:28:12,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 319 transitions, 4321 flow [2024-06-28 01:28:12,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 319 transitions, 4250 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:12,332 INFO L231 Difference]: Finished difference. Result has 189 places, 293 transitions, 3575 flow [2024-06-28 01:28:12,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3456, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3575, PETRI_PLACES=189, PETRI_TRANSITIONS=293} [2024-06-28 01:28:12,332 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 136 predicate places. [2024-06-28 01:28:12,333 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 293 transitions, 3575 flow [2024-06-28 01:28:12,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:12,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:12,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:12,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:28:12,333 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:12,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:12,334 INFO L85 PathProgramCache]: Analyzing trace with hash 611937885, now seen corresponding path program 3 times [2024-06-28 01:28:12,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:12,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999316604] [2024-06-28 01:28:12,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:12,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:13,334 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 01:28:13,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:13,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999316604] [2024-06-28 01:28:13,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999316604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:13,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:13,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:13,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124859573] [2024-06-28 01:28:13,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:13,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:13,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:13,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:13,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:13,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:28:13,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 293 transitions, 3575 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:13,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:13,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:28:13,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:15,094 INFO L124 PetriNetUnfolderBase]: 5458/9564 cut-off events. [2024-06-28 01:28:15,094 INFO L125 PetriNetUnfolderBase]: For 196371/196437 co-relation queries the response was YES. [2024-06-28 01:28:15,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56635 conditions, 9564 events. 5458/9564 cut-off events. For 196371/196437 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 70330 event pairs, 2118 based on Foata normal form. 12/9265 useless extension candidates. Maximal degree in co-relation 56549. Up to 7711 conditions per place. [2024-06-28 01:28:15,192 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 280 selfloop transitions, 33 changer transitions 0/329 dead transitions. [2024-06-28 01:28:15,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 329 transitions, 4446 flow [2024-06-28 01:28:15,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:15,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 01:28:15,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-28 01:28:15,194 INFO L175 Difference]: Start difference. First operand has 189 places, 293 transitions, 3575 flow. Second operand 8 states and 184 transitions. [2024-06-28 01:28:15,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 329 transitions, 4446 flow [2024-06-28 01:28:15,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 329 transitions, 4310 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:15,435 INFO L231 Difference]: Finished difference. Result has 193 places, 305 transitions, 3675 flow [2024-06-28 01:28:15,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3486, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3675, PETRI_PLACES=193, PETRI_TRANSITIONS=305} [2024-06-28 01:28:15,436 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 140 predicate places. [2024-06-28 01:28:15,436 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 305 transitions, 3675 flow [2024-06-28 01:28:15,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:15,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:15,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:15,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:28:15,436 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:15,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:15,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1026966779, now seen corresponding path program 1 times [2024-06-28 01:28:15,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:15,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44940680] [2024-06-28 01:28:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:15,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:16,273 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 01:28:16,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:16,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44940680] [2024-06-28 01:28:16,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44940680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:16,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:16,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:16,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099345500] [2024-06-28 01:28:16,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:16,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:16,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:16,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:16,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:16,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:16,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 305 transitions, 3675 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:16,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:16,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:16,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:17,921 INFO L124 PetriNetUnfolderBase]: 5777/9549 cut-off events. [2024-06-28 01:28:17,922 INFO L125 PetriNetUnfolderBase]: For 200493/200503 co-relation queries the response was YES. [2024-06-28 01:28:17,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59062 conditions, 9549 events. 5777/9549 cut-off events. For 200493/200503 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 66229 event pairs, 1812 based on Foata normal form. 13/9349 useless extension candidates. Maximal degree in co-relation 58974. Up to 8025 conditions per place. [2024-06-28 01:28:18,030 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 265 selfloop transitions, 74 changer transitions 0/349 dead transitions. [2024-06-28 01:28:18,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 349 transitions, 4615 flow [2024-06-28 01:28:18,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:18,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:18,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 01:28:18,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-28 01:28:18,033 INFO L175 Difference]: Start difference. First operand has 193 places, 305 transitions, 3675 flow. Second operand 9 states and 222 transitions. [2024-06-28 01:28:18,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 349 transitions, 4615 flow [2024-06-28 01:28:18,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 349 transitions, 4569 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:18,512 INFO L231 Difference]: Finished difference. Result has 200 places, 310 transitions, 3894 flow [2024-06-28 01:28:18,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3629, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3894, PETRI_PLACES=200, PETRI_TRANSITIONS=310} [2024-06-28 01:28:18,512 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 147 predicate places. [2024-06-28 01:28:18,513 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 310 transitions, 3894 flow [2024-06-28 01:28:18,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:18,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:18,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:18,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:28:18,513 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:18,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:18,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1241854419, now seen corresponding path program 1 times [2024-06-28 01:28:18,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:18,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249561889] [2024-06-28 01:28:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:18,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:19,263 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 01:28:19,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:19,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249561889] [2024-06-28 01:28:19,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249561889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:19,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:19,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:19,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601515500] [2024-06-28 01:28:19,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:19,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:19,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:19,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:19,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:19,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 310 transitions, 3894 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:19,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:19,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:19,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:20,999 INFO L124 PetriNetUnfolderBase]: 5901/9730 cut-off events. [2024-06-28 01:28:20,999 INFO L125 PetriNetUnfolderBase]: For 221069/221075 co-relation queries the response was YES. [2024-06-28 01:28:21,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62734 conditions, 9730 events. 5901/9730 cut-off events. For 221069/221075 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 67345 event pairs, 1793 based on Foata normal form. 10/9519 useless extension candidates. Maximal degree in co-relation 62643. Up to 8236 conditions per place. [2024-06-28 01:28:21,137 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 278 selfloop transitions, 73 changer transitions 0/361 dead transitions. [2024-06-28 01:28:21,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 361 transitions, 5036 flow [2024-06-28 01:28:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:21,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:21,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-28 01:28:21,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-28 01:28:21,139 INFO L175 Difference]: Start difference. First operand has 200 places, 310 transitions, 3894 flow. Second operand 9 states and 219 transitions. [2024-06-28 01:28:21,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 361 transitions, 5036 flow [2024-06-28 01:28:21,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 361 transitions, 4769 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 01:28:21,475 INFO L231 Difference]: Finished difference. Result has 203 places, 326 transitions, 4112 flow [2024-06-28 01:28:21,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3663, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4112, PETRI_PLACES=203, PETRI_TRANSITIONS=326} [2024-06-28 01:28:21,476 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 150 predicate places. [2024-06-28 01:28:21,476 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 326 transitions, 4112 flow [2024-06-28 01:28:21,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:21,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:21,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:21,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:28:21,477 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:21,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:21,477 INFO L85 PathProgramCache]: Analyzing trace with hash 930426643, now seen corresponding path program 2 times [2024-06-28 01:28:21,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:21,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236116261] [2024-06-28 01:28:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:21,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:22,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:22,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236116261] [2024-06-28 01:28:22,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236116261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:22,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:22,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:22,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839787380] [2024-06-28 01:28:22,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:22,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:22,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:22,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:22,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:22,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:22,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 326 transitions, 4112 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:22,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:22,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:22,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:23,867 INFO L124 PetriNetUnfolderBase]: 5969/9845 cut-off events. [2024-06-28 01:28:23,868 INFO L125 PetriNetUnfolderBase]: For 228676/228682 co-relation queries the response was YES. [2024-06-28 01:28:23,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63584 conditions, 9845 events. 5969/9845 cut-off events. For 228676/228682 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 68298 event pairs, 1781 based on Foata normal form. 10/9630 useless extension candidates. Maximal degree in co-relation 63491. Up to 8288 conditions per place. [2024-06-28 01:28:24,003 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 277 selfloop transitions, 75 changer transitions 0/362 dead transitions. [2024-06-28 01:28:24,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 362 transitions, 5038 flow [2024-06-28 01:28:24,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:24,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:24,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:28:24,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 01:28:24,005 INFO L175 Difference]: Start difference. First operand has 203 places, 326 transitions, 4112 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:28:24,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 362 transitions, 5038 flow [2024-06-28 01:28:24,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 362 transitions, 4887 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:24,406 INFO L231 Difference]: Finished difference. Result has 207 places, 330 transitions, 4215 flow [2024-06-28 01:28:24,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3961, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4215, PETRI_PLACES=207, PETRI_TRANSITIONS=330} [2024-06-28 01:28:24,412 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 154 predicate places. [2024-06-28 01:28:24,412 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 330 transitions, 4215 flow [2024-06-28 01:28:24,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:24,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:24,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:24,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:28:24,413 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:24,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1225863165, now seen corresponding path program 3 times [2024-06-28 01:28:24,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:24,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811274688] [2024-06-28 01:28:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:24,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:25,156 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 01:28:25,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:25,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811274688] [2024-06-28 01:28:25,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811274688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:25,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:25,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:25,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798304639] [2024-06-28 01:28:25,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:25,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:25,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:25,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:25,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:25,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:25,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 330 transitions, 4215 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:25,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:25,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:25,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:26,917 INFO L124 PetriNetUnfolderBase]: 6037/9959 cut-off events. [2024-06-28 01:28:26,917 INFO L125 PetriNetUnfolderBase]: For 237775/237781 co-relation queries the response was YES. [2024-06-28 01:28:27,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64687 conditions, 9959 events. 6037/9959 cut-off events. For 237775/237781 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 69158 event pairs, 1770 based on Foata normal form. 10/9744 useless extension candidates. Maximal degree in co-relation 64593. Up to 8073 conditions per place. [2024-06-28 01:28:27,089 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 265 selfloop transitions, 93 changer transitions 0/368 dead transitions. [2024-06-28 01:28:27,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 368 transitions, 5263 flow [2024-06-28 01:28:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:27,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:27,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:28:27,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-28 01:28:27,091 INFO L175 Difference]: Start difference. First operand has 207 places, 330 transitions, 4215 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:28:27,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 368 transitions, 5263 flow [2024-06-28 01:28:27,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 368 transitions, 5061 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:27,455 INFO L231 Difference]: Finished difference. Result has 209 places, 334 transitions, 4307 flow [2024-06-28 01:28:27,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4023, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4307, PETRI_PLACES=209, PETRI_TRANSITIONS=334} [2024-06-28 01:28:27,456 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 156 predicate places. [2024-06-28 01:28:27,456 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 334 transitions, 4307 flow [2024-06-28 01:28:27,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:27,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:27,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:27,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:28:27,457 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:27,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:27,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1274856167, now seen corresponding path program 2 times [2024-06-28 01:28:27,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:27,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340858871] [2024-06-28 01:28:27,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:27,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:28,271 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 01:28:28,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:28,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340858871] [2024-06-28 01:28:28,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340858871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:28,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:28,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:28,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209849690] [2024-06-28 01:28:28,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:28,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:28,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:28,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:28,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:28,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:28,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 334 transitions, 4307 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:28,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:28,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:28,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:30,149 INFO L124 PetriNetUnfolderBase]: 6139/10103 cut-off events. [2024-06-28 01:28:30,149 INFO L125 PetriNetUnfolderBase]: For 238448/238458 co-relation queries the response was YES. [2024-06-28 01:28:30,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65380 conditions, 10103 events. 6139/10103 cut-off events. For 238448/238458 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 70144 event pairs, 1803 based on Foata normal form. 13/9888 useless extension candidates. Maximal degree in co-relation 65285. Up to 8474 conditions per place. [2024-06-28 01:28:30,285 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 287 selfloop transitions, 86 changer transitions 0/383 dead transitions. [2024-06-28 01:28:30,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 383 transitions, 5353 flow [2024-06-28 01:28:30,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:30,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:30,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:28:30,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-06-28 01:28:30,287 INFO L175 Difference]: Start difference. First operand has 209 places, 334 transitions, 4307 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:28:30,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 383 transitions, 5353 flow [2024-06-28 01:28:30,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 383 transitions, 5166 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:30,634 INFO L231 Difference]: Finished difference. Result has 213 places, 344 transitions, 4456 flow [2024-06-28 01:28:30,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4120, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4456, PETRI_PLACES=213, PETRI_TRANSITIONS=344} [2024-06-28 01:28:30,635 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 160 predicate places. [2024-06-28 01:28:30,635 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 344 transitions, 4456 flow [2024-06-28 01:28:30,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:30,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:30,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:30,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:28:30,636 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:30,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:30,636 INFO L85 PathProgramCache]: Analyzing trace with hash -165088671, now seen corresponding path program 3 times [2024-06-28 01:28:30,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:30,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390018787] [2024-06-28 01:28:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:30,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:31,625 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 01:28:31,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:31,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390018787] [2024-06-28 01:28:31,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390018787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:31,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:31,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:31,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252706189] [2024-06-28 01:28:31,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:31,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:31,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:31,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:31,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:31,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:31,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 344 transitions, 4456 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:31,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:31,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:31,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:33,500 INFO L124 PetriNetUnfolderBase]: 6254/10312 cut-off events. [2024-06-28 01:28:33,501 INFO L125 PetriNetUnfolderBase]: For 260902/260902 co-relation queries the response was YES. [2024-06-28 01:28:33,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68365 conditions, 10312 events. 6254/10312 cut-off events. For 260902/260902 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 71877 event pairs, 1736 based on Foata normal form. 3/10074 useless extension candidates. Maximal degree in co-relation 68269. Up to 8026 conditions per place. [2024-06-28 01:28:33,629 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 292 selfloop transitions, 136 changer transitions 0/438 dead transitions. [2024-06-28 01:28:33,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 438 transitions, 6448 flow [2024-06-28 01:28:33,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:33,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 01:28:33,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:28:33,631 INFO L175 Difference]: Start difference. First operand has 213 places, 344 transitions, 4456 flow. Second operand 9 states and 225 transitions. [2024-06-28 01:28:33,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 438 transitions, 6448 flow [2024-06-28 01:28:34,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 438 transitions, 6202 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 01:28:34,065 INFO L231 Difference]: Finished difference. Result has 218 places, 392 transitions, 5462 flow [2024-06-28 01:28:34,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4210, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5462, PETRI_PLACES=218, PETRI_TRANSITIONS=392} [2024-06-28 01:28:34,065 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 165 predicate places. [2024-06-28 01:28:34,066 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 392 transitions, 5462 flow [2024-06-28 01:28:34,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:34,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:34,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:34,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:28:34,066 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:34,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:34,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2044004749, now seen corresponding path program 1 times [2024-06-28 01:28:34,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:34,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943035205] [2024-06-28 01:28:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:34,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:34,987 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 01:28:34,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:34,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943035205] [2024-06-28 01:28:34,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943035205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:34,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:34,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:34,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396988012] [2024-06-28 01:28:34,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:34,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:34,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:35,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:35,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 392 transitions, 5462 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:35,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:35,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:35,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:37,138 INFO L124 PetriNetUnfolderBase]: 6288/10371 cut-off events. [2024-06-28 01:28:37,138 INFO L125 PetriNetUnfolderBase]: For 290196/290200 co-relation queries the response was YES. [2024-06-28 01:28:37,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72694 conditions, 10371 events. 6288/10371 cut-off events. For 290196/290200 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 72534 event pairs, 2130 based on Foata normal form. 6/10140 useless extension candidates. Maximal degree in co-relation 72594. Up to 8964 conditions per place. [2024-06-28 01:28:37,303 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 387 selfloop transitions, 35 changer transitions 0/432 dead transitions. [2024-06-28 01:28:37,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 432 transitions, 6554 flow [2024-06-28 01:28:37,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:37,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-28 01:28:37,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940898345153664 [2024-06-28 01:28:37,305 INFO L175 Difference]: Start difference. First operand has 218 places, 392 transitions, 5462 flow. Second operand 9 states and 209 transitions. [2024-06-28 01:28:37,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 432 transitions, 6554 flow [2024-06-28 01:28:37,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 432 transitions, 6410 flow, removed 65 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:37,846 INFO L231 Difference]: Finished difference. Result has 225 places, 395 transitions, 5482 flow [2024-06-28 01:28:37,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5318, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5482, PETRI_PLACES=225, PETRI_TRANSITIONS=395} [2024-06-28 01:28:37,847 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 172 predicate places. [2024-06-28 01:28:37,847 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 395 transitions, 5482 flow [2024-06-28 01:28:37,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:37,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:37,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:37,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:28:37,848 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:37,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:37,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2044004315, now seen corresponding path program 4 times [2024-06-28 01:28:37,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:37,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670791897] [2024-06-28 01:28:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:37,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:38,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:38,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:38,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670791897] [2024-06-28 01:28:38,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670791897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:38,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:38,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:38,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717645433] [2024-06-28 01:28:38,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:38,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:38,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:38,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:38,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:38,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:38,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 395 transitions, 5482 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:38,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:38,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:38,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:40,778 INFO L124 PetriNetUnfolderBase]: 6442/10522 cut-off events. [2024-06-28 01:28:40,779 INFO L125 PetriNetUnfolderBase]: For 305197/305203 co-relation queries the response was YES. [2024-06-28 01:28:40,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75038 conditions, 10522 events. 6442/10522 cut-off events. For 305197/305203 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 72767 event pairs, 1744 based on Foata normal form. 9/10308 useless extension candidates. Maximal degree in co-relation 74936. Up to 8276 conditions per place. [2024-06-28 01:28:40,936 INFO L140 encePairwiseOnDemand]: 31/47 looper letters, 323 selfloop transitions, 114 changer transitions 0/447 dead transitions. [2024-06-28 01:28:40,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 447 transitions, 6969 flow [2024-06-28 01:28:40,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:28:40,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-28 01:28:40,938 INFO L175 Difference]: Start difference. First operand has 225 places, 395 transitions, 5482 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:28:40,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 447 transitions, 6969 flow [2024-06-28 01:28:41,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 447 transitions, 6833 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:41,485 INFO L231 Difference]: Finished difference. Result has 229 places, 408 transitions, 5898 flow [2024-06-28 01:28:41,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5346, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5898, PETRI_PLACES=229, PETRI_TRANSITIONS=408} [2024-06-28 01:28:41,486 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 176 predicate places. [2024-06-28 01:28:41,486 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 408 transitions, 5898 flow [2024-06-28 01:28:41,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:41,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:41,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:41,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:28:41,487 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:41,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:41,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2098123249, now seen corresponding path program 4 times [2024-06-28 01:28:41,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:41,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169442213] [2024-06-28 01:28:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:41,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:42,084 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 01:28:42,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:42,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169442213] [2024-06-28 01:28:42,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169442213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:42,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:42,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:42,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835479077] [2024-06-28 01:28:42,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:42,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:42,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:42,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:42,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 408 transitions, 5898 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:42,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:42,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:42,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:44,022 INFO L124 PetriNetUnfolderBase]: 6538/10751 cut-off events. [2024-06-28 01:28:44,022 INFO L125 PetriNetUnfolderBase]: For 342223/342229 co-relation queries the response was YES. [2024-06-28 01:28:44,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79519 conditions, 10751 events. 6538/10751 cut-off events. For 342223/342229 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 75240 event pairs, 1598 based on Foata normal form. 14/10522 useless extension candidates. Maximal degree in co-relation 79414. Up to 8979 conditions per place. [2024-06-28 01:28:44,177 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 355 selfloop transitions, 81 changer transitions 0/446 dead transitions. [2024-06-28 01:28:44,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 446 transitions, 7148 flow [2024-06-28 01:28:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:44,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:28:44,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197568389057751 [2024-06-28 01:28:44,179 INFO L175 Difference]: Start difference. First operand has 229 places, 408 transitions, 5898 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:28:44,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 446 transitions, 7148 flow [2024-06-28 01:28:44,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 446 transitions, 6893 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:44,844 INFO L231 Difference]: Finished difference. Result has 231 places, 417 transitions, 6045 flow [2024-06-28 01:28:44,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5651, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6045, PETRI_PLACES=231, PETRI_TRANSITIONS=417} [2024-06-28 01:28:44,845 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 178 predicate places. [2024-06-28 01:28:44,845 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 417 transitions, 6045 flow [2024-06-28 01:28:44,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:44,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:44,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:44,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:28:44,846 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:44,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:44,846 INFO L85 PathProgramCache]: Analyzing trace with hash -644614761, now seen corresponding path program 5 times [2024-06-28 01:28:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:44,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898936583] [2024-06-28 01:28:44,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:44,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:45,489 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 01:28:45,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:45,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898936583] [2024-06-28 01:28:45,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898936583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:45,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:45,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:45,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741709934] [2024-06-28 01:28:45,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:45,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:45,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:45,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:45,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:45,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:45,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 417 transitions, 6045 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:45,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:45,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:45,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:47,534 INFO L124 PetriNetUnfolderBase]: 6566/10780 cut-off events. [2024-06-28 01:28:47,534 INFO L125 PetriNetUnfolderBase]: For 342089/342095 co-relation queries the response was YES. [2024-06-28 01:28:47,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80152 conditions, 10780 events. 6566/10780 cut-off events. For 342089/342095 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 75407 event pairs, 1604 based on Foata normal form. 10/10553 useless extension candidates. Maximal degree in co-relation 80045. Up to 8548 conditions per place. [2024-06-28 01:28:47,678 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 331 selfloop transitions, 108 changer transitions 0/449 dead transitions. [2024-06-28 01:28:47,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 449 transitions, 7253 flow [2024-06-28 01:28:47,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:47,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 01:28:47,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-28 01:28:47,679 INFO L175 Difference]: Start difference. First operand has 231 places, 417 transitions, 6045 flow. Second operand 7 states and 172 transitions. [2024-06-28 01:28:47,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 449 transitions, 7253 flow [2024-06-28 01:28:48,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 449 transitions, 7068 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:48,312 INFO L231 Difference]: Finished difference. Result has 235 places, 420 transitions, 6169 flow [2024-06-28 01:28:48,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5862, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6169, PETRI_PLACES=235, PETRI_TRANSITIONS=420} [2024-06-28 01:28:48,313 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 182 predicate places. [2024-06-28 01:28:48,313 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 420 transitions, 6169 flow [2024-06-28 01:28:48,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:48,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:48,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:48,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:28:48,314 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:48,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash -694360017, now seen corresponding path program 5 times [2024-06-28 01:28:48,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:48,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638893271] [2024-06-28 01:28:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:48,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:49,158 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 01:28:49,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:49,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638893271] [2024-06-28 01:28:49,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638893271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:49,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:49,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:49,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469369882] [2024-06-28 01:28:49,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:49,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:49,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:49,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:49,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:49,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:49,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 420 transitions, 6169 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:49,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:49,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:49,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:51,280 INFO L124 PetriNetUnfolderBase]: 6617/10896 cut-off events. [2024-06-28 01:28:51,280 INFO L125 PetriNetUnfolderBase]: For 346931/346941 co-relation queries the response was YES. [2024-06-28 01:28:51,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80775 conditions, 10896 events. 6617/10896 cut-off events. For 346931/346941 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 76644 event pairs, 1932 based on Foata normal form. 13/10660 useless extension candidates. Maximal degree in co-relation 80667. Up to 8998 conditions per place. [2024-06-28 01:28:51,519 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 346 selfloop transitions, 104 changer transitions 0/460 dead transitions. [2024-06-28 01:28:51,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 460 transitions, 7389 flow [2024-06-28 01:28:51,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:51,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:28:51,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 01:28:51,520 INFO L175 Difference]: Start difference. First operand has 235 places, 420 transitions, 6169 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:28:51,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 460 transitions, 7389 flow [2024-06-28 01:28:52,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 460 transitions, 7195 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:52,413 INFO L231 Difference]: Finished difference. Result has 239 places, 425 transitions, 6361 flow [2024-06-28 01:28:52,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5975, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6361, PETRI_PLACES=239, PETRI_TRANSITIONS=425} [2024-06-28 01:28:52,414 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 186 predicate places. [2024-06-28 01:28:52,414 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 425 transitions, 6361 flow [2024-06-28 01:28:52,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:52,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:52,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:52,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:28:52,415 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:52,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:52,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2092383165, now seen corresponding path program 6 times [2024-06-28 01:28:52,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:52,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591683350] [2024-06-28 01:28:52,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:52,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:53,354 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 01:28:53,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:53,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591683350] [2024-06-28 01:28:53,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591683350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:53,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:53,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:53,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599545508] [2024-06-28 01:28:53,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:53,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:53,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:53,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:53,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:53,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:53,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 425 transitions, 6361 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:53,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:53,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:53,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:55,583 INFO L124 PetriNetUnfolderBase]: 6672/10940 cut-off events. [2024-06-28 01:28:55,583 INFO L125 PetriNetUnfolderBase]: For 370461/370467 co-relation queries the response was YES. [2024-06-28 01:28:55,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82975 conditions, 10940 events. 6672/10940 cut-off events. For 370461/370467 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 76548 event pairs, 1581 based on Foata normal form. 9/10710 useless extension candidates. Maximal degree in co-relation 82866. Up to 8622 conditions per place. [2024-06-28 01:28:55,761 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 334 selfloop transitions, 120 changer transitions 0/464 dead transitions. [2024-06-28 01:28:55,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 464 transitions, 7715 flow [2024-06-28 01:28:55,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:55,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:28:55,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 01:28:55,762 INFO L175 Difference]: Start difference. First operand has 239 places, 425 transitions, 6361 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:28:55,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 464 transitions, 7715 flow [2024-06-28 01:28:56,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 464 transitions, 7474 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:56,583 INFO L231 Difference]: Finished difference. Result has 242 places, 430 transitions, 6536 flow [2024-06-28 01:28:56,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6120, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6536, PETRI_PLACES=242, PETRI_TRANSITIONS=430} [2024-06-28 01:28:56,583 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 189 predicate places. [2024-06-28 01:28:56,583 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 430 transitions, 6536 flow [2024-06-28 01:28:56,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:56,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:56,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:56,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:28:56,584 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:28:56,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:56,584 INFO L85 PathProgramCache]: Analyzing trace with hash -644606267, now seen corresponding path program 7 times [2024-06-28 01:28:56,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:56,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504011107] [2024-06-28 01:28:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:56,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:57,572 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 01:28:57,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:57,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504011107] [2024-06-28 01:28:57,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504011107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:57,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:57,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:57,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348640499] [2024-06-28 01:28:57,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:57,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:57,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:57,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:57,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:57,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:28:57,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 430 transitions, 6536 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:57,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:57,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:28:57,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:59,748 INFO L124 PetriNetUnfolderBase]: 6807/11093 cut-off events. [2024-06-28 01:28:59,749 INFO L125 PetriNetUnfolderBase]: For 408235/408241 co-relation queries the response was YES. [2024-06-28 01:28:59,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87183 conditions, 11093 events. 6807/11093 cut-off events. For 408235/408241 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 77155 event pairs, 1593 based on Foata normal form. 9/10872 useless extension candidates. Maximal degree in co-relation 87073. Up to 8295 conditions per place. [2024-06-28 01:28:59,922 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 319 selfloop transitions, 145 changer transitions 0/474 dead transitions. [2024-06-28 01:28:59,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 474 transitions, 8132 flow [2024-06-28 01:28:59,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:59,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:28:59,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 01:28:59,923 INFO L175 Difference]: Start difference. First operand has 242 places, 430 transitions, 6536 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:28:59,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 474 transitions, 8132 flow [2024-06-28 01:29:00,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 474 transitions, 7782 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:00,687 INFO L231 Difference]: Finished difference. Result has 245 places, 440 transitions, 6869 flow [2024-06-28 01:29:00,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6186, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6869, PETRI_PLACES=245, PETRI_TRANSITIONS=440} [2024-06-28 01:29:00,688 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 192 predicate places. [2024-06-28 01:29:00,688 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 440 transitions, 6869 flow [2024-06-28 01:29:00,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:00,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:00,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:00,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:29:00,689 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:00,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:00,689 INFO L85 PathProgramCache]: Analyzing trace with hash -644605833, now seen corresponding path program 2 times [2024-06-28 01:29:00,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:00,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040578529] [2024-06-28 01:29:00,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:00,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:01,670 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 01:29:01,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:01,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040578529] [2024-06-28 01:29:01,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040578529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:01,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:01,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:01,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432217670] [2024-06-28 01:29:01,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:01,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:01,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:01,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:01,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:01,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:01,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 440 transitions, 6869 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:01,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:01,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:01,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:03,989 INFO L124 PetriNetUnfolderBase]: 6841/11254 cut-off events. [2024-06-28 01:29:03,990 INFO L125 PetriNetUnfolderBase]: For 449867/449871 co-relation queries the response was YES. [2024-06-28 01:29:04,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90572 conditions, 11254 events. 6841/11254 cut-off events. For 449867/449871 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 79418 event pairs, 2113 based on Foata normal form. 6/11005 useless extension candidates. Maximal degree in co-relation 90460. Up to 9672 conditions per place. [2024-06-28 01:29:04,153 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 424 selfloop transitions, 41 changer transitions 0/475 dead transitions. [2024-06-28 01:29:04,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 475 transitions, 8051 flow [2024-06-28 01:29:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:04,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:04,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:29:04,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-28 01:29:04,154 INFO L175 Difference]: Start difference. First operand has 245 places, 440 transitions, 6869 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:29:04,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 475 transitions, 8051 flow [2024-06-28 01:29:05,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 475 transitions, 7769 flow, removed 84 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:05,214 INFO L231 Difference]: Finished difference. Result has 249 places, 443 transitions, 6785 flow [2024-06-28 01:29:05,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6587, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6785, PETRI_PLACES=249, PETRI_TRANSITIONS=443} [2024-06-28 01:29:05,215 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 196 predicate places. [2024-06-28 01:29:05,215 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 443 transitions, 6785 flow [2024-06-28 01:29:05,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:05,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:05,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:05,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:29:05,216 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:05,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:05,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1346930887, now seen corresponding path program 6 times [2024-06-28 01:29:05,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:05,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270367632] [2024-06-28 01:29:05,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:05,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:05,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:05,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270367632] [2024-06-28 01:29:05,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270367632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:05,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:05,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:05,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084112013] [2024-06-28 01:29:05,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:05,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:05,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:05,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:05,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:05,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:05,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 443 transitions, 6785 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:05,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:05,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:05,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:08,243 INFO L124 PetriNetUnfolderBase]: 6813/11197 cut-off events. [2024-06-28 01:29:08,243 INFO L125 PetriNetUnfolderBase]: For 434652/434652 co-relation queries the response was YES. [2024-06-28 01:29:08,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89087 conditions, 11197 events. 6813/11197 cut-off events. For 434652/434652 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 78753 event pairs, 1667 based on Foata normal form. 4/10943 useless extension candidates. Maximal degree in co-relation 88973. Up to 9470 conditions per place. [2024-06-28 01:29:08,380 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 385 selfloop transitions, 76 changer transitions 0/471 dead transitions. [2024-06-28 01:29:08,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 471 transitions, 7908 flow [2024-06-28 01:29:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 01:29:08,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-28 01:29:08,385 INFO L175 Difference]: Start difference. First operand has 249 places, 443 transitions, 6785 flow. Second operand 8 states and 184 transitions. [2024-06-28 01:29:08,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 471 transitions, 7908 flow [2024-06-28 01:29:09,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 471 transitions, 7702 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:09,194 INFO L231 Difference]: Finished difference. Result has 251 places, 444 transitions, 6766 flow [2024-06-28 01:29:09,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6579, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6766, PETRI_PLACES=251, PETRI_TRANSITIONS=444} [2024-06-28 01:29:09,194 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 198 predicate places. [2024-06-28 01:29:09,194 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 444 transitions, 6766 flow [2024-06-28 01:29:09,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:09,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:09,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:09,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:29:09,195 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:09,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:09,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1088794813, now seen corresponding path program 7 times [2024-06-28 01:29:09,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:09,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879956235] [2024-06-28 01:29:09,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:09,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:09,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:09,800 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 01:29:09,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:09,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879956235] [2024-06-28 01:29:09,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879956235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:09,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:09,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:09,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845754892] [2024-06-28 01:29:09,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:09,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:09,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:09,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:09,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:09,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:09,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 444 transitions, 6766 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:09,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:09,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:09,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:11,980 INFO L124 PetriNetUnfolderBase]: 6847/11244 cut-off events. [2024-06-28 01:29:11,981 INFO L125 PetriNetUnfolderBase]: For 435409/435409 co-relation queries the response was YES. [2024-06-28 01:29:12,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89289 conditions, 11244 events. 6847/11244 cut-off events. For 435409/435409 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 79161 event pairs, 1624 based on Foata normal form. 2/10988 useless extension candidates. Maximal degree in co-relation 89174. Up to 9308 conditions per place. [2024-06-28 01:29:12,220 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 369 selfloop transitions, 94 changer transitions 0/473 dead transitions. [2024-06-28 01:29:12,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 473 transitions, 7936 flow [2024-06-28 01:29:12,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:29:12,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:29:12,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:29:12,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-28 01:29:12,221 INFO L175 Difference]: Start difference. First operand has 251 places, 444 transitions, 6766 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:29:12,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 473 transitions, 7936 flow [2024-06-28 01:29:13,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 473 transitions, 7489 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-06-28 01:29:13,105 INFO L231 Difference]: Finished difference. Result has 248 places, 447 transitions, 6581 flow [2024-06-28 01:29:13,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6321, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6581, PETRI_PLACES=248, PETRI_TRANSITIONS=447} [2024-06-28 01:29:13,106 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 195 predicate places. [2024-06-28 01:29:13,106 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 447 transitions, 6581 flow [2024-06-28 01:29:13,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:13,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:13,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:13,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:29:13,107 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:13,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:13,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1270085337, now seen corresponding path program 8 times [2024-06-28 01:29:13,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:13,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507368491] [2024-06-28 01:29:13,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:13,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:13,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:13,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507368491] [2024-06-28 01:29:13,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507368491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:13,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:13,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:13,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999912513] [2024-06-28 01:29:13,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:13,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:13,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:13,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:13,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:13,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:13,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 447 transitions, 6581 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:13,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:13,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:13,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:16,022 INFO L124 PetriNetUnfolderBase]: 6881/11664 cut-off events. [2024-06-28 01:29:16,022 INFO L125 PetriNetUnfolderBase]: For 428065/428071 co-relation queries the response was YES. [2024-06-28 01:29:16,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89261 conditions, 11664 events. 6881/11664 cut-off events. For 428065/428071 co-relation queries the response was YES. Maximal size of possible extension queue 506. Compared 84527 event pairs, 1572 based on Foata normal form. 8/11316 useless extension candidates. Maximal degree in co-relation 89146. Up to 8751 conditions per place. [2024-06-28 01:29:16,211 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 339 selfloop transitions, 128 changer transitions 0/477 dead transitions. [2024-06-28 01:29:16,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 477 transitions, 7897 flow [2024-06-28 01:29:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:29:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:29:16,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:29:16,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167173252279635 [2024-06-28 01:29:16,212 INFO L175 Difference]: Start difference. First operand has 248 places, 447 transitions, 6581 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:29:16,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 477 transitions, 7897 flow [2024-06-28 01:29:16,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 477 transitions, 7571 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:16,984 INFO L231 Difference]: Finished difference. Result has 249 places, 450 transitions, 6589 flow [2024-06-28 01:29:16,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6269, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6589, PETRI_PLACES=249, PETRI_TRANSITIONS=450} [2024-06-28 01:29:16,984 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 196 predicate places. [2024-06-28 01:29:16,985 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 450 transitions, 6589 flow [2024-06-28 01:29:16,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:16,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:16,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:16,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:29:16,985 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:16,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:16,986 INFO L85 PathProgramCache]: Analyzing trace with hash -937187923, now seen corresponding path program 9 times [2024-06-28 01:29:16,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:16,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796100560] [2024-06-28 01:29:16,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:16,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:17,667 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 01:29:17,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:17,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796100560] [2024-06-28 01:29:17,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796100560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:17,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:17,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:29:17,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314631188] [2024-06-28 01:29:17,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:17,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:29:17,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:17,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:29:17,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:29:17,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:17,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 450 transitions, 6589 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:17,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:17,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:17,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:19,872 INFO L124 PetriNetUnfolderBase]: 6865/11646 cut-off events. [2024-06-28 01:29:19,873 INFO L125 PetriNetUnfolderBase]: For 386031/386037 co-relation queries the response was YES. [2024-06-28 01:29:19,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86407 conditions, 11646 events. 6865/11646 cut-off events. For 386031/386037 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 84461 event pairs, 1561 based on Foata normal form. 10/11298 useless extension candidates. Maximal degree in co-relation 86292. Up to 8738 conditions per place. [2024-06-28 01:29:20,055 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 349 selfloop transitions, 117 changer transitions 0/476 dead transitions. [2024-06-28 01:29:20,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 476 transitions, 7739 flow [2024-06-28 01:29:20,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:29:20,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:29:20,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:29:20,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167173252279635 [2024-06-28 01:29:20,056 INFO L175 Difference]: Start difference. First operand has 249 places, 450 transitions, 6589 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:29:20,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 476 transitions, 7739 flow [2024-06-28 01:29:20,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 476 transitions, 7428 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:20,750 INFO L231 Difference]: Finished difference. Result has 252 places, 450 transitions, 6520 flow [2024-06-28 01:29:20,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6278, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6520, PETRI_PLACES=252, PETRI_TRANSITIONS=450} [2024-06-28 01:29:20,751 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 199 predicate places. [2024-06-28 01:29:20,751 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 450 transitions, 6520 flow [2024-06-28 01:29:20,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:20,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:20,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:20,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:29:20,752 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:20,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1790497975, now seen corresponding path program 3 times [2024-06-28 01:29:20,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:20,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88043479] [2024-06-28 01:29:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:20,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:21,741 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 01:29:21,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88043479] [2024-06-28 01:29:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88043479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:21,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:21,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:21,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884781380] [2024-06-28 01:29:21,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:21,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:21,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:21,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:21,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:21,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 450 transitions, 6520 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:21,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:21,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:21,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:24,180 INFO L124 PetriNetUnfolderBase]: 6899/11830 cut-off events. [2024-06-28 01:29:24,181 INFO L125 PetriNetUnfolderBase]: For 401353/401353 co-relation queries the response was YES. [2024-06-28 01:29:24,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86810 conditions, 11830 events. 6899/11830 cut-off events. For 401353/401353 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 87211 event pairs, 2437 based on Foata normal form. 2/11445 useless extension candidates. Maximal degree in co-relation 86694. Up to 9807 conditions per place. [2024-06-28 01:29:24,334 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 452 selfloop transitions, 21 changer transitions 0/483 dead transitions. [2024-06-28 01:29:24,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 483 transitions, 7717 flow [2024-06-28 01:29:24,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-28 01:29:24,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48138297872340424 [2024-06-28 01:29:24,335 INFO L175 Difference]: Start difference. First operand has 252 places, 450 transitions, 6520 flow. Second operand 8 states and 181 transitions. [2024-06-28 01:29:24,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 483 transitions, 7717 flow [2024-06-28 01:29:24,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 483 transitions, 7446 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:24,891 INFO L231 Difference]: Finished difference. Result has 253 places, 453 transitions, 6402 flow [2024-06-28 01:29:24,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6249, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6402, PETRI_PLACES=253, PETRI_TRANSITIONS=453} [2024-06-28 01:29:24,891 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 200 predicate places. [2024-06-28 01:29:24,891 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 453 transitions, 6402 flow [2024-06-28 01:29:24,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:24,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:24,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:24,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:29:24,892 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:24,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash -937191519, now seen corresponding path program 8 times [2024-06-28 01:29:24,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:24,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643145891] [2024-06-28 01:29:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:24,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:25,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:25,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643145891] [2024-06-28 01:29:25,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643145891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:25,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:25,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:25,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075670013] [2024-06-28 01:29:25,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:25,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:25,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:25,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:25,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:25,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 453 transitions, 6402 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:25,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:25,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:25,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:28,333 INFO L124 PetriNetUnfolderBase]: 6950/11767 cut-off events. [2024-06-28 01:29:28,333 INFO L125 PetriNetUnfolderBase]: For 407804/407810 co-relation queries the response was YES. [2024-06-28 01:29:28,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87131 conditions, 11767 events. 6950/11767 cut-off events. For 407804/407810 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 85279 event pairs, 1575 based on Foata normal form. 9/11416 useless extension candidates. Maximal degree in co-relation 87014. Up to 8820 conditions per place. [2024-06-28 01:29:28,484 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 355 selfloop transitions, 124 changer transitions 0/489 dead transitions. [2024-06-28 01:29:28,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 489 transitions, 7762 flow [2024-06-28 01:29:28,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:28,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:29:28,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-28 01:29:28,485 INFO L175 Difference]: Start difference. First operand has 253 places, 453 transitions, 6402 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:29:28,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 489 transitions, 7762 flow [2024-06-28 01:29:29,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 489 transitions, 7589 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:29,028 INFO L231 Difference]: Finished difference. Result has 254 places, 458 transitions, 6651 flow [2024-06-28 01:29:29,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6229, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6651, PETRI_PLACES=254, PETRI_TRANSITIONS=458} [2024-06-28 01:29:29,029 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 201 predicate places. [2024-06-28 01:29:29,029 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 458 transitions, 6651 flow [2024-06-28 01:29:29,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:29,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:29,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:29,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:29:29,030 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:29,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:29,031 INFO L85 PathProgramCache]: Analyzing trace with hash -923369859, now seen corresponding path program 9 times [2024-06-28 01:29:29,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:29,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242985397] [2024-06-28 01:29:29,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:29,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:29,986 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 01:29:29,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:29,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242985397] [2024-06-28 01:29:29,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242985397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:29,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:29,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:29,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118088123] [2024-06-28 01:29:29,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:29,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:29,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:29,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:29,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:30,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:30,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 458 transitions, 6651 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:30,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:30,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:30,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:32,232 INFO L124 PetriNetUnfolderBase]: 7120/12102 cut-off events. [2024-06-28 01:29:32,232 INFO L125 PetriNetUnfolderBase]: For 450497/450503 co-relation queries the response was YES. [2024-06-28 01:29:32,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92557 conditions, 12102 events. 7120/12102 cut-off events. For 450497/450503 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 88512 event pairs, 1602 based on Foata normal form. 9/11725 useless extension candidates. Maximal degree in co-relation 92440. Up to 8179 conditions per place. [2024-06-28 01:29:32,433 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 319 selfloop transitions, 184 changer transitions 0/513 dead transitions. [2024-06-28 01:29:32,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 513 transitions, 8615 flow [2024-06-28 01:29:32,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:29:32,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-28 01:29:32,435 INFO L175 Difference]: Start difference. First operand has 254 places, 458 transitions, 6651 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:29:32,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 513 transitions, 8615 flow [2024-06-28 01:29:33,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 513 transitions, 8229 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:33,219 INFO L231 Difference]: Finished difference. Result has 258 places, 481 transitions, 7292 flow [2024-06-28 01:29:33,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6265, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7292, PETRI_PLACES=258, PETRI_TRANSITIONS=481} [2024-06-28 01:29:33,220 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 205 predicate places. [2024-06-28 01:29:33,220 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 481 transitions, 7292 flow [2024-06-28 01:29:33,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:33,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:33,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:33,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:29:33,221 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:33,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:33,221 INFO L85 PathProgramCache]: Analyzing trace with hash -937178995, now seen corresponding path program 4 times [2024-06-28 01:29:33,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:33,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405433288] [2024-06-28 01:29:33,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:33,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:34,246 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 01:29:34,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:34,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405433288] [2024-06-28 01:29:34,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405433288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:34,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:34,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:34,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989075500] [2024-06-28 01:29:34,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:34,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:34,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:34,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:34,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:34,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:34,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 481 transitions, 7292 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:34,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:34,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:34,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:36,657 INFO L124 PetriNetUnfolderBase]: 7154/12230 cut-off events. [2024-06-28 01:29:36,657 INFO L125 PetriNetUnfolderBase]: For 490323/490331 co-relation queries the response was YES. [2024-06-28 01:29:36,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96243 conditions, 12230 events. 7154/12230 cut-off events. For 490323/490331 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 90249 event pairs, 2124 based on Foata normal form. 10/11840 useless extension candidates. Maximal degree in co-relation 96123. Up to 10113 conditions per place. [2024-06-28 01:29:36,892 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 464 selfloop transitions, 39 changer transitions 0/513 dead transitions. [2024-06-28 01:29:36,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 513 transitions, 8556 flow [2024-06-28 01:29:36,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 01:29:36,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48404255319148937 [2024-06-28 01:29:36,893 INFO L175 Difference]: Start difference. First operand has 258 places, 481 transitions, 7292 flow. Second operand 8 states and 182 transitions. [2024-06-28 01:29:36,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 513 transitions, 8556 flow [2024-06-28 01:29:37,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 513 transitions, 8255 flow, removed 124 selfloop flow, removed 2 redundant places. [2024-06-28 01:29:37,847 INFO L231 Difference]: Finished difference. Result has 264 places, 484 transitions, 7191 flow [2024-06-28 01:29:37,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6991, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7191, PETRI_PLACES=264, PETRI_TRANSITIONS=484} [2024-06-28 01:29:37,848 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 211 predicate places. [2024-06-28 01:29:37,849 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 484 transitions, 7191 flow [2024-06-28 01:29:37,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:37,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:37,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:37,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:29:37,849 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:37,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:37,850 INFO L85 PathProgramCache]: Analyzing trace with hash -937179429, now seen corresponding path program 10 times [2024-06-28 01:29:37,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:37,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98270858] [2024-06-28 01:29:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:37,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:38,822 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 01:29:38,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:38,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98270858] [2024-06-28 01:29:38,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98270858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:38,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:38,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:38,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760633956] [2024-06-28 01:29:38,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:38,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:38,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:38,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:38,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 484 transitions, 7191 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:38,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:38,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:38,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:41,237 INFO L124 PetriNetUnfolderBase]: 7189/12138 cut-off events. [2024-06-28 01:29:41,237 INFO L125 PetriNetUnfolderBase]: For 459952/459958 co-relation queries the response was YES. [2024-06-28 01:29:41,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92903 conditions, 12138 events. 7189/12138 cut-off events. For 459952/459958 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 88119 event pairs, 1581 based on Foata normal form. 9/11782 useless extension candidates. Maximal degree in co-relation 92781. Up to 9009 conditions per place. [2024-06-28 01:29:41,427 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 381 selfloop transitions, 130 changer transitions 0/521 dead transitions. [2024-06-28 01:29:41,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 521 transitions, 8702 flow [2024-06-28 01:29:41,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:41,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:41,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-28 01:29:41,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-28 01:29:41,429 INFO L175 Difference]: Start difference. First operand has 264 places, 484 transitions, 7191 flow. Second operand 8 states and 195 transitions. [2024-06-28 01:29:41,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 521 transitions, 8702 flow [2024-06-28 01:29:42,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 521 transitions, 8524 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:42,561 INFO L231 Difference]: Finished difference. Result has 267 places, 491 transitions, 7540 flow [2024-06-28 01:29:42,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7013, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7540, PETRI_PLACES=267, PETRI_TRANSITIONS=491} [2024-06-28 01:29:42,562 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 214 predicate places. [2024-06-28 01:29:42,563 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 491 transitions, 7540 flow [2024-06-28 01:29:42,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:42,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:42,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:42,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:29:42,563 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:42,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:42,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1790022745, now seen corresponding path program 5 times [2024-06-28 01:29:42,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:42,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380920791] [2024-06-28 01:29:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:42,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:43,514 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 01:29:43,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:43,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380920791] [2024-06-28 01:29:43,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380920791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:43,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:43,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:43,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043835334] [2024-06-28 01:29:43,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:43,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:43,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:43,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:43,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:43,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:29:43,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 491 transitions, 7540 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:43,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:43,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:29:43,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:45,866 INFO L124 PetriNetUnfolderBase]: 7193/12310 cut-off events. [2024-06-28 01:29:45,867 INFO L125 PetriNetUnfolderBase]: For 477599/477607 co-relation queries the response was YES. [2024-06-28 01:29:45,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94331 conditions, 12310 events. 7193/12310 cut-off events. For 477599/477607 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 91162 event pairs, 2115 based on Foata normal form. 10/11916 useless extension candidates. Maximal degree in co-relation 94207. Up to 10001 conditions per place. [2024-06-28 01:29:46,047 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 453 selfloop transitions, 63 changer transitions 0/526 dead transitions. [2024-06-28 01:29:46,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 526 transitions, 8853 flow [2024-06-28 01:29:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:46,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 01:29:46,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-28 01:29:46,048 INFO L175 Difference]: Start difference. First operand has 267 places, 491 transitions, 7540 flow. Second operand 8 states and 187 transitions. [2024-06-28 01:29:46,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 526 transitions, 8853 flow [2024-06-28 01:29:47,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 526 transitions, 8548 flow, removed 86 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:47,296 INFO L231 Difference]: Finished difference. Result has 271 places, 494 transitions, 7493 flow [2024-06-28 01:29:47,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7235, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7493, PETRI_PLACES=271, PETRI_TRANSITIONS=494} [2024-06-28 01:29:47,297 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 218 predicate places. [2024-06-28 01:29:47,297 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 494 transitions, 7493 flow [2024-06-28 01:29:47,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:47,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:47,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:47,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:29:47,297 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:47,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash 553469205, now seen corresponding path program 1 times [2024-06-28 01:29:47,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:47,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349901650] [2024-06-28 01:29:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:47,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:48,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:48,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349901650] [2024-06-28 01:29:48,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349901650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:48,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:48,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:48,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909457291] [2024-06-28 01:29:48,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:48,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:48,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:48,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:48,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:48,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:29:48,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 494 transitions, 7493 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:48,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:48,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:29:48,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:50,749 INFO L124 PetriNetUnfolderBase]: 6931/11598 cut-off events. [2024-06-28 01:29:50,749 INFO L125 PetriNetUnfolderBase]: For 480411/480515 co-relation queries the response was YES. [2024-06-28 01:29:50,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92261 conditions, 11598 events. 6931/11598 cut-off events. For 480411/480515 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 84274 event pairs, 2329 based on Foata normal form. 49/11362 useless extension candidates. Maximal degree in co-relation 92135. Up to 9529 conditions per place. [2024-06-28 01:29:50,934 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 474 selfloop transitions, 21 changer transitions 0/528 dead transitions. [2024-06-28 01:29:50,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 528 transitions, 8701 flow [2024-06-28 01:29:50,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:29:50,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-28 01:29:50,935 INFO L175 Difference]: Start difference. First operand has 271 places, 494 transitions, 7493 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:29:50,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 528 transitions, 8701 flow [2024-06-28 01:29:52,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 528 transitions, 8465 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:52,047 INFO L231 Difference]: Finished difference. Result has 273 places, 497 transitions, 7385 flow [2024-06-28 01:29:52,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7257, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7385, PETRI_PLACES=273, PETRI_TRANSITIONS=497} [2024-06-28 01:29:52,048 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 220 predicate places. [2024-06-28 01:29:52,048 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 497 transitions, 7385 flow [2024-06-28 01:29:52,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:52,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:52,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:52,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:29:52,049 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:52,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:52,049 INFO L85 PathProgramCache]: Analyzing trace with hash 557223615, now seen corresponding path program 2 times [2024-06-28 01:29:52,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:52,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367415937] [2024-06-28 01:29:52,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:52,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:53,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:53,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367415937] [2024-06-28 01:29:53,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367415937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:53,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:53,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:53,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431872188] [2024-06-28 01:29:53,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:53,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:53,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:53,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:53,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:53,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:29:53,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 497 transitions, 7385 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:53,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:53,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:29:53,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:55,730 INFO L124 PetriNetUnfolderBase]: 6997/11698 cut-off events. [2024-06-28 01:29:55,730 INFO L125 PetriNetUnfolderBase]: For 491725/491839 co-relation queries the response was YES. [2024-06-28 01:29:55,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93333 conditions, 11698 events. 6997/11698 cut-off events. For 491725/491839 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 85078 event pairs, 2304 based on Foata normal form. 49/11464 useless extension candidates. Maximal degree in co-relation 93206. Up to 9554 conditions per place. [2024-06-28 01:29:55,923 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 472 selfloop transitions, 31 changer transitions 0/536 dead transitions. [2024-06-28 01:29:55,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 536 transitions, 8818 flow [2024-06-28 01:29:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:55,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-28 01:29:55,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-28 01:29:55,925 INFO L175 Difference]: Start difference. First operand has 273 places, 497 transitions, 7385 flow. Second operand 8 states and 193 transitions. [2024-06-28 01:29:55,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 536 transitions, 8818 flow [2024-06-28 01:29:56,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 536 transitions, 8724 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:56,968 INFO L231 Difference]: Finished difference. Result has 275 places, 504 transitions, 7534 flow [2024-06-28 01:29:56,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7291, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7534, PETRI_PLACES=275, PETRI_TRANSITIONS=504} [2024-06-28 01:29:56,969 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 222 predicate places. [2024-06-28 01:29:56,969 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 504 transitions, 7534 flow [2024-06-28 01:29:56,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:56,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:56,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:56,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:29:56,970 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:29:56,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:56,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1781932799, now seen corresponding path program 3 times [2024-06-28 01:29:56,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:56,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780944103] [2024-06-28 01:29:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:56,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:58,083 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 01:29:58,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:58,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780944103] [2024-06-28 01:29:58,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780944103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:58,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:58,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:58,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508548264] [2024-06-28 01:29:58,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:58,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:58,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:58,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:58,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:58,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:29:58,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 504 transitions, 7534 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:58,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:58,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:29:58,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:00,854 INFO L124 PetriNetUnfolderBase]: 7153/12245 cut-off events. [2024-06-28 01:30:00,854 INFO L125 PetriNetUnfolderBase]: For 525195/525597 co-relation queries the response was YES. [2024-06-28 01:30:00,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96457 conditions, 12245 events. 7153/12245 cut-off events. For 525195/525597 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 91043 event pairs, 2295 based on Foata normal form. 53/11900 useless extension candidates. Maximal degree in co-relation 96329. Up to 9725 conditions per place. [2024-06-28 01:30:01,044 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 474 selfloop transitions, 36 changer transitions 0/543 dead transitions. [2024-06-28 01:30:01,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 543 transitions, 9005 flow [2024-06-28 01:30:01,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:01,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-28 01:30:01,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-28 01:30:01,046 INFO L175 Difference]: Start difference. First operand has 275 places, 504 transitions, 7534 flow. Second operand 8 states and 194 transitions. [2024-06-28 01:30:01,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 543 transitions, 9005 flow [2024-06-28 01:30:02,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 543 transitions, 8916 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:02,277 INFO L231 Difference]: Finished difference. Result has 279 places, 511 transitions, 7712 flow [2024-06-28 01:30:02,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7445, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7712, PETRI_PLACES=279, PETRI_TRANSITIONS=511} [2024-06-28 01:30:02,277 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 226 predicate places. [2024-06-28 01:30:02,277 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 511 transitions, 7712 flow [2024-06-28 01:30:02,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:02,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:02,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:02,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:30:02,278 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:02,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:02,278 INFO L85 PathProgramCache]: Analyzing trace with hash -923185161, now seen corresponding path program 4 times [2024-06-28 01:30:02,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:02,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866031160] [2024-06-28 01:30:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:02,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:03,441 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 01:30:03,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:03,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866031160] [2024-06-28 01:30:03,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866031160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:03,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:03,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873800137] [2024-06-28 01:30:03,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:03,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:03,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:03,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:03,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-28 01:30:03,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 511 transitions, 7712 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:03,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:03,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-28 01:30:03,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:05,927 INFO L124 PetriNetUnfolderBase]: 7157/12261 cut-off events. [2024-06-28 01:30:05,928 INFO L125 PetriNetUnfolderBase]: For 528249/528651 co-relation queries the response was YES. [2024-06-28 01:30:06,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97358 conditions, 12261 events. 7157/12261 cut-off events. For 528249/528651 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 91193 event pairs, 2288 based on Foata normal form. 52/11915 useless extension candidates. Maximal degree in co-relation 97228. Up to 9676 conditions per place. [2024-06-28 01:30:06,140 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 469 selfloop transitions, 45 changer transitions 0/547 dead transitions. [2024-06-28 01:30:06,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 547 transitions, 9058 flow [2024-06-28 01:30:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:30:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:30:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 01:30:06,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-28 01:30:06,142 INFO L175 Difference]: Start difference. First operand has 279 places, 511 transitions, 7712 flow. Second operand 8 states and 191 transitions. [2024-06-28 01:30:06,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 547 transitions, 9058 flow [2024-06-28 01:30:07,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 547 transitions, 8901 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-06-28 01:30:07,741 INFO L231 Difference]: Finished difference. Result has 284 places, 518 transitions, 7856 flow [2024-06-28 01:30:07,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7603, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7856, PETRI_PLACES=284, PETRI_TRANSITIONS=518} [2024-06-28 01:30:07,742 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 231 predicate places. [2024-06-28 01:30:07,742 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 518 transitions, 7856 flow [2024-06-28 01:30:07,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:07,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:07,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:07,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:30:07,743 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:07,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:07,745 INFO L85 PathProgramCache]: Analyzing trace with hash -922877331, now seen corresponding path program 1 times [2024-06-28 01:30:07,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:07,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808786626] [2024-06-28 01:30:07,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:07,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:09,474 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 01:30:09,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:09,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808786626] [2024-06-28 01:30:09,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808786626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:09,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:09,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:09,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888967206] [2024-06-28 01:30:09,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:09,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:09,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:09,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:09,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:09,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 518 transitions, 7856 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 01:30:09,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:09,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:09,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:12,218 INFO L124 PetriNetUnfolderBase]: 7393/12573 cut-off events. [2024-06-28 01:30:12,218 INFO L125 PetriNetUnfolderBase]: For 538113/538113 co-relation queries the response was YES. [2024-06-28 01:30:12,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99849 conditions, 12573 events. 7393/12573 cut-off events. For 538113/538113 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 93008 event pairs, 2488 based on Foata normal form. 2/12185 useless extension candidates. Maximal degree in co-relation 99716. Up to 10485 conditions per place. [2024-06-28 01:30:12,449 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 524 selfloop transitions, 21 changer transitions 0/555 dead transitions. [2024-06-28 01:30:12,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 555 transitions, 9222 flow [2024-06-28 01:30:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:12,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 200 transitions. [2024-06-28 01:30:12,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728132387706856 [2024-06-28 01:30:12,450 INFO L175 Difference]: Start difference. First operand has 284 places, 518 transitions, 7856 flow. Second operand 9 states and 200 transitions. [2024-06-28 01:30:12,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 555 transitions, 9222 flow [2024-06-28 01:30:13,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 555 transitions, 9100 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 01:30:13,830 INFO L231 Difference]: Finished difference. Result has 289 places, 521 transitions, 7893 flow [2024-06-28 01:30:13,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7735, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7893, PETRI_PLACES=289, PETRI_TRANSITIONS=521} [2024-06-28 01:30:13,831 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 236 predicate places. [2024-06-28 01:30:13,831 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 521 transitions, 7893 flow [2024-06-28 01:30:13,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 01:30:13,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:13,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:13,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:30:13,832 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:13,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:13,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1915380795, now seen corresponding path program 1 times [2024-06-28 01:30:13,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:13,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305449662] [2024-06-28 01:30:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:13,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:13,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:14,716 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 01:30:14,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:14,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305449662] [2024-06-28 01:30:14,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305449662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:14,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:14,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:14,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386968203] [2024-06-28 01:30:14,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:14,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:14,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:14,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:14,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:14,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:14,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 521 transitions, 7893 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:14,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:14,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:14,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:17,365 INFO L124 PetriNetUnfolderBase]: 7574/12526 cut-off events. [2024-06-28 01:30:17,366 INFO L125 PetriNetUnfolderBase]: For 559993/560003 co-relation queries the response was YES. [2024-06-28 01:30:17,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101879 conditions, 12526 events. 7574/12526 cut-off events. For 559993/560003 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 90333 event pairs, 2057 based on Foata normal form. 20/12247 useless extension candidates. Maximal degree in co-relation 101744. Up to 10375 conditions per place. [2024-06-28 01:30:17,591 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 483 selfloop transitions, 80 changer transitions 0/573 dead transitions. [2024-06-28 01:30:17,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 573 transitions, 9423 flow [2024-06-28 01:30:17,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-28 01:30:17,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-28 01:30:17,592 INFO L175 Difference]: Start difference. First operand has 289 places, 521 transitions, 7893 flow. Second operand 9 states and 225 transitions. [2024-06-28 01:30:17,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 573 transitions, 9423 flow [2024-06-28 01:30:19,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 573 transitions, 9292 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:19,087 INFO L231 Difference]: Finished difference. Result has 293 places, 527 transitions, 8097 flow [2024-06-28 01:30:19,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7762, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8097, PETRI_PLACES=293, PETRI_TRANSITIONS=527} [2024-06-28 01:30:19,088 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 240 predicate places. [2024-06-28 01:30:19,088 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 527 transitions, 8097 flow [2024-06-28 01:30:19,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:19,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:19,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:19,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:30:19,088 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:19,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1771189179, now seen corresponding path program 2 times [2024-06-28 01:30:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:19,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961144107] [2024-06-28 01:30:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:19,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:20,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:20,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961144107] [2024-06-28 01:30:20,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961144107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:20,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:20,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:20,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066238135] [2024-06-28 01:30:20,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:20,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:20,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:20,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:20,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:20,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:20,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 527 transitions, 8097 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:20,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:20,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:20,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:23,679 INFO L124 PetriNetUnfolderBase]: 7730/12747 cut-off events. [2024-06-28 01:30:23,679 INFO L125 PetriNetUnfolderBase]: For 590574/590584 co-relation queries the response was YES. [2024-06-28 01:30:23,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105336 conditions, 12747 events. 7730/12747 cut-off events. For 590574/590584 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 91985 event pairs, 2134 based on Foata normal form. 22/12474 useless extension candidates. Maximal degree in co-relation 105199. Up to 10543 conditions per place. [2024-06-28 01:30:23,877 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 479 selfloop transitions, 84 changer transitions 0/573 dead transitions. [2024-06-28 01:30:23,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 573 transitions, 9579 flow [2024-06-28 01:30:23,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:30:23,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-28 01:30:23,880 INFO L175 Difference]: Start difference. First operand has 293 places, 527 transitions, 8097 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:30:23,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 573 transitions, 9579 flow [2024-06-28 01:30:25,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 573 transitions, 9341 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 01:30:25,347 INFO L231 Difference]: Finished difference. Result has 297 places, 529 transitions, 8129 flow [2024-06-28 01:30:25,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7859, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8129, PETRI_PLACES=297, PETRI_TRANSITIONS=529} [2024-06-28 01:30:25,348 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 244 predicate places. [2024-06-28 01:30:25,348 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 529 transitions, 8129 flow [2024-06-28 01:30:25,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:25,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:25,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:25,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:30:25,349 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:25,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:25,349 INFO L85 PathProgramCache]: Analyzing trace with hash 69620219, now seen corresponding path program 3 times [2024-06-28 01:30:25,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:25,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35456684] [2024-06-28 01:30:25,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:25,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:26,006 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 01:30:26,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:26,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35456684] [2024-06-28 01:30:26,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35456684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:26,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:26,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:26,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801457035] [2024-06-28 01:30:26,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:26,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:26,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:26,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:26,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:26,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:26,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 529 transitions, 8129 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:26,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:26,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:26,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:29,385 INFO L124 PetriNetUnfolderBase]: 8036/13311 cut-off events. [2024-06-28 01:30:29,385 INFO L125 PetriNetUnfolderBase]: For 617962/617972 co-relation queries the response was YES. [2024-06-28 01:30:29,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109177 conditions, 13311 events. 8036/13311 cut-off events. For 617962/617972 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 96838 event pairs, 1880 based on Foata normal form. 20/13012 useless extension candidates. Maximal degree in co-relation 109039. Up to 10830 conditions per place. [2024-06-28 01:30:29,706 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 491 selfloop transitions, 92 changer transitions 0/593 dead transitions. [2024-06-28 01:30:29,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 593 transitions, 9871 flow [2024-06-28 01:30:29,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:29,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:30:29,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-28 01:30:29,708 INFO L175 Difference]: Start difference. First operand has 297 places, 529 transitions, 8129 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:30:29,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 593 transitions, 9871 flow [2024-06-28 01:30:31,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 593 transitions, 9679 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:31,284 INFO L231 Difference]: Finished difference. Result has 302 places, 547 transitions, 8502 flow [2024-06-28 01:30:31,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7937, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8502, PETRI_PLACES=302, PETRI_TRANSITIONS=547} [2024-06-28 01:30:31,286 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 249 predicate places. [2024-06-28 01:30:31,286 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 547 transitions, 8502 flow [2024-06-28 01:30:31,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:31,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:31,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:31,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:30:31,289 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:31,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:31,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1771201083, now seen corresponding path program 1 times [2024-06-28 01:30:31,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:31,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36754245] [2024-06-28 01:30:31,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:31,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:32,244 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 01:30:32,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:32,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36754245] [2024-06-28 01:30:32,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36754245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:32,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:32,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:32,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778630287] [2024-06-28 01:30:32,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:32,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:32,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:32,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:32,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:32,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 547 transitions, 8502 flow. Second operand has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 01:30:32,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:32,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:32,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:35,923 INFO L124 PetriNetUnfolderBase]: 8138/13463 cut-off events. [2024-06-28 01:30:35,923 INFO L125 PetriNetUnfolderBase]: For 649779/649789 co-relation queries the response was YES. [2024-06-28 01:30:36,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113455 conditions, 13463 events. 8138/13463 cut-off events. For 649779/649789 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 98053 event pairs, 2264 based on Foata normal form. 16/13157 useless extension candidates. Maximal degree in co-relation 113314. Up to 11173 conditions per place. [2024-06-28 01:30:36,144 INFO L140 encePairwiseOnDemand]: 30/47 looper letters, 490 selfloop transitions, 97 changer transitions 0/597 dead transitions. [2024-06-28 01:30:36,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 597 transitions, 10102 flow [2024-06-28 01:30:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:36,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-28 01:30:36,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-06-28 01:30:36,145 INFO L175 Difference]: Start difference. First operand has 302 places, 547 transitions, 8502 flow. Second operand 10 states and 246 transitions. [2024-06-28 01:30:36,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 597 transitions, 10102 flow [2024-06-28 01:30:37,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 597 transitions, 9835 flow, removed 88 selfloop flow, removed 5 redundant places. [2024-06-28 01:30:37,894 INFO L231 Difference]: Finished difference. Result has 307 places, 552 transitions, 8648 flow [2024-06-28 01:30:37,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8235, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8648, PETRI_PLACES=307, PETRI_TRANSITIONS=552} [2024-06-28 01:30:37,895 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 254 predicate places. [2024-06-28 01:30:37,895 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 552 transitions, 8648 flow [2024-06-28 01:30:37,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.6) internal successors, (146), 10 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 01:30:37,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:37,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:37,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:30:37,896 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:37,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1357142063, now seen corresponding path program 4 times [2024-06-28 01:30:37,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:37,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347004007] [2024-06-28 01:30:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:37,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:38,625 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 01:30:38,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:38,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347004007] [2024-06-28 01:30:38,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347004007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:38,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:38,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:38,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681164597] [2024-06-28 01:30:38,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:38,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:38,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:38,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:38,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:38,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 552 transitions, 8648 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:38,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:38,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:38,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:42,599 INFO L124 PetriNetUnfolderBase]: 8775/14538 cut-off events. [2024-06-28 01:30:42,600 INFO L125 PetriNetUnfolderBase]: For 709383/709393 co-relation queries the response was YES. [2024-06-28 01:30:42,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122387 conditions, 14538 events. 8775/14538 cut-off events. For 709383/709393 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 106956 event pairs, 2225 based on Foata normal form. 20/14196 useless extension candidates. Maximal degree in co-relation 122245. Up to 11712 conditions per place. [2024-06-28 01:30:42,821 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 516 selfloop transitions, 95 changer transitions 0/621 dead transitions. [2024-06-28 01:30:42,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 621 transitions, 10522 flow [2024-06-28 01:30:42,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:42,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:42,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:30:42,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-06-28 01:30:42,823 INFO L175 Difference]: Start difference. First operand has 307 places, 552 transitions, 8648 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:30:42,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 621 transitions, 10522 flow [2024-06-28 01:30:44,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 621 transitions, 10155 flow, removed 90 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:44,611 INFO L231 Difference]: Finished difference. Result has 309 places, 576 transitions, 8927 flow [2024-06-28 01:30:44,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8281, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8927, PETRI_PLACES=309, PETRI_TRANSITIONS=576} [2024-06-28 01:30:44,612 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 256 predicate places. [2024-06-28 01:30:44,613 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 576 transitions, 8927 flow [2024-06-28 01:30:44,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:44,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:44,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:44,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:30:44,613 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:44,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:44,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1348541423, now seen corresponding path program 5 times [2024-06-28 01:30:44,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:44,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428864903] [2024-06-28 01:30:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:44,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:45,382 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 01:30:45,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428864903] [2024-06-28 01:30:45,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428864903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:45,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:45,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:45,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234429749] [2024-06-28 01:30:45,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:45,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:45,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:45,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:45,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:45,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:45,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 576 transitions, 8927 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:45,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:45,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:45,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:49,566 INFO L124 PetriNetUnfolderBase]: 9087/15038 cut-off events. [2024-06-28 01:30:49,566 INFO L125 PetriNetUnfolderBase]: For 748036/748046 co-relation queries the response was YES. [2024-06-28 01:30:49,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126944 conditions, 15038 events. 9087/15038 cut-off events. For 748036/748046 co-relation queries the response was YES. Maximal size of possible extension queue 669. Compared 111123 event pairs, 2406 based on Foata normal form. 22/14695 useless extension candidates. Maximal degree in co-relation 126800. Up to 12378 conditions per place. [2024-06-28 01:30:49,804 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 531 selfloop transitions, 83 changer transitions 0/624 dead transitions. [2024-06-28 01:30:49,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 624 transitions, 10605 flow [2024-06-28 01:30:49,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:49,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:49,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:30:49,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5271867612293144 [2024-06-28 01:30:49,806 INFO L175 Difference]: Start difference. First operand has 309 places, 576 transitions, 8927 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:30:49,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 624 transitions, 10605 flow [2024-06-28 01:30:51,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 624 transitions, 10389 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:51,734 INFO L231 Difference]: Finished difference. Result has 312 places, 580 transitions, 9037 flow [2024-06-28 01:30:51,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8711, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9037, PETRI_PLACES=312, PETRI_TRANSITIONS=580} [2024-06-28 01:30:51,735 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 259 predicate places. [2024-06-28 01:30:51,736 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 580 transitions, 9037 flow [2024-06-28 01:30:51,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:51,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:51,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:51,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:30:51,736 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:51,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:51,737 INFO L85 PathProgramCache]: Analyzing trace with hash 652826175, now seen corresponding path program 6 times [2024-06-28 01:30:51,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:51,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659173275] [2024-06-28 01:30:51,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:51,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:52,684 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 01:30:52,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:52,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659173275] [2024-06-28 01:30:52,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659173275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:52,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:52,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:30:52,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575060084] [2024-06-28 01:30:52,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:52,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:30:52,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:52,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:30:52,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:30:52,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:30:52,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 580 transitions, 9037 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:52,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:52,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:30:52,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:56,627 INFO L124 PetriNetUnfolderBase]: 9243/15379 cut-off events. [2024-06-28 01:30:56,627 INFO L125 PetriNetUnfolderBase]: For 779998/780004 co-relation queries the response was YES. [2024-06-28 01:30:56,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129877 conditions, 15379 events. 9243/15379 cut-off events. For 779998/780004 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 114781 event pairs, 2419 based on Foata normal form. 18/15007 useless extension candidates. Maximal degree in co-relation 129732. Up to 12426 conditions per place. [2024-06-28 01:30:57,198 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 514 selfloop transitions, 101 changer transitions 0/625 dead transitions. [2024-06-28 01:30:57,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 625 transitions, 10697 flow [2024-06-28 01:30:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:57,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:57,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 01:30:57,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-06-28 01:30:57,208 INFO L175 Difference]: Start difference. First operand has 312 places, 580 transitions, 9037 flow. Second operand 9 states and 222 transitions. [2024-06-28 01:30:57,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 625 transitions, 10697 flow [2024-06-28 01:30:59,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 625 transitions, 10485 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:59,015 INFO L231 Difference]: Finished difference. Result has 315 places, 582 transitions, 9145 flow [2024-06-28 01:30:59,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8825, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9145, PETRI_PLACES=315, PETRI_TRANSITIONS=582} [2024-06-28 01:30:59,016 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 262 predicate places. [2024-06-28 01:30:59,016 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 582 transitions, 9145 flow [2024-06-28 01:30:59,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:59,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:59,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:59,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:30:59,017 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:30:59,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:59,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2009327219, now seen corresponding path program 1 times [2024-06-28 01:30:59,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:59,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960054649] [2024-06-28 01:30:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:59,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:00,012 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 01:31:00,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:00,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960054649] [2024-06-28 01:31:00,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960054649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:00,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:00,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:31:00,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111636900] [2024-06-28 01:31:00,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:00,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:31:00,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:00,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:31:00,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:31:00,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-28 01:31:00,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 582 transitions, 9145 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:00,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:00,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-28 01:31:00,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand