./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.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/rfi002_tso.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/rfi002_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi002_tso.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 00:52:18,790 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:52:18,851 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:52:18,855 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:52:18,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:52:18,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:52:18,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:52:18,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:52:18,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:52:18,876 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:52:18,876 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:52:18,876 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:52:18,877 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:52:18,878 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:52:18,878 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:52:18,878 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:52:18,879 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:52:18,879 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:52:18,879 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:52:18,879 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:52:18,879 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:52:18,880 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:52:18,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:52:18,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:52:18,880 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:52:18,881 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:52:18,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:52:18,881 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:52:18,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:52:18,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:52:18,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:52:18,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:52:18,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:52:18,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:52:18,883 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:52:18,883 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:52:18,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:52:18,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:52:18,884 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:52:18,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:52:18,884 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:52:18,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:52:18,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:52:18,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 00:52:19,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:52:19,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:52:19,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:52:19,116 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:52:19,117 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:52:19,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi002_tso.yml/witness.yml [2024-06-28 00:52:19,333 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:52:19,334 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:52:19,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2024-06-28 00:52:20,434 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:52:20,667 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:52:20,668 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2024-06-28 00:52:20,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1110f9c4/4e24ebce89e84181b68fd01df2a7513e/FLAG854e51538 [2024-06-28 00:52:20,697 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1110f9c4/4e24ebce89e84181b68fd01df2a7513e [2024-06-28 00:52:20,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:52:20,700 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:52:20,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:52:20,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:52:20,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:52:20,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:52:19" (1/2) ... [2024-06-28 00:52:20,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6627a49d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:20, skipping insertion in model container [2024-06-28 00:52:20,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:52:19" (1/2) ... [2024-06-28 00:52:20,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6eb6a65e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:20, skipping insertion in model container [2024-06-28 00:52:20,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:52:20" (2/2) ... [2024-06-28 00:52:20,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6627a49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:20, skipping insertion in model container [2024-06-28 00:52:20,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:52:20" (2/2) ... [2024-06-28 00:52:20,710 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:52:20,785 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:52:20,786 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] ((((((((((((((((((((((((! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (((((((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) [2024-06-28 00:52:20,786 INFO L97 edCorrectnessWitness]: Location invariant before [L880-L880] ((((((((((((((((((((((((! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (((((((((((((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2)) [2024-06-28 00:52:20,787 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:52:20,787 INFO L106 edCorrectnessWitness]: ghost_update [L877-L877] multithreaded = 1; [2024-06-28 00:52:20,823 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:52:20,973 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/rfi002_tso.i[987,1000] [2024-06-28 00:52:21,234 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:52:21,249 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 00:52:21,278 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/rfi002_tso.i[987,1000] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:52:21,353 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:52:21,399 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:52:21,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21 WrapperNode [2024-06-28 00:52:21,400 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:52:21,401 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:52:21,401 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:52:21,401 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:52:21,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,474 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 211 [2024-06-28 00:52:21,477 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:52:21,478 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:52:21,478 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:52:21,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:52:21,488 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,504 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,528 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 00:52:21,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,534 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,542 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,555 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:52:21,578 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:52:21,578 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:52:21,578 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:52:21,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (1/1) ... [2024-06-28 00:52:21,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:52:21,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:52:21,626 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 00:52:21,635 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 00:52:21,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:52:21,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:52:21,660 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:52:21,661 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:52:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:52:21,661 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:52:21,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:52:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:52:21,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:52:21,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:52:21,663 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 00:52:21,781 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:52:21,783 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:52:22,124 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:52:22,125 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:52:22,309 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:52:22,310 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:52:22,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:52:22 BoogieIcfgContainer [2024-06-28 00:52:22,310 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:52:22,312 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:52:22,312 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:52:22,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:52:22,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:52:19" (1/4) ... [2024-06-28 00:52:22,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9919f8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:52:22, skipping insertion in model container [2024-06-28 00:52:22,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:52:20" (2/4) ... [2024-06-28 00:52:22,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9919f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:52:22, skipping insertion in model container [2024-06-28 00:52:22,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:21" (3/4) ... [2024-06-28 00:52:22,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9919f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:52:22, skipping insertion in model container [2024-06-28 00:52:22,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:52:22" (4/4) ... [2024-06-28 00:52:22,316 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2024-06-28 00:52:22,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:52:22,330 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 00:52:22,330 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:52:22,367 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:52:22,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 39 transitions, 86 flow [2024-06-28 00:52:22,421 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-06-28 00:52:22,421 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:52:22,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2024-06-28 00:52:22,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 39 transitions, 86 flow [2024-06-28 00:52:22,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 37 transitions, 80 flow [2024-06-28 00:52:22,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:52:22,464 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;@404bb671, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:52:22,465 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 00:52:22,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:52:22,468 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:52:22,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:52:22,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:22,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:52:22,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:22,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:22,494 INFO L85 PathProgramCache]: Analyzing trace with hash 516153351, now seen corresponding path program 1 times [2024-06-28 00:52:22,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:22,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139630331] [2024-06-28 00:52:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:22,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:23,921 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 00:52:23,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:23,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139630331] [2024-06-28 00:52:23,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139630331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:23,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:23,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:52:23,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802973743] [2024-06-28 00:52:23,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:23,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:52:23,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:23,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:52:23,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:52:23,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 00:52:23,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:23,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:23,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 00:52:23,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:24,275 INFO L124 PetriNetUnfolderBase]: 935/1530 cut-off events. [2024-06-28 00:52:24,276 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-28 00:52:24,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3072 conditions, 1530 events. 935/1530 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7808 event pairs, 431 based on Foata normal form. 71/1480 useless extension candidates. Maximal degree in co-relation 3061. Up to 1512 conditions per place. [2024-06-28 00:52:24,319 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 36 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2024-06-28 00:52:24,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 185 flow [2024-06-28 00:52:24,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:52:24,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:52:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-06-28 00:52:24,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6324786324786325 [2024-06-28 00:52:24,330 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 80 flow. Second operand 3 states and 74 transitions. [2024-06-28 00:52:24,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 185 flow [2024-06-28 00:52:24,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:24,333 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 104 flow [2024-06-28 00:52:24,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-28 00:52:24,337 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-28 00:52:24,337 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 104 flow [2024-06-28 00:52:24,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:24,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:24,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:24,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:52:24,338 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:24,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:24,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2102971374, now seen corresponding path program 1 times [2024-06-28 00:52:24,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:24,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895698207] [2024-06-28 00:52:24,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:24,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:25,274 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 00:52:25,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:25,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895698207] [2024-06-28 00:52:25,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895698207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:25,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:25,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:52:25,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602260384] [2024-06-28 00:52:25,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:25,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:52:25,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:52:25,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:52:25,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 00:52:25,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:25,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:25,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 00:52:25,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:25,598 INFO L124 PetriNetUnfolderBase]: 927/1704 cut-off events. [2024-06-28 00:52:25,598 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-06-28 00:52:25,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3518 conditions, 1704 events. 927/1704 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9778 event pairs, 459 based on Foata normal form. 4/1534 useless extension candidates. Maximal degree in co-relation 3506. Up to 1477 conditions per place. [2024-06-28 00:52:25,606 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 43 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2024-06-28 00:52:25,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 267 flow [2024-06-28 00:52:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:52:25,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:52:25,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-06-28 00:52:25,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 00:52:25,608 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 104 flow. Second operand 4 states and 91 transitions. [2024-06-28 00:52:25,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 267 flow [2024-06-28 00:52:25,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 60 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:25,610 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 172 flow [2024-06-28 00:52:25,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2024-06-28 00:52:25,611 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-06-28 00:52:25,611 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 172 flow [2024-06-28 00:52:25,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:25,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:25,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:25,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:52:25,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:25,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:25,612 INFO L85 PathProgramCache]: Analyzing trace with hash 742119663, now seen corresponding path program 1 times [2024-06-28 00:52:25,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:25,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521905874] [2024-06-28 00:52:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:25,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:25,698 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 00:52:25,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:25,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521905874] [2024-06-28 00:52:25,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521905874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:25,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:25,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:52:25,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515735609] [2024-06-28 00:52:25,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:25,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:52:25,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:25,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:52:25,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:52:25,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 39 [2024-06-28 00:52:25,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:25,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:25,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 39 [2024-06-28 00:52:25,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:25,878 INFO L124 PetriNetUnfolderBase]: 509/1018 cut-off events. [2024-06-28 00:52:25,878 INFO L125 PetriNetUnfolderBase]: For 241/255 co-relation queries the response was YES. [2024-06-28 00:52:25,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2159 conditions, 1018 events. 509/1018 cut-off events. For 241/255 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5831 event pairs, 116 based on Foata normal form. 7/941 useless extension candidates. Maximal degree in co-relation 2144. Up to 780 conditions per place. [2024-06-28 00:52:25,883 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 33 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-06-28 00:52:25,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 246 flow [2024-06-28 00:52:25,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:52:25,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:52:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-28 00:52:25,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 00:52:25,884 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 172 flow. Second operand 3 states and 78 transitions. [2024-06-28 00:52:25,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 246 flow [2024-06-28 00:52:25,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 244 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 00:52:25,886 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 154 flow [2024-06-28 00:52:25,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2024-06-28 00:52:25,887 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 6 predicate places. [2024-06-28 00:52:25,887 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 154 flow [2024-06-28 00:52:25,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:25,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:25,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:25,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:52:25,888 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:25,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:25,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1947288085, now seen corresponding path program 1 times [2024-06-28 00:52:25,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:25,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623220449] [2024-06-28 00:52:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:25,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:27,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:27,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623220449] [2024-06-28 00:52:27,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623220449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:27,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:27,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:52:27,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866105117] [2024-06-28 00:52:27,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:27,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:52:27,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:27,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:52:27,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:52:27,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 00:52:27,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:27,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:27,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 00:52:27,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:28,396 INFO L124 PetriNetUnfolderBase]: 827/1544 cut-off events. [2024-06-28 00:52:28,396 INFO L125 PetriNetUnfolderBase]: For 598/598 co-relation queries the response was YES. [2024-06-28 00:52:28,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3435 conditions, 1544 events. 827/1544 cut-off events. For 598/598 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8491 event pairs, 383 based on Foata normal form. 4/1428 useless extension candidates. Maximal degree in co-relation 3418. Up to 1264 conditions per place. [2024-06-28 00:52:28,403 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 55 selfloop transitions, 11 changer transitions 0/74 dead transitions. [2024-06-28 00:52:28,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 74 transitions, 370 flow [2024-06-28 00:52:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:52:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:52:28,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-28 00:52:28,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5846153846153846 [2024-06-28 00:52:28,405 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 154 flow. Second operand 5 states and 114 transitions. [2024-06-28 00:52:28,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 74 transitions, 370 flow [2024-06-28 00:52:28,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 74 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:28,407 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 204 flow [2024-06-28 00:52:28,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 00:52:28,408 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-28 00:52:28,408 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 204 flow [2024-06-28 00:52:28,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:28,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:28,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:28,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:52:28,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:28,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:28,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1530873630, now seen corresponding path program 1 times [2024-06-28 00:52:28,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:28,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947719219] [2024-06-28 00:52:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:28,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:28,461 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 00:52:28,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:28,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947719219] [2024-06-28 00:52:28,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947719219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:28,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:28,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:52:28,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523076029] [2024-06-28 00:52:28,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:28,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:52:28,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:28,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:52:28,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:52:28,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 39 [2024-06-28 00:52:28,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 204 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 00:52:28,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:28,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 39 [2024-06-28 00:52:28,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:28,615 INFO L124 PetriNetUnfolderBase]: 484/973 cut-off events. [2024-06-28 00:52:28,616 INFO L125 PetriNetUnfolderBase]: For 542/557 co-relation queries the response was YES. [2024-06-28 00:52:28,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 973 events. 484/973 cut-off events. For 542/557 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5547 event pairs, 102 based on Foata normal form. 8/957 useless extension candidates. Maximal degree in co-relation 2244. Up to 628 conditions per place. [2024-06-28 00:52:28,621 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 38 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-06-28 00:52:28,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 56 transitions, 308 flow [2024-06-28 00:52:28,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:52:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:52:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-28 00:52:28,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6581196581196581 [2024-06-28 00:52:28,623 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 204 flow. Second operand 3 states and 77 transitions. [2024-06-28 00:52:28,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 56 transitions, 308 flow [2024-06-28 00:52:28,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 297 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:28,625 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 195 flow [2024-06-28 00:52:28,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-28 00:52:28,626 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-28 00:52:28,626 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 195 flow [2024-06-28 00:52:28,627 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 00:52:28,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:28,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:28,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:52:28,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:28,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:28,628 INFO L85 PathProgramCache]: Analyzing trace with hash 212441485, now seen corresponding path program 1 times [2024-06-28 00:52:28,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:28,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923983073] [2024-06-28 00:52:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:28,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:29,520 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 00:52:29,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:29,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923983073] [2024-06-28 00:52:29,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923983073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:29,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:29,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:52:29,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731377905] [2024-06-28 00:52:29,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:29,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:52:29,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:29,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:52:29,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:52:29,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:29,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:29,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:29,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:29,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:30,076 INFO L124 PetriNetUnfolderBase]: 832/1524 cut-off events. [2024-06-28 00:52:30,076 INFO L125 PetriNetUnfolderBase]: For 980/980 co-relation queries the response was YES. [2024-06-28 00:52:30,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3726 conditions, 1524 events. 832/1524 cut-off events. For 980/980 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8059 event pairs, 584 based on Foata normal form. 1/1474 useless extension candidates. Maximal degree in co-relation 3705. Up to 1340 conditions per place. [2024-06-28 00:52:30,084 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 48 selfloop transitions, 9 changer transitions 2/65 dead transitions. [2024-06-28 00:52:30,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 381 flow [2024-06-28 00:52:30,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:30,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-28 00:52:30,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 00:52:30,086 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 195 flow. Second operand 6 states and 96 transitions. [2024-06-28 00:52:30,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 381 flow [2024-06-28 00:52:30,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:30,091 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 269 flow [2024-06-28 00:52:30,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=269, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-06-28 00:52:30,093 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2024-06-28 00:52:30,093 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 269 flow [2024-06-28 00:52:30,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:30,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:30,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:30,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:52:30,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:30,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:30,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1293201708, now seen corresponding path program 1 times [2024-06-28 00:52:30,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:30,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170847905] [2024-06-28 00:52:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:30,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:32,257 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 00:52:32,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:32,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170847905] [2024-06-28 00:52:32,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170847905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:32,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:32,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529735189] [2024-06-28 00:52:32,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:32,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:32,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:32,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2024-06-28 00:52:32,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 269 flow. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:32,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:32,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2024-06-28 00:52:32,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:32,875 INFO L124 PetriNetUnfolderBase]: 632/1217 cut-off events. [2024-06-28 00:52:32,876 INFO L125 PetriNetUnfolderBase]: For 1142/1146 co-relation queries the response was YES. [2024-06-28 00:52:32,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3152 conditions, 1217 events. 632/1217 cut-off events. For 1142/1146 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6491 event pairs, 218 based on Foata normal form. 8/1168 useless extension candidates. Maximal degree in co-relation 3128. Up to 930 conditions per place. [2024-06-28 00:52:32,883 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 56 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2024-06-28 00:52:32,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 479 flow [2024-06-28 00:52:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:32,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-28 00:52:32,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299145299145299 [2024-06-28 00:52:32,886 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 269 flow. Second operand 6 states and 124 transitions. [2024-06-28 00:52:32,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 479 flow [2024-06-28 00:52:32,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 475 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:32,890 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 291 flow [2024-06-28 00:52:32,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2024-06-28 00:52:32,892 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-06-28 00:52:32,892 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 291 flow [2024-06-28 00:52:32,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:32,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:32,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:32,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:52:32,893 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:32,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:32,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2039361620, now seen corresponding path program 1 times [2024-06-28 00:52:32,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:32,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692195466] [2024-06-28 00:52:32,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:32,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:33,934 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 00:52:33,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:33,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692195466] [2024-06-28 00:52:33,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692195466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:33,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:33,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:33,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701490267] [2024-06-28 00:52:33,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:33,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:33,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:33,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:33,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:33,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:33,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 291 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:33,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:33,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:33,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:34,342 INFO L124 PetriNetUnfolderBase]: 732/1368 cut-off events. [2024-06-28 00:52:34,343 INFO L125 PetriNetUnfolderBase]: For 1730/1730 co-relation queries the response was YES. [2024-06-28 00:52:34,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3678 conditions, 1368 events. 732/1368 cut-off events. For 1730/1730 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7241 event pairs, 508 based on Foata normal form. 1/1317 useless extension candidates. Maximal degree in co-relation 3651. Up to 1175 conditions per place. [2024-06-28 00:52:34,352 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 53 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2024-06-28 00:52:34,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 475 flow [2024-06-28 00:52:34,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-06-28 00:52:34,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188034188034188 [2024-06-28 00:52:34,355 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 291 flow. Second operand 6 states and 98 transitions. [2024-06-28 00:52:34,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 475 flow [2024-06-28 00:52:34,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 433 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:52:34,363 INFO L231 Difference]: Finished difference. Result has 64 places, 56 transitions, 312 flow [2024-06-28 00:52:34,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=64, PETRI_TRANSITIONS=56} [2024-06-28 00:52:34,366 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-06-28 00:52:34,366 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 56 transitions, 312 flow [2024-06-28 00:52:34,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:34,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:34,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:34,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:52:34,367 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:34,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:34,367 INFO L85 PathProgramCache]: Analyzing trace with hash 933168646, now seen corresponding path program 1 times [2024-06-28 00:52:34,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:34,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741304297] [2024-06-28 00:52:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:34,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:35,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:35,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741304297] [2024-06-28 00:52:35,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741304297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:35,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:35,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:35,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045924211] [2024-06-28 00:52:35,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:35,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:35,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:35,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:35,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:35,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 56 transitions, 312 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:35,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:35,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:35,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:35,851 INFO L124 PetriNetUnfolderBase]: 763/1404 cut-off events. [2024-06-28 00:52:35,851 INFO L125 PetriNetUnfolderBase]: For 2006/2012 co-relation queries the response was YES. [2024-06-28 00:52:35,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3916 conditions, 1404 events. 763/1404 cut-off events. For 2006/2012 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 7349 event pairs, 264 based on Foata normal form. 6/1358 useless extension candidates. Maximal degree in co-relation 3887. Up to 1180 conditions per place. [2024-06-28 00:52:35,858 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 60 selfloop transitions, 23 changer transitions 0/89 dead transitions. [2024-06-28 00:52:35,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 591 flow [2024-06-28 00:52:35,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:35,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 00:52:35,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43956043956043955 [2024-06-28 00:52:35,862 INFO L175 Difference]: Start difference. First operand has 64 places, 56 transitions, 312 flow. Second operand 7 states and 120 transitions. [2024-06-28 00:52:35,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 591 flow [2024-06-28 00:52:35,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 570 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:35,866 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 430 flow [2024-06-28 00:52:35,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=430, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2024-06-28 00:52:35,867 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-06-28 00:52:35,867 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 430 flow [2024-06-28 00:52:35,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:35,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:35,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:35,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:52:35,870 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:35,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1197594216, now seen corresponding path program 2 times [2024-06-28 00:52:35,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:35,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165853639] [2024-06-28 00:52:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:35,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:36,830 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 00:52:36,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:36,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165853639] [2024-06-28 00:52:36,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165853639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:36,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:36,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:36,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266120465] [2024-06-28 00:52:36,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:36,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:36,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:36,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:36,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:36,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:36,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 430 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:36,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:36,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:36,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:37,487 INFO L124 PetriNetUnfolderBase]: 783/1434 cut-off events. [2024-06-28 00:52:37,488 INFO L125 PetriNetUnfolderBase]: For 3315/3321 co-relation queries the response was YES. [2024-06-28 00:52:37,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4624 conditions, 1434 events. 783/1434 cut-off events. For 3315/3321 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7502 event pairs, 261 based on Foata normal form. 6/1388 useless extension candidates. Maximal degree in co-relation 4592. Up to 1192 conditions per place. [2024-06-28 00:52:37,499 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 59 selfloop transitions, 24 changer transitions 0/89 dead transitions. [2024-06-28 00:52:37,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 690 flow [2024-06-28 00:52:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 00:52:37,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-28 00:52:37,502 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 430 flow. Second operand 6 states and 105 transitions. [2024-06-28 00:52:37,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 690 flow [2024-06-28 00:52:37,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 89 transitions, 658 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:37,509 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 482 flow [2024-06-28 00:52:37,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=482, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-06-28 00:52:37,511 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2024-06-28 00:52:37,511 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 482 flow [2024-06-28 00:52:37,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:37,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:37,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:37,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:52:37,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:37,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:37,512 INFO L85 PathProgramCache]: Analyzing trace with hash -307390706, now seen corresponding path program 3 times [2024-06-28 00:52:37,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:37,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714324780] [2024-06-28 00:52:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:37,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:37,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:38,455 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 00:52:38,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:38,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714324780] [2024-06-28 00:52:38,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714324780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:38,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:38,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162741888] [2024-06-28 00:52:38,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:38,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:38,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:38,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:38,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:38,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:38,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:38,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:38,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:38,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:38,871 INFO L124 PetriNetUnfolderBase]: 793/1471 cut-off events. [2024-06-28 00:52:38,871 INFO L125 PetriNetUnfolderBase]: For 4328/4334 co-relation queries the response was YES. [2024-06-28 00:52:38,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4976 conditions, 1471 events. 793/1471 cut-off events. For 4328/4334 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7788 event pairs, 262 based on Foata normal form. 6/1416 useless extension candidates. Maximal degree in co-relation 4942. Up to 1167 conditions per place. [2024-06-28 00:52:38,881 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 65 selfloop transitions, 28 changer transitions 0/99 dead transitions. [2024-06-28 00:52:38,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 99 transitions, 844 flow [2024-06-28 00:52:38,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:38,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 00:52:38,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44871794871794873 [2024-06-28 00:52:38,883 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 482 flow. Second operand 6 states and 105 transitions. [2024-06-28 00:52:38,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 99 transitions, 844 flow [2024-06-28 00:52:38,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 774 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:38,888 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 583 flow [2024-06-28 00:52:38,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=583, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-06-28 00:52:38,889 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-06-28 00:52:38,889 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 583 flow [2024-06-28 00:52:38,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:38,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:38,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:38,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:52:38,890 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:38,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:38,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1204301128, now seen corresponding path program 1 times [2024-06-28 00:52:38,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:38,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997003426] [2024-06-28 00:52:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:38,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:40,225 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 00:52:40,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:40,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997003426] [2024-06-28 00:52:40,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997003426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:40,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:40,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:40,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245834132] [2024-06-28 00:52:40,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:40,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:40,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:40,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:40,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:40,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:40,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 583 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:40,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:40,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:40,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:40,914 INFO L124 PetriNetUnfolderBase]: 796/1480 cut-off events. [2024-06-28 00:52:40,928 INFO L125 PetriNetUnfolderBase]: For 4536/4536 co-relation queries the response was YES. [2024-06-28 00:52:40,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 1480 events. 796/1480 cut-off events. For 4536/4536 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7827 event pairs, 441 based on Foata normal form. 1/1424 useless extension candidates. Maximal degree in co-relation 5063. Up to 1259 conditions per place. [2024-06-28 00:52:40,945 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 83 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-28 00:52:40,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 102 transitions, 865 flow [2024-06-28 00:52:40,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 00:52:40,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2024-06-28 00:52:40,949 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 583 flow. Second operand 7 states and 114 transitions. [2024-06-28 00:52:40,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 102 transitions, 865 flow [2024-06-28 00:52:40,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 102 transitions, 819 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:40,970 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 588 flow [2024-06-28 00:52:40,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=588, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2024-06-28 00:52:40,970 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 38 predicate places. [2024-06-28 00:52:40,971 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 588 flow [2024-06-28 00:52:40,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:40,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:40,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:40,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:52:40,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:40,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:40,972 INFO L85 PathProgramCache]: Analyzing trace with hash 990368354, now seen corresponding path program 1 times [2024-06-28 00:52:40,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:40,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726260021] [2024-06-28 00:52:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:40,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:41,913 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 00:52:41,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:41,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726260021] [2024-06-28 00:52:41,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726260021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:41,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:41,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:41,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797048918] [2024-06-28 00:52:41,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:41,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:41,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:41,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:41,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:41,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:41,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:41,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:41,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:41,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:42,530 INFO L124 PetriNetUnfolderBase]: 821/1530 cut-off events. [2024-06-28 00:52:42,531 INFO L125 PetriNetUnfolderBase]: For 4913/4913 co-relation queries the response was YES. [2024-06-28 00:52:42,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5366 conditions, 1530 events. 821/1530 cut-off events. For 4913/4913 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8158 event pairs, 401 based on Foata normal form. 1/1471 useless extension candidates. Maximal degree in co-relation 5329. Up to 1251 conditions per place. [2024-06-28 00:52:42,540 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 79 selfloop transitions, 27 changer transitions 0/112 dead transitions. [2024-06-28 00:52:42,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 112 transitions, 952 flow [2024-06-28 00:52:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 00:52:42,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432234432234432 [2024-06-28 00:52:42,542 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 588 flow. Second operand 7 states and 121 transitions. [2024-06-28 00:52:42,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 112 transitions, 952 flow [2024-06-28 00:52:42,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 112 transitions, 921 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:52:42,551 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 703 flow [2024-06-28 00:52:42,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-06-28 00:52:42,552 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 41 predicate places. [2024-06-28 00:52:42,552 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 703 flow [2024-06-28 00:52:42,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:42,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:42,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:42,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:52:42,553 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:42,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:42,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1137694369, now seen corresponding path program 1 times [2024-06-28 00:52:42,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:42,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112267904] [2024-06-28 00:52:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:42,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:43,668 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 00:52:43,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:43,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112267904] [2024-06-28 00:52:43,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112267904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:43,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:43,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:43,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040914884] [2024-06-28 00:52:43,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:43,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:43,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:43,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:43,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:43,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:43,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 703 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:43,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:43,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:43,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:44,331 INFO L124 PetriNetUnfolderBase]: 841/1544 cut-off events. [2024-06-28 00:52:44,331 INFO L125 PetriNetUnfolderBase]: For 5820/5820 co-relation queries the response was YES. [2024-06-28 00:52:44,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5671 conditions, 1544 events. 841/1544 cut-off events. For 5820/5820 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 8122 event pairs, 299 based on Foata normal form. 2/1486 useless extension candidates. Maximal degree in co-relation 5632. Up to 1283 conditions per place. [2024-06-28 00:52:44,339 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 94 selfloop transitions, 25 changer transitions 0/125 dead transitions. [2024-06-28 00:52:44,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 125 transitions, 1156 flow [2024-06-28 00:52:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 00:52:44,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-06-28 00:52:44,341 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 703 flow. Second operand 8 states and 132 transitions. [2024-06-28 00:52:44,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 125 transitions, 1156 flow [2024-06-28 00:52:44,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 1101 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:44,348 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 886 flow [2024-06-28 00:52:44,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=886, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2024-06-28 00:52:44,349 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-28 00:52:44,349 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 886 flow [2024-06-28 00:52:44,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:44,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:44,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:44,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:52:44,350 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:44,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash -131864376, now seen corresponding path program 2 times [2024-06-28 00:52:44,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:44,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302787247] [2024-06-28 00:52:44,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:44,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:45,707 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 00:52:45,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:45,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302787247] [2024-06-28 00:52:45,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302787247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:45,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:45,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:45,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348634777] [2024-06-28 00:52:45,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:45,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:45,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:45,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:45,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:45,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:45,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 886 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:45,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:45,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:45,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:46,302 INFO L124 PetriNetUnfolderBase]: 839/1551 cut-off events. [2024-06-28 00:52:46,302 INFO L125 PetriNetUnfolderBase]: For 7179/7179 co-relation queries the response was YES. [2024-06-28 00:52:46,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6065 conditions, 1551 events. 839/1551 cut-off events. For 7179/7179 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8210 event pairs, 388 based on Foata normal form. 1/1494 useless extension candidates. Maximal degree in co-relation 6022. Up to 1249 conditions per place. [2024-06-28 00:52:46,311 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 79 selfloop transitions, 36 changer transitions 0/121 dead transitions. [2024-06-28 00:52:46,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 121 transitions, 1204 flow [2024-06-28 00:52:46,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:46,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 00:52:46,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:52:46,313 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 886 flow. Second operand 6 states and 104 transitions. [2024-06-28 00:52:46,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 121 transitions, 1204 flow [2024-06-28 00:52:46,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 121 transitions, 1153 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:46,324 INFO L231 Difference]: Finished difference. Result has 94 places, 105 transitions, 954 flow [2024-06-28 00:52:46,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=954, PETRI_PLACES=94, PETRI_TRANSITIONS=105} [2024-06-28 00:52:46,324 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 51 predicate places. [2024-06-28 00:52:46,324 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 105 transitions, 954 flow [2024-06-28 00:52:46,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:46,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:46,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:46,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:52:46,325 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:46,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:46,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1110372975, now seen corresponding path program 2 times [2024-06-28 00:52:46,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:46,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532050590] [2024-06-28 00:52:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:46,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:47,552 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 00:52:47,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:47,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532050590] [2024-06-28 00:52:47,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532050590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:47,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:47,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:47,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333102631] [2024-06-28 00:52:47,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:47,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:47,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:47,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:47,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:47,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:47,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 105 transitions, 954 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:47,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:47,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:47,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:48,117 INFO L124 PetriNetUnfolderBase]: 859/1577 cut-off events. [2024-06-28 00:52:48,118 INFO L125 PetriNetUnfolderBase]: For 8390/8390 co-relation queries the response was YES. [2024-06-28 00:52:48,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6314 conditions, 1577 events. 859/1577 cut-off events. For 8390/8390 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8343 event pairs, 294 based on Foata normal form. 2/1517 useless extension candidates. Maximal degree in co-relation 6269. Up to 1275 conditions per place. [2024-06-28 00:52:48,125 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 95 selfloop transitions, 29 changer transitions 0/130 dead transitions. [2024-06-28 00:52:48,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 130 transitions, 1344 flow [2024-06-28 00:52:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:48,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:48,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 00:52:48,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 00:52:48,127 INFO L175 Difference]: Start difference. First operand has 94 places, 105 transitions, 954 flow. Second operand 7 states and 117 transitions. [2024-06-28 00:52:48,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 130 transitions, 1344 flow [2024-06-28 00:52:48,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 1283 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:48,137 INFO L231 Difference]: Finished difference. Result has 98 places, 111 transitions, 1045 flow [2024-06-28 00:52:48,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1045, PETRI_PLACES=98, PETRI_TRANSITIONS=111} [2024-06-28 00:52:48,138 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-06-28 00:52:48,138 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 111 transitions, 1045 flow [2024-06-28 00:52:48,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:48,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:48,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:48,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:52:48,138 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:48,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:48,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1251080407, now seen corresponding path program 3 times [2024-06-28 00:52:48,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:48,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613602938] [2024-06-28 00:52:48,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:48,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:49,387 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 00:52:49,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:49,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613602938] [2024-06-28 00:52:49,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613602938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:49,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:49,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:49,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285586471] [2024-06-28 00:52:49,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:49,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:49,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:49,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:49,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:49,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:49,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 111 transitions, 1045 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:49,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:49,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:49,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:49,935 INFO L124 PetriNetUnfolderBase]: 883/1612 cut-off events. [2024-06-28 00:52:49,936 INFO L125 PetriNetUnfolderBase]: For 9664/9664 co-relation queries the response was YES. [2024-06-28 00:52:49,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6797 conditions, 1612 events. 883/1612 cut-off events. For 9664/9664 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8576 event pairs, 274 based on Foata normal form. 2/1552 useless extension candidates. Maximal degree in co-relation 6750. Up to 1218 conditions per place. [2024-06-28 00:52:49,949 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 98 selfloop transitions, 42 changer transitions 0/146 dead transitions. [2024-06-28 00:52:49,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 146 transitions, 1591 flow [2024-06-28 00:52:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:49,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 00:52:49,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43956043956043955 [2024-06-28 00:52:49,951 INFO L175 Difference]: Start difference. First operand has 98 places, 111 transitions, 1045 flow. Second operand 7 states and 120 transitions. [2024-06-28 00:52:49,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 146 transitions, 1591 flow [2024-06-28 00:52:49,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 146 transitions, 1507 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:49,963 INFO L231 Difference]: Finished difference. Result has 103 places, 126 transitions, 1258 flow [2024-06-28 00:52:49,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1258, PETRI_PLACES=103, PETRI_TRANSITIONS=126} [2024-06-28 00:52:49,964 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-06-28 00:52:49,964 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 126 transitions, 1258 flow [2024-06-28 00:52:49,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:49,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:49,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:49,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:52:49,965 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:49,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:49,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1321707091, now seen corresponding path program 4 times [2024-06-28 00:52:49,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:49,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698908370] [2024-06-28 00:52:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:49,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:51,245 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 00:52:51,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:51,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698908370] [2024-06-28 00:52:51,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698908370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:51,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:51,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:51,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955398088] [2024-06-28 00:52:51,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:51,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:51,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:51,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:51,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 126 transitions, 1258 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:51,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:51,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:51,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:51,828 INFO L124 PetriNetUnfolderBase]: 891/1625 cut-off events. [2024-06-28 00:52:51,828 INFO L125 PetriNetUnfolderBase]: For 10447/10447 co-relation queries the response was YES. [2024-06-28 00:52:51,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7105 conditions, 1625 events. 891/1625 cut-off events. For 10447/10447 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8610 event pairs, 296 based on Foata normal form. 2/1564 useless extension candidates. Maximal degree in co-relation 7055. Up to 1309 conditions per place. [2024-06-28 00:52:51,839 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 107 selfloop transitions, 37 changer transitions 0/150 dead transitions. [2024-06-28 00:52:51,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 150 transitions, 1706 flow [2024-06-28 00:52:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 00:52:51,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 00:52:51,841 INFO L175 Difference]: Start difference. First operand has 103 places, 126 transitions, 1258 flow. Second operand 8 states and 128 transitions. [2024-06-28 00:52:51,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 150 transitions, 1706 flow [2024-06-28 00:52:51,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 150 transitions, 1651 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:51,856 INFO L231 Difference]: Finished difference. Result has 109 places, 131 transitions, 1358 flow [2024-06-28 00:52:51,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1358, PETRI_PLACES=109, PETRI_TRANSITIONS=131} [2024-06-28 00:52:51,857 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-06-28 00:52:51,857 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 131 transitions, 1358 flow [2024-06-28 00:52:51,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:51,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:51,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:51,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:52:51,858 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:51,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:51,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1251092311, now seen corresponding path program 1 times [2024-06-28 00:52:51,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:51,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951695998] [2024-06-28 00:52:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:51,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:53,720 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 00:52:53,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:53,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951695998] [2024-06-28 00:52:53,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951695998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:53,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:53,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:53,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241903566] [2024-06-28 00:52:53,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:53,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:53,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:53,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:53,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:53,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 131 transitions, 1358 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:52:53,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:53,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:53,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:54,343 INFO L124 PetriNetUnfolderBase]: 894/1638 cut-off events. [2024-06-28 00:52:54,344 INFO L125 PetriNetUnfolderBase]: For 11212/11212 co-relation queries the response was YES. [2024-06-28 00:52:54,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7241 conditions, 1638 events. 894/1638 cut-off events. For 11212/11212 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8757 event pairs, 438 based on Foata normal form. 1/1579 useless extension candidates. Maximal degree in co-relation 7189. Up to 1395 conditions per place. [2024-06-28 00:52:54,355 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 135 selfloop transitions, 18 changer transitions 0/159 dead transitions. [2024-06-28 00:52:54,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 159 transitions, 1825 flow [2024-06-28 00:52:54,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:54,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:54,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 00:52:54,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 00:52:54,360 INFO L175 Difference]: Start difference. First operand has 109 places, 131 transitions, 1358 flow. Second operand 8 states and 130 transitions. [2024-06-28 00:52:54,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 159 transitions, 1825 flow [2024-06-28 00:52:54,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 159 transitions, 1756 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:54,413 INFO L231 Difference]: Finished difference. Result has 114 places, 134 transitions, 1361 flow [2024-06-28 00:52:54,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1361, PETRI_PLACES=114, PETRI_TRANSITIONS=134} [2024-06-28 00:52:54,413 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-06-28 00:52:54,413 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 134 transitions, 1361 flow [2024-06-28 00:52:54,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:52:54,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:54,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:54,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:52:54,414 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:54,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:54,414 INFO L85 PathProgramCache]: Analyzing trace with hash -643904313, now seen corresponding path program 1 times [2024-06-28 00:52:54,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:54,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644629651] [2024-06-28 00:52:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:54,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:55,599 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 00:52:55,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:55,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644629651] [2024-06-28 00:52:55,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644629651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:55,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:55,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:55,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837334728] [2024-06-28 00:52:55,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:55,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:55,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:55,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:55,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:55,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:55,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 134 transitions, 1361 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:55,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:55,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:55,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:56,322 INFO L124 PetriNetUnfolderBase]: 948/1727 cut-off events. [2024-06-28 00:52:56,322 INFO L125 PetriNetUnfolderBase]: For 11932/11932 co-relation queries the response was YES. [2024-06-28 00:52:56,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7661 conditions, 1727 events. 948/1727 cut-off events. For 11932/11932 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9222 event pairs, 302 based on Foata normal form. 2/1667 useless extension candidates. Maximal degree in co-relation 7607. Up to 1361 conditions per place. [2024-06-28 00:52:56,334 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 139 selfloop transitions, 31 changer transitions 0/176 dead transitions. [2024-06-28 00:52:56,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 176 transitions, 1915 flow [2024-06-28 00:52:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 00:52:56,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46474358974358976 [2024-06-28 00:52:56,336 INFO L175 Difference]: Start difference. First operand has 114 places, 134 transitions, 1361 flow. Second operand 8 states and 145 transitions. [2024-06-28 00:52:56,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 176 transitions, 1915 flow [2024-06-28 00:52:56,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 176 transitions, 1865 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:52:56,352 INFO L231 Difference]: Finished difference. Result has 117 places, 140 transitions, 1432 flow [2024-06-28 00:52:56,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1432, PETRI_PLACES=117, PETRI_TRANSITIONS=140} [2024-06-28 00:52:56,352 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2024-06-28 00:52:56,353 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 140 transitions, 1432 flow [2024-06-28 00:52:56,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:56,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:56,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:56,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:52:56,353 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:56,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:56,354 INFO L85 PathProgramCache]: Analyzing trace with hash 601529011, now seen corresponding path program 2 times [2024-06-28 00:52:56,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:56,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406689936] [2024-06-28 00:52:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:56,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:57,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:57,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:57,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406689936] [2024-06-28 00:52:57,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406689936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:57,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:57,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:57,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960241338] [2024-06-28 00:52:57,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:57,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:57,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:57,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:57,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:57,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:57,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 140 transitions, 1432 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:52:57,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:57,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:57,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:58,496 INFO L124 PetriNetUnfolderBase]: 1034/1888 cut-off events. [2024-06-28 00:52:58,496 INFO L125 PetriNetUnfolderBase]: For 14092/14092 co-relation queries the response was YES. [2024-06-28 00:52:58,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8608 conditions, 1888 events. 1034/1888 cut-off events. For 14092/14092 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10517 event pairs, 423 based on Foata normal form. 2/1819 useless extension candidates. Maximal degree in co-relation 8552. Up to 1521 conditions per place. [2024-06-28 00:52:58,509 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 138 selfloop transitions, 39 changer transitions 0/183 dead transitions. [2024-06-28 00:52:58,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 183 transitions, 2041 flow [2024-06-28 00:52:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:52:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:52:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 00:52:58,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43304843304843305 [2024-06-28 00:52:58,510 INFO L175 Difference]: Start difference. First operand has 117 places, 140 transitions, 1432 flow. Second operand 9 states and 152 transitions. [2024-06-28 00:52:58,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 183 transitions, 2041 flow [2024-06-28 00:52:58,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 183 transitions, 1957 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 00:52:58,528 INFO L231 Difference]: Finished difference. Result has 123 places, 152 transitions, 1586 flow [2024-06-28 00:52:58,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1586, PETRI_PLACES=123, PETRI_TRANSITIONS=152} [2024-06-28 00:52:58,529 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 80 predicate places. [2024-06-28 00:52:58,529 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 152 transitions, 1586 flow [2024-06-28 00:52:58,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:52:58,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:58,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:58,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:52:58,530 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:52:58,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash 601534839, now seen corresponding path program 1 times [2024-06-28 00:52:58,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:58,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584160490] [2024-06-28 00:52:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:58,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:59,774 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 00:52:59,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:59,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584160490] [2024-06-28 00:52:59,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584160490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:59,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:59,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:59,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257565882] [2024-06-28 00:52:59,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:59,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:59,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:59,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:59,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:59,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:52:59,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 152 transitions, 1586 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:52:59,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:59,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:52:59,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:00,450 INFO L124 PetriNetUnfolderBase]: 1044/1903 cut-off events. [2024-06-28 00:53:00,450 INFO L125 PetriNetUnfolderBase]: For 15528/15528 co-relation queries the response was YES. [2024-06-28 00:53:00,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9056 conditions, 1903 events. 1044/1903 cut-off events. For 15528/15528 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10585 event pairs, 426 based on Foata normal form. 1/1833 useless extension candidates. Maximal degree in co-relation 8997. Up to 1581 conditions per place. [2024-06-28 00:53:00,463 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 140 selfloop transitions, 33 changer transitions 0/179 dead transitions. [2024-06-28 00:53:00,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 179 transitions, 2092 flow [2024-06-28 00:53:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 00:53:00,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42628205128205127 [2024-06-28 00:53:00,465 INFO L175 Difference]: Start difference. First operand has 123 places, 152 transitions, 1586 flow. Second operand 8 states and 133 transitions. [2024-06-28 00:53:00,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 179 transitions, 2092 flow [2024-06-28 00:53:00,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 179 transitions, 2000 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:00,486 INFO L231 Difference]: Finished difference. Result has 127 places, 157 transitions, 1646 flow [2024-06-28 00:53:00,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1646, PETRI_PLACES=127, PETRI_TRANSITIONS=157} [2024-06-28 00:53:00,486 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-06-28 00:53:00,486 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 157 transitions, 1646 flow [2024-06-28 00:53:00,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:00,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:00,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:00,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:53:00,487 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:00,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:00,487 INFO L85 PathProgramCache]: Analyzing trace with hash 601534591, now seen corresponding path program 3 times [2024-06-28 00:53:00,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:00,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15830880] [2024-06-28 00:53:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:00,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:01,743 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 00:53:01,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:01,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15830880] [2024-06-28 00:53:01,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15830880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:01,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:01,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:01,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978810399] [2024-06-28 00:53:01,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:01,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:01,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:01,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:01,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:01,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:01,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 157 transitions, 1646 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:01,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:01,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:01,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:02,553 INFO L124 PetriNetUnfolderBase]: 1096/1992 cut-off events. [2024-06-28 00:53:02,553 INFO L125 PetriNetUnfolderBase]: For 16865/16865 co-relation queries the response was YES. [2024-06-28 00:53:02,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9521 conditions, 1992 events. 1096/1992 cut-off events. For 16865/16865 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11108 event pairs, 272 based on Foata normal form. 2/1919 useless extension candidates. Maximal degree in co-relation 9460. Up to 1417 conditions per place. [2024-06-28 00:53:02,565 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 145 selfloop transitions, 53 changer transitions 0/204 dead transitions. [2024-06-28 00:53:02,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 204 transitions, 2359 flow [2024-06-28 00:53:02,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:02,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:02,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 00:53:02,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2024-06-28 00:53:02,566 INFO L175 Difference]: Start difference. First operand has 127 places, 157 transitions, 1646 flow. Second operand 8 states and 148 transitions. [2024-06-28 00:53:02,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 204 transitions, 2359 flow [2024-06-28 00:53:02,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 204 transitions, 2310 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:02,588 INFO L231 Difference]: Finished difference. Result has 134 places, 165 transitions, 1839 flow [2024-06-28 00:53:02,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1839, PETRI_PLACES=134, PETRI_TRANSITIONS=165} [2024-06-28 00:53:02,589 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-28 00:53:02,589 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 165 transitions, 1839 flow [2024-06-28 00:53:02,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:02,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:02,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:02,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:53:02,589 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:02,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:02,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1961599103, now seen corresponding path program 1 times [2024-06-28 00:53:02,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:02,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894578689] [2024-06-28 00:53:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:02,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:04,089 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 00:53:04,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:04,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894578689] [2024-06-28 00:53:04,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894578689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:04,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:04,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:04,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049240775] [2024-06-28 00:53:04,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:04,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:04,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:04,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:04,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:04,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:04,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 165 transitions, 1839 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:04,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:04,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:04,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:04,809 INFO L124 PetriNetUnfolderBase]: 1116/2033 cut-off events. [2024-06-28 00:53:04,809 INFO L125 PetriNetUnfolderBase]: For 19743/19743 co-relation queries the response was YES. [2024-06-28 00:53:04,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10193 conditions, 2033 events. 1116/2033 cut-off events. For 19743/19743 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11648 event pairs, 371 based on Foata normal form. 2/1957 useless extension candidates. Maximal degree in co-relation 10129. Up to 1685 conditions per place. [2024-06-28 00:53:04,824 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 159 selfloop transitions, 30 changer transitions 0/195 dead transitions. [2024-06-28 00:53:04,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 195 transitions, 2389 flow [2024-06-28 00:53:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 00:53:04,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42165242165242167 [2024-06-28 00:53:04,825 INFO L175 Difference]: Start difference. First operand has 134 places, 165 transitions, 1839 flow. Second operand 9 states and 148 transitions. [2024-06-28 00:53:04,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 195 transitions, 2389 flow [2024-06-28 00:53:04,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 195 transitions, 2359 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 00:53:04,856 INFO L231 Difference]: Finished difference. Result has 141 places, 168 transitions, 1915 flow [2024-06-28 00:53:04,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1915, PETRI_PLACES=141, PETRI_TRANSITIONS=168} [2024-06-28 00:53:04,862 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-06-28 00:53:04,862 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 168 transitions, 1915 flow [2024-06-28 00:53:04,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:04,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:04,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:04,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:53:04,863 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:04,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:04,864 INFO L85 PathProgramCache]: Analyzing trace with hash 828157051, now seen corresponding path program 4 times [2024-06-28 00:53:04,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:04,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381600054] [2024-06-28 00:53:04,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:04,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:06,432 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 00:53:06,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:06,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381600054] [2024-06-28 00:53:06,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381600054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:06,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:06,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:06,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506477677] [2024-06-28 00:53:06,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:06,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:06,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:06,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:06,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:06,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 168 transitions, 1915 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:06,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:06,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:06,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:07,265 INFO L124 PetriNetUnfolderBase]: 1142/2066 cut-off events. [2024-06-28 00:53:07,265 INFO L125 PetriNetUnfolderBase]: For 21432/21432 co-relation queries the response was YES. [2024-06-28 00:53:07,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10664 conditions, 2066 events. 1142/2066 cut-off events. For 21432/21432 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11530 event pairs, 324 based on Foata normal form. 2/1994 useless extension candidates. Maximal degree in co-relation 10598. Up to 1525 conditions per place. [2024-06-28 00:53:07,284 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 149 selfloop transitions, 45 changer transitions 0/200 dead transitions. [2024-06-28 00:53:07,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 200 transitions, 2496 flow [2024-06-28 00:53:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:07,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:07,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 00:53:07,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652014652014652 [2024-06-28 00:53:07,286 INFO L175 Difference]: Start difference. First operand has 141 places, 168 transitions, 1915 flow. Second operand 7 states and 127 transitions. [2024-06-28 00:53:07,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 200 transitions, 2496 flow [2024-06-28 00:53:07,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 200 transitions, 2423 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:07,319 INFO L231 Difference]: Finished difference. Result has 143 places, 171 transitions, 1992 flow [2024-06-28 00:53:07,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1992, PETRI_PLACES=143, PETRI_TRANSITIONS=171} [2024-06-28 00:53:07,319 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 100 predicate places. [2024-06-28 00:53:07,319 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 171 transitions, 1992 flow [2024-06-28 00:53:07,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:07,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:07,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:07,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:53:07,320 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:07,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash -163344395, now seen corresponding path program 5 times [2024-06-28 00:53:07,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:07,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263917896] [2024-06-28 00:53:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:08,659 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 00:53:08,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:08,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263917896] [2024-06-28 00:53:08,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263917896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:08,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:08,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:08,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408433804] [2024-06-28 00:53:08,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:08,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:08,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:08,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:08,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:08,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:08,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 171 transitions, 1992 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:08,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:08,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:08,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:09,583 INFO L124 PetriNetUnfolderBase]: 1242/2233 cut-off events. [2024-06-28 00:53:09,583 INFO L125 PetriNetUnfolderBase]: For 24965/24965 co-relation queries the response was YES. [2024-06-28 00:53:09,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12020 conditions, 2233 events. 1242/2233 cut-off events. For 24965/24965 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12678 event pairs, 233 based on Foata normal form. 2/2156 useless extension candidates. Maximal degree in co-relation 11953. Up to 1562 conditions per place. [2024-06-28 00:53:09,601 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 156 selfloop transitions, 74 changer transitions 0/236 dead transitions. [2024-06-28 00:53:09,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 236 transitions, 3091 flow [2024-06-28 00:53:09,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 00:53:09,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835164835164835 [2024-06-28 00:53:09,602 INFO L175 Difference]: Start difference. First operand has 143 places, 171 transitions, 1992 flow. Second operand 7 states and 132 transitions. [2024-06-28 00:53:09,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 236 transitions, 3091 flow [2024-06-28 00:53:09,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 236 transitions, 2953 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:09,639 INFO L231 Difference]: Finished difference. Result has 147 places, 198 transitions, 2505 flow [2024-06-28 00:53:09,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2505, PETRI_PLACES=147, PETRI_TRANSITIONS=198} [2024-06-28 00:53:09,640 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2024-06-28 00:53:09,640 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 198 transitions, 2505 flow [2024-06-28 00:53:09,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:09,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:09,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:09,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:53:09,640 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:09,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:09,641 INFO L85 PathProgramCache]: Analyzing trace with hash -163344147, now seen corresponding path program 2 times [2024-06-28 00:53:09,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:09,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208164125] [2024-06-28 00:53:09,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:09,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:10,987 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 00:53:10,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:10,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208164125] [2024-06-28 00:53:10,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208164125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:10,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:10,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:10,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798391884] [2024-06-28 00:53:10,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:10,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:10,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:10,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:10,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:11,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:11,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 198 transitions, 2505 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:11,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:11,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:11,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:11,667 INFO L124 PetriNetUnfolderBase]: 1240/2247 cut-off events. [2024-06-28 00:53:11,668 INFO L125 PetriNetUnfolderBase]: For 25569/25569 co-relation queries the response was YES. [2024-06-28 00:53:11,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12322 conditions, 2247 events. 1240/2247 cut-off events. For 25569/25569 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13001 event pairs, 440 based on Foata normal form. 1/2165 useless extension candidates. Maximal degree in co-relation 12252. Up to 1839 conditions per place. [2024-06-28 00:53:11,684 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 171 selfloop transitions, 41 changer transitions 0/218 dead transitions. [2024-06-28 00:53:11,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 218 transitions, 3036 flow [2024-06-28 00:53:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:11,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:11,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 00:53:11,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 00:53:11,686 INFO L175 Difference]: Start difference. First operand has 147 places, 198 transitions, 2505 flow. Second operand 7 states and 117 transitions. [2024-06-28 00:53:11,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 218 transitions, 3036 flow [2024-06-28 00:53:11,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 218 transitions, 2986 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-28 00:53:11,728 INFO L231 Difference]: Finished difference. Result has 153 places, 199 transitions, 2570 flow [2024-06-28 00:53:11,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2457, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2570, PETRI_PLACES=153, PETRI_TRANSITIONS=199} [2024-06-28 00:53:11,729 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2024-06-28 00:53:11,729 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 199 transitions, 2570 flow [2024-06-28 00:53:11,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:11,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:11,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:11,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:53:11,730 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:11,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:11,730 INFO L85 PathProgramCache]: Analyzing trace with hash -137830979, now seen corresponding path program 2 times [2024-06-28 00:53:11,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:11,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477804020] [2024-06-28 00:53:11,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:11,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:13,195 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 00:53:13,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477804020] [2024-06-28 00:53:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477804020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:13,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:13,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:13,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865087961] [2024-06-28 00:53:13,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:13,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:13,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:13,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:13,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:13,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:13,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 199 transitions, 2570 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:13,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:13,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:13,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:13,967 INFO L124 PetriNetUnfolderBase]: 1260/2278 cut-off events. [2024-06-28 00:53:13,967 INFO L125 PetriNetUnfolderBase]: For 27335/27335 co-relation queries the response was YES. [2024-06-28 00:53:13,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12603 conditions, 2278 events. 1260/2278 cut-off events. For 27335/27335 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13281 event pairs, 383 based on Foata normal form. 2/2195 useless extension candidates. Maximal degree in co-relation 12530. Up to 1853 conditions per place. [2024-06-28 00:53:13,985 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 183 selfloop transitions, 37 changer transitions 0/226 dead transitions. [2024-06-28 00:53:13,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 226 transitions, 3186 flow [2024-06-28 00:53:13,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:13,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:13,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 00:53:13,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42628205128205127 [2024-06-28 00:53:13,987 INFO L175 Difference]: Start difference. First operand has 153 places, 199 transitions, 2570 flow. Second operand 8 states and 133 transitions. [2024-06-28 00:53:13,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 226 transitions, 3186 flow [2024-06-28 00:53:14,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 226 transitions, 3102 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:14,034 INFO L231 Difference]: Finished difference. Result has 156 places, 202 transitions, 2618 flow [2024-06-28 00:53:14,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2486, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2618, PETRI_PLACES=156, PETRI_TRANSITIONS=202} [2024-06-28 00:53:14,035 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 113 predicate places. [2024-06-28 00:53:14,035 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 202 transitions, 2618 flow [2024-06-28 00:53:14,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:14,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:14,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:14,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:53:14,035 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:14,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:14,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1976746119, now seen corresponding path program 6 times [2024-06-28 00:53:14,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:14,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386016129] [2024-06-28 00:53:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:14,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:15,587 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 00:53:15,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:15,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386016129] [2024-06-28 00:53:15,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386016129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:15,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:15,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:53:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065957479] [2024-06-28 00:53:15,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:15,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:53:15,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:15,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:53:15,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:53:15,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:15,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 202 transitions, 2618 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:15,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:15,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:15,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:16,446 INFO L124 PetriNetUnfolderBase]: 1272/2300 cut-off events. [2024-06-28 00:53:16,446 INFO L125 PetriNetUnfolderBase]: For 28082/28082 co-relation queries the response was YES. [2024-06-28 00:53:16,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12919 conditions, 2300 events. 1272/2300 cut-off events. For 28082/28082 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13295 event pairs, 262 based on Foata normal form. 2/2211 useless extension candidates. Maximal degree in co-relation 12845. Up to 1441 conditions per place. [2024-06-28 00:53:16,465 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 147 selfloop transitions, 86 changer transitions 0/239 dead transitions. [2024-06-28 00:53:16,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 239 transitions, 3388 flow [2024-06-28 00:53:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 00:53:16,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2024-06-28 00:53:16,466 INFO L175 Difference]: Start difference. First operand has 156 places, 202 transitions, 2618 flow. Second operand 7 states and 128 transitions. [2024-06-28 00:53:16,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 239 transitions, 3388 flow [2024-06-28 00:53:16,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 239 transitions, 3294 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:16,517 INFO L231 Difference]: Finished difference. Result has 159 places, 209 transitions, 2888 flow [2024-06-28 00:53:16,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2888, PETRI_PLACES=159, PETRI_TRANSITIONS=209} [2024-06-28 00:53:16,518 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 116 predicate places. [2024-06-28 00:53:16,518 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 209 transitions, 2888 flow [2024-06-28 00:53:16,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:16,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:16,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:16,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:53:16,519 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:16,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1987230567, now seen corresponding path program 3 times [2024-06-28 00:53:16,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:16,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468326652] [2024-06-28 00:53:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:16,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:17,999 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 00:53:17,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:17,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468326652] [2024-06-28 00:53:18,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468326652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:18,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:18,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:18,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373556241] [2024-06-28 00:53:18,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:18,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:18,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:18,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:18,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:18,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:18,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 209 transitions, 2888 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:18,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:18,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:18,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:18,795 INFO L124 PetriNetUnfolderBase]: 1296/2351 cut-off events. [2024-06-28 00:53:18,795 INFO L125 PetriNetUnfolderBase]: For 32803/32803 co-relation queries the response was YES. [2024-06-28 00:53:18,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13875 conditions, 2351 events. 1296/2351 cut-off events. For 32803/32803 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13892 event pairs, 361 based on Foata normal form. 2/2262 useless extension candidates. Maximal degree in co-relation 13798. Up to 1738 conditions per place. [2024-06-28 00:53:18,814 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 170 selfloop transitions, 66 changer transitions 0/242 dead transitions. [2024-06-28 00:53:18,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 242 transitions, 3670 flow [2024-06-28 00:53:18,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:18,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 00:53:18,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391025641025641 [2024-06-28 00:53:18,816 INFO L175 Difference]: Start difference. First operand has 159 places, 209 transitions, 2888 flow. Second operand 8 states and 137 transitions. [2024-06-28 00:53:18,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 242 transitions, 3670 flow [2024-06-28 00:53:18,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 242 transitions, 3579 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-28 00:53:18,875 INFO L231 Difference]: Finished difference. Result has 166 places, 217 transitions, 3073 flow [2024-06-28 00:53:18,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3073, PETRI_PLACES=166, PETRI_TRANSITIONS=217} [2024-06-28 00:53:18,876 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 123 predicate places. [2024-06-28 00:53:18,876 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 217 transitions, 3073 flow [2024-06-28 00:53:18,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:18,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:18,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:18,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:53:18,877 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:18,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:18,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1986874377, now seen corresponding path program 4 times [2024-06-28 00:53:18,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:18,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766392025] [2024-06-28 00:53:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:18,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:20,342 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 00:53:20,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:20,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766392025] [2024-06-28 00:53:20,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766392025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:20,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:20,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:20,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824582556] [2024-06-28 00:53:20,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:20,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:20,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:20,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:20,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:20,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:20,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 217 transitions, 3073 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:20,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:20,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:20,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:21,171 INFO L124 PetriNetUnfolderBase]: 1316/2384 cut-off events. [2024-06-28 00:53:21,171 INFO L125 PetriNetUnfolderBase]: For 33840/33840 co-relation queries the response was YES. [2024-06-28 00:53:21,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14436 conditions, 2384 events. 1316/2384 cut-off events. For 33840/33840 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14144 event pairs, 363 based on Foata normal form. 2/2294 useless extension candidates. Maximal degree in co-relation 14356. Up to 1864 conditions per place. [2024-06-28 00:53:21,191 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 182 selfloop transitions, 56 changer transitions 0/244 dead transitions. [2024-06-28 00:53:21,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 244 transitions, 3764 flow [2024-06-28 00:53:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:21,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 00:53:21,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326923076923077 [2024-06-28 00:53:21,193 INFO L175 Difference]: Start difference. First operand has 166 places, 217 transitions, 3073 flow. Second operand 8 states and 135 transitions. [2024-06-28 00:53:21,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 244 transitions, 3764 flow [2024-06-28 00:53:21,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 244 transitions, 3626 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:21,266 INFO L231 Difference]: Finished difference. Result has 170 places, 220 transitions, 3118 flow [2024-06-28 00:53:21,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2951, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3118, PETRI_PLACES=170, PETRI_TRANSITIONS=220} [2024-06-28 00:53:21,266 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 127 predicate places. [2024-06-28 00:53:21,266 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 220 transitions, 3118 flow [2024-06-28 00:53:21,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:21,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:21,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:21,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:53:21,267 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:21,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:21,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1622126015, now seen corresponding path program 5 times [2024-06-28 00:53:21,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:21,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185652769] [2024-06-28 00:53:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:21,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:22,660 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 00:53:22,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:22,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185652769] [2024-06-28 00:53:22,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185652769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:22,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:22,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:22,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926977905] [2024-06-28 00:53:22,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:22,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:22,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:22,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:22,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:22,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 220 transitions, 3118 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:22,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:22,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:22,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:23,550 INFO L124 PetriNetUnfolderBase]: 1324/2398 cut-off events. [2024-06-28 00:53:23,551 INFO L125 PetriNetUnfolderBase]: For 33717/33717 co-relation queries the response was YES. [2024-06-28 00:53:23,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14591 conditions, 2398 events. 1324/2398 cut-off events. For 33717/33717 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14093 event pairs, 445 based on Foata normal form. 2/2310 useless extension candidates. Maximal degree in co-relation 14509. Up to 1960 conditions per place. [2024-06-28 00:53:23,568 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 204 selfloop transitions, 41 changer transitions 0/251 dead transitions. [2024-06-28 00:53:23,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 251 transitions, 3809 flow [2024-06-28 00:53:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:23,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 00:53:23,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42450142450142453 [2024-06-28 00:53:23,570 INFO L175 Difference]: Start difference. First operand has 170 places, 220 transitions, 3118 flow. Second operand 9 states and 149 transitions. [2024-06-28 00:53:23,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 251 transitions, 3809 flow [2024-06-28 00:53:23,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 251 transitions, 3675 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:23,631 INFO L231 Difference]: Finished difference. Result has 173 places, 223 transitions, 3127 flow [2024-06-28 00:53:23,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2984, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3127, PETRI_PLACES=173, PETRI_TRANSITIONS=223} [2024-06-28 00:53:23,632 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 130 predicate places. [2024-06-28 00:53:23,632 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 223 transitions, 3127 flow [2024-06-28 00:53:23,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 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 00:53:23,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:23,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:23,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:53:23,633 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:23,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:23,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1987243463, now seen corresponding path program 1 times [2024-06-28 00:53:23,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:23,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826637814] [2024-06-28 00:53:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:23,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:26,629 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 00:53:26,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:26,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826637814] [2024-06-28 00:53:26,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826637814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:26,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:26,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:26,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740910954] [2024-06-28 00:53:26,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:26,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:26,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:26,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:26,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:26,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:26,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 223 transitions, 3127 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:26,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:26,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:26,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:27,551 INFO L124 PetriNetUnfolderBase]: 1327/2405 cut-off events. [2024-06-28 00:53:27,551 INFO L125 PetriNetUnfolderBase]: For 35082/35082 co-relation queries the response was YES. [2024-06-28 00:53:27,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14542 conditions, 2405 events. 1327/2405 cut-off events. For 35082/35082 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14146 event pairs, 536 based on Foata normal form. 1/2315 useless extension candidates. Maximal degree in co-relation 14459. Up to 2057 conditions per place. [2024-06-28 00:53:27,572 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 222 selfloop transitions, 22 changer transitions 0/250 dead transitions. [2024-06-28 00:53:27,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 250 transitions, 3810 flow [2024-06-28 00:53:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:27,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 00:53:27,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4198717948717949 [2024-06-28 00:53:27,574 INFO L175 Difference]: Start difference. First operand has 173 places, 223 transitions, 3127 flow. Second operand 8 states and 131 transitions. [2024-06-28 00:53:27,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 250 transitions, 3810 flow [2024-06-28 00:53:27,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 250 transitions, 3700 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:27,699 INFO L231 Difference]: Finished difference. Result has 174 places, 226 transitions, 3112 flow [2024-06-28 00:53:27,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3112, PETRI_PLACES=174, PETRI_TRANSITIONS=226} [2024-06-28 00:53:27,699 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 131 predicate places. [2024-06-28 00:53:27,699 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 226 transitions, 3112 flow [2024-06-28 00:53:27,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:27,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:27,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:27,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:53:27,700 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:27,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:27,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1513804654, now seen corresponding path program 1 times [2024-06-28 00:53:27,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:27,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173008056] [2024-06-28 00:53:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:27,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:29,428 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 00:53:29,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:29,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173008056] [2024-06-28 00:53:29,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173008056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:29,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:29,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:29,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564892855] [2024-06-28 00:53:29,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:29,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:29,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:29,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:29,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:29,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:29,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 226 transitions, 3112 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:29,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:29,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:29,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:30,273 INFO L124 PetriNetUnfolderBase]: 1353/2443 cut-off events. [2024-06-28 00:53:30,273 INFO L125 PetriNetUnfolderBase]: For 35054/35054 co-relation queries the response was YES. [2024-06-28 00:53:30,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14809 conditions, 2443 events. 1353/2443 cut-off events. For 35054/35054 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14372 event pairs, 346 based on Foata normal form. 2/2355 useless extension candidates. Maximal degree in co-relation 14725. Up to 1994 conditions per place. [2024-06-28 00:53:30,296 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 223 selfloop transitions, 39 changer transitions 0/268 dead transitions. [2024-06-28 00:53:30,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 268 transitions, 3948 flow [2024-06-28 00:53:30,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 00:53:30,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43304843304843305 [2024-06-28 00:53:30,298 INFO L175 Difference]: Start difference. First operand has 174 places, 226 transitions, 3112 flow. Second operand 9 states and 152 transitions. [2024-06-28 00:53:30,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 268 transitions, 3948 flow [2024-06-28 00:53:30,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 268 transitions, 3887 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:30,376 INFO L231 Difference]: Finished difference. Result has 179 places, 237 transitions, 3344 flow [2024-06-28 00:53:30,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3344, PETRI_PLACES=179, PETRI_TRANSITIONS=237} [2024-06-28 00:53:30,377 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 136 predicate places. [2024-06-28 00:53:30,377 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 237 transitions, 3344 flow [2024-06-28 00:53:30,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:30,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:30,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:30,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:53:30,378 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:30,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:30,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1463957114, now seen corresponding path program 2 times [2024-06-28 00:53:30,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:30,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081881627] [2024-06-28 00:53:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:30,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:31,904 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 00:53:31,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:31,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081881627] [2024-06-28 00:53:31,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081881627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:31,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:31,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:31,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327549136] [2024-06-28 00:53:31,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:31,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:31,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:31,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:31,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:31,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:31,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 237 transitions, 3344 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:31,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:31,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:31,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:32,868 INFO L124 PetriNetUnfolderBase]: 1397/2519 cut-off events. [2024-06-28 00:53:32,868 INFO L125 PetriNetUnfolderBase]: For 39001/39001 co-relation queries the response was YES. [2024-06-28 00:53:32,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15567 conditions, 2519 events. 1397/2519 cut-off events. For 39001/39001 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 14857 event pairs, 336 based on Foata normal form. 2/2427 useless extension candidates. Maximal degree in co-relation 15480. Up to 2049 conditions per place. [2024-06-28 00:53:32,896 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 226 selfloop transitions, 43 changer transitions 0/275 dead transitions. [2024-06-28 00:53:32,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 275 transitions, 4149 flow [2024-06-28 00:53:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 00:53:32,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43874643874643876 [2024-06-28 00:53:32,898 INFO L175 Difference]: Start difference. First operand has 179 places, 237 transitions, 3344 flow. Second operand 9 states and 154 transitions. [2024-06-28 00:53:32,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 275 transitions, 4149 flow [2024-06-28 00:53:32,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 275 transitions, 4018 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:32,977 INFO L231 Difference]: Finished difference. Result has 185 places, 245 transitions, 3464 flow [2024-06-28 00:53:32,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3464, PETRI_PLACES=185, PETRI_TRANSITIONS=245} [2024-06-28 00:53:32,978 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 142 predicate places. [2024-06-28 00:53:32,978 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 245 transitions, 3464 flow [2024-06-28 00:53:32,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:32,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:32,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:32,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:53:32,979 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:32,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:32,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1467705014, now seen corresponding path program 3 times [2024-06-28 00:53:32,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:32,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693956249] [2024-06-28 00:53:32,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:32,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:34,550 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 00:53:34,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:34,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693956249] [2024-06-28 00:53:34,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693956249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:34,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:34,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:34,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901441410] [2024-06-28 00:53:34,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:34,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:34,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:34,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:34,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:34,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:34,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 245 transitions, 3464 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:34,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:34,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:34,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:35,557 INFO L124 PetriNetUnfolderBase]: 1423/2565 cut-off events. [2024-06-28 00:53:35,557 INFO L125 PetriNetUnfolderBase]: For 41788/41788 co-relation queries the response was YES. [2024-06-28 00:53:35,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15997 conditions, 2565 events. 1423/2565 cut-off events. For 41788/41788 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 15198 event pairs, 316 based on Foata normal form. 2/2470 useless extension candidates. Maximal degree in co-relation 15908. Up to 2049 conditions per place. [2024-06-28 00:53:35,581 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 223 selfloop transitions, 52 changer transitions 0/281 dead transitions. [2024-06-28 00:53:35,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 281 transitions, 4238 flow [2024-06-28 00:53:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:35,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 00:53:35,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415954415954416 [2024-06-28 00:53:35,583 INFO L175 Difference]: Start difference. First operand has 185 places, 245 transitions, 3464 flow. Second operand 9 states and 155 transitions. [2024-06-28 00:53:35,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 281 transitions, 4238 flow [2024-06-28 00:53:35,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 281 transitions, 4156 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:35,668 INFO L231 Difference]: Finished difference. Result has 192 places, 250 transitions, 3584 flow [2024-06-28 00:53:35,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3382, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3584, PETRI_PLACES=192, PETRI_TRANSITIONS=250} [2024-06-28 00:53:35,669 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 149 predicate places. [2024-06-28 00:53:35,669 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 250 transitions, 3584 flow [2024-06-28 00:53:35,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:35,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:35,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:35,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:53:35,670 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:35,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1467712733, now seen corresponding path program 1 times [2024-06-28 00:53:35,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:35,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703506195] [2024-06-28 00:53:35,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:35,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:37,114 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 00:53:37,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:37,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703506195] [2024-06-28 00:53:37,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703506195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:37,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:37,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:37,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223352923] [2024-06-28 00:53:37,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:37,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:37,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:37,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:37,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:37,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:37,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 250 transitions, 3584 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:37,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:37,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:37,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:38,048 INFO L124 PetriNetUnfolderBase]: 1433/2582 cut-off events. [2024-06-28 00:53:38,048 INFO L125 PetriNetUnfolderBase]: For 45152/45152 co-relation queries the response was YES. [2024-06-28 00:53:38,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16349 conditions, 2582 events. 1433/2582 cut-off events. For 45152/45152 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15314 event pairs, 499 based on Foata normal form. 1/2487 useless extension candidates. Maximal degree in co-relation 16258. Up to 2153 conditions per place. [2024-06-28 00:53:38,071 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 235 selfloop transitions, 39 changer transitions 0/280 dead transitions. [2024-06-28 00:53:38,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 280 transitions, 4341 flow [2024-06-28 00:53:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:38,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 00:53:38,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42450142450142453 [2024-06-28 00:53:38,073 INFO L175 Difference]: Start difference. First operand has 192 places, 250 transitions, 3584 flow. Second operand 9 states and 149 transitions. [2024-06-28 00:53:38,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 280 transitions, 4341 flow [2024-06-28 00:53:38,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 280 transitions, 4201 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:38,161 INFO L231 Difference]: Finished difference. Result has 195 places, 253 transitions, 3593 flow [2024-06-28 00:53:38,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3444, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3593, PETRI_PLACES=195, PETRI_TRANSITIONS=253} [2024-06-28 00:53:38,161 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-06-28 00:53:38,162 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 253 transitions, 3593 flow [2024-06-28 00:53:38,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:38,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:38,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:38,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:53:38,162 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:38,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:38,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1467712454, now seen corresponding path program 4 times [2024-06-28 00:53:38,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:38,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421531140] [2024-06-28 00:53:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:38,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:39,727 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 00:53:39,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:39,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421531140] [2024-06-28 00:53:39,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421531140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:39,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:39,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:39,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121176207] [2024-06-28 00:53:39,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:39,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:39,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:39,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:39,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:39,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:39,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 253 transitions, 3593 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:39,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:39,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:39,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:40,867 INFO L124 PetriNetUnfolderBase]: 1465/2642 cut-off events. [2024-06-28 00:53:40,867 INFO L125 PetriNetUnfolderBase]: For 46228/46228 co-relation queries the response was YES. [2024-06-28 00:53:40,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16608 conditions, 2642 events. 1465/2642 cut-off events. For 46228/46228 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 15780 event pairs, 301 based on Foata normal form. 2/2543 useless extension candidates. Maximal degree in co-relation 16516. Up to 1976 conditions per place. [2024-06-28 00:53:40,890 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 222 selfloop transitions, 64 changer transitions 0/292 dead transitions. [2024-06-28 00:53:40,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 292 transitions, 4441 flow [2024-06-28 00:53:40,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:40,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 00:53:40,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.452991452991453 [2024-06-28 00:53:40,892 INFO L175 Difference]: Start difference. First operand has 195 places, 253 transitions, 3593 flow. Second operand 9 states and 159 transitions. [2024-06-28 00:53:40,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 292 transitions, 4441 flow [2024-06-28 00:53:40,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 292 transitions, 4345 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:40,998 INFO L231 Difference]: Finished difference. Result has 198 places, 257 transitions, 3728 flow [2024-06-28 00:53:40,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3497, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3728, PETRI_PLACES=198, PETRI_TRANSITIONS=257} [2024-06-28 00:53:40,999 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 155 predicate places. [2024-06-28 00:53:40,999 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 257 transitions, 3728 flow [2024-06-28 00:53:41,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:41,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:41,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:41,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:53:41,000 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:41,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:41,001 INFO L85 PathProgramCache]: Analyzing trace with hash -680028110, now seen corresponding path program 1 times [2024-06-28 00:53:41,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:41,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814252209] [2024-06-28 00:53:41,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:41,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:42,733 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 00:53:42,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814252209] [2024-06-28 00:53:42,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814252209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:42,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:42,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:42,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959086929] [2024-06-28 00:53:42,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:42,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:42,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:42,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:42,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:42,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 257 transitions, 3728 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:42,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:42,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:42,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:43,736 INFO L124 PetriNetUnfolderBase]: 1500/2709 cut-off events. [2024-06-28 00:53:43,737 INFO L125 PetriNetUnfolderBase]: For 50312/50312 co-relation queries the response was YES. [2024-06-28 00:53:43,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17422 conditions, 2709 events. 1500/2709 cut-off events. For 50312/50312 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16477 event pairs, 423 based on Foata normal form. 2/2606 useless extension candidates. Maximal degree in co-relation 17328. Up to 2235 conditions per place. [2024-06-28 00:53:43,761 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 258 selfloop transitions, 35 changer transitions 0/299 dead transitions. [2024-06-28 00:53:43,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 299 transitions, 4659 flow [2024-06-28 00:53:43,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:43,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 00:53:43,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4282051282051282 [2024-06-28 00:53:43,762 INFO L175 Difference]: Start difference. First operand has 198 places, 257 transitions, 3728 flow. Second operand 10 states and 167 transitions. [2024-06-28 00:53:43,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 299 transitions, 4659 flow [2024-06-28 00:53:43,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 299 transitions, 4551 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:43,869 INFO L231 Difference]: Finished difference. Result has 205 places, 264 transitions, 3859 flow [2024-06-28 00:53:43,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3632, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3859, PETRI_PLACES=205, PETRI_TRANSITIONS=264} [2024-06-28 00:53:43,870 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 162 predicate places. [2024-06-28 00:53:43,870 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 264 transitions, 3859 flow [2024-06-28 00:53:43,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:43,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:43,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:43,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:53:43,871 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:43,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:43,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1070844080, now seen corresponding path program 5 times [2024-06-28 00:53:43,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:43,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667733660] [2024-06-28 00:53:43,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:43,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:45,594 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 00:53:45,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:45,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667733660] [2024-06-28 00:53:45,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667733660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:45,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:45,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:45,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521508908] [2024-06-28 00:53:45,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:45,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:45,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:45,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:45,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:45,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:45,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 264 transitions, 3859 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:45,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:45,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:45,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:46,639 INFO L124 PetriNetUnfolderBase]: 1526/2756 cut-off events. [2024-06-28 00:53:46,639 INFO L125 PetriNetUnfolderBase]: For 52652/52652 co-relation queries the response was YES. [2024-06-28 00:53:46,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18012 conditions, 2756 events. 1526/2756 cut-off events. For 52652/52652 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16631 event pairs, 378 based on Foata normal form. 2/2653 useless extension candidates. Maximal degree in co-relation 17914. Up to 2159 conditions per place. [2024-06-28 00:53:46,669 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 241 selfloop transitions, 49 changer transitions 0/296 dead transitions. [2024-06-28 00:53:46,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 296 transitions, 4667 flow [2024-06-28 00:53:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 00:53:46,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2024-06-28 00:53:46,672 INFO L175 Difference]: Start difference. First operand has 205 places, 264 transitions, 3859 flow. Second operand 8 states and 136 transitions. [2024-06-28 00:53:46,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 296 transitions, 4667 flow [2024-06-28 00:53:46,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 296 transitions, 4560 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:46,792 INFO L231 Difference]: Finished difference. Result has 210 places, 269 transitions, 3980 flow [2024-06-28 00:53:46,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3752, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3980, PETRI_PLACES=210, PETRI_TRANSITIONS=269} [2024-06-28 00:53:46,793 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 167 predicate places. [2024-06-28 00:53:46,793 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 269 transitions, 3980 flow [2024-06-28 00:53:46,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:46,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:46,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:46,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:53:46,793 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:46,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:46,794 INFO L85 PathProgramCache]: Analyzing trace with hash -907227782, now seen corresponding path program 6 times [2024-06-28 00:53:46,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:46,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756689693] [2024-06-28 00:53:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:46,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:48,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:48,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756689693] [2024-06-28 00:53:48,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756689693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:48,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:48,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:48,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734217043] [2024-06-28 00:53:48,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:48,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:48,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:48,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:48,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:48,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:48,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 269 transitions, 3980 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:48,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:48,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:48,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:49,573 INFO L124 PetriNetUnfolderBase]: 1588/2866 cut-off events. [2024-06-28 00:53:49,573 INFO L125 PetriNetUnfolderBase]: For 58691/58691 co-relation queries the response was YES. [2024-06-28 00:53:49,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19223 conditions, 2866 events. 1588/2866 cut-off events. For 58691/58691 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17489 event pairs, 263 based on Foata normal form. 2/2756 useless extension candidates. Maximal degree in co-relation 19122. Up to 1983 conditions per place. [2024-06-28 00:53:49,600 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 222 selfloop transitions, 81 changer transitions 0/309 dead transitions. [2024-06-28 00:53:49,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 309 transitions, 5016 flow [2024-06-28 00:53:49,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 00:53:49,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551282051282051 [2024-06-28 00:53:49,602 INFO L175 Difference]: Start difference. First operand has 210 places, 269 transitions, 3980 flow. Second operand 8 states and 142 transitions. [2024-06-28 00:53:49,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 309 transitions, 5016 flow [2024-06-28 00:53:49,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 309 transitions, 4906 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:49,722 INFO L231 Difference]: Finished difference. Result has 215 places, 277 transitions, 4286 flow [2024-06-28 00:53:49,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3870, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4286, PETRI_PLACES=215, PETRI_TRANSITIONS=277} [2024-06-28 00:53:49,723 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 172 predicate places. [2024-06-28 00:53:49,723 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 277 transitions, 4286 flow [2024-06-28 00:53:49,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:49,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:49,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:49,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:53:49,724 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:49,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:49,724 INFO L85 PathProgramCache]: Analyzing trace with hash 28724731, now seen corresponding path program 2 times [2024-06-28 00:53:49,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:49,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006379725] [2024-06-28 00:53:49,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:49,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:51,283 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 00:53:51,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:51,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006379725] [2024-06-28 00:53:51,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006379725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:51,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:51,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:51,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870657440] [2024-06-28 00:53:51,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:51,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:51,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:51,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:51,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:51,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:51,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 277 transitions, 4286 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:51,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:51,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:51,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:52,265 INFO L124 PetriNetUnfolderBase]: 1586/2865 cut-off events. [2024-06-28 00:53:52,265 INFO L125 PetriNetUnfolderBase]: For 63218/63218 co-relation queries the response was YES. [2024-06-28 00:53:52,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19920 conditions, 2865 events. 1586/2865 cut-off events. For 63218/63218 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17556 event pairs, 492 based on Foata normal form. 1/2755 useless extension candidates. Maximal degree in co-relation 19816. Up to 2309 conditions per place. [2024-06-28 00:53:52,293 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 243 selfloop transitions, 53 changer transitions 0/302 dead transitions. [2024-06-28 00:53:52,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 302 transitions, 5055 flow [2024-06-28 00:53:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:52,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:52,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 00:53:52,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42628205128205127 [2024-06-28 00:53:52,295 INFO L175 Difference]: Start difference. First operand has 215 places, 277 transitions, 4286 flow. Second operand 8 states and 133 transitions. [2024-06-28 00:53:52,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 302 transitions, 5055 flow [2024-06-28 00:53:52,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 302 transitions, 4958 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:52,447 INFO L231 Difference]: Finished difference. Result has 220 places, 278 transitions, 4338 flow [2024-06-28 00:53:52,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4195, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4338, PETRI_PLACES=220, PETRI_TRANSITIONS=278} [2024-06-28 00:53:52,447 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-06-28 00:53:52,448 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 278 transitions, 4338 flow [2024-06-28 00:53:52,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:52,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:52,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:52,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:53:52,448 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:52,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:52,449 INFO L85 PathProgramCache]: Analyzing trace with hash 28717012, now seen corresponding path program 7 times [2024-06-28 00:53:52,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:52,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772041819] [2024-06-28 00:53:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:52,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:54,001 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 00:53:54,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:54,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772041819] [2024-06-28 00:53:54,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772041819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:54,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:54,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:54,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192692504] [2024-06-28 00:53:54,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:54,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:54,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:54,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:54,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:54,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:54,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 278 transitions, 4338 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:54,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:54,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:54,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:55,131 INFO L124 PetriNetUnfolderBase]: 1582/2857 cut-off events. [2024-06-28 00:53:55,132 INFO L125 PetriNetUnfolderBase]: For 61697/61697 co-relation queries the response was YES. [2024-06-28 00:53:55,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19846 conditions, 2857 events. 1582/2857 cut-off events. For 61697/61697 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17443 event pairs, 279 based on Foata normal form. 2/2747 useless extension candidates. Maximal degree in co-relation 19740. Up to 2212 conditions per place. [2024-06-28 00:53:55,164 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 240 selfloop transitions, 60 changer transitions 0/306 dead transitions. [2024-06-28 00:53:55,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 306 transitions, 5103 flow [2024-06-28 00:53:55,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 00:53:55,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391025641025641 [2024-06-28 00:53:55,165 INFO L175 Difference]: Start difference. First operand has 220 places, 278 transitions, 4338 flow. Second operand 8 states and 137 transitions. [2024-06-28 00:53:55,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 306 transitions, 5103 flow [2024-06-28 00:53:55,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 306 transitions, 4981 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:55,418 INFO L231 Difference]: Finished difference. Result has 222 places, 279 transitions, 4367 flow [2024-06-28 00:53:55,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4218, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4367, PETRI_PLACES=222, PETRI_TRANSITIONS=279} [2024-06-28 00:53:55,418 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 179 predicate places. [2024-06-28 00:53:55,419 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 279 transitions, 4367 flow [2024-06-28 00:53:55,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:55,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:55,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:55,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:53:55,419 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:55,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:55,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1916600654, now seen corresponding path program 2 times [2024-06-28 00:53:55,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:55,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4427643] [2024-06-28 00:53:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:55,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:57,275 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 00:53:57,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:57,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4427643] [2024-06-28 00:53:57,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4427643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:57,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:57,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:57,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902418657] [2024-06-28 00:53:57,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:57,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:57,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:57,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:57,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:57,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:53:57,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 279 transitions, 4367 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:57,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:57,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:53:57,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:58,342 INFO L124 PetriNetUnfolderBase]: 1617/2924 cut-off events. [2024-06-28 00:53:58,342 INFO L125 PetriNetUnfolderBase]: For 63721/63721 co-relation queries the response was YES. [2024-06-28 00:53:58,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20312 conditions, 2924 events. 1617/2924 cut-off events. For 63721/63721 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18154 event pairs, 422 based on Foata normal form. 2/2810 useless extension candidates. Maximal degree in co-relation 20205. Up to 2312 conditions per place. [2024-06-28 00:53:58,374 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 265 selfloop transitions, 47 changer transitions 0/318 dead transitions. [2024-06-28 00:53:58,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 318 transitions, 5348 flow [2024-06-28 00:53:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:58,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:58,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 00:53:58,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43304843304843305 [2024-06-28 00:53:58,376 INFO L175 Difference]: Start difference. First operand has 222 places, 279 transitions, 4367 flow. Second operand 9 states and 152 transitions. [2024-06-28 00:53:58,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 318 transitions, 5348 flow [2024-06-28 00:53:58,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 318 transitions, 5180 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:58,529 INFO L231 Difference]: Finished difference. Result has 227 places, 286 transitions, 4486 flow [2024-06-28 00:53:58,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4199, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4486, PETRI_PLACES=227, PETRI_TRANSITIONS=286} [2024-06-28 00:53:58,530 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 184 predicate places. [2024-06-28 00:53:58,530 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 286 transitions, 4486 flow [2024-06-28 00:53:58,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:53:58,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:58,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:58,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:53:58,531 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:53:58,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:58,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1149856332, now seen corresponding path program 8 times [2024-06-28 00:53:58,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:58,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210282592] [2024-06-28 00:53:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:58,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:00,346 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 00:54:00,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:00,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210282592] [2024-06-28 00:54:00,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210282592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:00,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:00,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:54:00,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820934683] [2024-06-28 00:54:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:00,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:54:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:00,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:54:00,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:54:00,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:00,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 286 transitions, 4486 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:00,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:00,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:00,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:01,413 INFO L124 PetriNetUnfolderBase]: 1679/3037 cut-off events. [2024-06-28 00:54:01,413 INFO L125 PetriNetUnfolderBase]: For 69944/69944 co-relation queries the response was YES. [2024-06-28 00:54:01,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21424 conditions, 3037 events. 1679/3037 cut-off events. For 69944/69944 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 18851 event pairs, 283 based on Foata normal form. 2/2912 useless extension candidates. Maximal degree in co-relation 21314. Up to 2299 conditions per place. [2024-06-28 00:54:01,443 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 255 selfloop transitions, 65 changer transitions 0/326 dead transitions. [2024-06-28 00:54:01,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 326 transitions, 5570 flow [2024-06-28 00:54:01,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:54:01,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:54:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 00:54:01,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 00:54:01,446 INFO L175 Difference]: Start difference. First operand has 227 places, 286 transitions, 4486 flow. Second operand 8 states and 144 transitions. [2024-06-28 00:54:01,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 326 transitions, 5570 flow [2024-06-28 00:54:01,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 326 transitions, 5438 flow, removed 50 selfloop flow, removed 4 redundant places. [2024-06-28 00:54:01,611 INFO L231 Difference]: Finished difference. Result has 233 places, 294 transitions, 4679 flow [2024-06-28 00:54:01,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4360, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4679, PETRI_PLACES=233, PETRI_TRANSITIONS=294} [2024-06-28 00:54:01,612 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 190 predicate places. [2024-06-28 00:54:01,612 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 294 transitions, 4679 flow [2024-06-28 00:54:01,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:01,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:01,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:01,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:54:01,613 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:01,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:01,613 INFO L85 PathProgramCache]: Analyzing trace with hash -616209896, now seen corresponding path program 3 times [2024-06-28 00:54:01,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:01,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186777804] [2024-06-28 00:54:01,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:01,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:03,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:03,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186777804] [2024-06-28 00:54:03,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186777804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:03,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:03,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:54:03,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307796670] [2024-06-28 00:54:03,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:03,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:54:03,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:03,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:54:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:54:03,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:03,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 294 transitions, 4679 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:54:03,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:03,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:03,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:04,495 INFO L124 PetriNetUnfolderBase]: 1711/3093 cut-off events. [2024-06-28 00:54:04,495 INFO L125 PetriNetUnfolderBase]: For 73150/73150 co-relation queries the response was YES. [2024-06-28 00:54:04,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22013 conditions, 3093 events. 1711/3093 cut-off events. For 73150/73150 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 19391 event pairs, 435 based on Foata normal form. 2/2971 useless extension candidates. Maximal degree in co-relation 21899. Up to 2514 conditions per place. [2024-06-28 00:54:04,531 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 281 selfloop transitions, 44 changer transitions 0/331 dead transitions. [2024-06-28 00:54:04,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 331 transitions, 5676 flow [2024-06-28 00:54:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 00:54:04,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43304843304843305 [2024-06-28 00:54:04,533 INFO L175 Difference]: Start difference. First operand has 233 places, 294 transitions, 4679 flow. Second operand 9 states and 152 transitions. [2024-06-28 00:54:04,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 331 transitions, 5676 flow [2024-06-28 00:54:04,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 331 transitions, 5533 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 00:54:04,737 INFO L231 Difference]: Finished difference. Result has 241 places, 300 transitions, 4783 flow [2024-06-28 00:54:04,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4538, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4783, PETRI_PLACES=241, PETRI_TRANSITIONS=300} [2024-06-28 00:54:04,738 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 198 predicate places. [2024-06-28 00:54:04,738 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 300 transitions, 4783 flow [2024-06-28 00:54:04,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:54:04,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:04,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:04,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:54:04,739 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:04,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:04,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1463555562, now seen corresponding path program 9 times [2024-06-28 00:54:04,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:04,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435300434] [2024-06-28 00:54:04,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:04,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:06,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:06,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435300434] [2024-06-28 00:54:06,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435300434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:06,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:06,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:54:06,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229489931] [2024-06-28 00:54:06,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:06,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:54:06,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:06,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:54:06,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:54:06,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:06,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 300 transitions, 4783 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:06,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:06,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:06,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:07,671 INFO L124 PetriNetUnfolderBase]: 1723/3087 cut-off events. [2024-06-28 00:54:07,672 INFO L125 PetriNetUnfolderBase]: For 73612/73612 co-relation queries the response was YES. [2024-06-28 00:54:07,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22353 conditions, 3087 events. 1723/3087 cut-off events. For 73612/73612 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19256 event pairs, 243 based on Foata normal form. 2/2970 useless extension candidates. Maximal degree in co-relation 22235. Up to 2015 conditions per place. [2024-06-28 00:54:07,704 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 234 selfloop transitions, 97 changer transitions 0/337 dead transitions. [2024-06-28 00:54:07,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 337 transitions, 5871 flow [2024-06-28 00:54:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:54:07,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:54:07,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 00:54:07,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46474358974358976 [2024-06-28 00:54:07,705 INFO L175 Difference]: Start difference. First operand has 241 places, 300 transitions, 4783 flow. Second operand 8 states and 145 transitions. [2024-06-28 00:54:07,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 337 transitions, 5871 flow [2024-06-28 00:54:07,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 337 transitions, 5713 flow, removed 59 selfloop flow, removed 4 redundant places. [2024-06-28 00:54:07,926 INFO L231 Difference]: Finished difference. Result has 246 places, 304 transitions, 4937 flow [2024-06-28 00:54:07,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4625, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4937, PETRI_PLACES=246, PETRI_TRANSITIONS=304} [2024-06-28 00:54:07,927 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 203 predicate places. [2024-06-28 00:54:07,927 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 304 transitions, 4937 flow [2024-06-28 00:54:07,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:07,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:07,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:07,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:54:07,928 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:07,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1262640326, now seen corresponding path program 4 times [2024-06-28 00:54:07,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:07,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899419637] [2024-06-28 00:54:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:07,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:09,764 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 00:54:09,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:09,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899419637] [2024-06-28 00:54:09,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899419637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:09,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:09,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:54:09,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794813082] [2024-06-28 00:54:09,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:09,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:54:09,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:09,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:54:09,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:54:09,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:09,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 304 transitions, 4937 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:54:09,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:09,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:09,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:10,985 INFO L124 PetriNetUnfolderBase]: 1755/3145 cut-off events. [2024-06-28 00:54:10,985 INFO L125 PetriNetUnfolderBase]: For 78756/78756 co-relation queries the response was YES. [2024-06-28 00:54:11,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23234 conditions, 3145 events. 1755/3145 cut-off events. For 78756/78756 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 19848 event pairs, 402 based on Foata normal form. 2/3029 useless extension candidates. Maximal degree in co-relation 23113. Up to 2474 conditions per place. [2024-06-28 00:54:11,018 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 269 selfloop transitions, 67 changer transitions 0/342 dead transitions. [2024-06-28 00:54:11,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 342 transitions, 5985 flow [2024-06-28 00:54:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 00:54:11,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415954415954416 [2024-06-28 00:54:11,019 INFO L175 Difference]: Start difference. First operand has 246 places, 304 transitions, 4937 flow. Second operand 9 states and 155 transitions. [2024-06-28 00:54:11,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 342 transitions, 5985 flow [2024-06-28 00:54:11,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 342 transitions, 5789 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 00:54:11,243 INFO L231 Difference]: Finished difference. Result has 252 places, 309 transitions, 5020 flow [2024-06-28 00:54:11,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4741, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5020, PETRI_PLACES=252, PETRI_TRANSITIONS=309} [2024-06-28 00:54:11,243 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 209 predicate places. [2024-06-28 00:54:11,243 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 309 transitions, 5020 flow [2024-06-28 00:54:11,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:54:11,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:11,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:11,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:54:11,244 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:11,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:11,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1474607372, now seen corresponding path program 5 times [2024-06-28 00:54:11,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:11,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013856669] [2024-06-28 00:54:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:11,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:13,210 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 00:54:13,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:13,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013856669] [2024-06-28 00:54:13,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013856669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:13,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:13,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:54:13,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652942135] [2024-06-28 00:54:13,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:13,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:54:13,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:13,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:54:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:54:13,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:13,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 309 transitions, 5020 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:54:13,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:13,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:13,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:14,527 INFO L124 PetriNetUnfolderBase]: 1790/3272 cut-off events. [2024-06-28 00:54:14,528 INFO L125 PetriNetUnfolderBase]: For 81973/81973 co-relation queries the response was YES. [2024-06-28 00:54:14,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24021 conditions, 3272 events. 1790/3272 cut-off events. For 81973/81973 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 21095 event pairs, 401 based on Foata normal form. 2/3132 useless extension candidates. Maximal degree in co-relation 23897. Up to 2366 conditions per place. [2024-06-28 00:54:14,564 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 252 selfloop transitions, 91 changer transitions 0/349 dead transitions. [2024-06-28 00:54:14,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 349 transitions, 6148 flow [2024-06-28 00:54:14,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:14,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 00:54:14,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:54:14,566 INFO L175 Difference]: Start difference. First operand has 252 places, 309 transitions, 5020 flow. Second operand 9 states and 156 transitions. [2024-06-28 00:54:14,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 349 transitions, 6148 flow [2024-06-28 00:54:14,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 349 transitions, 5950 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-28 00:54:14,805 INFO L231 Difference]: Finished difference. Result has 256 places, 316 transitions, 5209 flow [2024-06-28 00:54:14,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4828, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5209, PETRI_PLACES=256, PETRI_TRANSITIONS=316} [2024-06-28 00:54:14,805 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 213 predicate places. [2024-06-28 00:54:14,805 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 316 transitions, 5209 flow [2024-06-28 00:54:14,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:54:14,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:14,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:14,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:54:14,806 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:14,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:14,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1149589422, now seen corresponding path program 10 times [2024-06-28 00:54:14,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:14,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134228949] [2024-06-28 00:54:14,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:14,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:16,474 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 00:54:16,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:16,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134228949] [2024-06-28 00:54:16,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134228949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:16,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:16,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:54:16,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735024766] [2024-06-28 00:54:16,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:16,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:54:16,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:16,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:54:16,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:54:16,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:16,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 316 transitions, 5209 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:54:16,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:16,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:16,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:17,564 INFO L124 PetriNetUnfolderBase]: 1786/3237 cut-off events. [2024-06-28 00:54:17,565 INFO L125 PetriNetUnfolderBase]: For 82107/82107 co-relation queries the response was YES. [2024-06-28 00:54:17,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24175 conditions, 3237 events. 1786/3237 cut-off events. For 82107/82107 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 20477 event pairs, 324 based on Foata normal form. 2/3103 useless extension candidates. Maximal degree in co-relation 24050. Up to 2524 conditions per place. [2024-06-28 00:54:17,607 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 275 selfloop transitions, 61 changer transitions 0/342 dead transitions. [2024-06-28 00:54:17,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 342 transitions, 6033 flow [2024-06-28 00:54:17,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:54:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:54:17,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 00:54:17,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391025641025641 [2024-06-28 00:54:17,609 INFO L175 Difference]: Start difference. First operand has 256 places, 316 transitions, 5209 flow. Second operand 8 states and 137 transitions. [2024-06-28 00:54:17,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 342 transitions, 6033 flow [2024-06-28 00:54:17,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 342 transitions, 5783 flow, removed 90 selfloop flow, removed 4 redundant places. [2024-06-28 00:54:17,870 INFO L231 Difference]: Finished difference. Result has 260 places, 316 transitions, 5086 flow [2024-06-28 00:54:17,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4959, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5086, PETRI_PLACES=260, PETRI_TRANSITIONS=316} [2024-06-28 00:54:17,871 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 217 predicate places. [2024-06-28 00:54:17,871 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 316 transitions, 5086 flow [2024-06-28 00:54:17,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:54:17,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:17,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:17,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:54:17,872 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:17,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:17,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1474993322, now seen corresponding path program 6 times [2024-06-28 00:54:17,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:17,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881901041] [2024-06-28 00:54:17,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:17,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:19,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:19,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881901041] [2024-06-28 00:54:19,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881901041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:19,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:19,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:54:19,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11506123] [2024-06-28 00:54:19,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:19,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:54:19,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:19,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:54:19,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:54:19,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:19,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 316 transitions, 5086 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:54:19,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:19,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:19,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:20,904 INFO L124 PetriNetUnfolderBase]: 1802/3271 cut-off events. [2024-06-28 00:54:20,904 INFO L125 PetriNetUnfolderBase]: For 80212/80212 co-relation queries the response was YES. [2024-06-28 00:54:20,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23921 conditions, 3271 events. 1802/3271 cut-off events. For 80212/80212 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 20795 event pairs, 680 based on Foata normal form. 2/3140 useless extension candidates. Maximal degree in co-relation 23794. Up to 2785 conditions per place. [2024-06-28 00:54:20,949 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 319 selfloop transitions, 23 changer transitions 0/348 dead transitions. [2024-06-28 00:54:20,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 348 transitions, 6080 flow [2024-06-28 00:54:20,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:20,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:20,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 00:54:20,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188034188034188 [2024-06-28 00:54:20,951 INFO L175 Difference]: Start difference. First operand has 260 places, 316 transitions, 5086 flow. Second operand 9 states and 147 transitions. [2024-06-28 00:54:20,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 348 transitions, 6080 flow [2024-06-28 00:54:21,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 348 transitions, 5938 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:21,196 INFO L231 Difference]: Finished difference. Result has 261 places, 319 transitions, 5084 flow [2024-06-28 00:54:21,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4944, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5084, PETRI_PLACES=261, PETRI_TRANSITIONS=319} [2024-06-28 00:54:21,197 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 218 predicate places. [2024-06-28 00:54:21,197 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 319 transitions, 5084 flow [2024-06-28 00:54:21,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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 00:54:21,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:21,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:21,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:54:21,198 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:21,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:21,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1475007210, now seen corresponding path program 1 times [2024-06-28 00:54:21,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:21,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792697705] [2024-06-28 00:54:21,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:21,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:24,457 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 00:54:24,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:24,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792697705] [2024-06-28 00:54:24,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792697705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:24,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:24,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:24,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747822239] [2024-06-28 00:54:24,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:24,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:24,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:24,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:24,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:24,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:24,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 319 transitions, 5084 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:24,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:24,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:24,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:25,655 INFO L124 PetriNetUnfolderBase]: 1806/3255 cut-off events. [2024-06-28 00:54:25,655 INFO L125 PetriNetUnfolderBase]: For 80578/80578 co-relation queries the response was YES. [2024-06-28 00:54:25,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23923 conditions, 3255 events. 1806/3255 cut-off events. For 80578/80578 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20606 event pairs, 678 based on Foata normal form. 2/3132 useless extension candidates. Maximal degree in co-relation 23796. Up to 2781 conditions per place. [2024-06-28 00:54:25,692 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 324 selfloop transitions, 25 changer transitions 0/355 dead transitions. [2024-06-28 00:54:25,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 355 transitions, 6102 flow [2024-06-28 00:54:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 00:54:25,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2024-06-28 00:54:25,694 INFO L175 Difference]: Start difference. First operand has 261 places, 319 transitions, 5084 flow. Second operand 10 states and 162 transitions. [2024-06-28 00:54:25,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 355 transitions, 6102 flow [2024-06-28 00:54:25,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 355 transitions, 5986 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:25,948 INFO L231 Difference]: Finished difference. Result has 264 places, 321 transitions, 5075 flow [2024-06-28 00:54:25,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4968, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5075, PETRI_PLACES=264, PETRI_TRANSITIONS=321} [2024-06-28 00:54:25,949 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 221 predicate places. [2024-06-28 00:54:25,949 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 321 transitions, 5075 flow [2024-06-28 00:54:25,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:25,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:25,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:25,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:54:25,950 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:25,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1094988369, now seen corresponding path program 1 times [2024-06-28 00:54:25,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:25,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354469581] [2024-06-28 00:54:25,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:25,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:26,028 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 00:54:26,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:26,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354469581] [2024-06-28 00:54:26,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354469581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:26,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:26,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:54:26,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774607278] [2024-06-28 00:54:26,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:26,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:54:26,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:26,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:54:26,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:54:26,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2024-06-28 00:54:26,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 321 transitions, 5075 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:26,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:26,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2024-06-28 00:54:26,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:26,497 INFO L124 PetriNetUnfolderBase]: 929/1672 cut-off events. [2024-06-28 00:54:26,497 INFO L125 PetriNetUnfolderBase]: For 40108/40138 co-relation queries the response was YES. [2024-06-28 00:54:26,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12000 conditions, 1672 events. 929/1672 cut-off events. For 40108/40138 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8981 event pairs, 333 based on Foata normal form. 143/1756 useless extension candidates. Maximal degree in co-relation 11889. Up to 882 conditions per place. [2024-06-28 00:54:26,511 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 131 selfloop transitions, 27 changer transitions 0/179 dead transitions. [2024-06-28 00:54:26,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 179 transitions, 3215 flow [2024-06-28 00:54:26,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:54:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:54:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2024-06-28 00:54:26,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2024-06-28 00:54:26,513 INFO L175 Difference]: Start difference. First operand has 264 places, 321 transitions, 5075 flow. Second operand 4 states and 100 transitions. [2024-06-28 00:54:26,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 179 transitions, 3215 flow [2024-06-28 00:54:26,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 179 transitions, 2293 flow, removed 85 selfloop flow, removed 87 redundant places. [2024-06-28 00:54:26,628 INFO L231 Difference]: Finished difference. Result has 181 places, 159 transitions, 1893 flow [2024-06-28 00:54:26,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1893, PETRI_PLACES=181, PETRI_TRANSITIONS=159} [2024-06-28 00:54:26,629 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 138 predicate places. [2024-06-28 00:54:26,629 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 159 transitions, 1893 flow [2024-06-28 00:54:26,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:26,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:26,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:26,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:54:26,629 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:26,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:26,630 INFO L85 PathProgramCache]: Analyzing trace with hash -982278260, now seen corresponding path program 1 times [2024-06-28 00:54:26,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:26,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834537270] [2024-06-28 00:54:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:28,699 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 00:54:28,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:28,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834537270] [2024-06-28 00:54:28,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834537270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:28,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:28,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:28,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737081301] [2024-06-28 00:54:28,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:28,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:28,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:28,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:28,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:28,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:28,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 159 transitions, 1893 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:28,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:28,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:28,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:29,458 INFO L124 PetriNetUnfolderBase]: 865/1546 cut-off events. [2024-06-28 00:54:29,459 INFO L125 PetriNetUnfolderBase]: For 33960/33960 co-relation queries the response was YES. [2024-06-28 00:54:29,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9970 conditions, 1546 events. 865/1546 cut-off events. For 33960/33960 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7625 event pairs, 216 based on Foata normal form. 2/1487 useless extension candidates. Maximal degree in co-relation 9891. Up to 1326 conditions per place. [2024-06-28 00:54:29,472 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 147 selfloop transitions, 30 changer transitions 0/184 dead transitions. [2024-06-28 00:54:29,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 184 transitions, 2375 flow [2024-06-28 00:54:29,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:29,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:29,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:54:29,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045584045584046 [2024-06-28 00:54:29,474 INFO L175 Difference]: Start difference. First operand has 181 places, 159 transitions, 1893 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:54:29,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 184 transitions, 2375 flow [2024-06-28 00:54:29,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 184 transitions, 2355 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 00:54:29,551 INFO L231 Difference]: Finished difference. Result has 186 places, 161 transitions, 1985 flow [2024-06-28 00:54:29,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1985, PETRI_PLACES=186, PETRI_TRANSITIONS=161} [2024-06-28 00:54:29,551 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 143 predicate places. [2024-06-28 00:54:29,551 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 161 transitions, 1985 flow [2024-06-28 00:54:29,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:29,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:29,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:29,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:54:29,552 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:29,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash 348468536, now seen corresponding path program 2 times [2024-06-28 00:54:29,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:29,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202588975] [2024-06-28 00:54:29,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:29,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:31,140 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 00:54:31,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:31,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202588975] [2024-06-28 00:54:31,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202588975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:31,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:31,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:54:31,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405717874] [2024-06-28 00:54:31,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:31,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:54:31,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:31,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:54:31,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:54:31,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:31,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 161 transitions, 1985 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:31,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:31,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:31,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:31,875 INFO L124 PetriNetUnfolderBase]: 895/1609 cut-off events. [2024-06-28 00:54:31,875 INFO L125 PetriNetUnfolderBase]: For 36919/36919 co-relation queries the response was YES. [2024-06-28 00:54:31,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10401 conditions, 1609 events. 895/1609 cut-off events. For 36919/36919 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8143 event pairs, 244 based on Foata normal form. 2/1549 useless extension candidates. Maximal degree in co-relation 10321. Up to 1371 conditions per place. [2024-06-28 00:54:31,887 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 157 selfloop transitions, 27 changer transitions 0/191 dead transitions. [2024-06-28 00:54:31,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 191 transitions, 2513 flow [2024-06-28 00:54:31,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:54:31,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045584045584046 [2024-06-28 00:54:31,888 INFO L175 Difference]: Start difference. First operand has 186 places, 161 transitions, 1985 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:54:31,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 191 transitions, 2513 flow [2024-06-28 00:54:31,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 191 transitions, 2419 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:31,966 INFO L231 Difference]: Finished difference. Result has 189 places, 165 transitions, 2018 flow [2024-06-28 00:54:31,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2018, PETRI_PLACES=189, PETRI_TRANSITIONS=165} [2024-06-28 00:54:31,966 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 146 predicate places. [2024-06-28 00:54:31,967 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 165 transitions, 2018 flow [2024-06-28 00:54:31,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:31,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:31,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:31,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:54:31,967 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:31,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:31,968 INFO L85 PathProgramCache]: Analyzing trace with hash -671656704, now seen corresponding path program 3 times [2024-06-28 00:54:31,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:31,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328563398] [2024-06-28 00:54:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:31,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:33,658 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 00:54:33,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:33,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328563398] [2024-06-28 00:54:33,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328563398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:33,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:33,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:54:33,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859928649] [2024-06-28 00:54:33,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:33,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:54:33,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:33,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:54:33,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:54:33,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:33,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 165 transitions, 2018 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:33,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:33,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:33,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:34,431 INFO L124 PetriNetUnfolderBase]: 925/1671 cut-off events. [2024-06-28 00:54:34,432 INFO L125 PetriNetUnfolderBase]: For 38648/38648 co-relation queries the response was YES. [2024-06-28 00:54:34,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10766 conditions, 1671 events. 925/1671 cut-off events. For 38648/38648 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8597 event pairs, 276 based on Foata normal form. 2/1609 useless extension candidates. Maximal degree in co-relation 10684. Up to 1418 conditions per place. [2024-06-28 00:54:34,446 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 158 selfloop transitions, 29 changer transitions 0/194 dead transitions. [2024-06-28 00:54:34,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 194 transitions, 2548 flow [2024-06-28 00:54:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:34,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:54:34,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017094017094017 [2024-06-28 00:54:34,447 INFO L175 Difference]: Start difference. First operand has 189 places, 165 transitions, 2018 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:54:34,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 194 transitions, 2548 flow [2024-06-28 00:54:34,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 194 transitions, 2457 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:34,534 INFO L231 Difference]: Finished difference. Result has 192 places, 167 transitions, 2015 flow [2024-06-28 00:54:34,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2015, PETRI_PLACES=192, PETRI_TRANSITIONS=167} [2024-06-28 00:54:34,535 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 149 predicate places. [2024-06-28 00:54:34,535 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 167 transitions, 2015 flow [2024-06-28 00:54:34,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:34,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:34,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:34,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:54:34,536 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:34,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:34,536 INFO L85 PathProgramCache]: Analyzing trace with hash -177203248, now seen corresponding path program 4 times [2024-06-28 00:54:34,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:34,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435624345] [2024-06-28 00:54:34,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:34,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:36,108 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 00:54:36,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:36,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435624345] [2024-06-28 00:54:36,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435624345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:36,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:36,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:54:36,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608586447] [2024-06-28 00:54:36,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:36,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:54:36,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:36,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:54:36,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:54:36,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:36,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 167 transitions, 2015 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:36,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:36,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:36,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:36,889 INFO L124 PetriNetUnfolderBase]: 972/1760 cut-off events. [2024-06-28 00:54:36,889 INFO L125 PetriNetUnfolderBase]: For 40852/40852 co-relation queries the response was YES. [2024-06-28 00:54:36,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11183 conditions, 1760 events. 972/1760 cut-off events. For 40852/40852 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9256 event pairs, 205 based on Foata normal form. 2/1692 useless extension candidates. Maximal degree in co-relation 11100. Up to 1441 conditions per place. [2024-06-28 00:54:36,906 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 166 selfloop transitions, 32 changer transitions 0/205 dead transitions. [2024-06-28 00:54:36,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 205 transitions, 2631 flow [2024-06-28 00:54:36,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:36,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 00:54:36,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-28 00:54:36,907 INFO L175 Difference]: Start difference. First operand has 192 places, 167 transitions, 2015 flow. Second operand 9 states and 143 transitions. [2024-06-28 00:54:36,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 205 transitions, 2631 flow [2024-06-28 00:54:37,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 205 transitions, 2571 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:37,024 INFO L231 Difference]: Finished difference. Result has 196 places, 176 transitions, 2125 flow [2024-06-28 00:54:37,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2125, PETRI_PLACES=196, PETRI_TRANSITIONS=176} [2024-06-28 00:54:37,025 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 153 predicate places. [2024-06-28 00:54:37,025 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 176 transitions, 2125 flow [2024-06-28 00:54:37,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:37,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:37,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:37,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:54:37,026 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:37,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:37,026 INFO L85 PathProgramCache]: Analyzing trace with hash -316694074, now seen corresponding path program 1 times [2024-06-28 00:54:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:37,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110949959] [2024-06-28 00:54:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:37,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:38,841 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 00:54:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:38,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110949959] [2024-06-28 00:54:38,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110949959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:38,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:38,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:54:38,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794623639] [2024-06-28 00:54:38,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:38,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:54:38,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:38,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:54:38,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:54:38,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:38,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 176 transitions, 2125 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:38,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:38,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:38,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:39,578 INFO L124 PetriNetUnfolderBase]: 983/1780 cut-off events. [2024-06-28 00:54:39,578 INFO L125 PetriNetUnfolderBase]: For 43464/43464 co-relation queries the response was YES. [2024-06-28 00:54:39,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11618 conditions, 1780 events. 983/1780 cut-off events. For 43464/43464 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9394 event pairs, 280 based on Foata normal form. 2/1712 useless extension candidates. Maximal degree in co-relation 11532. Up to 1521 conditions per place. [2024-06-28 00:54:39,595 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 163 selfloop transitions, 33 changer transitions 0/203 dead transitions. [2024-06-28 00:54:39,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 203 transitions, 2659 flow [2024-06-28 00:54:39,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:39,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 00:54:39,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871794871794872 [2024-06-28 00:54:39,597 INFO L175 Difference]: Start difference. First operand has 196 places, 176 transitions, 2125 flow. Second operand 10 states and 151 transitions. [2024-06-28 00:54:39,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 203 transitions, 2659 flow [2024-06-28 00:54:39,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 203 transitions, 2600 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 00:54:39,715 INFO L231 Difference]: Finished difference. Result has 201 places, 178 transitions, 2178 flow [2024-06-28 00:54:39,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2178, PETRI_PLACES=201, PETRI_TRANSITIONS=178} [2024-06-28 00:54:39,716 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 158 predicate places. [2024-06-28 00:54:39,716 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 178 transitions, 2178 flow [2024-06-28 00:54:39,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:39,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:39,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:39,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:54:39,717 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:39,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:39,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1864861478, now seen corresponding path program 5 times [2024-06-28 00:54:39,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:39,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488654989] [2024-06-28 00:54:39,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:39,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:41,599 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 00:54:41,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:41,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488654989] [2024-06-28 00:54:41,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488654989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:41,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:41,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:54:41,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809828981] [2024-06-28 00:54:41,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:41,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:54:41,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:41,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:54:41,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:54:41,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:41,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 178 transitions, 2178 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:41,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:41,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:41,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:42,348 INFO L124 PetriNetUnfolderBase]: 1053/1918 cut-off events. [2024-06-28 00:54:42,348 INFO L125 PetriNetUnfolderBase]: For 45638/45638 co-relation queries the response was YES. [2024-06-28 00:54:42,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12438 conditions, 1918 events. 1053/1918 cut-off events. For 45638/45638 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10442 event pairs, 240 based on Foata normal form. 2/1843 useless extension candidates. Maximal degree in co-relation 12351. Up to 1601 conditions per place. [2024-06-28 00:54:42,365 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 175 selfloop transitions, 33 changer transitions 0/215 dead transitions. [2024-06-28 00:54:42,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 215 transitions, 2832 flow [2024-06-28 00:54:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:42,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 00:54:42,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131054131054131 [2024-06-28 00:54:42,367 INFO L175 Difference]: Start difference. First operand has 201 places, 178 transitions, 2178 flow. Second operand 9 states and 145 transitions. [2024-06-28 00:54:42,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 215 transitions, 2832 flow [2024-06-28 00:54:42,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 215 transitions, 2740 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:42,490 INFO L231 Difference]: Finished difference. Result has 203 places, 187 transitions, 2278 flow [2024-06-28 00:54:42,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2278, PETRI_PLACES=203, PETRI_TRANSITIONS=187} [2024-06-28 00:54:42,490 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 160 predicate places. [2024-06-28 00:54:42,490 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 187 transitions, 2278 flow [2024-06-28 00:54:42,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:42,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:42,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:42,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:54:42,491 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:42,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:42,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1861967814, now seen corresponding path program 2 times [2024-06-28 00:54:42,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:42,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798410278] [2024-06-28 00:54:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:42,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:44,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:44,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798410278] [2024-06-28 00:54:44,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798410278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:44,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:44,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:44,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82898933] [2024-06-28 00:54:44,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:44,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:44,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:44,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:44,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:44,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:44,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 187 transitions, 2278 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:44,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:44,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:44,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:45,162 INFO L124 PetriNetUnfolderBase]: 1067/1940 cut-off events. [2024-06-28 00:54:45,162 INFO L125 PetriNetUnfolderBase]: For 47803/47803 co-relation queries the response was YES. [2024-06-28 00:54:45,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12711 conditions, 1940 events. 1067/1940 cut-off events. For 47803/47803 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10575 event pairs, 267 based on Foata normal form. 2/1863 useless extension candidates. Maximal degree in co-relation 12622. Up to 1668 conditions per place. [2024-06-28 00:54:45,179 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 172 selfloop transitions, 36 changer transitions 0/215 dead transitions. [2024-06-28 00:54:45,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 215 transitions, 2842 flow [2024-06-28 00:54:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:54:45,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2024-06-28 00:54:45,180 INFO L175 Difference]: Start difference. First operand has 203 places, 187 transitions, 2278 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:54:45,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 215 transitions, 2842 flow [2024-06-28 00:54:45,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 215 transitions, 2780 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:45,306 INFO L231 Difference]: Finished difference. Result has 207 places, 191 transitions, 2356 flow [2024-06-28 00:54:45,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2356, PETRI_PLACES=207, PETRI_TRANSITIONS=191} [2024-06-28 00:54:45,307 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 164 predicate places. [2024-06-28 00:54:45,307 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 191 transitions, 2356 flow [2024-06-28 00:54:45,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:45,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:45,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:45,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:54:45,308 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:45,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:45,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1745552274, now seen corresponding path program 3 times [2024-06-28 00:54:45,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:45,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374909603] [2024-06-28 00:54:45,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:45,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:47,381 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 00:54:47,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:47,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374909603] [2024-06-28 00:54:47,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374909603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:47,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:47,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:47,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131773173] [2024-06-28 00:54:47,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:47,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:47,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:47,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:47,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:47,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:47,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 191 transitions, 2356 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:47,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:47,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:47,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:48,333 INFO L124 PetriNetUnfolderBase]: 1078/1957 cut-off events. [2024-06-28 00:54:48,334 INFO L125 PetriNetUnfolderBase]: For 49203/49203 co-relation queries the response was YES. [2024-06-28 00:54:48,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12885 conditions, 1957 events. 1078/1957 cut-off events. For 49203/49203 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10651 event pairs, 256 based on Foata normal form. 2/1879 useless extension candidates. Maximal degree in co-relation 12795. Up to 1590 conditions per place. [2024-06-28 00:54:48,352 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 163 selfloop transitions, 49 changer transitions 0/219 dead transitions. [2024-06-28 00:54:48,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 219 transitions, 2938 flow [2024-06-28 00:54:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:48,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:48,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 00:54:48,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:54:48,354 INFO L175 Difference]: Start difference. First operand has 207 places, 191 transitions, 2356 flow. Second operand 10 states and 156 transitions. [2024-06-28 00:54:48,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 219 transitions, 2938 flow [2024-06-28 00:54:48,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 219 transitions, 2844 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:48,480 INFO L231 Difference]: Finished difference. Result has 209 places, 193 transitions, 2413 flow [2024-06-28 00:54:48,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2413, PETRI_PLACES=209, PETRI_TRANSITIONS=193} [2024-06-28 00:54:48,481 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 166 predicate places. [2024-06-28 00:54:48,481 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 193 transitions, 2413 flow [2024-06-28 00:54:48,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:48,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:48,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:48,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:54:48,482 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:48,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:48,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1745543594, now seen corresponding path program 1 times [2024-06-28 00:54:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:48,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832115087] [2024-06-28 00:54:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:48,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:50,491 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 00:54:50,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:50,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832115087] [2024-06-28 00:54:50,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832115087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:50,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:50,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:50,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367534786] [2024-06-28 00:54:50,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:50,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:50,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:50,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:50,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:50,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:50,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 193 transitions, 2413 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:50,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:50,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:50,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:51,307 INFO L124 PetriNetUnfolderBase]: 1083/1967 cut-off events. [2024-06-28 00:54:51,308 INFO L125 PetriNetUnfolderBase]: For 49978/49978 co-relation queries the response was YES. [2024-06-28 00:54:51,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13065 conditions, 1967 events. 1083/1967 cut-off events. For 49978/49978 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10768 event pairs, 381 based on Foata normal form. 1/1889 useless extension candidates. Maximal degree in co-relation 12974. Up to 1719 conditions per place. [2024-06-28 00:54:51,327 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 178 selfloop transitions, 32 changer transitions 0/217 dead transitions. [2024-06-28 00:54:51,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 217 transitions, 2993 flow [2024-06-28 00:54:51,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:51,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:51,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 00:54:51,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37948717948717947 [2024-06-28 00:54:51,328 INFO L175 Difference]: Start difference. First operand has 209 places, 193 transitions, 2413 flow. Second operand 10 states and 148 transitions. [2024-06-28 00:54:51,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 217 transitions, 2993 flow [2024-06-28 00:54:51,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 217 transitions, 2862 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:51,462 INFO L231 Difference]: Finished difference. Result has 211 places, 195 transitions, 2404 flow [2024-06-28 00:54:51,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2404, PETRI_PLACES=211, PETRI_TRANSITIONS=195} [2024-06-28 00:54:51,462 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 168 predicate places. [2024-06-28 00:54:51,462 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 195 transitions, 2404 flow [2024-06-28 00:54:51,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:51,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:51,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:51,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:54:51,463 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:51,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1745789858, now seen corresponding path program 6 times [2024-06-28 00:54:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:51,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678556684] [2024-06-28 00:54:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:51,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:53,169 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 00:54:53,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:53,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678556684] [2024-06-28 00:54:53,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678556684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:53,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:53,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:53,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667012734] [2024-06-28 00:54:53,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:53,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:53,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:53,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:53,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:53,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:53,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 195 transitions, 2404 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:53,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:53,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:53,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:53,987 INFO L124 PetriNetUnfolderBase]: 1103/2007 cut-off events. [2024-06-28 00:54:53,987 INFO L125 PetriNetUnfolderBase]: For 53093/53093 co-relation queries the response was YES. [2024-06-28 00:54:54,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13293 conditions, 2007 events. 1103/2007 cut-off events. For 53093/53093 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11022 event pairs, 268 based on Foata normal form. 2/1928 useless extension candidates. Maximal degree in co-relation 13201. Up to 1696 conditions per place. [2024-06-28 00:54:54,015 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 179 selfloop transitions, 36 changer transitions 0/222 dead transitions. [2024-06-28 00:54:54,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 222 transitions, 3004 flow [2024-06-28 00:54:54,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:54,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:54,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 00:54:54,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 00:54:54,016 INFO L175 Difference]: Start difference. First operand has 211 places, 195 transitions, 2404 flow. Second operand 9 states and 144 transitions. [2024-06-28 00:54:54,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 222 transitions, 3004 flow [2024-06-28 00:54:54,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 222 transitions, 2908 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:54,159 INFO L231 Difference]: Finished difference. Result has 212 places, 196 transitions, 2408 flow [2024-06-28 00:54:54,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2308, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2408, PETRI_PLACES=212, PETRI_TRANSITIONS=196} [2024-06-28 00:54:54,160 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 169 predicate places. [2024-06-28 00:54:54,161 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 196 transitions, 2408 flow [2024-06-28 00:54:54,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:54,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:54,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:54,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:54:54,161 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:54,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1745543904, now seen corresponding path program 4 times [2024-06-28 00:54:54,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:54,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421186847] [2024-06-28 00:54:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:54,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:56,288 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 00:54:56,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:56,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421186847] [2024-06-28 00:54:56,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421186847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:56,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:56,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:56,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811453533] [2024-06-28 00:54:56,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:56,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:56,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:56,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:56,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:56,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:56,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 196 transitions, 2408 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:56,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:56,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:56,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:57,244 INFO L124 PetriNetUnfolderBase]: 1129/2047 cut-off events. [2024-06-28 00:54:57,244 INFO L125 PetriNetUnfolderBase]: For 58243/58243 co-relation queries the response was YES. [2024-06-28 00:54:57,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13774 conditions, 2047 events. 1129/2047 cut-off events. For 58243/58243 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11262 event pairs, 264 based on Foata normal form. 2/1965 useless extension candidates. Maximal degree in co-relation 13681. Up to 1598 conditions per place. [2024-06-28 00:54:57,260 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 160 selfloop transitions, 61 changer transitions 0/228 dead transitions. [2024-06-28 00:54:57,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 228 transitions, 3164 flow [2024-06-28 00:54:57,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:57,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:54:57,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076923076923077 [2024-06-28 00:54:57,262 INFO L175 Difference]: Start difference. First operand has 212 places, 196 transitions, 2408 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:54:57,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 228 transitions, 3164 flow [2024-06-28 00:54:57,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 228 transitions, 3082 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:57,401 INFO L231 Difference]: Finished difference. Result has 215 places, 200 transitions, 2554 flow [2024-06-28 00:54:57,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2554, PETRI_PLACES=215, PETRI_TRANSITIONS=200} [2024-06-28 00:54:57,403 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 172 predicate places. [2024-06-28 00:54:57,403 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 200 transitions, 2554 flow [2024-06-28 00:54:57,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:57,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:57,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:57,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:54:57,404 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:54:57,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:57,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1745782914, now seen corresponding path program 5 times [2024-06-28 00:54:57,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:57,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191427661] [2024-06-28 00:54:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:57,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:59,360 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 00:54:59,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:59,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191427661] [2024-06-28 00:54:59,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191427661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:59,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:59,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:59,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57679476] [2024-06-28 00:54:59,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:59,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:59,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:59,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:59,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:59,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:54:59,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 200 transitions, 2554 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:59,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:59,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:54:59,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:00,242 INFO L124 PetriNetUnfolderBase]: 1125/2041 cut-off events. [2024-06-28 00:55:00,242 INFO L125 PetriNetUnfolderBase]: For 57224/57224 co-relation queries the response was YES. [2024-06-28 00:55:00,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13728 conditions, 2041 events. 1125/2041 cut-off events. For 57224/57224 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11237 event pairs, 267 based on Foata normal form. 2/1959 useless extension candidates. Maximal degree in co-relation 13634. Up to 1728 conditions per place. [2024-06-28 00:55:00,262 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 179 selfloop transitions, 39 changer transitions 0/225 dead transitions. [2024-06-28 00:55:00,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 225 transitions, 3098 flow [2024-06-28 00:55:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:00,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 00:55:00,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39487179487179486 [2024-06-28 00:55:00,264 INFO L175 Difference]: Start difference. First operand has 215 places, 200 transitions, 2554 flow. Second operand 10 states and 154 transitions. [2024-06-28 00:55:00,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 225 transitions, 3098 flow [2024-06-28 00:55:00,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 225 transitions, 2971 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 00:55:00,456 INFO L231 Difference]: Finished difference. Result has 219 places, 200 transitions, 2510 flow [2024-06-28 00:55:00,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2510, PETRI_PLACES=219, PETRI_TRANSITIONS=200} [2024-06-28 00:55:00,457 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 176 predicate places. [2024-06-28 00:55:00,457 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 200 transitions, 2510 flow [2024-06-28 00:55:00,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:00,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:00,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:00,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:55:00,458 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:00,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:00,458 INFO L85 PathProgramCache]: Analyzing trace with hash 393967040, now seen corresponding path program 1 times [2024-06-28 00:55:00,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:00,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92685017] [2024-06-28 00:55:00,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:00,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:03,077 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 00:55:03,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:03,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92685017] [2024-06-28 00:55:03,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92685017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:03,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:03,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:03,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080170974] [2024-06-28 00:55:03,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:03,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:03,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:03,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:03,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:03,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:03,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 200 transitions, 2510 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:03,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:03,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:03,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:03,869 INFO L124 PetriNetUnfolderBase]: 1137/2054 cut-off events. [2024-06-28 00:55:03,870 INFO L125 PetriNetUnfolderBase]: For 58816/58816 co-relation queries the response was YES. [2024-06-28 00:55:03,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13828 conditions, 2054 events. 1137/2054 cut-off events. For 58816/58816 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11434 event pairs, 326 based on Foata normal form. 2/1969 useless extension candidates. Maximal degree in co-relation 13732. Up to 1814 conditions per place. [2024-06-28 00:55:03,890 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 194 selfloop transitions, 26 changer transitions 0/227 dead transitions. [2024-06-28 00:55:03,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 227 transitions, 3124 flow [2024-06-28 00:55:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:55:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:55:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 00:55:03,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.372960372960373 [2024-06-28 00:55:03,895 INFO L175 Difference]: Start difference. First operand has 219 places, 200 transitions, 2510 flow. Second operand 11 states and 160 transitions. [2024-06-28 00:55:03,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 227 transitions, 3124 flow [2024-06-28 00:55:04,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 227 transitions, 3010 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 00:55:04,110 INFO L231 Difference]: Finished difference. Result has 221 places, 202 transitions, 2499 flow [2024-06-28 00:55:04,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2499, PETRI_PLACES=221, PETRI_TRANSITIONS=202} [2024-06-28 00:55:04,111 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 178 predicate places. [2024-06-28 00:55:04,111 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 202 transitions, 2499 flow [2024-06-28 00:55:04,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:04,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:04,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:04,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:55:04,112 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:04,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1166463644, now seen corresponding path program 7 times [2024-06-28 00:55:04,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:04,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176592108] [2024-06-28 00:55:04,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:04,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:05,874 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 00:55:05,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:05,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176592108] [2024-06-28 00:55:05,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176592108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:05,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:05,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:55:05,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818031919] [2024-06-28 00:55:05,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:05,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:55:05,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:05,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:55:05,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:55:05,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:05,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 202 transitions, 2499 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:05,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:05,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:05,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:06,748 INFO L124 PetriNetUnfolderBase]: 1157/2104 cut-off events. [2024-06-28 00:55:06,749 INFO L125 PetriNetUnfolderBase]: For 61364/61364 co-relation queries the response was YES. [2024-06-28 00:55:06,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14106 conditions, 2104 events. 1157/2104 cut-off events. For 61364/61364 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11687 event pairs, 221 based on Foata normal form. 2/2018 useless extension candidates. Maximal degree in co-relation 14009. Up to 1613 conditions per place. [2024-06-28 00:55:06,768 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 179 selfloop transitions, 41 changer transitions 0/227 dead transitions. [2024-06-28 00:55:06,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 227 transitions, 3107 flow [2024-06-28 00:55:06,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:55:06,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:55:06,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 00:55:06,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 00:55:06,769 INFO L175 Difference]: Start difference. First operand has 221 places, 202 transitions, 2499 flow. Second operand 8 states and 128 transitions. [2024-06-28 00:55:06,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 227 transitions, 3107 flow [2024-06-28 00:55:06,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 227 transitions, 3024 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 00:55:06,929 INFO L231 Difference]: Finished difference. Result has 220 places, 203 transitions, 2540 flow [2024-06-28 00:55:06,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2540, PETRI_PLACES=220, PETRI_TRANSITIONS=203} [2024-06-28 00:55:06,930 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 177 predicate places. [2024-06-28 00:55:06,930 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 203 transitions, 2540 flow [2024-06-28 00:55:06,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:06,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:06,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:06,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:55:06,931 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:06,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:06,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1821463914, now seen corresponding path program 8 times [2024-06-28 00:55:06,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:06,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588135367] [2024-06-28 00:55:06,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:06,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:08,796 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 00:55:08,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:08,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588135367] [2024-06-28 00:55:08,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588135367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:08,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:08,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:08,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518510252] [2024-06-28 00:55:08,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:08,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:08,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:08,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:08,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:08,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 203 transitions, 2540 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:08,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:08,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:08,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:09,629 INFO L124 PetriNetUnfolderBase]: 1177/2149 cut-off events. [2024-06-28 00:55:09,630 INFO L125 PetriNetUnfolderBase]: For 65087/65087 co-relation queries the response was YES. [2024-06-28 00:55:09,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14646 conditions, 2149 events. 1177/2149 cut-off events. For 65087/65087 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12056 event pairs, 339 based on Foata normal form. 2/2058 useless extension candidates. Maximal degree in co-relation 14548. Up to 1779 conditions per place. [2024-06-28 00:55:09,658 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 188 selfloop transitions, 32 changer transitions 0/227 dead transitions. [2024-06-28 00:55:09,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 227 transitions, 3144 flow [2024-06-28 00:55:09,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:55:09,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:55:09,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 00:55:09,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40705128205128205 [2024-06-28 00:55:09,659 INFO L175 Difference]: Start difference. First operand has 220 places, 203 transitions, 2540 flow. Second operand 8 states and 127 transitions. [2024-06-28 00:55:09,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 227 transitions, 3144 flow [2024-06-28 00:55:09,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 227 transitions, 3054 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:55:09,817 INFO L231 Difference]: Finished difference. Result has 222 places, 204 transitions, 2552 flow [2024-06-28 00:55:09,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2552, PETRI_PLACES=222, PETRI_TRANSITIONS=204} [2024-06-28 00:55:09,817 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 179 predicate places. [2024-06-28 00:55:09,817 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 204 transitions, 2552 flow [2024-06-28 00:55:09,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:09,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:09,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:09,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:55:09,818 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:09,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:09,818 INFO L85 PathProgramCache]: Analyzing trace with hash 774044380, now seen corresponding path program 6 times [2024-06-28 00:55:09,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:09,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625942857] [2024-06-28 00:55:09,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:09,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:11,626 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 00:55:11,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:11,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625942857] [2024-06-28 00:55:11,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625942857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:11,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:11,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:11,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031803819] [2024-06-28 00:55:11,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:11,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:11,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:11,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:11,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:11,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:11,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 204 transitions, 2552 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:11,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:11,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:11,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:12,463 INFO L124 PetriNetUnfolderBase]: 1188/2167 cut-off events. [2024-06-28 00:55:12,463 INFO L125 PetriNetUnfolderBase]: For 63071/63071 co-relation queries the response was YES. [2024-06-28 00:55:12,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14684 conditions, 2167 events. 1188/2167 cut-off events. For 63071/63071 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 12165 event pairs, 339 based on Foata normal form. 2/2076 useless extension candidates. Maximal degree in co-relation 14585. Up to 1792 conditions per place. [2024-06-28 00:55:12,481 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 177 selfloop transitions, 44 changer transitions 0/228 dead transitions. [2024-06-28 00:55:12,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 228 transitions, 3144 flow [2024-06-28 00:55:12,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 00:55:12,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903133903133903 [2024-06-28 00:55:12,482 INFO L175 Difference]: Start difference. First operand has 222 places, 204 transitions, 2552 flow. Second operand 9 states and 137 transitions. [2024-06-28 00:55:12,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 228 transitions, 3144 flow [2024-06-28 00:55:12,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 228 transitions, 3074 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 00:55:12,646 INFO L231 Difference]: Finished difference. Result has 225 places, 206 transitions, 2640 flow [2024-06-28 00:55:12,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2482, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2640, PETRI_PLACES=225, PETRI_TRANSITIONS=206} [2024-06-28 00:55:12,647 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 182 predicate places. [2024-06-28 00:55:12,647 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 206 transitions, 2640 flow [2024-06-28 00:55:12,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:12,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:12,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:12,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:55:12,647 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:12,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:12,648 INFO L85 PathProgramCache]: Analyzing trace with hash 890222336, now seen corresponding path program 9 times [2024-06-28 00:55:12,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:12,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206412593] [2024-06-28 00:55:12,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:12,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:14,402 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 00:55:14,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:14,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206412593] [2024-06-28 00:55:14,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206412593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:14,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:14,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:14,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468642259] [2024-06-28 00:55:14,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:14,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:14,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:14,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:14,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:14,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:14,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 206 transitions, 2640 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:14,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:14,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:14,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:15,223 INFO L124 PetriNetUnfolderBase]: 1208/2205 cut-off events. [2024-06-28 00:55:15,224 INFO L125 PetriNetUnfolderBase]: For 63213/63213 co-relation queries the response was YES. [2024-06-28 00:55:15,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14976 conditions, 2205 events. 1208/2205 cut-off events. For 63213/63213 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12417 event pairs, 274 based on Foata normal form. 2/2113 useless extension candidates. Maximal degree in co-relation 14876. Up to 1808 conditions per place. [2024-06-28 00:55:15,246 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 184 selfloop transitions, 39 changer transitions 0/230 dead transitions. [2024-06-28 00:55:15,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 230 transitions, 3248 flow [2024-06-28 00:55:15,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:55:15,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:55:15,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 00:55:15,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 00:55:15,247 INFO L175 Difference]: Start difference. First operand has 225 places, 206 transitions, 2640 flow. Second operand 8 states and 128 transitions. [2024-06-28 00:55:15,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 230 transitions, 3248 flow [2024-06-28 00:55:15,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 230 transitions, 3128 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:15,423 INFO L231 Difference]: Finished difference. Result has 226 places, 207 transitions, 2628 flow [2024-06-28 00:55:15,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2520, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2628, PETRI_PLACES=226, PETRI_TRANSITIONS=207} [2024-06-28 00:55:15,423 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 183 predicate places. [2024-06-28 00:55:15,423 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 207 transitions, 2628 flow [2024-06-28 00:55:15,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:15,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:15,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:15,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:55:15,424 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:15,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:15,424 INFO L85 PathProgramCache]: Analyzing trace with hash -916846456, now seen corresponding path program 7 times [2024-06-28 00:55:15,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:15,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023711070] [2024-06-28 00:55:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:15,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:17,150 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 00:55:17,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:17,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023711070] [2024-06-28 00:55:17,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023711070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:17,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:17,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:17,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815911157] [2024-06-28 00:55:17,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:17,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:17,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:17,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:17,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:17,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:17,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 207 transitions, 2628 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:17,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:17,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:17,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:17,967 INFO L124 PetriNetUnfolderBase]: 1219/2222 cut-off events. [2024-06-28 00:55:17,967 INFO L125 PetriNetUnfolderBase]: For 61959/61959 co-relation queries the response was YES. [2024-06-28 00:55:17,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15008 conditions, 2222 events. 1219/2222 cut-off events. For 61959/61959 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12509 event pairs, 278 based on Foata normal form. 2/2127 useless extension candidates. Maximal degree in co-relation 14907. Up to 1821 conditions per place. [2024-06-28 00:55:17,989 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 179 selfloop transitions, 45 changer transitions 0/231 dead transitions. [2024-06-28 00:55:17,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 231 transitions, 3224 flow [2024-06-28 00:55:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:17,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:17,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 00:55:17,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39316239316239315 [2024-06-28 00:55:17,991 INFO L175 Difference]: Start difference. First operand has 226 places, 207 transitions, 2628 flow. Second operand 9 states and 138 transitions. [2024-06-28 00:55:17,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 231 transitions, 3224 flow [2024-06-28 00:55:18,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 231 transitions, 3128 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:55:18,160 INFO L231 Difference]: Finished difference. Result has 229 places, 209 transitions, 2682 flow [2024-06-28 00:55:18,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2682, PETRI_PLACES=229, PETRI_TRANSITIONS=209} [2024-06-28 00:55:18,161 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 186 predicate places. [2024-06-28 00:55:18,161 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 209 transitions, 2682 flow [2024-06-28 00:55:18,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:18,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:18,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:18,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:55:18,161 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:18,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:18,162 INFO L85 PathProgramCache]: Analyzing trace with hash 889865274, now seen corresponding path program 8 times [2024-06-28 00:55:18,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:18,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544185576] [2024-06-28 00:55:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:18,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:20,141 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 00:55:20,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:20,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544185576] [2024-06-28 00:55:20,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544185576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:20,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:20,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:20,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975516498] [2024-06-28 00:55:20,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:20,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:20,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:20,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:20,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 209 transitions, 2682 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:20,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:20,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:20,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:21,099 INFO L124 PetriNetUnfolderBase]: 1230/2239 cut-off events. [2024-06-28 00:55:21,100 INFO L125 PetriNetUnfolderBase]: For 62093/62093 co-relation queries the response was YES. [2024-06-28 00:55:21,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15122 conditions, 2239 events. 1230/2239 cut-off events. For 62093/62093 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12625 event pairs, 272 based on Foata normal form. 2/2143 useless extension candidates. Maximal degree in co-relation 15020. Up to 1734 conditions per place. [2024-06-28 00:55:21,122 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 166 selfloop transitions, 61 changer transitions 0/234 dead transitions. [2024-06-28 00:55:21,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 234 transitions, 3294 flow [2024-06-28 00:55:21,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:21,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:55:21,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39886039886039887 [2024-06-28 00:55:21,124 INFO L175 Difference]: Start difference. First operand has 229 places, 209 transitions, 2682 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:55:21,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 234 transitions, 3294 flow [2024-06-28 00:55:21,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 234 transitions, 3169 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:21,364 INFO L231 Difference]: Finished difference. Result has 230 places, 211 transitions, 2743 flow [2024-06-28 00:55:21,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2743, PETRI_PLACES=230, PETRI_TRANSITIONS=211} [2024-06-28 00:55:21,364 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2024-06-28 00:55:21,365 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 211 transitions, 2743 flow [2024-06-28 00:55:21,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:21,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:21,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:21,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:55:21,365 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:21,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:21,366 INFO L85 PathProgramCache]: Analyzing trace with hash 890468600, now seen corresponding path program 2 times [2024-06-28 00:55:21,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:21,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194459286] [2024-06-28 00:55:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:21,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:23,960 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 00:55:23,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:23,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194459286] [2024-06-28 00:55:23,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194459286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:23,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:23,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:23,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629304773] [2024-06-28 00:55:23,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:23,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:23,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:23,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:23,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:24,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:24,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 211 transitions, 2743 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:24,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:24,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:24,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:24,838 INFO L124 PetriNetUnfolderBase]: 1228/2238 cut-off events. [2024-06-28 00:55:24,839 INFO L125 PetriNetUnfolderBase]: For 59618/59618 co-relation queries the response was YES. [2024-06-28 00:55:24,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15097 conditions, 2238 events. 1228/2238 cut-off events. For 59618/59618 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12687 event pairs, 406 based on Foata normal form. 1/2142 useless extension candidates. Maximal degree in co-relation 14995. Up to 1894 conditions per place. [2024-06-28 00:55:24,859 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 182 selfloop transitions, 44 changer transitions 0/233 dead transitions. [2024-06-28 00:55:24,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 233 transitions, 3355 flow [2024-06-28 00:55:24,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:24,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:24,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-28 00:55:24,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817663817663818 [2024-06-28 00:55:24,861 INFO L175 Difference]: Start difference. First operand has 230 places, 211 transitions, 2743 flow. Second operand 9 states and 134 transitions. [2024-06-28 00:55:24,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 233 transitions, 3355 flow [2024-06-28 00:55:25,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 233 transitions, 3197 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:25,024 INFO L231 Difference]: Finished difference. Result has 232 places, 213 transitions, 2743 flow [2024-06-28 00:55:25,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2585, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2743, PETRI_PLACES=232, PETRI_TRANSITIONS=213} [2024-06-28 00:55:25,025 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 189 predicate places. [2024-06-28 00:55:25,025 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 213 transitions, 2743 flow [2024-06-28 00:55:25,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:25,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:25,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:25,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:55:25,025 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:25,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:25,026 INFO L85 PathProgramCache]: Analyzing trace with hash 890468290, now seen corresponding path program 9 times [2024-06-28 00:55:25,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:25,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985013178] [2024-06-28 00:55:25,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:25,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:27,286 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 00:55:27,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:27,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985013178] [2024-06-28 00:55:27,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985013178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:27,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:27,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713422645] [2024-06-28 00:55:27,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:27,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:27,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:27,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:27,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 213 transitions, 2743 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:27,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:27,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:27,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:28,380 INFO L124 PetriNetUnfolderBase]: 1239/2253 cut-off events. [2024-06-28 00:55:28,380 INFO L125 PetriNetUnfolderBase]: For 60467/60467 co-relation queries the response was YES. [2024-06-28 00:55:28,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15108 conditions, 2253 events. 1239/2253 cut-off events. For 60467/60467 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12683 event pairs, 272 based on Foata normal form. 2/2156 useless extension candidates. Maximal degree in co-relation 15005. Up to 1618 conditions per place. [2024-06-28 00:55:28,399 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 151 selfloop transitions, 81 changer transitions 0/239 dead transitions. [2024-06-28 00:55:28,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 239 transitions, 3371 flow [2024-06-28 00:55:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:28,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:55:28,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045584045584046 [2024-06-28 00:55:28,400 INFO L175 Difference]: Start difference. First operand has 232 places, 213 transitions, 2743 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:55:28,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 239 transitions, 3371 flow [2024-06-28 00:55:28,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 239 transitions, 3242 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:28,571 INFO L231 Difference]: Finished difference. Result has 233 places, 215 transitions, 2842 flow [2024-06-28 00:55:28,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2614, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2842, PETRI_PLACES=233, PETRI_TRANSITIONS=215} [2024-06-28 00:55:28,571 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 190 predicate places. [2024-06-28 00:55:28,572 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 215 transitions, 2842 flow [2024-06-28 00:55:28,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:28,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:28,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:28,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:55:28,572 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:28,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:28,573 INFO L85 PathProgramCache]: Analyzing trace with hash -714919900, now seen corresponding path program 2 times [2024-06-28 00:55:28,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:28,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284895608] [2024-06-28 00:55:28,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:28,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:31,856 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 00:55:31,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:31,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284895608] [2024-06-28 00:55:31,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284895608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:31,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:31,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:31,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409380558] [2024-06-28 00:55:31,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:31,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:31,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:31,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:31,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:31,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:31,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 215 transitions, 2842 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:31,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:31,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:31,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:32,877 INFO L124 PetriNetUnfolderBase]: 1251/2265 cut-off events. [2024-06-28 00:55:32,877 INFO L125 PetriNetUnfolderBase]: For 61512/61512 co-relation queries the response was YES. [2024-06-28 00:55:32,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15389 conditions, 2265 events. 1251/2265 cut-off events. For 61512/61512 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12905 event pairs, 339 based on Foata normal form. 2/2166 useless extension candidates. Maximal degree in co-relation 15286. Up to 1943 conditions per place. [2024-06-28 00:55:32,896 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 199 selfloop transitions, 34 changer transitions 0/240 dead transitions. [2024-06-28 00:55:32,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 240 transitions, 3480 flow [2024-06-28 00:55:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 00:55:32,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3769230769230769 [2024-06-28 00:55:32,897 INFO L175 Difference]: Start difference. First operand has 233 places, 215 transitions, 2842 flow. Second operand 10 states and 147 transitions. [2024-06-28 00:55:32,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 240 transitions, 3480 flow [2024-06-28 00:55:33,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 240 transitions, 3280 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:33,062 INFO L231 Difference]: Finished difference. Result has 235 places, 217 transitions, 2768 flow [2024-06-28 00:55:33,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2642, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2768, PETRI_PLACES=235, PETRI_TRANSITIONS=217} [2024-06-28 00:55:33,063 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 192 predicate places. [2024-06-28 00:55:33,063 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 217 transitions, 2768 flow [2024-06-28 00:55:33,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:33,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:33,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:33,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:55:33,064 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:33,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:33,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1277528678, now seen corresponding path program 10 times [2024-06-28 00:55:33,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:33,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097540078] [2024-06-28 00:55:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:33,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:35,117 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 00:55:35,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097540078] [2024-06-28 00:55:35,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097540078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:35,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:35,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:55:35,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431222214] [2024-06-28 00:55:35,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:35,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:55:35,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:35,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:55:35,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:55:35,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:35,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 217 transitions, 2768 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:35,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:35,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:35,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:36,026 INFO L124 PetriNetUnfolderBase]: 1255/2273 cut-off events. [2024-06-28 00:55:36,026 INFO L125 PetriNetUnfolderBase]: For 58258/58258 co-relation queries the response was YES. [2024-06-28 00:55:36,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15130 conditions, 2273 events. 1255/2273 cut-off events. For 58258/58258 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12889 event pairs, 276 based on Foata normal form. 2/2173 useless extension candidates. Maximal degree in co-relation 15027. Up to 1881 conditions per place. [2024-06-28 00:55:36,048 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 193 selfloop transitions, 43 changer transitions 0/243 dead transitions. [2024-06-28 00:55:36,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 243 transitions, 3433 flow [2024-06-28 00:55:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:36,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:55:36,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017094017094017 [2024-06-28 00:55:36,049 INFO L175 Difference]: Start difference. First operand has 235 places, 217 transitions, 2768 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:55:36,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 243 transitions, 3433 flow [2024-06-28 00:55:36,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 243 transitions, 3329 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:36,314 INFO L231 Difference]: Finished difference. Result has 236 places, 219 transitions, 2802 flow [2024-06-28 00:55:36,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2666, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2802, PETRI_PLACES=236, PETRI_TRANSITIONS=219} [2024-06-28 00:55:36,315 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 193 predicate places. [2024-06-28 00:55:36,315 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 219 transitions, 2802 flow [2024-06-28 00:55:36,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:36,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:36,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:36,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:55:36,316 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:36,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:36,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1277774632, now seen corresponding path program 10 times [2024-06-28 00:55:36,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:36,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415274030] [2024-06-28 00:55:36,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:36,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:38,592 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 00:55:38,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:38,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415274030] [2024-06-28 00:55:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415274030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:38,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:38,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605150062] [2024-06-28 00:55:38,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:38,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:38,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:38,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:38,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:38,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:38,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 219 transitions, 2802 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:38,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:38,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:38,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:39,491 INFO L124 PetriNetUnfolderBase]: 1281/2315 cut-off events. [2024-06-28 00:55:39,491 INFO L125 PetriNetUnfolderBase]: For 62354/62354 co-relation queries the response was YES. [2024-06-28 00:55:39,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15581 conditions, 2315 events. 1281/2315 cut-off events. For 62354/62354 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 13161 event pairs, 280 based on Foata normal form. 2/2210 useless extension candidates. Maximal degree in co-relation 15477. Up to 1864 conditions per place. [2024-06-28 00:55:39,515 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 193 selfloop transitions, 48 changer transitions 0/248 dead transitions. [2024-06-28 00:55:39,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 248 transitions, 3612 flow [2024-06-28 00:55:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 00:55:39,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131054131054131 [2024-06-28 00:55:39,517 INFO L175 Difference]: Start difference. First operand has 236 places, 219 transitions, 2802 flow. Second operand 9 states and 145 transitions. [2024-06-28 00:55:39,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 248 transitions, 3612 flow [2024-06-28 00:55:39,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 248 transitions, 3539 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:55:39,702 INFO L231 Difference]: Finished difference. Result has 240 places, 223 transitions, 2946 flow [2024-06-28 00:55:39,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2729, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2946, PETRI_PLACES=240, PETRI_TRANSITIONS=223} [2024-06-28 00:55:39,702 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 197 predicate places. [2024-06-28 00:55:39,703 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 223 transitions, 2946 flow [2024-06-28 00:55:39,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:39,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:39,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:39,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:55:39,703 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:39,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:39,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1930986774, now seen corresponding path program 11 times [2024-06-28 00:55:39,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:39,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901340881] [2024-06-28 00:55:39,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:39,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:41,673 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 00:55:41,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:41,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901340881] [2024-06-28 00:55:41,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901340881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:41,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:41,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:55:41,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791140746] [2024-06-28 00:55:41,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:41,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:55:41,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:41,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:55:41,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:55:41,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:41,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 223 transitions, 2946 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:41,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:41,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:41,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:42,483 INFO L124 PetriNetUnfolderBase]: 1292/2332 cut-off events. [2024-06-28 00:55:42,483 INFO L125 PetriNetUnfolderBase]: For 64915/64915 co-relation queries the response was YES. [2024-06-28 00:55:42,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15785 conditions, 2332 events. 1292/2332 cut-off events. For 64915/64915 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 13252 event pairs, 280 based on Foata normal form. 2/2226 useless extension candidates. Maximal degree in co-relation 15680. Up to 1913 conditions per place. [2024-06-28 00:55:42,506 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 196 selfloop transitions, 45 changer transitions 0/248 dead transitions. [2024-06-28 00:55:42,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 248 transitions, 3596 flow [2024-06-28 00:55:42,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:55:42,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045584045584046 [2024-06-28 00:55:42,507 INFO L175 Difference]: Start difference. First operand has 240 places, 223 transitions, 2946 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:55:42,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 248 transitions, 3596 flow [2024-06-28 00:55:42,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 248 transitions, 3473 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 00:55:42,699 INFO L231 Difference]: Finished difference. Result has 244 places, 225 transitions, 2982 flow [2024-06-28 00:55:42,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2833, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2982, PETRI_PLACES=244, PETRI_TRANSITIONS=225} [2024-06-28 00:55:42,702 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 201 predicate places. [2024-06-28 00:55:42,702 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 225 transitions, 2982 flow [2024-06-28 00:55:42,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:42,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:42,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:42,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:55:42,703 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:42,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:42,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1286117414, now seen corresponding path program 3 times [2024-06-28 00:55:42,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:42,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427287256] [2024-06-28 00:55:42,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:42,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:45,371 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 00:55:45,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:45,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427287256] [2024-06-28 00:55:45,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427287256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:45,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:45,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:45,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392151422] [2024-06-28 00:55:45,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:45,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:45,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:45,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:45,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:45,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:45,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 225 transitions, 2982 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:45,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:45,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:45,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:46,254 INFO L124 PetriNetUnfolderBase]: 1304/2358 cut-off events. [2024-06-28 00:55:46,255 INFO L125 PetriNetUnfolderBase]: For 66338/66338 co-relation queries the response was YES. [2024-06-28 00:55:46,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15962 conditions, 2358 events. 1304/2358 cut-off events. For 66338/66338 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13542 event pairs, 342 based on Foata normal form. 2/2249 useless extension candidates. Maximal degree in co-relation 15855. Up to 2053 conditions per place. [2024-06-28 00:55:46,277 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 212 selfloop transitions, 30 changer transitions 0/249 dead transitions. [2024-06-28 00:55:46,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 249 transitions, 3638 flow [2024-06-28 00:55:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:46,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 00:55:46,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3769230769230769 [2024-06-28 00:55:46,278 INFO L175 Difference]: Start difference. First operand has 244 places, 225 transitions, 2982 flow. Second operand 10 states and 147 transitions. [2024-06-28 00:55:46,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 249 transitions, 3638 flow [2024-06-28 00:55:46,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 249 transitions, 3513 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:46,490 INFO L231 Difference]: Finished difference. Result has 247 places, 227 transitions, 2972 flow [2024-06-28 00:55:46,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2857, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2972, PETRI_PLACES=247, PETRI_TRANSITIONS=227} [2024-06-28 00:55:46,490 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 204 predicate places. [2024-06-28 00:55:46,491 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 227 transitions, 2972 flow [2024-06-28 00:55:46,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:46,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:46,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:46,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:55:46,491 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:46,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1874407556, now seen corresponding path program 12 times [2024-06-28 00:55:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:46,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170292695] [2024-06-28 00:55:46,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:46,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:48,791 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 00:55:48,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:48,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170292695] [2024-06-28 00:55:48,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170292695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:48,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:48,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:48,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541694009] [2024-06-28 00:55:48,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:48,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:48,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:48,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:48,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:48,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:48,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 227 transitions, 2972 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:48,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:48,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:48,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:49,852 INFO L124 PetriNetUnfolderBase]: 1330/2390 cut-off events. [2024-06-28 00:55:49,852 INFO L125 PetriNetUnfolderBase]: For 71331/71331 co-relation queries the response was YES. [2024-06-28 00:55:49,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16369 conditions, 2390 events. 1330/2390 cut-off events. For 71331/71331 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13600 event pairs, 268 based on Foata normal form. 2/2280 useless extension candidates. Maximal degree in co-relation 16261. Up to 1790 conditions per place. [2024-06-28 00:55:49,878 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 177 selfloop transitions, 72 changer transitions 0/256 dead transitions. [2024-06-28 00:55:49,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 256 transitions, 3812 flow [2024-06-28 00:55:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 00:55:49,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41595441595441596 [2024-06-28 00:55:49,879 INFO L175 Difference]: Start difference. First operand has 247 places, 227 transitions, 2972 flow. Second operand 9 states and 146 transitions. [2024-06-28 00:55:49,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 256 transitions, 3812 flow [2024-06-28 00:55:50,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 256 transitions, 3717 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:50,127 INFO L231 Difference]: Finished difference. Result has 248 places, 231 transitions, 3150 flow [2024-06-28 00:55:50,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3150, PETRI_PLACES=248, PETRI_TRANSITIONS=231} [2024-06-28 00:55:50,127 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 205 predicate places. [2024-06-28 00:55:50,128 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 231 transitions, 3150 flow [2024-06-28 00:55:50,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:50,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:50,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:50,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:55:50,128 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:50,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:50,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1874415926, now seen corresponding path program 13 times [2024-06-28 00:55:50,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:50,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670880866] [2024-06-28 00:55:50,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:50,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:52,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:52,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670880866] [2024-06-28 00:55:52,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670880866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:52,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:52,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:55:52,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226875268] [2024-06-28 00:55:52,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:52,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:55:52,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:52,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:55:52,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:55:52,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:52,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 231 transitions, 3150 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:52,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:52,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:52,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:53,467 INFO L124 PetriNetUnfolderBase]: 1326/2384 cut-off events. [2024-06-28 00:55:53,467 INFO L125 PetriNetUnfolderBase]: For 70720/70720 co-relation queries the response was YES. [2024-06-28 00:55:53,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16440 conditions, 2384 events. 1326/2384 cut-off events. For 70720/70720 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13561 event pairs, 268 based on Foata normal form. 2/2274 useless extension candidates. Maximal degree in co-relation 16331. Up to 1810 conditions per place. [2024-06-28 00:55:53,490 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 177 selfloop transitions, 69 changer transitions 0/253 dead transitions. [2024-06-28 00:55:53,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 253 transitions, 3748 flow [2024-06-28 00:55:53,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:55:53,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017094017094017 [2024-06-28 00:55:53,491 INFO L175 Difference]: Start difference. First operand has 248 places, 231 transitions, 3150 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:55:53,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 253 transitions, 3748 flow [2024-06-28 00:55:53,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 253 transitions, 3558 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-28 00:55:53,703 INFO L231 Difference]: Finished difference. Result has 252 places, 231 transitions, 3103 flow [2024-06-28 00:55:53,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2960, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3103, PETRI_PLACES=252, PETRI_TRANSITIONS=231} [2024-06-28 00:55:53,704 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 209 predicate places. [2024-06-28 00:55:53,704 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 231 transitions, 3103 flow [2024-06-28 00:55:53,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:53,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:53,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:53,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:55:53,704 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:53,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:53,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1277535622, now seen corresponding path program 14 times [2024-06-28 00:55:53,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:53,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833564781] [2024-06-28 00:55:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:53,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:55,805 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 00:55:55,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:55,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833564781] [2024-06-28 00:55:55,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833564781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:55,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:55,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:55:55,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976380643] [2024-06-28 00:55:55,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:55,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:55:55,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:55,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:55:55,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:55:55,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:55:55,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 231 transitions, 3103 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:55,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:55,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:55:55,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:56,662 INFO L124 PetriNetUnfolderBase]: 1322/2378 cut-off events. [2024-06-28 00:55:56,662 INFO L125 PetriNetUnfolderBase]: For 67658/67658 co-relation queries the response was YES. [2024-06-28 00:55:56,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16284 conditions, 2378 events. 1322/2378 cut-off events. For 67658/67658 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13523 event pairs, 286 based on Foata normal form. 2/2268 useless extension candidates. Maximal degree in co-relation 16173. Up to 1982 conditions per place. [2024-06-28 00:55:56,687 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 203 selfloop transitions, 42 changer transitions 0/252 dead transitions. [2024-06-28 00:55:56,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 252 transitions, 3693 flow [2024-06-28 00:55:56,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 00:55:56,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39316239316239315 [2024-06-28 00:55:56,688 INFO L175 Difference]: Start difference. First operand has 252 places, 231 transitions, 3103 flow. Second operand 9 states and 138 transitions. [2024-06-28 00:55:56,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 252 transitions, 3693 flow [2024-06-28 00:55:56,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 252 transitions, 3514 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:56,940 INFO L231 Difference]: Finished difference. Result has 253 places, 231 transitions, 3013 flow [2024-06-28 00:55:56,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3013, PETRI_PLACES=253, PETRI_TRANSITIONS=231} [2024-06-28 00:55:56,940 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 210 predicate places. [2024-06-28 00:55:56,940 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 231 transitions, 3013 flow [2024-06-28 00:55:56,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:56,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:56,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:56,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:55:56,941 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:55:56,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:56,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1874108344, now seen corresponding path program 4 times [2024-06-28 00:55:56,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:56,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117517034] [2024-06-28 00:55:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:56,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:00,189 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 00:56:00,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:00,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117517034] [2024-06-28 00:56:00,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117517034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:00,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:00,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:56:00,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663760314] [2024-06-28 00:56:00,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:00,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:56:00,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:00,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:56:00,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:56:00,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:00,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 231 transitions, 3013 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:00,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:00,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:00,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:01,156 INFO L124 PetriNetUnfolderBase]: 1334/2404 cut-off events. [2024-06-28 00:56:01,156 INFO L125 PetriNetUnfolderBase]: For 69643/69643 co-relation queries the response was YES. [2024-06-28 00:56:01,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16258 conditions, 2404 events. 1334/2404 cut-off events. For 69643/69643 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 13803 event pairs, 338 based on Foata normal form. 2/2291 useless extension candidates. Maximal degree in co-relation 16146. Up to 2048 conditions per place. [2024-06-28 00:56:01,181 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 207 selfloop transitions, 41 changer transitions 0/255 dead transitions. [2024-06-28 00:56:01,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 255 transitions, 3685 flow [2024-06-28 00:56:01,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:01,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 00:56:01,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37948717948717947 [2024-06-28 00:56:01,184 INFO L175 Difference]: Start difference. First operand has 253 places, 231 transitions, 3013 flow. Second operand 10 states and 148 transitions. [2024-06-28 00:56:01,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 255 transitions, 3685 flow [2024-06-28 00:56:01,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 255 transitions, 3587 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:56:01,405 INFO L231 Difference]: Finished difference. Result has 255 places, 233 transitions, 3056 flow [2024-06-28 00:56:01,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2915, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3056, PETRI_PLACES=255, PETRI_TRANSITIONS=233} [2024-06-28 00:56:01,405 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 212 predicate places. [2024-06-28 00:56:01,406 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 233 transitions, 3056 flow [2024-06-28 00:56:01,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:01,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:01,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:01,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:56:01,406 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:01,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:01,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1531820666, now seen corresponding path program 15 times [2024-06-28 00:56:01,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:01,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050349683] [2024-06-28 00:56:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:03,314 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 00:56:03,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:03,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050349683] [2024-06-28 00:56:03,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050349683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:03,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:03,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:56:03,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473251501] [2024-06-28 00:56:03,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:03,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:56:03,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:03,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:56:03,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:56:03,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:03,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 233 transitions, 3056 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:03,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:03,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:03,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:04,288 INFO L124 PetriNetUnfolderBase]: 1330/2390 cut-off events. [2024-06-28 00:56:04,288 INFO L125 PetriNetUnfolderBase]: For 67361/67361 co-relation queries the response was YES. [2024-06-28 00:56:04,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16102 conditions, 2390 events. 1330/2390 cut-off events. For 67361/67361 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13614 event pairs, 264 based on Foata normal form. 2/2278 useless extension candidates. Maximal degree in co-relation 15989. Up to 1563 conditions per place. [2024-06-28 00:56:04,314 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 144 selfloop transitions, 107 changer transitions 0/258 dead transitions. [2024-06-28 00:56:04,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 258 transitions, 3734 flow [2024-06-28 00:56:04,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:56:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:56:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 00:56:04,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 00:56:04,366 INFO L175 Difference]: Start difference. First operand has 255 places, 233 transitions, 3056 flow. Second operand 9 states and 144 transitions. [2024-06-28 00:56:04,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 258 transitions, 3734 flow [2024-06-28 00:56:04,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 258 transitions, 3613 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 00:56:04,605 INFO L231 Difference]: Finished difference. Result has 256 places, 235 transitions, 3222 flow [2024-06-28 00:56:04,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2935, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3222, PETRI_PLACES=256, PETRI_TRANSITIONS=235} [2024-06-28 00:56:04,606 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 213 predicate places. [2024-06-28 00:56:04,606 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 235 transitions, 3222 flow [2024-06-28 00:56:04,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:04,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:04,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:04,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:56:04,607 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:04,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:04,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1531809754, now seen corresponding path program 5 times [2024-06-28 00:56:04,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:04,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118192458] [2024-06-28 00:56:04,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:04,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:08,067 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 00:56:08,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:08,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118192458] [2024-06-28 00:56:08,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118192458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:08,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:08,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:56:08,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271211202] [2024-06-28 00:56:08,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:08,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:56:08,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:08,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:56:08,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:56:08,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:08,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 235 transitions, 3222 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:08,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:08,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:08,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:09,264 INFO L124 PetriNetUnfolderBase]: 1342/2416 cut-off events. [2024-06-28 00:56:09,264 INFO L125 PetriNetUnfolderBase]: For 70390/70390 co-relation queries the response was YES. [2024-06-28 00:56:09,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16597 conditions, 2416 events. 1342/2416 cut-off events. For 70390/70390 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 13893 event pairs, 334 based on Foata normal form. 2/2301 useless extension candidates. Maximal degree in co-relation 16483. Up to 1996 conditions per place. [2024-06-28 00:56:09,290 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 198 selfloop transitions, 54 changer transitions 0/259 dead transitions. [2024-06-28 00:56:09,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 259 transitions, 3906 flow [2024-06-28 00:56:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 00:56:09,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.382051282051282 [2024-06-28 00:56:09,292 INFO L175 Difference]: Start difference. First operand has 256 places, 235 transitions, 3222 flow. Second operand 10 states and 149 transitions. [2024-06-28 00:56:09,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 259 transitions, 3906 flow [2024-06-28 00:56:09,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 259 transitions, 3639 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:09,543 INFO L231 Difference]: Finished difference. Result has 259 places, 237 transitions, 3126 flow [2024-06-28 00:56:09,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3126, PETRI_PLACES=259, PETRI_TRANSITIONS=237} [2024-06-28 00:56:09,544 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 216 predicate places. [2024-06-28 00:56:09,544 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 237 transitions, 3126 flow [2024-06-28 00:56:09,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:09,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:09,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:09,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:56:09,545 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:09,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:09,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1519429594, now seen corresponding path program 6 times [2024-06-28 00:56:09,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:09,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852054348] [2024-06-28 00:56:09,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:09,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:12,090 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 00:56:12,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:12,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852054348] [2024-06-28 00:56:12,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852054348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:12,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:12,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:56:12,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61545438] [2024-06-28 00:56:12,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:12,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:56:12,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:12,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:56:12,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:56:12,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:12,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 237 transitions, 3126 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:12,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:12,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:12,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:12,900 INFO L124 PetriNetUnfolderBase]: 1362/2456 cut-off events. [2024-06-28 00:56:12,900 INFO L125 PetriNetUnfolderBase]: For 73599/73599 co-relation queries the response was YES. [2024-06-28 00:56:12,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16644 conditions, 2456 events. 1362/2456 cut-off events. For 73599/73599 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14114 event pairs, 543 based on Foata normal form. 2/2343 useless extension candidates. Maximal degree in co-relation 16529. Up to 2209 conditions per place. [2024-06-28 00:56:12,930 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 234 selfloop transitions, 20 changer transitions 0/261 dead transitions. [2024-06-28 00:56:12,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 261 transitions, 3978 flow [2024-06-28 00:56:12,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 00:56:12,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36923076923076925 [2024-06-28 00:56:12,932 INFO L175 Difference]: Start difference. First operand has 259 places, 237 transitions, 3126 flow. Second operand 10 states and 144 transitions. [2024-06-28 00:56:12,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 261 transitions, 3978 flow [2024-06-28 00:56:13,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 261 transitions, 3827 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 00:56:13,250 INFO L231 Difference]: Finished difference. Result has 261 places, 241 transitions, 3140 flow [2024-06-28 00:56:13,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2975, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3140, PETRI_PLACES=261, PETRI_TRANSITIONS=241} [2024-06-28 00:56:13,251 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 218 predicate places. [2024-06-28 00:56:13,251 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 241 transitions, 3140 flow [2024-06-28 00:56:13,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:13,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:13,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:56:13,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:56:13,252 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:13,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:13,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1531463794, now seen corresponding path program 7 times [2024-06-28 00:56:13,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:13,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13425349] [2024-06-28 00:56:13,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:13,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:16,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:16,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13425349] [2024-06-28 00:56:16,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13425349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:16,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:16,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:56:16,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371719130] [2024-06-28 00:56:16,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:16,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:56:16,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:16,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:56:16,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:56:16,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:16,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 241 transitions, 3140 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:16,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:16,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:16,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:17,894 INFO L124 PetriNetUnfolderBase]: 1358/2450 cut-off events. [2024-06-28 00:56:17,894 INFO L125 PetriNetUnfolderBase]: For 71194/71194 co-relation queries the response was YES. [2024-06-28 00:56:17,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16336 conditions, 2450 events. 1358/2450 cut-off events. For 71194/71194 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14104 event pairs, 543 based on Foata normal form. 2/2337 useless extension candidates. Maximal degree in co-relation 16220. Up to 2206 conditions per place. [2024-06-28 00:56:17,924 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 232 selfloop transitions, 20 changer transitions 0/259 dead transitions. [2024-06-28 00:56:17,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 259 transitions, 3746 flow [2024-06-28 00:56:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:17,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-28 00:56:17,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36153846153846153 [2024-06-28 00:56:17,925 INFO L175 Difference]: Start difference. First operand has 261 places, 241 transitions, 3140 flow. Second operand 10 states and 141 transitions. [2024-06-28 00:56:17,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 259 transitions, 3746 flow [2024-06-28 00:56:18,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 259 transitions, 3629 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 00:56:18,242 INFO L231 Difference]: Finished difference. Result has 265 places, 241 transitions, 3072 flow [2024-06-28 00:56:18,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3023, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3072, PETRI_PLACES=265, PETRI_TRANSITIONS=241} [2024-06-28 00:56:18,243 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-28 00:56:18,243 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 241 transitions, 3072 flow [2024-06-28 00:56:18,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:18,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:18,243 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 00:56:18,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:56:18,244 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:18,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:18,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2082375395, now seen corresponding path program 1 times [2024-06-28 00:56:18,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:18,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792892676] [2024-06-28 00:56:18,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:18,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:19,922 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 00:56:19,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:19,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792892676] [2024-06-28 00:56:19,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792892676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:19,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:19,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:56:19,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255848662] [2024-06-28 00:56:19,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:19,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:56:19,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:19,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:56:19,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:56:20,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:20,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 241 transitions, 3072 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:20,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:20,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:20,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:20,809 INFO L124 PetriNetUnfolderBase]: 1374/2475 cut-off events. [2024-06-28 00:56:20,809 INFO L125 PetriNetUnfolderBase]: For 72226/72226 co-relation queries the response was YES. [2024-06-28 00:56:20,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16453 conditions, 2475 events. 1374/2475 cut-off events. For 72226/72226 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14174 event pairs, 335 based on Foata normal form. 2/2360 useless extension candidates. Maximal degree in co-relation 16335. Up to 2109 conditions per place. [2024-06-28 00:56:20,838 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 234 selfloop transitions, 36 changer transitions 0/277 dead transitions. [2024-06-28 00:56:20,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 277 transitions, 3841 flow [2024-06-28 00:56:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:20,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 00:56:20,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:56:20,840 INFO L175 Difference]: Start difference. First operand has 265 places, 241 transitions, 3072 flow. Second operand 10 states and 156 transitions. [2024-06-28 00:56:20,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 277 transitions, 3841 flow [2024-06-28 00:56:21,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 277 transitions, 3796 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:56:21,141 INFO L231 Difference]: Finished difference. Result has 266 places, 247 transitions, 3218 flow [2024-06-28 00:56:21,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3027, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3218, PETRI_PLACES=266, PETRI_TRANSITIONS=247} [2024-06-28 00:56:21,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 223 predicate places. [2024-06-28 00:56:21,142 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 247 transitions, 3218 flow [2024-06-28 00:56:21,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:21,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:21,142 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 00:56:21,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:56:21,142 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:21,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:21,143 INFO L85 PathProgramCache]: Analyzing trace with hash -991903895, now seen corresponding path program 2 times [2024-06-28 00:56:21,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:21,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292158109] [2024-06-28 00:56:21,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:21,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:23,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:23,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292158109] [2024-06-28 00:56:23,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292158109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:23,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:23,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:23,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068185874] [2024-06-28 00:56:23,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:23,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:23,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:23,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:23,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:23,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:23,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 247 transitions, 3218 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:56:23,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:23,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:23,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:24,171 INFO L124 PetriNetUnfolderBase]: 1390/2504 cut-off events. [2024-06-28 00:56:24,171 INFO L125 PetriNetUnfolderBase]: For 73852/73852 co-relation queries the response was YES. [2024-06-28 00:56:24,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16893 conditions, 2504 events. 1390/2504 cut-off events. For 73852/73852 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 14370 event pairs, 375 based on Foata normal form. 2/2387 useless extension candidates. Maximal degree in co-relation 16774. Up to 2189 conditions per place. [2024-06-28 00:56:24,197 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 235 selfloop transitions, 34 changer transitions 0/276 dead transitions. [2024-06-28 00:56:24,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 276 transitions, 3938 flow [2024-06-28 00:56:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:24,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:56:24,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2024-06-28 00:56:24,198 INFO L175 Difference]: Start difference. First operand has 266 places, 247 transitions, 3218 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:56:24,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 276 transitions, 3938 flow [2024-06-28 00:56:24,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 276 transitions, 3824 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:24,501 INFO L231 Difference]: Finished difference. Result has 269 places, 249 transitions, 3238 flow [2024-06-28 00:56:24,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3104, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3238, PETRI_PLACES=269, PETRI_TRANSITIONS=249} [2024-06-28 00:56:24,502 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-28 00:56:24,502 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 249 transitions, 3238 flow [2024-06-28 00:56:24,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:56:24,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:24,502 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 00:56:24,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:56:24,503 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:24,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash -990871595, now seen corresponding path program 3 times [2024-06-28 00:56:24,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:24,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657866392] [2024-06-28 00:56:24,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:24,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:26,278 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 00:56:26,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:26,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657866392] [2024-06-28 00:56:26,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657866392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:26,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:26,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:56:26,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570513628] [2024-06-28 00:56:26,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:26,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:56:26,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:26,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:56:26,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:56:26,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:26,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 249 transitions, 3238 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:26,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:26,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:26,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:27,249 INFO L124 PetriNetUnfolderBase]: 1406/2531 cut-off events. [2024-06-28 00:56:27,249 INFO L125 PetriNetUnfolderBase]: For 76678/76678 co-relation queries the response was YES. [2024-06-28 00:56:27,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17097 conditions, 2531 events. 1406/2531 cut-off events. For 76678/76678 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 14572 event pairs, 378 based on Foata normal form. 2/2412 useless extension candidates. Maximal degree in co-relation 16977. Up to 2201 conditions per place. [2024-06-28 00:56:27,280 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 242 selfloop transitions, 33 changer transitions 0/282 dead transitions. [2024-06-28 00:56:27,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 282 transitions, 4016 flow [2024-06-28 00:56:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 00:56:27,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39487179487179486 [2024-06-28 00:56:27,296 INFO L175 Difference]: Start difference. First operand has 269 places, 249 transitions, 3238 flow. Second operand 10 states and 154 transitions. [2024-06-28 00:56:27,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 282 transitions, 4016 flow [2024-06-28 00:56:27,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 282 transitions, 3900 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 00:56:27,653 INFO L231 Difference]: Finished difference. Result has 272 places, 254 transitions, 3305 flow [2024-06-28 00:56:27,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3122, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3305, PETRI_PLACES=272, PETRI_TRANSITIONS=254} [2024-06-28 00:56:27,654 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 229 predicate places. [2024-06-28 00:56:27,654 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 254 transitions, 3305 flow [2024-06-28 00:56:27,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:27,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:27,654 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 00:56:27,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:56:27,655 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:27,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1451245773, now seen corresponding path program 4 times [2024-06-28 00:56:27,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:27,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138296436] [2024-06-28 00:56:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:27,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:29,436 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 00:56:29,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:29,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138296436] [2024-06-28 00:56:29,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138296436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:29,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:29,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:56:29,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864373360] [2024-06-28 00:56:29,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:29,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:56:29,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:29,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:56:29,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:56:29,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:29,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 254 transitions, 3305 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:29,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:29,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:29,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:30,416 INFO L124 PetriNetUnfolderBase]: 1430/2570 cut-off events. [2024-06-28 00:56:30,417 INFO L125 PetriNetUnfolderBase]: For 80049/80049 co-relation queries the response was YES. [2024-06-28 00:56:30,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17420 conditions, 2570 events. 1430/2570 cut-off events. For 80049/80049 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 14817 event pairs, 270 based on Foata normal form. 2/2452 useless extension candidates. Maximal degree in co-relation 17298. Up to 2146 conditions per place. [2024-06-28 00:56:30,442 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 239 selfloop transitions, 46 changer transitions 0/292 dead transitions. [2024-06-28 00:56:30,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 292 transitions, 4151 flow [2024-06-28 00:56:30,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:30,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:30,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 00:56:30,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 00:56:30,444 INFO L175 Difference]: Start difference. First operand has 272 places, 254 transitions, 3305 flow. Second operand 10 states and 156 transitions. [2024-06-28 00:56:30,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 292 transitions, 4151 flow [2024-06-28 00:56:30,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 292 transitions, 4024 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:30,795 INFO L231 Difference]: Finished difference. Result has 276 places, 262 transitions, 3433 flow [2024-06-28 00:56:30,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3178, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3433, PETRI_PLACES=276, PETRI_TRANSITIONS=262} [2024-06-28 00:56:30,796 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 233 predicate places. [2024-06-28 00:56:30,796 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 262 transitions, 3433 flow [2024-06-28 00:56:30,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:30,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:30,796 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 00:56:30,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:56:30,796 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:30,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1227579763, now seen corresponding path program 1 times [2024-06-28 00:56:30,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:30,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313255729] [2024-06-28 00:56:30,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:30,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:33,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:33,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:33,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313255729] [2024-06-28 00:56:33,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313255729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:33,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:33,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:56:33,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164635585] [2024-06-28 00:56:33,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:33,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:56:33,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:33,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:56:33,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:56:33,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:33,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 262 transitions, 3433 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:33,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:33,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:33,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:34,063 INFO L124 PetriNetUnfolderBase]: 1441/2591 cut-off events. [2024-06-28 00:56:34,064 INFO L125 PetriNetUnfolderBase]: For 84610/84610 co-relation queries the response was YES. [2024-06-28 00:56:34,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17679 conditions, 2591 events. 1441/2591 cut-off events. For 84610/84610 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14991 event pairs, 385 based on Foata normal form. 2/2472 useless extension candidates. Maximal degree in co-relation 17555. Up to 2263 conditions per place. [2024-06-28 00:56:34,088 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 247 selfloop transitions, 38 changer transitions 0/292 dead transitions. [2024-06-28 00:56:34,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 292 transitions, 4181 flow [2024-06-28 00:56:34,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:56:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:56:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 00:56:34,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-28 00:56:34,089 INFO L175 Difference]: Start difference. First operand has 276 places, 262 transitions, 3433 flow. Second operand 11 states and 164 transitions. [2024-06-28 00:56:34,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 292 transitions, 4181 flow [2024-06-28 00:56:34,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 292 transitions, 4028 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:34,421 INFO L231 Difference]: Finished difference. Result has 280 places, 264 transitions, 3424 flow [2024-06-28 00:56:34,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3424, PETRI_PLACES=280, PETRI_TRANSITIONS=264} [2024-06-28 00:56:34,421 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-28 00:56:34,421 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 264 transitions, 3424 flow [2024-06-28 00:56:34,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:34,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:34,422 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 00:56:34,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:56:34,422 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:34,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:34,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1891103843, now seen corresponding path program 5 times [2024-06-28 00:56:34,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:34,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728030124] [2024-06-28 00:56:34,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:34,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:36,704 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 00:56:36,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:36,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728030124] [2024-06-28 00:56:36,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728030124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:36,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:36,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:56:36,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081119294] [2024-06-28 00:56:36,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:36,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:56:36,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:36,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:56:36,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:56:36,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:36,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 264 transitions, 3424 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:36,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:36,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:36,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:37,710 INFO L124 PetriNetUnfolderBase]: 1467/2632 cut-off events. [2024-06-28 00:56:37,710 INFO L125 PetriNetUnfolderBase]: For 85022/85022 co-relation queries the response was YES. [2024-06-28 00:56:37,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17861 conditions, 2632 events. 1467/2632 cut-off events. For 85022/85022 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15295 event pairs, 356 based on Foata normal form. 2/2512 useless extension candidates. Maximal degree in co-relation 17736. Up to 2312 conditions per place. [2024-06-28 00:56:37,741 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 250 selfloop transitions, 37 changer transitions 0/294 dead transitions. [2024-06-28 00:56:37,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 294 transitions, 4194 flow [2024-06-28 00:56:37,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:37,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:56:37,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-06-28 00:56:37,743 INFO L175 Difference]: Start difference. First operand has 280 places, 264 transitions, 3424 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:56:37,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 294 transitions, 4194 flow [2024-06-28 00:56:38,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 294 transitions, 4072 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 00:56:38,141 INFO L231 Difference]: Finished difference. Result has 281 places, 268 transitions, 3468 flow [2024-06-28 00:56:38,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3302, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3468, PETRI_PLACES=281, PETRI_TRANSITIONS=268} [2024-06-28 00:56:38,142 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 238 predicate places. [2024-06-28 00:56:38,142 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 268 transitions, 3468 flow [2024-06-28 00:56:38,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:56:38,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:38,142 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 00:56:38,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:56:38,143 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:38,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:38,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1974226313, now seen corresponding path program 6 times [2024-06-28 00:56:38,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:38,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163154188] [2024-06-28 00:56:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:38,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:40,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:40,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163154188] [2024-06-28 00:56:40,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163154188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:40,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:40,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:40,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751099633] [2024-06-28 00:56:40,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:40,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:40,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:40,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:40,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:40,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:40,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 268 transitions, 3468 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:56:40,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:40,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:40,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:41,488 INFO L124 PetriNetUnfolderBase]: 1497/2692 cut-off events. [2024-06-28 00:56:41,488 INFO L125 PetriNetUnfolderBase]: For 89495/89495 co-relation queries the response was YES. [2024-06-28 00:56:41,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18297 conditions, 2692 events. 1497/2692 cut-off events. For 89495/89495 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15748 event pairs, 354 based on Foata normal form. 2/2570 useless extension candidates. Maximal degree in co-relation 18171. Up to 2342 conditions per place. [2024-06-28 00:56:41,516 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 261 selfloop transitions, 35 changer transitions 0/303 dead transitions. [2024-06-28 00:56:41,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 303 transitions, 4302 flow [2024-06-28 00:56:41,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:56:41,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2024-06-28 00:56:41,517 INFO L175 Difference]: Start difference. First operand has 281 places, 268 transitions, 3468 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:56:41,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 303 transitions, 4302 flow [2024-06-28 00:56:41,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 303 transitions, 4174 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 00:56:41,909 INFO L231 Difference]: Finished difference. Result has 284 places, 273 transitions, 3498 flow [2024-06-28 00:56:41,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3340, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3498, PETRI_PLACES=284, PETRI_TRANSITIONS=273} [2024-06-28 00:56:41,910 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 241 predicate places. [2024-06-28 00:56:41,910 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 273 transitions, 3498 flow [2024-06-28 00:56:41,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:56:41,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:41,910 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 00:56:41,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:56:41,911 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:41,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:41,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1976129093, now seen corresponding path program 7 times [2024-06-28 00:56:41,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:41,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804189617] [2024-06-28 00:56:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:41,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:43,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:43,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804189617] [2024-06-28 00:56:43,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804189617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:43,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:43,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:43,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479989452] [2024-06-28 00:56:43,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:43,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:43,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:43,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:44,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:44,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 273 transitions, 3498 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:56:44,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:44,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:44,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:44,943 INFO L124 PetriNetUnfolderBase]: 1536/2768 cut-off events. [2024-06-28 00:56:44,943 INFO L125 PetriNetUnfolderBase]: For 93103/93103 co-relation queries the response was YES. [2024-06-28 00:56:44,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18818 conditions, 2768 events. 1536/2768 cut-off events. For 93103/93103 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 16330 event pairs, 347 based on Foata normal form. 2/2641 useless extension candidates. Maximal degree in co-relation 18690. Up to 2366 conditions per place. [2024-06-28 00:56:44,976 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 266 selfloop transitions, 40 changer transitions 0/313 dead transitions. [2024-06-28 00:56:44,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 313 transitions, 4400 flow [2024-06-28 00:56:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:44,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:56:44,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076923076923077 [2024-06-28 00:56:44,978 INFO L175 Difference]: Start difference. First operand has 284 places, 273 transitions, 3498 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:56:44,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 313 transitions, 4400 flow [2024-06-28 00:56:45,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 313 transitions, 4318 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:45,384 INFO L231 Difference]: Finished difference. Result has 288 places, 280 transitions, 3625 flow [2024-06-28 00:56:45,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3416, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3625, PETRI_PLACES=288, PETRI_TRANSITIONS=280} [2024-06-28 00:56:45,385 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 245 predicate places. [2024-06-28 00:56:45,385 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 280 transitions, 3625 flow [2024-06-28 00:56:45,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:56:45,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:45,385 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 00:56:45,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:56:45,386 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:45,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:45,386 INFO L85 PathProgramCache]: Analyzing trace with hash -241035439, now seen corresponding path program 2 times [2024-06-28 00:56:45,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:45,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737650257] [2024-06-28 00:56:45,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:45,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:47,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:47,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737650257] [2024-06-28 00:56:47,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737650257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:47,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:47,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:47,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046940730] [2024-06-28 00:56:47,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:47,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:47,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:47,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:48,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:48,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 280 transitions, 3625 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:56:48,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:48,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:48,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:49,205 INFO L124 PetriNetUnfolderBase]: 1550/2790 cut-off events. [2024-06-28 00:56:49,205 INFO L125 PetriNetUnfolderBase]: For 96388/96388 co-relation queries the response was YES. [2024-06-28 00:56:49,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19139 conditions, 2790 events. 1550/2790 cut-off events. For 96388/96388 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 16478 event pairs, 388 based on Foata normal form. 2/2661 useless extension candidates. Maximal degree in co-relation 19009. Up to 2453 conditions per place. [2024-06-28 00:56:49,237 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 263 selfloop transitions, 41 changer transitions 0/311 dead transitions. [2024-06-28 00:56:49,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 311 transitions, 4417 flow [2024-06-28 00:56:49,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:56:49,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:56:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 00:56:49,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-06-28 00:56:49,238 INFO L175 Difference]: Start difference. First operand has 288 places, 280 transitions, 3625 flow. Second operand 11 states and 166 transitions. [2024-06-28 00:56:49,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 311 transitions, 4417 flow [2024-06-28 00:56:49,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 311 transitions, 4322 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:49,682 INFO L231 Difference]: Finished difference. Result has 292 places, 284 transitions, 3702 flow [2024-06-28 00:56:49,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3530, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3702, PETRI_PLACES=292, PETRI_TRANSITIONS=284} [2024-06-28 00:56:49,683 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 249 predicate places. [2024-06-28 00:56:49,683 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 284 transitions, 3702 flow [2024-06-28 00:56:49,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:56:49,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:49,683 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 00:56:49,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:56:49,683 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:49,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:49,684 INFO L85 PathProgramCache]: Analyzing trace with hash -135637159, now seen corresponding path program 8 times [2024-06-28 00:56:49,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:49,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148508553] [2024-06-28 00:56:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:49,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:51,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:51,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:51,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148508553] [2024-06-28 00:56:51,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148508553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:51,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:51,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:51,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001130253] [2024-06-28 00:56:51,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:51,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:51,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:51,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:51,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:51,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 284 transitions, 3702 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:56:51,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:51,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:51,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:53,080 INFO L124 PetriNetUnfolderBase]: 1570/2833 cut-off events. [2024-06-28 00:56:53,080 INFO L125 PetriNetUnfolderBase]: For 99003/99003 co-relation queries the response was YES. [2024-06-28 00:56:53,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19481 conditions, 2833 events. 1570/2833 cut-off events. For 99003/99003 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 16803 event pairs, 375 based on Foata normal form. 2/2702 useless extension candidates. Maximal degree in co-relation 19350. Up to 2399 conditions per place. [2024-06-28 00:56:53,180 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 259 selfloop transitions, 49 changer transitions 0/315 dead transitions. [2024-06-28 00:56:53,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 315 transitions, 4538 flow [2024-06-28 00:56:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:56:53,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076923076923077 [2024-06-28 00:56:53,182 INFO L175 Difference]: Start difference. First operand has 292 places, 284 transitions, 3702 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:56:53,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 315 transitions, 4538 flow [2024-06-28 00:56:53,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 315 transitions, 4412 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 00:56:53,609 INFO L231 Difference]: Finished difference. Result has 293 places, 285 transitions, 3712 flow [2024-06-28 00:56:53,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3576, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3712, PETRI_PLACES=293, PETRI_TRANSITIONS=285} [2024-06-28 00:56:53,610 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-28 00:56:53,610 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 285 transitions, 3712 flow [2024-06-28 00:56:53,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:56:53,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:53,610 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 00:56:53,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:56:53,610 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:53,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:53,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1722725404, now seen corresponding path program 1 times [2024-06-28 00:56:53,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:53,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137860125] [2024-06-28 00:56:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:53,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:56,270 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 00:56:56,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:56,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137860125] [2024-06-28 00:56:56,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137860125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:56,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:56,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:56,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572248483] [2024-06-28 00:56:56,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:56,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:56,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:56,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:56,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:56,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:56:56,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 285 transitions, 3712 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:56:56,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:56,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:56:56,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:57,308 INFO L124 PetriNetUnfolderBase]: 1576/2844 cut-off events. [2024-06-28 00:56:57,309 INFO L125 PetriNetUnfolderBase]: For 98717/98717 co-relation queries the response was YES. [2024-06-28 00:56:57,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19614 conditions, 2844 events. 1576/2844 cut-off events. For 98717/98717 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 16963 event pairs, 517 based on Foata normal form. 1/2711 useless extension candidates. Maximal degree in co-relation 19482. Up to 2522 conditions per place. [2024-06-28 00:56:57,342 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 269 selfloop transitions, 36 changer transitions 0/312 dead transitions. [2024-06-28 00:56:57,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 312 transitions, 4516 flow [2024-06-28 00:56:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:56:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:56:57,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 00:56:57,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752913752913753 [2024-06-28 00:56:57,344 INFO L175 Difference]: Start difference. First operand has 293 places, 285 transitions, 3712 flow. Second operand 11 states and 161 transitions. [2024-06-28 00:56:57,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 312 transitions, 4516 flow [2024-06-28 00:56:57,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 312 transitions, 4404 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 00:56:57,779 INFO L231 Difference]: Finished difference. Result has 296 places, 287 transitions, 3746 flow [2024-06-28 00:56:57,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3600, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3746, PETRI_PLACES=296, PETRI_TRANSITIONS=287} [2024-06-28 00:56:57,780 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 253 predicate places. [2024-06-28 00:56:57,780 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 287 transitions, 3746 flow [2024-06-28 00:56:57,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:56:57,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:57,780 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 00:56:57,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:56:57,781 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:56:57,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:57,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1715096707, now seen corresponding path program 9 times [2024-06-28 00:56:57,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:57,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99281939] [2024-06-28 00:56:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:57,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:59,972 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 00:56:59,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:59,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99281939] [2024-06-28 00:56:59,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99281939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:59,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:59,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:59,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481450484] [2024-06-28 00:56:59,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:59,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:59,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:59,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:59,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:00,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:00,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 287 transitions, 3746 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:00,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:00,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:00,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:01,036 INFO L124 PetriNetUnfolderBase]: 1596/2884 cut-off events. [2024-06-28 00:57:01,036 INFO L125 PetriNetUnfolderBase]: For 103389/103389 co-relation queries the response was YES. [2024-06-28 00:57:01,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19902 conditions, 2884 events. 1596/2884 cut-off events. For 103389/103389 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 17185 event pairs, 386 based on Foata normal form. 2/2750 useless extension candidates. Maximal degree in co-relation 19769. Up to 2504 conditions per place. [2024-06-28 00:57:01,069 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 271 selfloop transitions, 39 changer transitions 0/317 dead transitions. [2024-06-28 00:57:01,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 317 transitions, 4582 flow [2024-06-28 00:57:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:57:01,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2024-06-28 00:57:01,071 INFO L175 Difference]: Start difference. First operand has 296 places, 287 transitions, 3746 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:57:01,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 317 transitions, 4582 flow [2024-06-28 00:57:01,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 317 transitions, 4466 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 00:57:01,552 INFO L231 Difference]: Finished difference. Result has 297 places, 288 transitions, 3748 flow [2024-06-28 00:57:01,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3630, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3748, PETRI_PLACES=297, PETRI_TRANSITIONS=288} [2024-06-28 00:57:01,552 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 254 predicate places. [2024-06-28 00:57:01,553 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 288 transitions, 3748 flow [2024-06-28 00:57:01,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:01,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:01,553 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 00:57:01,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:57:01,553 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:01,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:01,554 INFO L85 PathProgramCache]: Analyzing trace with hash -142779063, now seen corresponding path program 3 times [2024-06-28 00:57:01,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:01,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070637415] [2024-06-28 00:57:01,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:01,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:04,178 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 00:57:04,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:04,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070637415] [2024-06-28 00:57:04,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070637415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:04,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:04,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:04,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80080311] [2024-06-28 00:57:04,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:04,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:04,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:04,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:04,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:04,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:04,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 288 transitions, 3748 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:04,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:04,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:04,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:05,470 INFO L124 PetriNetUnfolderBase]: 1607/2901 cut-off events. [2024-06-28 00:57:05,470 INFO L125 PetriNetUnfolderBase]: For 107055/107055 co-relation queries the response was YES. [2024-06-28 00:57:05,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20105 conditions, 2901 events. 1607/2901 cut-off events. For 107055/107055 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17356 event pairs, 387 based on Foata normal form. 2/2765 useless extension candidates. Maximal degree in co-relation 19971. Up to 2519 conditions per place. [2024-06-28 00:57:05,502 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 269 selfloop transitions, 42 changer transitions 0/318 dead transitions. [2024-06-28 00:57:05,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 318 transitions, 4558 flow [2024-06-28 00:57:05,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:57:05,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:57:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 00:57:05,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38927738927738925 [2024-06-28 00:57:05,503 INFO L175 Difference]: Start difference. First operand has 297 places, 288 transitions, 3748 flow. Second operand 11 states and 167 transitions. [2024-06-28 00:57:05,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 318 transitions, 4558 flow [2024-06-28 00:57:05,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 318 transitions, 4464 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 00:57:05,958 INFO L231 Difference]: Finished difference. Result has 300 places, 290 transitions, 3813 flow [2024-06-28 00:57:05,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3654, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3813, PETRI_PLACES=300, PETRI_TRANSITIONS=290} [2024-06-28 00:57:05,959 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 257 predicate places. [2024-06-28 00:57:05,959 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 290 transitions, 3813 flow [2024-06-28 00:57:05,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:05,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:05,960 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 00:57:05,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:57:05,960 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:05,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:05,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1722725063, now seen corresponding path program 4 times [2024-06-28 00:57:05,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:05,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045750163] [2024-06-28 00:57:05,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:05,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:08,650 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 00:57:08,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:08,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045750163] [2024-06-28 00:57:08,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045750163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:08,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:08,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:08,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721628354] [2024-06-28 00:57:08,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:08,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:08,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:08,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:08,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:08,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:08,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 290 transitions, 3813 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:08,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:08,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:08,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:10,072 INFO L124 PetriNetUnfolderBase]: 1633/2941 cut-off events. [2024-06-28 00:57:10,072 INFO L125 PetriNetUnfolderBase]: For 115252/115252 co-relation queries the response was YES. [2024-06-28 00:57:10,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20630 conditions, 2941 events. 1633/2941 cut-off events. For 115252/115252 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17546 event pairs, 383 based on Foata normal form. 2/2803 useless extension candidates. Maximal degree in co-relation 20495. Up to 2344 conditions per place. [2024-06-28 00:57:10,102 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 243 selfloop transitions, 76 changer transitions 0/326 dead transitions. [2024-06-28 00:57:10,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 326 transitions, 4879 flow [2024-06-28 00:57:10,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:57:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:57:10,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 00:57:10,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40559440559440557 [2024-06-28 00:57:10,103 INFO L175 Difference]: Start difference. First operand has 300 places, 290 transitions, 3813 flow. Second operand 11 states and 174 transitions. [2024-06-28 00:57:10,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 326 transitions, 4879 flow [2024-06-28 00:57:10,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 326 transitions, 4740 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 00:57:10,622 INFO L231 Difference]: Finished difference. Result has 302 places, 294 transitions, 3976 flow [2024-06-28 00:57:10,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3674, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3976, PETRI_PLACES=302, PETRI_TRANSITIONS=294} [2024-06-28 00:57:10,622 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 259 predicate places. [2024-06-28 00:57:10,622 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 294 transitions, 3976 flow [2024-06-28 00:57:10,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:10,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:10,623 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 00:57:10,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:57:10,623 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:10,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1715091127, now seen corresponding path program 10 times [2024-06-28 00:57:10,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:10,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682415158] [2024-06-28 00:57:10,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:12,461 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 00:57:12,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:12,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682415158] [2024-06-28 00:57:12,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682415158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:12,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:12,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:12,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994339351] [2024-06-28 00:57:12,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:12,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:12,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:12,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:12,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:12,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 294 transitions, 3976 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:12,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:12,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:12,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:13,515 INFO L124 PetriNetUnfolderBase]: 1653/2984 cut-off events. [2024-06-28 00:57:13,516 INFO L125 PetriNetUnfolderBase]: For 119691/119691 co-relation queries the response was YES. [2024-06-28 00:57:13,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21154 conditions, 2984 events. 1653/2984 cut-off events. For 119691/119691 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17957 event pairs, 383 based on Foata normal form. 2/2844 useless extension candidates. Maximal degree in co-relation 21018. Up to 2589 conditions per place. [2024-06-28 00:57:13,553 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 281 selfloop transitions, 39 changer transitions 0/327 dead transitions. [2024-06-28 00:57:13,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 327 transitions, 4876 flow [2024-06-28 00:57:13,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:13,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:13,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 00:57:13,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40512820512820513 [2024-06-28 00:57:13,554 INFO L175 Difference]: Start difference. First operand has 302 places, 294 transitions, 3976 flow. Second operand 10 states and 158 transitions. [2024-06-28 00:57:13,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 327 transitions, 4876 flow [2024-06-28 00:57:14,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 327 transitions, 4715 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 00:57:14,084 INFO L231 Difference]: Finished difference. Result has 306 places, 297 transitions, 3978 flow [2024-06-28 00:57:14,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3978, PETRI_PLACES=306, PETRI_TRANSITIONS=297} [2024-06-28 00:57:14,085 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 263 predicate places. [2024-06-28 00:57:14,085 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 297 transitions, 3978 flow [2024-06-28 00:57:14,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:14,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:14,086 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 00:57:14,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:57:14,086 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:14,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:14,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1722456293, now seen corresponding path program 5 times [2024-06-28 00:57:14,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:14,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751638194] [2024-06-28 00:57:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:14,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:16,474 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 00:57:16,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:16,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751638194] [2024-06-28 00:57:16,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751638194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:16,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:16,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:16,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944387839] [2024-06-28 00:57:16,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:16,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:16,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:16,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:16,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:16,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:16,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 297 transitions, 3978 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:16,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:16,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:16,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:17,797 INFO L124 PetriNetUnfolderBase]: 1664/3001 cut-off events. [2024-06-28 00:57:17,797 INFO L125 PetriNetUnfolderBase]: For 122235/122235 co-relation queries the response was YES. [2024-06-28 00:57:17,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21349 conditions, 3001 events. 1664/3001 cut-off events. For 122235/122235 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18075 event pairs, 391 based on Foata normal form. 2/2859 useless extension candidates. Maximal degree in co-relation 21210. Up to 2552 conditions per place. [2024-06-28 00:57:17,838 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 269 selfloop transitions, 52 changer transitions 0/328 dead transitions. [2024-06-28 00:57:17,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 328 transitions, 4810 flow [2024-06-28 00:57:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:57:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:57:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 00:57:17,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 00:57:17,839 INFO L175 Difference]: Start difference. First operand has 306 places, 297 transitions, 3978 flow. Second operand 11 states and 169 transitions. [2024-06-28 00:57:17,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 328 transitions, 4810 flow [2024-06-28 00:57:18,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 328 transitions, 4693 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 00:57:18,433 INFO L231 Difference]: Finished difference. Result has 310 places, 299 transitions, 4036 flow [2024-06-28 00:57:18,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3861, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4036, PETRI_PLACES=310, PETRI_TRANSITIONS=299} [2024-06-28 00:57:18,433 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 267 predicate places. [2024-06-28 00:57:18,433 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 299 transitions, 4036 flow [2024-06-28 00:57:18,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:18,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:18,434 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 00:57:18,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:57:18,434 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:18,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:18,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1722715763, now seen corresponding path program 6 times [2024-06-28 00:57:18,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:18,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836170942] [2024-06-28 00:57:18,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:18,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:20,984 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 00:57:20,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:20,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836170942] [2024-06-28 00:57:20,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836170942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:20,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:20,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:20,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025860684] [2024-06-28 00:57:20,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:20,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:20,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:20,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:21,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:21,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 299 transitions, 4036 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:21,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:21,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:21,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:22,377 INFO L124 PetriNetUnfolderBase]: 1660/2995 cut-off events. [2024-06-28 00:57:22,377 INFO L125 PetriNetUnfolderBase]: For 116911/116911 co-relation queries the response was YES. [2024-06-28 00:57:22,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21036 conditions, 2995 events. 1660/2995 cut-off events. For 116911/116911 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18043 event pairs, 387 based on Foata normal form. 2/2853 useless extension candidates. Maximal degree in co-relation 20896. Up to 2473 conditions per place. [2024-06-28 00:57:22,412 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 258 selfloop transitions, 64 changer transitions 0/329 dead transitions. [2024-06-28 00:57:22,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 329 transitions, 4814 flow [2024-06-28 00:57:22,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:57:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:57:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 00:57:22,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3986013986013986 [2024-06-28 00:57:22,414 INFO L175 Difference]: Start difference. First operand has 310 places, 299 transitions, 4036 flow. Second operand 11 states and 171 transitions. [2024-06-28 00:57:22,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 329 transitions, 4814 flow [2024-06-28 00:57:22,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 329 transitions, 4629 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 00:57:22,959 INFO L231 Difference]: Finished difference. Result has 312 places, 299 transitions, 3984 flow [2024-06-28 00:57:22,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3851, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3984, PETRI_PLACES=312, PETRI_TRANSITIONS=299} [2024-06-28 00:57:22,959 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 269 predicate places. [2024-06-28 00:57:22,959 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 299 transitions, 3984 flow [2024-06-28 00:57:22,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:22,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:22,960 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 00:57:22,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:57:22,960 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:22,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:22,960 INFO L85 PathProgramCache]: Analyzing trace with hash -671921647, now seen corresponding path program 1 times [2024-06-28 00:57:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:22,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167743429] [2024-06-28 00:57:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:22,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:25,360 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 00:57:25,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:25,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167743429] [2024-06-28 00:57:25,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167743429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:25,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:25,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:25,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990229283] [2024-06-28 00:57:25,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:25,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:25,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:25,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:25,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:25,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:25,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 299 transitions, 3984 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:25,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:25,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:25,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:26,496 INFO L124 PetriNetUnfolderBase]: 1692/3047 cut-off events. [2024-06-28 00:57:26,496 INFO L125 PetriNetUnfolderBase]: For 128194/128194 co-relation queries the response was YES. [2024-06-28 00:57:26,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21488 conditions, 3047 events. 1692/3047 cut-off events. For 128194/128194 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18610 event pairs, 479 based on Foata normal form. 4/2910 useless extension candidates. Maximal degree in co-relation 21347. Up to 2695 conditions per place. [2024-06-28 00:57:26,533 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 295 selfloop transitions, 27 changer transitions 0/329 dead transitions. [2024-06-28 00:57:26,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 329 transitions, 4882 flow [2024-06-28 00:57:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:57:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:57:26,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 00:57:26,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-28 00:57:26,534 INFO L175 Difference]: Start difference. First operand has 312 places, 299 transitions, 3984 flow. Second operand 11 states and 164 transitions. [2024-06-28 00:57:26,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 329 transitions, 4882 flow [2024-06-28 00:57:27,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 329 transitions, 4713 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 00:57:27,068 INFO L231 Difference]: Finished difference. Result has 313 places, 301 transitions, 3968 flow [2024-06-28 00:57:27,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3815, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3968, PETRI_PLACES=313, PETRI_TRANSITIONS=301} [2024-06-28 00:57:27,068 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 270 predicate places. [2024-06-28 00:57:27,068 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 301 transitions, 3968 flow [2024-06-28 00:57:27,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:27,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:27,069 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 00:57:27,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:57:27,069 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:27,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:27,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1715607469, now seen corresponding path program 11 times [2024-06-28 00:57:27,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:27,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033936333] [2024-06-28 00:57:27,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:27,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:29,254 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 00:57:29,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:29,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033936333] [2024-06-28 00:57:29,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033936333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:29,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:29,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:57:29,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626892391] [2024-06-28 00:57:29,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:29,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:57:29,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:29,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:57:29,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:57:29,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:29,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 301 transitions, 3968 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:29,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:29,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:29,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:30,480 INFO L124 PetriNetUnfolderBase]: 1712/3100 cut-off events. [2024-06-28 00:57:30,480 INFO L125 PetriNetUnfolderBase]: For 127301/127301 co-relation queries the response was YES. [2024-06-28 00:57:30,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21829 conditions, 3100 events. 1712/3100 cut-off events. For 127301/127301 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 18893 event pairs, 487 based on Foata normal form. 2/2957 useless extension candidates. Maximal degree in co-relation 21687. Up to 2634 conditions per place. [2024-06-28 00:57:30,520 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 280 selfloop transitions, 41 changer transitions 0/328 dead transitions. [2024-06-28 00:57:30,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 328 transitions, 4824 flow [2024-06-28 00:57:30,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:57:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:57:30,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:57:30,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39886039886039887 [2024-06-28 00:57:30,522 INFO L175 Difference]: Start difference. First operand has 313 places, 301 transitions, 3968 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:57:30,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 328 transitions, 4824 flow [2024-06-28 00:57:31,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 328 transitions, 4687 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-28 00:57:31,159 INFO L231 Difference]: Finished difference. Result has 313 places, 302 transitions, 3963 flow [2024-06-28 00:57:31,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3831, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3963, PETRI_PLACES=313, PETRI_TRANSITIONS=302} [2024-06-28 00:57:31,159 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 270 predicate places. [2024-06-28 00:57:31,159 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 302 transitions, 3963 flow [2024-06-28 00:57:31,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:31,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:31,160 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 00:57:31,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 00:57:31,160 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:31,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:31,160 INFO L85 PathProgramCache]: Analyzing trace with hash 630808363, now seen corresponding path program 12 times [2024-06-28 00:57:31,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:31,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370874696] [2024-06-28 00:57:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:31,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:33,222 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 00:57:33,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:33,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370874696] [2024-06-28 00:57:33,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370874696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:33,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:33,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:33,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103084360] [2024-06-28 00:57:33,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:33,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:33,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:33,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:33,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:33,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:33,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 302 transitions, 3963 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:33,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:33,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:33,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:34,597 INFO L124 PetriNetUnfolderBase]: 1784/3231 cut-off events. [2024-06-28 00:57:34,598 INFO L125 PetriNetUnfolderBase]: For 130404/130404 co-relation queries the response was YES. [2024-06-28 00:57:34,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22858 conditions, 3231 events. 1784/3231 cut-off events. For 130404/130404 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 20052 event pairs, 449 based on Foata normal form. 2/3082 useless extension candidates. Maximal degree in co-relation 22715. Up to 2806 conditions per place. [2024-06-28 00:57:34,632 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 299 selfloop transitions, 44 changer transitions 0/350 dead transitions. [2024-06-28 00:57:34,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 350 transitions, 5229 flow [2024-06-28 00:57:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:34,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 00:57:34,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39487179487179486 [2024-06-28 00:57:34,633 INFO L175 Difference]: Start difference. First operand has 313 places, 302 transitions, 3963 flow. Second operand 10 states and 154 transitions. [2024-06-28 00:57:34,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 350 transitions, 5229 flow [2024-06-28 00:57:35,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 350 transitions, 5111 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:57:35,201 INFO L231 Difference]: Finished difference. Result has 319 places, 322 transitions, 4397 flow [2024-06-28 00:57:35,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3867, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4397, PETRI_PLACES=319, PETRI_TRANSITIONS=322} [2024-06-28 00:57:35,202 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 276 predicate places. [2024-06-28 00:57:35,202 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 322 transitions, 4397 flow [2024-06-28 00:57:35,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:35,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:35,202 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 00:57:35,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 00:57:35,203 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:35,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:35,203 INFO L85 PathProgramCache]: Analyzing trace with hash 628905583, now seen corresponding path program 13 times [2024-06-28 00:57:35,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:35,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909267413] [2024-06-28 00:57:35,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:35,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:37,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:37,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909267413] [2024-06-28 00:57:37,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909267413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:37,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:37,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:37,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003700753] [2024-06-28 00:57:37,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:37,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:37,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:37,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:37,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:37,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:37,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 322 transitions, 4397 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:37,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:37,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:37,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:38,281 INFO L124 PetriNetUnfolderBase]: 1800/3274 cut-off events. [2024-06-28 00:57:38,281 INFO L125 PetriNetUnfolderBase]: For 135910/135910 co-relation queries the response was YES. [2024-06-28 00:57:38,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23339 conditions, 3274 events. 1800/3274 cut-off events. For 135910/135910 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 20339 event pairs, 359 based on Foata normal form. 2/3121 useless extension candidates. Maximal degree in co-relation 23192. Up to 2614 conditions per place. [2024-06-28 00:57:38,322 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 279 selfloop transitions, 67 changer transitions 0/353 dead transitions. [2024-06-28 00:57:38,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 353 transitions, 5379 flow [2024-06-28 00:57:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:57:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:57:38,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:57:38,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017094017094017 [2024-06-28 00:57:38,324 INFO L175 Difference]: Start difference. First operand has 319 places, 322 transitions, 4397 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:57:38,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 353 transitions, 5379 flow [2024-06-28 00:57:38,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 353 transitions, 5248 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 00:57:38,972 INFO L231 Difference]: Finished difference. Result has 323 places, 327 transitions, 4599 flow [2024-06-28 00:57:38,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4266, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4599, PETRI_PLACES=323, PETRI_TRANSITIONS=327} [2024-06-28 00:57:38,973 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 280 predicate places. [2024-06-28 00:57:38,973 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 327 transitions, 4599 flow [2024-06-28 00:57:38,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:38,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:38,973 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 00:57:38,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 00:57:38,973 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:38,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:38,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1959199025, now seen corresponding path program 7 times [2024-06-28 00:57:38,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:38,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073840144] [2024-06-28 00:57:38,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:38,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:41,284 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 00:57:41,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:41,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073840144] [2024-06-28 00:57:41,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073840144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:41,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:41,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:41,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151646082] [2024-06-28 00:57:41,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:41,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:41,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:41,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:41,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:41,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:41,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 327 transitions, 4599 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:41,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:41,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:41,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:42,554 INFO L124 PetriNetUnfolderBase]: 1811/3295 cut-off events. [2024-06-28 00:57:42,554 INFO L125 PetriNetUnfolderBase]: For 140800/140800 co-relation queries the response was YES. [2024-06-28 00:57:42,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23813 conditions, 3295 events. 1811/3295 cut-off events. For 140800/140800 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20526 event pairs, 516 based on Foata normal form. 2/3140 useless extension candidates. Maximal degree in co-relation 23664. Up to 2787 conditions per place. [2024-06-28 00:57:42,594 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 283 selfloop transitions, 64 changer transitions 0/354 dead transitions. [2024-06-28 00:57:42,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 354 transitions, 5479 flow [2024-06-28 00:57:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:42,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 00:57:42,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 00:57:42,596 INFO L175 Difference]: Start difference. First operand has 323 places, 327 transitions, 4599 flow. Second operand 10 states and 150 transitions. [2024-06-28 00:57:42,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 354 transitions, 5479 flow [2024-06-28 00:57:43,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 354 transitions, 5280 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 00:57:43,252 INFO L231 Difference]: Finished difference. Result has 327 places, 329 transitions, 4620 flow [2024-06-28 00:57:43,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4400, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4620, PETRI_PLACES=327, PETRI_TRANSITIONS=329} [2024-06-28 00:57:43,253 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 284 predicate places. [2024-06-28 00:57:43,253 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 329 transitions, 4620 flow [2024-06-28 00:57:43,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:43,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:43,253 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 00:57:43,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 00:57:43,254 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:43,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:43,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1642323129, now seen corresponding path program 14 times [2024-06-28 00:57:43,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:43,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10365741] [2024-06-28 00:57:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:43,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:45,355 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 00:57:45,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:45,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10365741] [2024-06-28 00:57:45,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10365741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:45,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:45,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:45,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928422538] [2024-06-28 00:57:45,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:45,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:45,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:45,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:45,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:45,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:45,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 329 transitions, 4620 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:45,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:45,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:45,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:46,621 INFO L124 PetriNetUnfolderBase]: 1831/3331 cut-off events. [2024-06-28 00:57:46,622 INFO L125 PetriNetUnfolderBase]: For 141678/141678 co-relation queries the response was YES. [2024-06-28 00:57:46,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24043 conditions, 3331 events. 1831/3331 cut-off events. For 141678/141678 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 20771 event pairs, 435 based on Foata normal form. 2/3174 useless extension candidates. Maximal degree in co-relation 23893. Up to 2821 conditions per place. [2024-06-28 00:57:46,660 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 295 selfloop transitions, 54 changer transitions 0/356 dead transitions. [2024-06-28 00:57:46,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 356 transitions, 5546 flow [2024-06-28 00:57:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:57:46,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:57:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:57:46,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017094017094017 [2024-06-28 00:57:46,662 INFO L175 Difference]: Start difference. First operand has 327 places, 329 transitions, 4620 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:57:46,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 356 transitions, 5546 flow [2024-06-28 00:57:47,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 356 transitions, 5354 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 00:57:47,302 INFO L231 Difference]: Finished difference. Result has 328 places, 330 transitions, 4588 flow [2024-06-28 00:57:47,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4428, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4588, PETRI_PLACES=328, PETRI_TRANSITIONS=330} [2024-06-28 00:57:47,302 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 285 predicate places. [2024-06-28 00:57:47,303 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 330 transitions, 4588 flow [2024-06-28 00:57:47,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:47,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:47,303 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 00:57:47,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 00:57:47,303 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:47,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:47,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1642317549, now seen corresponding path program 15 times [2024-06-28 00:57:47,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:47,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998607616] [2024-06-28 00:57:47,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:47,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:49,341 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 00:57:49,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:49,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998607616] [2024-06-28 00:57:49,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998607616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:49,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:49,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:49,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472558938] [2024-06-28 00:57:49,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:49,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:49,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:49,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:49,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:49,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:49,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 330 transitions, 4588 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:49,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:49,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:49,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:50,606 INFO L124 PetriNetUnfolderBase]: 1851/3374 cut-off events. [2024-06-28 00:57:50,607 INFO L125 PetriNetUnfolderBase]: For 143334/143334 co-relation queries the response was YES. [2024-06-28 00:57:50,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24378 conditions, 3374 events. 1851/3374 cut-off events. For 143334/143334 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 21170 event pairs, 417 based on Foata normal form. 2/3214 useless extension candidates. Maximal degree in co-relation 24227. Up to 2841 conditions per place. [2024-06-28 00:57:50,652 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 299 selfloop transitions, 54 changer transitions 0/360 dead transitions. [2024-06-28 00:57:50,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 360 transitions, 5572 flow [2024-06-28 00:57:50,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:57:50,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:57:50,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:57:50,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045584045584046 [2024-06-28 00:57:50,654 INFO L175 Difference]: Start difference. First operand has 328 places, 330 transitions, 4588 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:57:50,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 360 transitions, 5572 flow [2024-06-28 00:57:51,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 360 transitions, 5430 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 00:57:51,363 INFO L231 Difference]: Finished difference. Result has 331 places, 333 transitions, 4660 flow [2024-06-28 00:57:51,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4660, PETRI_PLACES=331, PETRI_TRANSITIONS=333} [2024-06-28 00:57:51,364 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 288 predicate places. [2024-06-28 00:57:51,364 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 333 transitions, 4660 flow [2024-06-28 00:57:51,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:51,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:51,364 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 00:57:51,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 00:57:51,364 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:51,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1642532875, now seen corresponding path program 8 times [2024-06-28 00:57:51,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:51,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103399717] [2024-06-28 00:57:51,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:51,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:53,814 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 00:57:53,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:53,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103399717] [2024-06-28 00:57:53,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103399717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:53,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:53,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:53,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819968044] [2024-06-28 00:57:53,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:53,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:53,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:53,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:53,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:53,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:53,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 333 transitions, 4660 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:53,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:53,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:53,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:55,190 INFO L124 PetriNetUnfolderBase]: 1862/3391 cut-off events. [2024-06-28 00:57:55,191 INFO L125 PetriNetUnfolderBase]: For 143223/143223 co-relation queries the response was YES. [2024-06-28 00:57:55,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24492 conditions, 3391 events. 1862/3391 cut-off events. For 143223/143223 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 21260 event pairs, 443 based on Foata normal form. 2/3228 useless extension candidates. Maximal degree in co-relation 24339. Up to 2870 conditions per place. [2024-06-28 00:57:55,237 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 293 selfloop transitions, 60 changer transitions 0/360 dead transitions. [2024-06-28 00:57:55,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 360 transitions, 5550 flow [2024-06-28 00:57:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:55,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 00:57:55,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871794871794872 [2024-06-28 00:57:55,239 INFO L175 Difference]: Start difference. First operand has 331 places, 333 transitions, 4660 flow. Second operand 10 states and 151 transitions. [2024-06-28 00:57:55,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 360 transitions, 5550 flow [2024-06-28 00:57:55,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 360 transitions, 5396 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 00:57:55,935 INFO L231 Difference]: Finished difference. Result has 335 places, 335 transitions, 4708 flow [2024-06-28 00:57:55,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4506, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4708, PETRI_PLACES=335, PETRI_TRANSITIONS=335} [2024-06-28 00:57:55,935 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 292 predicate places. [2024-06-28 00:57:55,935 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 335 transitions, 4708 flow [2024-06-28 00:57:55,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:55,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:55,936 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 00:57:55,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 00:57:55,936 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:57:55,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:55,936 INFO L85 PathProgramCache]: Analyzing trace with hash 32783143, now seen corresponding path program 9 times [2024-06-28 00:57:55,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:55,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108293817] [2024-06-28 00:57:55,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:55,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:58,595 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 00:57:58,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:58,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108293817] [2024-06-28 00:57:58,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108293817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:58,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:58,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:58,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525122634] [2024-06-28 00:57:58,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:58,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:58,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:58,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:58,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:58,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:57:58,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 335 transitions, 4708 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:57:58,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:58,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:57:58,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:00,088 INFO L124 PetriNetUnfolderBase]: 1873/3408 cut-off events. [2024-06-28 00:58:00,088 INFO L125 PetriNetUnfolderBase]: For 141552/141552 co-relation queries the response was YES. [2024-06-28 00:58:00,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24515 conditions, 3408 events. 1873/3408 cut-off events. For 141552/141552 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 21395 event pairs, 428 based on Foata normal form. 2/3244 useless extension candidates. Maximal degree in co-relation 24361. Up to 2649 conditions per place. [2024-06-28 00:58:00,138 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 261 selfloop transitions, 96 changer transitions 0/364 dead transitions. [2024-06-28 00:58:00,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 364 transitions, 5622 flow [2024-06-28 00:58:00,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:58:00,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:58:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:58:00,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-06-28 00:58:00,140 INFO L175 Difference]: Start difference. First operand has 335 places, 335 transitions, 4708 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:58:00,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 364 transitions, 5622 flow [2024-06-28 00:58:00,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 364 transitions, 5444 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 00:58:00,855 INFO L231 Difference]: Finished difference. Result has 337 places, 337 transitions, 4808 flow [2024-06-28 00:58:00,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4534, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4808, PETRI_PLACES=337, PETRI_TRANSITIONS=337} [2024-06-28 00:58:00,868 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 294 predicate places. [2024-06-28 00:58:00,868 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 337 transitions, 4808 flow [2024-06-28 00:58:00,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:00,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:00,869 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 00:58:00,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 00:58:00,869 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:58:00,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:00,869 INFO L85 PathProgramCache]: Analyzing trace with hash 32792784, now seen corresponding path program 2 times [2024-06-28 00:58:00,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:00,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053763339] [2024-06-28 00:58:00,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:00,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:03,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:03,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053763339] [2024-06-28 00:58:03,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053763339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:03,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:03,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:03,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16593762] [2024-06-28 00:58:03,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:03,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:03,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:03,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:03,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:03,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:58:03,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 337 transitions, 4808 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:03,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:03,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:58:03,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:05,033 INFO L124 PetriNetUnfolderBase]: 1871/3407 cut-off events. [2024-06-28 00:58:05,033 INFO L125 PetriNetUnfolderBase]: For 133959/133959 co-relation queries the response was YES. [2024-06-28 00:58:05,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24463 conditions, 3407 events. 1871/3407 cut-off events. For 133959/133959 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 21465 event pairs, 593 based on Foata normal form. 1/3243 useless extension candidates. Maximal degree in co-relation 24308. Up to 2942 conditions per place. [2024-06-28 00:58:05,079 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 300 selfloop transitions, 55 changer transitions 0/362 dead transitions. [2024-06-28 00:58:05,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 362 transitions, 5712 flow [2024-06-28 00:58:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:58:05,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:58:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 00:58:05,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3769230769230769 [2024-06-28 00:58:05,086 INFO L175 Difference]: Start difference. First operand has 337 places, 337 transitions, 4808 flow. Second operand 10 states and 147 transitions. [2024-06-28 00:58:05,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 362 transitions, 5712 flow [2024-06-28 00:58:05,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 362 transitions, 5456 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-28 00:58:05,799 INFO L231 Difference]: Finished difference. Result has 337 places, 339 transitions, 4748 flow [2024-06-28 00:58:05,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4552, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4748, PETRI_PLACES=337, PETRI_TRANSITIONS=339} [2024-06-28 00:58:05,799 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 294 predicate places. [2024-06-28 00:58:05,799 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 339 transitions, 4748 flow [2024-06-28 00:58:05,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:05,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:05,800 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 00:58:05,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 00:58:05,800 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:58:05,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:05,800 INFO L85 PathProgramCache]: Analyzing trace with hash 32515737, now seen corresponding path program 16 times [2024-06-28 00:58:05,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:05,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725159659] [2024-06-28 00:58:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:08,334 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 00:58:08,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:08,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725159659] [2024-06-28 00:58:08,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725159659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:08,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:08,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:08,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815852306] [2024-06-28 00:58:08,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:08,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:08,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:08,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:08,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:08,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:58:08,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 339 transitions, 4748 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:08,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:08,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:58:08,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:09,709 INFO L124 PetriNetUnfolderBase]: 1891/3448 cut-off events. [2024-06-28 00:58:09,709 INFO L125 PetriNetUnfolderBase]: For 139642/139642 co-relation queries the response was YES. [2024-06-28 00:58:09,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24676 conditions, 3448 events. 1891/3448 cut-off events. For 139642/139642 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 21724 event pairs, 441 based on Foata normal form. 2/3283 useless extension candidates. Maximal degree in co-relation 24522. Up to 2816 conditions per place. [2024-06-28 00:58:09,755 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 290 selfloop transitions, 70 changer transitions 0/367 dead transitions. [2024-06-28 00:58:09,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 367 transitions, 5704 flow [2024-06-28 00:58:09,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:58:09,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:58:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 00:58:09,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-28 00:58:09,756 INFO L175 Difference]: Start difference. First operand has 337 places, 339 transitions, 4748 flow. Second operand 9 states and 143 transitions. [2024-06-28 00:58:09,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 367 transitions, 5704 flow [2024-06-28 00:58:10,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 367 transitions, 5542 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 00:58:10,478 INFO L231 Difference]: Finished difference. Result has 338 places, 340 transitions, 4778 flow [2024-06-28 00:58:10,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4586, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4778, PETRI_PLACES=338, PETRI_TRANSITIONS=340} [2024-06-28 00:58:10,478 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 295 predicate places. [2024-06-28 00:58:10,478 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 340 transitions, 4778 flow [2024-06-28 00:58:10,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:10,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:10,479 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 00:58:10,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 00:58:10,479 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:58:10,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:10,479 INFO L85 PathProgramCache]: Analyzing trace with hash 14358417, now seen corresponding path program 10 times [2024-06-28 00:58:10,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:10,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303181171] [2024-06-28 00:58:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:10,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:13,544 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 00:58:13,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:13,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303181171] [2024-06-28 00:58:13,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303181171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:13,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:13,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:13,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366634668] [2024-06-28 00:58:13,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:13,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:13,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:13,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:13,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:13,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:58:13,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 340 transitions, 4778 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:13,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:13,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:58:13,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:15,246 INFO L124 PetriNetUnfolderBase]: 1977/3580 cut-off events. [2024-06-28 00:58:15,247 INFO L125 PetriNetUnfolderBase]: For 147725/147725 co-relation queries the response was YES. [2024-06-28 00:58:15,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26181 conditions, 3580 events. 1977/3580 cut-off events. For 147725/147725 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22699 event pairs, 474 based on Foata normal form. 2/3398 useless extension candidates. Maximal degree in co-relation 26026. Up to 2925 conditions per place. [2024-06-28 00:58:15,298 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 305 selfloop transitions, 111 changer transitions 0/423 dead transitions. [2024-06-28 00:58:15,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 423 transitions, 6788 flow [2024-06-28 00:58:15,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:58:15,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:58:15,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 00:58:15,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-06-28 00:58:15,299 INFO L175 Difference]: Start difference. First operand has 338 places, 340 transitions, 4778 flow. Second operand 11 states and 173 transitions. [2024-06-28 00:58:15,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 423 transitions, 6788 flow [2024-06-28 00:58:16,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 423 transitions, 6591 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 00:58:16,025 INFO L231 Difference]: Finished difference. Result has 346 places, 386 transitions, 5796 flow [2024-06-28 00:58:16,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4614, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5796, PETRI_PLACES=346, PETRI_TRANSITIONS=386} [2024-06-28 00:58:16,026 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 303 predicate places. [2024-06-28 00:58:16,026 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 386 transitions, 5796 flow [2024-06-28 00:58:16,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:16,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:16,027 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 00:58:16,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 00:58:16,027 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:58:16,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:16,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2108074151, now seen corresponding path program 11 times [2024-06-28 00:58:16,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:16,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521240077] [2024-06-28 00:58:16,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:16,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:18,329 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 00:58:18,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:18,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521240077] [2024-06-28 00:58:18,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521240077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:18,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:18,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:18,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929876555] [2024-06-28 00:58:18,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:18,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:18,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:18,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:18,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:18,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:58:18,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 386 transitions, 5796 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:18,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:18,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:58:18,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:19,836 INFO L124 PetriNetUnfolderBase]: 1973/3586 cut-off events. [2024-06-28 00:58:19,837 INFO L125 PetriNetUnfolderBase]: For 139667/139667 co-relation queries the response was YES. [2024-06-28 00:58:19,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26313 conditions, 3586 events. 1973/3586 cut-off events. For 139667/139667 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22771 event pairs, 439 based on Foata normal form. 2/3401 useless extension candidates. Maximal degree in co-relation 26153. Up to 2928 conditions per place. [2024-06-28 00:58:19,888 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 311 selfloop transitions, 94 changer transitions 0/412 dead transitions. [2024-06-28 00:58:19,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 412 transitions, 6726 flow [2024-06-28 00:58:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:58:19,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:58:19,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:58:19,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2024-06-28 00:58:19,889 INFO L175 Difference]: Start difference. First operand has 346 places, 386 transitions, 5796 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:58:19,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 412 transitions, 6726 flow [2024-06-28 00:58:20,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 412 transitions, 6585 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-28 00:58:20,677 INFO L231 Difference]: Finished difference. Result has 352 places, 386 transitions, 5854 flow [2024-06-28 00:58:20,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5655, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5854, PETRI_PLACES=352, PETRI_TRANSITIONS=386} [2024-06-28 00:58:20,677 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 309 predicate places. [2024-06-28 00:58:20,678 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 386 transitions, 5854 flow [2024-06-28 00:58:20,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:20,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:20,678 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 00:58:20,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 00:58:20,678 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:58:20,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:20,679 INFO L85 PathProgramCache]: Analyzing trace with hash -132033963, now seen corresponding path program 2 times [2024-06-28 00:58:20,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:20,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120361340] [2024-06-28 00:58:20,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:20,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:24,424 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 00:58:24,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:24,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120361340] [2024-06-28 00:58:24,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120361340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:24,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:24,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:24,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733705274] [2024-06-28 00:58:24,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:24,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:24,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:24,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:24,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:58:24,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 386 transitions, 5854 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:24,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:24,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:58:24,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:25,979 INFO L124 PetriNetUnfolderBase]: 2005/3638 cut-off events. [2024-06-28 00:58:25,979 INFO L125 PetriNetUnfolderBase]: For 151586/151586 co-relation queries the response was YES. [2024-06-28 00:58:26,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27013 conditions, 3638 events. 2005/3638 cut-off events. For 151586/151586 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 23336 event pairs, 551 based on Foata normal form. 4/3460 useless extension candidates. Maximal degree in co-relation 26851. Up to 3115 conditions per place. [2024-06-28 00:58:26,028 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 364 selfloop transitions, 46 changer transitions 0/417 dead transitions. [2024-06-28 00:58:26,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 417 transitions, 6950 flow [2024-06-28 00:58:26,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:58:26,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:58:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-28 00:58:26,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37995337995337997 [2024-06-28 00:58:26,030 INFO L175 Difference]: Start difference. First operand has 352 places, 386 transitions, 5854 flow. Second operand 11 states and 163 transitions. [2024-06-28 00:58:26,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 417 transitions, 6950 flow [2024-06-28 00:58:26,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 417 transitions, 6747 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 00:58:26,793 INFO L231 Difference]: Finished difference. Result has 354 places, 388 transitions, 5849 flow [2024-06-28 00:58:26,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5651, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5849, PETRI_PLACES=354, PETRI_TRANSITIONS=388} [2024-06-28 00:58:26,794 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 311 predicate places. [2024-06-28 00:58:26,794 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 388 transitions, 5849 flow [2024-06-28 00:58:26,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:26,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:26,794 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 00:58:26,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 00:58:26,795 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:58:26,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:26,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1958934467, now seen corresponding path program 17 times [2024-06-28 00:58:26,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:26,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879362386] [2024-06-28 00:58:26,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:26,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:29,042 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 00:58:29,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:29,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879362386] [2024-06-28 00:58:29,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879362386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:29,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:29,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:58:29,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714576423] [2024-06-28 00:58:29,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:29,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:58:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:29,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:58:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:58:29,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:58:29,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 388 transitions, 5849 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:29,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:29,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:58:29,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:30,558 INFO L124 PetriNetUnfolderBase]: 2025/3677 cut-off events. [2024-06-28 00:58:30,558 INFO L125 PetriNetUnfolderBase]: For 149396/149396 co-relation queries the response was YES. [2024-06-28 00:58:30,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27431 conditions, 3677 events. 2025/3677 cut-off events. For 149396/149396 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 23511 event pairs, 452 based on Foata normal form. 2/3489 useless extension candidates. Maximal degree in co-relation 27269. Up to 3139 conditions per place. [2024-06-28 00:58:30,607 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 351 selfloop transitions, 58 changer transitions 0/416 dead transitions. [2024-06-28 00:58:30,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 416 transitions, 6907 flow [2024-06-28 00:58:30,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:58:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:58:30,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 00:58:30,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131054131054131 [2024-06-28 00:58:30,609 INFO L175 Difference]: Start difference. First operand has 354 places, 388 transitions, 5849 flow. Second operand 9 states and 145 transitions. [2024-06-28 00:58:30,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 416 transitions, 6907 flow [2024-06-28 00:58:31,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 416 transitions, 6727 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 00:58:31,438 INFO L231 Difference]: Finished difference. Result has 354 places, 389 transitions, 5837 flow [2024-06-28 00:58:31,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5671, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5837, PETRI_PLACES=354, PETRI_TRANSITIONS=389} [2024-06-28 00:58:31,439 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 311 predicate places. [2024-06-28 00:58:31,439 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 389 transitions, 5837 flow [2024-06-28 00:58:31,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:31,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:31,439 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 00:58:31,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 00:58:31,439 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:58:31,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:31,440 INFO L85 PathProgramCache]: Analyzing trace with hash 157279163, now seen corresponding path program 12 times [2024-06-28 00:58:31,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:31,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924379983] [2024-06-28 00:58:31,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:31,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:34,226 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 00:58:34,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:34,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924379983] [2024-06-28 00:58:34,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924379983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:34,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:34,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:34,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114431400] [2024-06-28 00:58:34,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:34,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:34,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:34,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:34,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:34,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:58:34,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 389 transitions, 5837 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:34,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:34,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:58:34,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:35,897 INFO L124 PetriNetUnfolderBase]: 2051/3715 cut-off events. [2024-06-28 00:58:35,897 INFO L125 PetriNetUnfolderBase]: For 154158/154158 co-relation queries the response was YES. [2024-06-28 00:58:35,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27744 conditions, 3715 events. 2051/3715 cut-off events. For 154158/154158 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 23785 event pairs, 452 based on Foata normal form. 2/3526 useless extension candidates. Maximal degree in co-relation 27581. Up to 3103 conditions per place. [2024-06-28 00:58:35,964 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 346 selfloop transitions, 69 changer transitions 0/422 dead transitions. [2024-06-28 00:58:35,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 422 transitions, 7121 flow [2024-06-28 00:58:35,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:58:35,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:58:35,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:58:35,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 00:58:35,965 INFO L175 Difference]: Start difference. First operand has 354 places, 389 transitions, 5837 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:58:35,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 422 transitions, 7121 flow [2024-06-28 00:58:36,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 422 transitions, 6981 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:58:36,857 INFO L231 Difference]: Finished difference. Result has 357 places, 393 transitions, 6000 flow [2024-06-28 00:58:36,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5697, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6000, PETRI_PLACES=357, PETRI_TRANSITIONS=393} [2024-06-28 00:58:36,858 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 314 predicate places. [2024-06-28 00:58:36,858 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 393 transitions, 6000 flow [2024-06-28 00:58:36,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:36,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:36,858 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 00:58:36,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 00:58:36,859 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:58:36,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:36,859 INFO L85 PathProgramCache]: Analyzing trace with hash 956309867, now seen corresponding path program 13 times [2024-06-28 00:58:36,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:36,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428273555] [2024-06-28 00:58:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:36,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:39,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:39,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428273555] [2024-06-28 00:58:39,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428273555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:39,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:39,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:58:39,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122533671] [2024-06-28 00:58:39,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:39,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:58:39,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:39,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:58:39,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:58:39,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:58:39,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 393 transitions, 6000 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:39,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:39,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:58:39,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:41,196 INFO L124 PetriNetUnfolderBase]: 2062/3732 cut-off events. [2024-06-28 00:58:41,197 INFO L125 PetriNetUnfolderBase]: For 156027/156027 co-relation queries the response was YES. [2024-06-28 00:58:41,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27886 conditions, 3732 events. 2062/3732 cut-off events. For 156027/156027 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 23878 event pairs, 453 based on Foata normal form. 2/3542 useless extension candidates. Maximal degree in co-relation 27722. Up to 3158 conditions per place. [2024-06-28 00:58:41,247 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 349 selfloop transitions, 66 changer transitions 0/422 dead transitions. [2024-06-28 00:58:41,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 422 transitions, 7040 flow [2024-06-28 00:58:41,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:58:41,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:58:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:58:41,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2024-06-28 00:58:41,248 INFO L175 Difference]: Start difference. First operand has 357 places, 393 transitions, 6000 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:58:41,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 422 transitions, 7040 flow [2024-06-28 00:58:42,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 422 transitions, 6847 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 00:58:42,190 INFO L231 Difference]: Finished difference. Result has 361 places, 395 transitions, 6030 flow [2024-06-28 00:58:42,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5827, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6030, PETRI_PLACES=361, PETRI_TRANSITIONS=395} [2024-06-28 00:58:42,191 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 318 predicate places. [2024-06-28 00:58:42,191 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 395 transitions, 6030 flow [2024-06-28 00:58:42,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:42,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:42,191 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 00:58:42,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 00:58:42,191 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:58:42,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:42,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2087594745, now seen corresponding path program 14 times [2024-06-28 00:58:42,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:42,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504902222] [2024-06-28 00:58:42,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:42,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:45,494 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 00:58:45,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:45,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504902222] [2024-06-28 00:58:45,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504902222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:45,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:45,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:58:45,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343942414] [2024-06-28 00:58:45,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:45,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:58:45,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:45,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:58:45,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:58:45,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:58:45,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 395 transitions, 6030 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:45,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:45,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:58:45,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:47,085 INFO L124 PetriNetUnfolderBase]: 2088/3772 cut-off events. [2024-06-28 00:58:47,085 INFO L125 PetriNetUnfolderBase]: For 165349/165349 co-relation queries the response was YES. [2024-06-28 00:58:47,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28525 conditions, 3772 events. 2088/3772 cut-off events. For 165349/165349 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 24170 event pairs, 429 based on Foata normal form. 2/3580 useless extension candidates. Maximal degree in co-relation 28359. Up to 3008 conditions per place. [2024-06-28 00:58:47,142 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 320 selfloop transitions, 101 changer transitions 0/428 dead transitions. [2024-06-28 00:58:47,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 428 transitions, 7338 flow [2024-06-28 00:58:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:58:47,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:58:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 00:58:47,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128205128205128 [2024-06-28 00:58:47,143 INFO L175 Difference]: Start difference. First operand has 361 places, 395 transitions, 6030 flow. Second operand 10 states and 161 transitions. [2024-06-28 00:58:47,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 428 transitions, 7338 flow [2024-06-28 00:58:48,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 428 transitions, 7159 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 00:58:48,047 INFO L231 Difference]: Finished difference. Result has 363 places, 399 transitions, 6226 flow [2024-06-28 00:58:48,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5851, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6226, PETRI_PLACES=363, PETRI_TRANSITIONS=399} [2024-06-28 00:58:48,047 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 320 predicate places. [2024-06-28 00:58:48,047 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 399 transitions, 6226 flow [2024-06-28 00:58:48,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:48,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:48,048 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 00:58:48,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 00:58:48,048 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:58:48,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash 956050397, now seen corresponding path program 15 times [2024-06-28 00:58:48,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:48,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904821624] [2024-06-28 00:58:48,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:48,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:50,601 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 00:58:50,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:50,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904821624] [2024-06-28 00:58:50,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904821624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:50,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:50,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:50,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166922280] [2024-06-28 00:58:50,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:50,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:50,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:50,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:50,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:50,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:58:50,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 399 transitions, 6226 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:50,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:50,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:58:50,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:52,319 INFO L124 PetriNetUnfolderBase]: 2099/3789 cut-off events. [2024-06-28 00:58:52,319 INFO L125 PetriNetUnfolderBase]: For 168738/168738 co-relation queries the response was YES. [2024-06-28 00:58:52,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28815 conditions, 3789 events. 2099/3789 cut-off events. For 168738/168738 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24267 event pairs, 459 based on Foata normal form. 2/3596 useless extension candidates. Maximal degree in co-relation 28648. Up to 3251 conditions per place. [2024-06-28 00:58:52,383 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 359 selfloop transitions, 61 changer transitions 0/427 dead transitions. [2024-06-28 00:58:52,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 427 transitions, 7254 flow [2024-06-28 00:58:52,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:58:52,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:58:52,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:58:52,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-06-28 00:58:52,391 INFO L175 Difference]: Start difference. First operand has 363 places, 399 transitions, 6226 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:58:52,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 427 transitions, 7254 flow [2024-06-28 00:58:53,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 427 transitions, 7026 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 00:58:53,430 INFO L231 Difference]: Finished difference. Result has 367 places, 401 transitions, 6195 flow [2024-06-28 00:58:53,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=5998, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6195, PETRI_PLACES=367, PETRI_TRANSITIONS=401} [2024-06-28 00:58:53,431 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 324 predicate places. [2024-06-28 00:58:53,431 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 401 transitions, 6195 flow [2024-06-28 00:58:53,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:53,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:53,431 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 00:58:53,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 00:58:53,432 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:58:53,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:53,432 INFO L85 PathProgramCache]: Analyzing trace with hash 948690811, now seen corresponding path program 18 times [2024-06-28 00:58:53,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:53,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586779746] [2024-06-28 00:58:53,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:53,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:55,846 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 00:58:55,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:55,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586779746] [2024-06-28 00:58:55,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586779746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:55,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:55,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:55,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788919245] [2024-06-28 00:58:55,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:55,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:55,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:55,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:55,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:55,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:58:55,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 401 transitions, 6195 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:55,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:55,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:58:55,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:57,281 INFO L124 PetriNetUnfolderBase]: 2119/3832 cut-off events. [2024-06-28 00:58:57,281 INFO L125 PetriNetUnfolderBase]: For 172694/172694 co-relation queries the response was YES. [2024-06-28 00:58:57,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29235 conditions, 3832 events. 2119/3832 cut-off events. For 172694/172694 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 24623 event pairs, 469 based on Foata normal form. 2/3637 useless extension candidates. Maximal degree in co-relation 29066. Up to 3312 conditions per place. [2024-06-28 00:58:57,335 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 365 selfloop transitions, 55 changer transitions 0/427 dead transitions. [2024-06-28 00:58:57,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 427 transitions, 7267 flow [2024-06-28 00:58:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:58:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:58:57,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:58:57,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017094017094017 [2024-06-28 00:58:57,336 INFO L175 Difference]: Start difference. First operand has 367 places, 401 transitions, 6195 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:58:57,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 427 transitions, 7267 flow [2024-06-28 00:58:58,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 427 transitions, 7094 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 00:58:58,394 INFO L231 Difference]: Finished difference. Result has 368 places, 402 transitions, 6184 flow [2024-06-28 00:58:58,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6022, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6184, PETRI_PLACES=368, PETRI_TRANSITIONS=402} [2024-06-28 00:58:58,394 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 325 predicate places. [2024-06-28 00:58:58,394 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 402 transitions, 6184 flow [2024-06-28 00:58:58,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:58:58,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:58,395 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 00:58:58,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 00:58:58,395 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:58:58,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:58,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2022909847, now seen corresponding path program 16 times [2024-06-28 00:58:58,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:58,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662594093] [2024-06-28 00:58:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:58,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:01,228 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 00:59:01,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:01,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662594093] [2024-06-28 00:59:01,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662594093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:01,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:01,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:59:01,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145757187] [2024-06-28 00:59:01,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:01,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:59:01,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:59:01,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:59:01,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:59:01,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 402 transitions, 6184 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:01,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:01,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:59:01,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:02,751 INFO L124 PetriNetUnfolderBase]: 2130/3849 cut-off events. [2024-06-28 00:59:02,751 INFO L125 PetriNetUnfolderBase]: For 175630/175630 co-relation queries the response was YES. [2024-06-28 00:59:02,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29334 conditions, 3849 events. 2130/3849 cut-off events. For 175630/175630 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 24725 event pairs, 433 based on Foata normal form. 2/3652 useless extension candidates. Maximal degree in co-relation 29164. Up to 3110 conditions per place. [2024-06-28 00:59:02,811 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 326 selfloop transitions, 98 changer transitions 0/431 dead transitions. [2024-06-28 00:59:02,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 431 transitions, 7222 flow [2024-06-28 00:59:02,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 00:59:02,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40512820512820513 [2024-06-28 00:59:02,813 INFO L175 Difference]: Start difference. First operand has 368 places, 402 transitions, 6184 flow. Second operand 10 states and 158 transitions. [2024-06-28 00:59:02,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 431 transitions, 7222 flow [2024-06-28 00:59:03,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 431 transitions, 7086 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 00:59:03,858 INFO L231 Difference]: Finished difference. Result has 371 places, 404 transitions, 6315 flow [2024-06-28 00:59:03,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6048, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6315, PETRI_PLACES=371, PETRI_TRANSITIONS=404} [2024-06-28 00:59:03,859 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 328 predicate places. [2024-06-28 00:59:03,859 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 404 transitions, 6315 flow [2024-06-28 00:59:03,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:03,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:03,860 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 00:59:03,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 00:59:03,860 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:59:03,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:03,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2087863515, now seen corresponding path program 17 times [2024-06-28 00:59:03,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:03,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055235061] [2024-06-28 00:59:03,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:03,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:06,564 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 00:59:06,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:06,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055235061] [2024-06-28 00:59:06,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055235061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:06,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:06,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:59:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950778668] [2024-06-28 00:59:06,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:06,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:59:06,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:06,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:59:06,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:59:06,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:59:06,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 404 transitions, 6315 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:06,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:06,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:59:06,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:08,122 INFO L124 PetriNetUnfolderBase]: 2126/3843 cut-off events. [2024-06-28 00:59:08,122 INFO L125 PetriNetUnfolderBase]: For 167805/167805 co-relation queries the response was YES. [2024-06-28 00:59:08,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29103 conditions, 3843 events. 2126/3843 cut-off events. For 167805/167805 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 24702 event pairs, 436 based on Foata normal form. 2/3646 useless extension candidates. Maximal degree in co-relation 28932. Up to 3127 conditions per place. [2024-06-28 00:59:08,181 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 327 selfloop transitions, 95 changer transitions 0/429 dead transitions. [2024-06-28 00:59:08,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 429 transitions, 7279 flow [2024-06-28 00:59:08,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 00:59:08,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39487179487179486 [2024-06-28 00:59:08,183 INFO L175 Difference]: Start difference. First operand has 371 places, 404 transitions, 6315 flow. Second operand 10 states and 154 transitions. [2024-06-28 00:59:08,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 429 transitions, 7279 flow [2024-06-28 00:59:09,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 429 transitions, 6988 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-28 00:59:09,285 INFO L231 Difference]: Finished difference. Result has 373 places, 404 transitions, 6219 flow [2024-06-28 00:59:09,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6024, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6219, PETRI_PLACES=373, PETRI_TRANSITIONS=404} [2024-06-28 00:59:09,286 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 330 predicate places. [2024-06-28 00:59:09,286 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 404 transitions, 6219 flow [2024-06-28 00:59:09,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:09,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:09,286 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 00:59:09,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 00:59:09,286 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:59:09,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:09,287 INFO L85 PathProgramCache]: Analyzing trace with hash -928885459, now seen corresponding path program 18 times [2024-06-28 00:59:09,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:09,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471317978] [2024-06-28 00:59:09,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:09,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:12,130 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 00:59:12,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:12,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471317978] [2024-06-28 00:59:12,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471317978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:12,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:12,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:59:12,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572784743] [2024-06-28 00:59:12,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:12,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:59:12,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:12,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:59:12,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:59:12,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:59:12,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 404 transitions, 6219 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:59:12,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:12,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:59:12,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:13,696 INFO L124 PetriNetUnfolderBase]: 2169/3907 cut-off events. [2024-06-28 00:59:13,697 INFO L125 PetriNetUnfolderBase]: For 189008/189008 co-relation queries the response was YES. [2024-06-28 00:59:13,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30054 conditions, 3907 events. 2169/3907 cut-off events. For 189008/189008 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 25118 event pairs, 432 based on Foata normal form. 2/3706 useless extension candidates. Maximal degree in co-relation 29882. Up to 2249 conditions per place. [2024-06-28 00:59:13,755 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 273 selfloop transitions, 162 changer transitions 0/442 dead transitions. [2024-06-28 00:59:13,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 442 transitions, 8033 flow [2024-06-28 00:59:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 00:59:13,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2024-06-28 00:59:13,757 INFO L175 Difference]: Start difference. First operand has 373 places, 404 transitions, 6219 flow. Second operand 10 states and 168 transitions. [2024-06-28 00:59:13,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 442 transitions, 8033 flow [2024-06-28 00:59:14,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 442 transitions, 7831 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:59:14,988 INFO L231 Difference]: Finished difference. Result has 374 places, 411 transitions, 6624 flow [2024-06-28 00:59:14,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6017, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6624, PETRI_PLACES=374, PETRI_TRANSITIONS=411} [2024-06-28 00:59:14,988 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 331 predicate places. [2024-06-28 00:59:14,988 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 411 transitions, 6624 flow [2024-06-28 00:59:14,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:59:14,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:14,990 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 00:59:14,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 00:59:14,991 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:59:14,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash 948685231, now seen corresponding path program 19 times [2024-06-28 00:59:14,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:14,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048641672] [2024-06-28 00:59:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:14,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:17,248 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 00:59:17,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:17,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048641672] [2024-06-28 00:59:17,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048641672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:17,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:17,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:59:17,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814020376] [2024-06-28 00:59:17,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:17,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:59:17,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:17,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:59:17,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:59:17,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:59:17,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 411 transitions, 6624 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:17,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:17,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:59:17,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:18,817 INFO L124 PetriNetUnfolderBase]: 2185/3936 cut-off events. [2024-06-28 00:59:18,817 INFO L125 PetriNetUnfolderBase]: For 197366/197366 co-relation queries the response was YES. [2024-06-28 00:59:18,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30808 conditions, 3936 events. 2185/3936 cut-off events. For 197366/197366 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 25358 event pairs, 475 based on Foata normal form. 2/3735 useless extension candidates. Maximal degree in co-relation 30635. Up to 3414 conditions per place. [2024-06-28 00:59:18,885 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 376 selfloop transitions, 56 changer transitions 0/439 dead transitions. [2024-06-28 00:59:18,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 439 transitions, 7768 flow [2024-06-28 00:59:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:59:18,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:59:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:59:18,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017094017094017 [2024-06-28 00:59:18,887 INFO L175 Difference]: Start difference. First operand has 374 places, 411 transitions, 6624 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:59:18,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 439 transitions, 7768 flow [2024-06-28 00:59:20,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 439 transitions, 7404 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-28 00:59:20,104 INFO L231 Difference]: Finished difference. Result has 379 places, 415 transitions, 6526 flow [2024-06-28 00:59:20,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6260, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6526, PETRI_PLACES=379, PETRI_TRANSITIONS=415} [2024-06-28 00:59:20,105 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 336 predicate places. [2024-06-28 00:59:20,105 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 415 transitions, 6526 flow [2024-06-28 00:59:20,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:20,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:20,106 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 00:59:20,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 00:59:20,106 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:59:20,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:20,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1214936171, now seen corresponding path program 3 times [2024-06-28 00:59:20,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:20,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931306510] [2024-06-28 00:59:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:20,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:23,284 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 00:59:23,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:23,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931306510] [2024-06-28 00:59:23,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931306510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:23,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:23,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:59:23,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147931892] [2024-06-28 00:59:23,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:23,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:59:23,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:23,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:59:23,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:59:23,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:59:23,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 415 transitions, 6526 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:59:23,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:23,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:59:23,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:24,974 INFO L124 PetriNetUnfolderBase]: 2217/4001 cut-off events. [2024-06-28 00:59:24,975 INFO L125 PetriNetUnfolderBase]: For 209025/209025 co-relation queries the response was YES. [2024-06-28 00:59:25,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31238 conditions, 4001 events. 2217/4001 cut-off events. For 209025/209025 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 25994 event pairs, 584 based on Foata normal form. 4/3801 useless extension candidates. Maximal degree in co-relation 31062. Up to 3546 conditions per place. [2024-06-28 00:59:25,028 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 401 selfloop transitions, 37 changer transitions 0/445 dead transitions. [2024-06-28 00:59:25,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 445 transitions, 7682 flow [2024-06-28 00:59:25,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:59:25,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:59:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-28 00:59:25,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37995337995337997 [2024-06-28 00:59:25,030 INFO L175 Difference]: Start difference. First operand has 379 places, 415 transitions, 6526 flow. Second operand 11 states and 163 transitions. [2024-06-28 00:59:25,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 445 transitions, 7682 flow [2024-06-28 00:59:26,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 445 transitions, 7452 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-28 00:59:26,108 INFO L231 Difference]: Finished difference. Result has 384 places, 417 transitions, 6475 flow [2024-06-28 00:59:26,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6296, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6475, PETRI_PLACES=384, PETRI_TRANSITIONS=417} [2024-06-28 00:59:26,109 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-28 00:59:26,109 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 417 transitions, 6475 flow [2024-06-28 00:59:26,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:59:26,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:26,110 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 00:59:26,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 00:59:26,110 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:59:26,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:26,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2022642441, now seen corresponding path program 20 times [2024-06-28 00:59:26,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:26,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657387218] [2024-06-28 00:59:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:26,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:28,483 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 00:59:28,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:28,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657387218] [2024-06-28 00:59:28,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657387218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:28,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:28,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:59:28,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355493099] [2024-06-28 00:59:28,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:28,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:59:28,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:28,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:59:28,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:59:28,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:59:28,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 417 transitions, 6475 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:28,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:28,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:59:28,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:30,055 INFO L124 PetriNetUnfolderBase]: 2221/4008 cut-off events. [2024-06-28 00:59:30,056 INFO L125 PetriNetUnfolderBase]: For 193899/193899 co-relation queries the response was YES. [2024-06-28 00:59:30,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30899 conditions, 4008 events. 2221/4008 cut-off events. For 193899/193899 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 25948 event pairs, 455 based on Foata normal form. 2/3803 useless extension candidates. Maximal degree in co-relation 30722. Up to 3286 conditions per place. [2024-06-28 00:59:30,110 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 345 selfloop transitions, 92 changer transitions 0/444 dead transitions. [2024-06-28 00:59:30,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 444 transitions, 7597 flow [2024-06-28 00:59:30,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:59:30,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:59:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 00:59:30,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2024-06-28 00:59:30,134 INFO L175 Difference]: Start difference. First operand has 384 places, 417 transitions, 6475 flow. Second operand 9 states and 144 transitions. [2024-06-28 00:59:30,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 444 transitions, 7597 flow [2024-06-28 00:59:31,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 444 transitions, 7434 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-28 00:59:31,341 INFO L231 Difference]: Finished difference. Result has 384 places, 418 transitions, 6552 flow [2024-06-28 00:59:31,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6312, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6552, PETRI_PLACES=384, PETRI_TRANSITIONS=418} [2024-06-28 00:59:31,341 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-28 00:59:31,342 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 418 transitions, 6552 flow [2024-06-28 00:59:31,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:31,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:31,342 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 00:59:31,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 00:59:31,342 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:59:31,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:31,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2032185481, now seen corresponding path program 4 times [2024-06-28 00:59:31,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:31,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032578902] [2024-06-28 00:59:31,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:31,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:34,707 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 00:59:34,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:34,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032578902] [2024-06-28 00:59:34,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032578902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:34,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:34,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:59:34,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414930535] [2024-06-28 00:59:34,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:34,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:59:34,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:59:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:59:34,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:59:34,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 418 transitions, 6552 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:59:34,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:34,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:59:34,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:36,401 INFO L124 PetriNetUnfolderBase]: 2253/4073 cut-off events. [2024-06-28 00:59:36,401 INFO L125 PetriNetUnfolderBase]: For 208053/208053 co-relation queries the response was YES. [2024-06-28 00:59:36,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31428 conditions, 4073 events. 2253/4073 cut-off events. For 208053/208053 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 26623 event pairs, 581 based on Foata normal form. 4/3869 useless extension candidates. Maximal degree in co-relation 31250. Up to 3555 conditions per place. [2024-06-28 00:59:36,463 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 391 selfloop transitions, 50 changer transitions 0/448 dead transitions. [2024-06-28 00:59:36,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 448 transitions, 7718 flow [2024-06-28 00:59:36,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:59:36,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:59:36,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 00:59:36,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-28 00:59:36,465 INFO L175 Difference]: Start difference. First operand has 384 places, 418 transitions, 6552 flow. Second operand 11 states and 164 transitions. [2024-06-28 00:59:36,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 448 transitions, 7718 flow [2024-06-28 00:59:37,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 448 transitions, 7506 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 00:59:37,788 INFO L231 Difference]: Finished difference. Result has 388 places, 420 transitions, 6549 flow [2024-06-28 00:59:37,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6340, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6549, PETRI_PLACES=388, PETRI_TRANSITIONS=420} [2024-06-28 00:59:37,788 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 345 predicate places. [2024-06-28 00:59:37,789 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 420 transitions, 6549 flow [2024-06-28 00:59:37,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:59:37,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:37,789 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 00:59:37,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 00:59:37,789 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:59:37,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:37,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1958358219, now seen corresponding path program 19 times [2024-06-28 00:59:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:37,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073047129] [2024-06-28 00:59:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:37,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:40,536 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 00:59:40,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073047129] [2024-06-28 00:59:40,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073047129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:40,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:40,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:59:40,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709668406] [2024-06-28 00:59:40,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:40,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:59:40,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:40,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:59:40,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:59:40,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:59:40,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 420 transitions, 6549 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:40,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:40,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:59:40,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:42,069 INFO L124 PetriNetUnfolderBase]: 2249/4060 cut-off events. [2024-06-28 00:59:42,070 INFO L125 PetriNetUnfolderBase]: For 190189/190189 co-relation queries the response was YES. [2024-06-28 00:59:42,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30902 conditions, 4060 events. 2249/4060 cut-off events. For 190189/190189 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 26351 event pairs, 436 based on Foata normal form. 2/3852 useless extension candidates. Maximal degree in co-relation 30723. Up to 3062 conditions per place. [2024-06-28 00:59:42,129 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 294 selfloop transitions, 145 changer transitions 0/446 dead transitions. [2024-06-28 00:59:42,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 446 transitions, 7553 flow [2024-06-28 00:59:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:59:42,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2024-06-28 00:59:42,130 INFO L175 Difference]: Start difference. First operand has 388 places, 420 transitions, 6549 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:59:42,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 446 transitions, 7553 flow [2024-06-28 00:59:43,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 446 transitions, 7312 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-06-28 00:59:43,264 INFO L231 Difference]: Finished difference. Result has 389 places, 420 transitions, 6603 flow [2024-06-28 00:59:43,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6308, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6603, PETRI_PLACES=389, PETRI_TRANSITIONS=420} [2024-06-28 00:59:43,265 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 346 predicate places. [2024-06-28 00:59:43,265 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 420 transitions, 6603 flow [2024-06-28 00:59:43,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:43,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:43,265 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 00:59:43,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 00:59:43,265 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:59:43,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:43,266 INFO L85 PathProgramCache]: Analyzing trace with hash -241460117, now seen corresponding path program 5 times [2024-06-28 00:59:43,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:43,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141117897] [2024-06-28 00:59:43,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:43,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:47,223 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 00:59:47,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:47,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141117897] [2024-06-28 00:59:47,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141117897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:47,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:47,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:59:47,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861994927] [2024-06-28 00:59:47,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:47,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:59:47,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:47,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:59:47,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:59:47,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:59:47,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 420 transitions, 6603 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:59:47,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:47,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:59:47,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:48,912 INFO L124 PetriNetUnfolderBase]: 2281/4125 cut-off events. [2024-06-28 00:59:48,912 INFO L125 PetriNetUnfolderBase]: For 203772/203772 co-relation queries the response was YES. [2024-06-28 00:59:48,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31466 conditions, 4125 events. 2281/4125 cut-off events. For 203772/203772 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 27044 event pairs, 578 based on Foata normal form. 4/3919 useless extension candidates. Maximal degree in co-relation 31286. Up to 3537 conditions per place. [2024-06-28 00:59:48,968 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 378 selfloop transitions, 65 changer transitions 0/450 dead transitions. [2024-06-28 00:59:48,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 450 transitions, 7777 flow [2024-06-28 00:59:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:59:48,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:59:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-28 00:59:48,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 00:59:48,970 INFO L175 Difference]: Start difference. First operand has 389 places, 420 transitions, 6603 flow. Second operand 11 states and 165 transitions. [2024-06-28 00:59:48,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 450 transitions, 7777 flow [2024-06-28 00:59:50,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 450 transitions, 7482 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 00:59:50,268 INFO L231 Difference]: Finished difference. Result has 391 places, 422 transitions, 6551 flow [2024-06-28 00:59:50,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6308, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6551, PETRI_PLACES=391, PETRI_TRANSITIONS=422} [2024-06-28 00:59:50,268 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 348 predicate places. [2024-06-28 00:59:50,269 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 422 transitions, 6551 flow [2024-06-28 00:59:50,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 00:59:50,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:50,269 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 00:59:50,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 00:59:50,269 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:59:50,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:50,269 INFO L85 PathProgramCache]: Analyzing trace with hash 149860553, now seen corresponding path program 20 times [2024-06-28 00:59:50,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:50,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11095447] [2024-06-28 00:59:50,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:50,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:52,932 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 00:59:52,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:52,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11095447] [2024-06-28 00:59:52,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11095447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:52,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:52,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:59:52,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540907928] [2024-06-28 00:59:52,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:52,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:59:52,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:52,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:59:52,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:59:53,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:59:53,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 422 transitions, 6551 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:53,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:53,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:59:53,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:54,600 INFO L124 PetriNetUnfolderBase]: 2277/4112 cut-off events. [2024-06-28 00:59:54,600 INFO L125 PetriNetUnfolderBase]: For 188790/188790 co-relation queries the response was YES. [2024-06-28 00:59:54,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30997 conditions, 4112 events. 2277/4112 cut-off events. For 188790/188790 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 26804 event pairs, 521 based on Foata normal form. 2/3902 useless extension candidates. Maximal degree in co-relation 30816. Up to 3578 conditions per place. [2024-06-28 00:59:54,668 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 381 selfloop transitions, 58 changer transitions 0/446 dead transitions. [2024-06-28 00:59:54,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 446 transitions, 7543 flow [2024-06-28 00:59:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:54,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 00:59:54,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871794871794872 [2024-06-28 00:59:54,669 INFO L175 Difference]: Start difference. First operand has 391 places, 422 transitions, 6551 flow. Second operand 10 states and 151 transitions. [2024-06-28 00:59:54,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 446 transitions, 7543 flow [2024-06-28 00:59:56,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 446 transitions, 7268 flow, removed 74 selfloop flow, removed 9 redundant places. [2024-06-28 00:59:56,037 INFO L231 Difference]: Finished difference. Result has 392 places, 422 transitions, 6397 flow [2024-06-28 00:59:56,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6276, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6397, PETRI_PLACES=392, PETRI_TRANSITIONS=422} [2024-06-28 00:59:56,038 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 349 predicate places. [2024-06-28 00:59:56,038 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 422 transitions, 6397 flow [2024-06-28 00:59:56,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:56,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:56,038 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 00:59:56,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 00:59:56,038 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 00:59:56,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:56,039 INFO L85 PathProgramCache]: Analyzing trace with hash 129425929, now seen corresponding path program 21 times [2024-06-28 00:59:56,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:56,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310782413] [2024-06-28 00:59:56,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:56,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:58,398 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 00:59:58,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:58,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310782413] [2024-06-28 00:59:58,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310782413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:58,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:58,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:59:58,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017889753] [2024-06-28 00:59:58,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:58,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:59:58,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:58,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:59:58,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:59:58,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 00:59:58,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 422 transitions, 6397 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:58,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:58,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 00:59:58,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:59,979 INFO L124 PetriNetUnfolderBase]: 2269/4100 cut-off events. [2024-06-28 00:59:59,980 INFO L125 PetriNetUnfolderBase]: For 176382/176382 co-relation queries the response was YES. [2024-06-28 01:00:00,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30021 conditions, 4100 events. 2269/4100 cut-off events. For 176382/176382 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 26694 event pairs, 433 based on Foata normal form. 4/3892 useless extension candidates. Maximal degree in co-relation 29839. Up to 2447 conditions per place. [2024-06-28 01:00:00,038 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 255 selfloop transitions, 188 changer transitions 0/450 dead transitions. [2024-06-28 01:00:00,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 450 transitions, 7609 flow [2024-06-28 01:00:00,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:00:00,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:00:00,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:00:00,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4205128205128205 [2024-06-28 01:00:00,039 INFO L175 Difference]: Start difference. First operand has 392 places, 422 transitions, 6397 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:00:00,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 450 transitions, 7609 flow [2024-06-28 01:00:01,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 450 transitions, 7418 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 01:00:01,110 INFO L231 Difference]: Finished difference. Result has 393 places, 422 transitions, 6589 flow [2024-06-28 01:00:01,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6206, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6589, PETRI_PLACES=393, PETRI_TRANSITIONS=422} [2024-06-28 01:00:01,111 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 350 predicate places. [2024-06-28 01:00:01,111 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 422 transitions, 6589 flow [2024-06-28 01:00:01,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:01,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:01,111 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 01:00:01,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 01:00:01,112 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:01,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:01,112 INFO L85 PathProgramCache]: Analyzing trace with hash 142324843, now seen corresponding path program 6 times [2024-06-28 01:00:01,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:01,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537660873] [2024-06-28 01:00:01,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:01,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:03,995 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 01:00:03,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:03,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537660873] [2024-06-28 01:00:03,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537660873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:03,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:03,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:00:03,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319867156] [2024-06-28 01:00:03,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:03,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:00:03,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:03,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:00:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:00:04,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:00:04,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 422 transitions, 6589 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 01:00:04,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:04,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:00:04,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:05,619 INFO L124 PetriNetUnfolderBase]: 2301/4177 cut-off events. [2024-06-28 01:00:05,619 INFO L125 PetriNetUnfolderBase]: For 183994/183994 co-relation queries the response was YES. [2024-06-28 01:00:05,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31025 conditions, 4177 events. 2301/4177 cut-off events. For 183994/183994 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 27464 event pairs, 901 based on Foata normal form. 4/3969 useless extension candidates. Maximal degree in co-relation 30842. Up to 3773 conditions per place. [2024-06-28 01:00:05,685 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 420 selfloop transitions, 22 changer transitions 0/449 dead transitions. [2024-06-28 01:00:05,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 449 transitions, 7747 flow [2024-06-28 01:00:05,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:05,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 01:00:05,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706293706293706 [2024-06-28 01:00:05,687 INFO L175 Difference]: Start difference. First operand has 393 places, 422 transitions, 6589 flow. Second operand 11 states and 159 transitions. [2024-06-28 01:00:05,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 449 transitions, 7747 flow [2024-06-28 01:00:07,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 449 transitions, 7426 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 01:00:07,098 INFO L231 Difference]: Finished difference. Result has 396 places, 424 transitions, 6429 flow [2024-06-28 01:00:07,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6268, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6429, PETRI_PLACES=396, PETRI_TRANSITIONS=424} [2024-06-28 01:00:07,098 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 353 predicate places. [2024-06-28 01:00:07,099 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 424 transitions, 6429 flow [2024-06-28 01:00:07,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 01:00:07,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:07,099 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 01:00:07,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 01:00:07,099 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:07,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:07,100 INFO L85 PathProgramCache]: Analyzing trace with hash 142770313, now seen corresponding path program 7 times [2024-06-28 01:00:07,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:07,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893375811] [2024-06-28 01:00:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:07,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:09,949 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 01:00:09,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:09,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893375811] [2024-06-28 01:00:09,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893375811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:09,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:09,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:00:09,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700915759] [2024-06-28 01:00:09,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:09,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:00:09,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:09,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:00:09,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:00:10,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:00:10,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 424 transitions, 6429 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 01:00:10,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:10,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:00:10,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:11,676 INFO L124 PetriNetUnfolderBase]: 2352/4268 cut-off events. [2024-06-28 01:00:11,676 INFO L125 PetriNetUnfolderBase]: For 207882/207882 co-relation queries the response was YES. [2024-06-28 01:00:11,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31961 conditions, 4268 events. 2352/4268 cut-off events. For 207882/207882 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 28170 event pairs, 894 based on Foata normal form. 4/4069 useless extension candidates. Maximal degree in co-relation 31777. Up to 3736 conditions per place. [2024-06-28 01:00:11,751 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 423 selfloop transitions, 27 changer transitions 0/457 dead transitions. [2024-06-28 01:00:11,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 457 transitions, 7957 flow [2024-06-28 01:00:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 01:00:11,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-28 01:00:11,752 INFO L175 Difference]: Start difference. First operand has 396 places, 424 transitions, 6429 flow. Second operand 11 states and 164 transitions. [2024-06-28 01:00:11,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 457 transitions, 7957 flow [2024-06-28 01:00:13,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 457 transitions, 7812 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-28 01:00:13,274 INFO L231 Difference]: Finished difference. Result has 398 places, 428 transitions, 6571 flow [2024-06-28 01:00:13,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6284, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6571, PETRI_PLACES=398, PETRI_TRANSITIONS=428} [2024-06-28 01:00:13,274 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 355 predicate places. [2024-06-28 01:00:13,274 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 428 transitions, 6571 flow [2024-06-28 01:00:13,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 01:00:13,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:13,275 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 01:00:13,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 01:00:13,275 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:13,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:13,276 INFO L85 PathProgramCache]: Analyzing trace with hash 129437833, now seen corresponding path program 8 times [2024-06-28 01:00:13,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:13,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826905259] [2024-06-28 01:00:13,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:13,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:13,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:15,952 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 01:00:15,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:15,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826905259] [2024-06-28 01:00:15,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826905259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:15,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:15,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:00:15,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73545192] [2024-06-28 01:00:15,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:15,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:00:15,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:15,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:00:15,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:00:16,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:00:16,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 428 transitions, 6571 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 01:00:16,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:16,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:00:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:17,836 INFO L124 PetriNetUnfolderBase]: 2346/4258 cut-off events. [2024-06-28 01:00:17,836 INFO L125 PetriNetUnfolderBase]: For 188429/188429 co-relation queries the response was YES. [2024-06-28 01:00:17,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31255 conditions, 4258 events. 2346/4258 cut-off events. For 188429/188429 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 28066 event pairs, 926 based on Foata normal form. 4/4048 useless extension candidates. Maximal degree in co-relation 31070. Up to 3867 conditions per place. [2024-06-28 01:00:17,914 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 426 selfloop transitions, 19 changer transitions 0/452 dead transitions. [2024-06-28 01:00:17,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 452 transitions, 7621 flow [2024-06-28 01:00:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:17,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-28 01:00:17,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 01:00:17,916 INFO L175 Difference]: Start difference. First operand has 398 places, 428 transitions, 6571 flow. Second operand 11 states and 156 transitions. [2024-06-28 01:00:17,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 452 transitions, 7621 flow [2024-06-28 01:00:19,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 452 transitions, 7385 flow, removed 105 selfloop flow, removed 7 redundant places. [2024-06-28 01:00:19,315 INFO L231 Difference]: Finished difference. Result has 402 places, 428 transitions, 6378 flow [2024-06-28 01:00:19,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6335, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6378, PETRI_PLACES=402, PETRI_TRANSITIONS=428} [2024-06-28 01:00:19,316 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 359 predicate places. [2024-06-28 01:00:19,316 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 428 transitions, 6378 flow [2024-06-28 01:00:19,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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 01:00:19,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:19,316 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 01:00:19,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 01:00:19,316 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:19,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:19,317 INFO L85 PathProgramCache]: Analyzing trace with hash -129125897, now seen corresponding path program 1 times [2024-06-28 01:00:19,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:19,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417252248] [2024-06-28 01:00:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:19,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:21,728 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 01:00:21,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:21,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417252248] [2024-06-28 01:00:21,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417252248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:21,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:21,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:00:21,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436715730] [2024-06-28 01:00:21,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:21,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:00:21,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:21,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:00:21,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:00:21,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:00:21,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 428 transitions, 6378 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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 01:00:21,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:21,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:00:21,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:23,514 INFO L124 PetriNetUnfolderBase]: 2362/4283 cut-off events. [2024-06-28 01:00:23,514 INFO L125 PetriNetUnfolderBase]: For 171588/171588 co-relation queries the response was YES. [2024-06-28 01:00:23,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30805 conditions, 4283 events. 2362/4283 cut-off events. For 171588/171588 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 28195 event pairs, 643 based on Foata normal form. 2/4067 useless extension candidates. Maximal degree in co-relation 30618. Up to 3742 conditions per place. [2024-06-28 01:00:23,577 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 408 selfloop transitions, 50 changer transitions 0/465 dead transitions. [2024-06-28 01:00:23,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 465 transitions, 7588 flow [2024-06-28 01:00:23,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:23,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:00:23,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3986013986013986 [2024-06-28 01:00:23,579 INFO L175 Difference]: Start difference. First operand has 402 places, 428 transitions, 6378 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:00:23,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 465 transitions, 7588 flow [2024-06-28 01:00:24,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 465 transitions, 7533 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 01:00:24,947 INFO L231 Difference]: Finished difference. Result has 403 places, 430 transitions, 6520 flow [2024-06-28 01:00:24,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6323, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6520, PETRI_PLACES=403, PETRI_TRANSITIONS=430} [2024-06-28 01:00:24,948 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 360 predicate places. [2024-06-28 01:00:24,948 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 430 transitions, 6520 flow [2024-06-28 01:00:24,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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 01:00:24,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:24,949 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 01:00:24,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 01:00:24,949 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:24,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash -684241255, now seen corresponding path program 2 times [2024-06-28 01:00:24,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:24,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536430861] [2024-06-28 01:00:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:24,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:27,611 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 01:00:27,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:27,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536430861] [2024-06-28 01:00:27,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536430861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:27,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:27,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:27,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646898440] [2024-06-28 01:00:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:27,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:27,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:27,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:27,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:27,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:00:27,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 430 transitions, 6520 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:27,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:27,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:00:27,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:29,282 INFO L124 PetriNetUnfolderBase]: 2382/4327 cut-off events. [2024-06-28 01:00:29,282 INFO L125 PetriNetUnfolderBase]: For 177272/177272 co-relation queries the response was YES. [2024-06-28 01:00:29,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31387 conditions, 4327 events. 2382/4327 cut-off events. For 177272/177272 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 28625 event pairs, 704 based on Foata normal form. 2/4109 useless extension candidates. Maximal degree in co-relation 31199. Up to 3854 conditions per place. [2024-06-28 01:00:29,345 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 406 selfloop transitions, 50 changer transitions 0/463 dead transitions. [2024-06-28 01:00:29,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 463 transitions, 7682 flow [2024-06-28 01:00:29,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 01:00:29,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38927738927738925 [2024-06-28 01:00:29,346 INFO L175 Difference]: Start difference. First operand has 403 places, 430 transitions, 6520 flow. Second operand 11 states and 167 transitions. [2024-06-28 01:00:29,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 463 transitions, 7682 flow [2024-06-28 01:00:30,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 463 transitions, 7505 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 01:00:30,555 INFO L231 Difference]: Finished difference. Result has 405 places, 431 transitions, 6479 flow [2024-06-28 01:00:30,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6343, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6479, PETRI_PLACES=405, PETRI_TRANSITIONS=431} [2024-06-28 01:00:30,555 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 362 predicate places. [2024-06-28 01:00:30,555 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 431 transitions, 6479 flow [2024-06-28 01:00:30,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:30,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:30,556 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 01:00:30,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 01:00:30,556 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:30,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:30,556 INFO L85 PathProgramCache]: Analyzing trace with hash -645673225, now seen corresponding path program 3 times [2024-06-28 01:00:30,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:30,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052570905] [2024-06-28 01:00:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:30,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:33,328 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 01:00:33,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:33,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052570905] [2024-06-28 01:00:33,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052570905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:33,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:33,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:33,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219836927] [2024-06-28 01:00:33,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:33,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:33,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:33,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:33,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:33,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:00:33,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 431 transitions, 6479 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:33,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:33,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:00:33,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:35,156 INFO L124 PetriNetUnfolderBase]: 2398/4354 cut-off events. [2024-06-28 01:00:35,157 INFO L125 PetriNetUnfolderBase]: For 180865/180865 co-relation queries the response was YES. [2024-06-28 01:00:35,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31560 conditions, 4354 events. 2398/4354 cut-off events. For 180865/180865 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 28822 event pairs, 709 based on Foata normal form. 2/4136 useless extension candidates. Maximal degree in co-relation 31371. Up to 3865 conditions per place. [2024-06-28 01:00:35,222 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 409 selfloop transitions, 49 changer transitions 0/465 dead transitions. [2024-06-28 01:00:35,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 465 transitions, 7683 flow [2024-06-28 01:00:35,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-28 01:00:35,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2024-06-28 01:00:35,224 INFO L175 Difference]: Start difference. First operand has 405 places, 431 transitions, 6479 flow. Second operand 11 states and 168 transitions. [2024-06-28 01:00:35,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 465 transitions, 7683 flow [2024-06-28 01:00:36,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 465 transitions, 7567 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 01:00:36,788 INFO L231 Difference]: Finished difference. Result has 407 places, 433 transitions, 6563 flow [2024-06-28 01:00:36,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6363, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6563, PETRI_PLACES=407, PETRI_TRANSITIONS=433} [2024-06-28 01:00:36,789 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 364 predicate places. [2024-06-28 01:00:36,789 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 433 transitions, 6563 flow [2024-06-28 01:00:36,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:36,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:36,789 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 01:00:36,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 01:00:36,789 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:36,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:36,790 INFO L85 PathProgramCache]: Analyzing trace with hash -652246465, now seen corresponding path program 4 times [2024-06-28 01:00:36,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:36,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794853984] [2024-06-28 01:00:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:36,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:39,214 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 01:00:39,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:39,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794853984] [2024-06-28 01:00:39,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794853984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:39,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:39,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:00:39,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360997671] [2024-06-28 01:00:39,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:39,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:00:39,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:39,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:00:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:00:39,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:00:39,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 433 transitions, 6563 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:39,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:39,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:00:39,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:40,970 INFO L124 PetriNetUnfolderBase]: 2430/4437 cut-off events. [2024-06-28 01:00:40,970 INFO L125 PetriNetUnfolderBase]: For 188435/188435 co-relation queries the response was YES. [2024-06-28 01:00:41,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32189 conditions, 4437 events. 2430/4437 cut-off events. For 188435/188435 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 29623 event pairs, 703 based on Foata normal form. 2/4210 useless extension candidates. Maximal degree in co-relation 31999. Up to 3849 conditions per place. [2024-06-28 01:00:41,041 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 416 selfloop transitions, 50 changer transitions 0/473 dead transitions. [2024-06-28 01:00:41,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 473 transitions, 7889 flow [2024-06-28 01:00:41,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:41,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:00:41,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3986013986013986 [2024-06-28 01:00:41,043 INFO L175 Difference]: Start difference. First operand has 407 places, 433 transitions, 6563 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:00:41,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 473 transitions, 7889 flow [2024-06-28 01:00:42,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 473 transitions, 7707 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-28 01:00:42,567 INFO L231 Difference]: Finished difference. Result has 410 places, 437 transitions, 6631 flow [2024-06-28 01:00:42,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6381, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6631, PETRI_PLACES=410, PETRI_TRANSITIONS=437} [2024-06-28 01:00:42,568 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 367 predicate places. [2024-06-28 01:00:42,568 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 437 transitions, 6631 flow [2024-06-28 01:00:42,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:42,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:42,569 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 01:00:42,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 01:00:42,569 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:42,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2038947911, now seen corresponding path program 5 times [2024-06-28 01:00:42,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:42,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074638123] [2024-06-28 01:00:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:42,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:44,705 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 01:00:44,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:44,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074638123] [2024-06-28 01:00:44,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074638123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:44,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:44,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:00:44,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394338377] [2024-06-28 01:00:44,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:44,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:00:44,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:44,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:00:44,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:00:44,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:00:44,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 437 transitions, 6631 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:44,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:44,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:00:44,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:46,523 INFO L124 PetriNetUnfolderBase]: 2454/4476 cut-off events. [2024-06-28 01:00:46,523 INFO L125 PetriNetUnfolderBase]: For 192041/192041 co-relation queries the response was YES. [2024-06-28 01:00:46,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32525 conditions, 4476 events. 2454/4476 cut-off events. For 192041/192041 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 29914 event pairs, 584 based on Foata normal form. 2/4250 useless extension candidates. Maximal degree in co-relation 32333. Up to 3851 conditions per place. [2024-06-28 01:00:46,597 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 410 selfloop transitions, 59 changer transitions 0/476 dead transitions. [2024-06-28 01:00:46,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 476 transitions, 7889 flow [2024-06-28 01:00:46,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:46,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:00:46,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3986013986013986 [2024-06-28 01:00:46,599 INFO L175 Difference]: Start difference. First operand has 410 places, 437 transitions, 6631 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:00:46,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 476 transitions, 7889 flow [2024-06-28 01:00:48,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 476 transitions, 7715 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-28 01:00:48,255 INFO L231 Difference]: Finished difference. Result has 413 places, 441 transitions, 6698 flow [2024-06-28 01:00:48,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6457, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6698, PETRI_PLACES=413, PETRI_TRANSITIONS=441} [2024-06-28 01:00:48,256 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 370 predicate places. [2024-06-28 01:00:48,256 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 441 transitions, 6698 flow [2024-06-28 01:00:48,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:48,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:48,256 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 01:00:48,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 01:00:48,256 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:48,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:48,257 INFO L85 PathProgramCache]: Analyzing trace with hash 67217677, now seen corresponding path program 1 times [2024-06-28 01:00:48,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:48,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001834406] [2024-06-28 01:00:48,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:48,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:51,728 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 01:00:51,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:51,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001834406] [2024-06-28 01:00:51,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001834406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:51,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:51,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:00:51,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365017416] [2024-06-28 01:00:51,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:51,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:00:51,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:51,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:00:51,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:00:51,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:00:51,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 441 transitions, 6698 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:51,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:51,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:00:51,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:53,666 INFO L124 PetriNetUnfolderBase]: 2467/4498 cut-off events. [2024-06-28 01:00:53,666 INFO L125 PetriNetUnfolderBase]: For 196584/196584 co-relation queries the response was YES. [2024-06-28 01:00:53,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32664 conditions, 4498 events. 2467/4498 cut-off events. For 196584/196584 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 30055 event pairs, 744 based on Foata normal form. 2/4267 useless extension candidates. Maximal degree in co-relation 32471. Up to 3993 conditions per place. [2024-06-28 01:00:53,744 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 410 selfloop transitions, 57 changer transitions 0/474 dead transitions. [2024-06-28 01:00:53,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 474 transitions, 7832 flow [2024-06-28 01:00:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:00:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:00:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-06-28 01:00:53,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782051282051282 [2024-06-28 01:00:53,745 INFO L175 Difference]: Start difference. First operand has 413 places, 441 transitions, 6698 flow. Second operand 12 states and 177 transitions. [2024-06-28 01:00:53,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 474 transitions, 7832 flow [2024-06-28 01:00:55,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 474 transitions, 7631 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-28 01:00:55,582 INFO L231 Difference]: Finished difference. Result has 416 places, 443 transitions, 6688 flow [2024-06-28 01:00:55,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6497, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6688, PETRI_PLACES=416, PETRI_TRANSITIONS=443} [2024-06-28 01:00:55,582 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 373 predicate places. [2024-06-28 01:00:55,583 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 443 transitions, 6688 flow [2024-06-28 01:00:55,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:55,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:55,583 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 01:00:55,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 01:00:55,583 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:55,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:55,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1603809465, now seen corresponding path program 6 times [2024-06-28 01:00:55,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:55,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424593986] [2024-06-28 01:00:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:55,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:58,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:58,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424593986] [2024-06-28 01:00:58,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424593986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:58,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:58,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:58,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609565834] [2024-06-28 01:00:58,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:58,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:58,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:58,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:58,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:00:58,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 443 transitions, 6688 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:58,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:58,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:00:58,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:00,251 INFO L124 PetriNetUnfolderBase]: 2493/4540 cut-off events. [2024-06-28 01:01:00,251 INFO L125 PetriNetUnfolderBase]: For 198642/198642 co-relation queries the response was YES. [2024-06-28 01:01:00,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32992 conditions, 4540 events. 2493/4540 cut-off events. For 198642/198642 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 30378 event pairs, 708 based on Foata normal form. 2/4310 useless extension candidates. Maximal degree in co-relation 32798. Up to 4045 conditions per place. [2024-06-28 01:01:00,321 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 415 selfloop transitions, 53 changer transitions 0/475 dead transitions. [2024-06-28 01:01:00,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 475 transitions, 7884 flow [2024-06-28 01:01:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:00,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-28 01:01:00,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2024-06-28 01:01:00,322 INFO L175 Difference]: Start difference. First operand has 416 places, 443 transitions, 6688 flow. Second operand 11 states and 168 transitions. [2024-06-28 01:01:00,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 475 transitions, 7884 flow [2024-06-28 01:01:01,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 475 transitions, 7725 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-28 01:01:01,818 INFO L231 Difference]: Finished difference. Result has 417 places, 446 transitions, 6761 flow [2024-06-28 01:01:01,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6529, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6761, PETRI_PLACES=417, PETRI_TRANSITIONS=446} [2024-06-28 01:01:01,819 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 374 predicate places. [2024-06-28 01:01:01,819 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 446 transitions, 6761 flow [2024-06-28 01:01:01,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:01,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:01,819 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 01:01:01,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 01:01:01,820 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:01,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:01,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1071298671, now seen corresponding path program 7 times [2024-06-28 01:01:01,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:01,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984716679] [2024-06-28 01:01:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:01,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:04,304 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 01:01:04,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:04,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984716679] [2024-06-28 01:01:04,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984716679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:04,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:04,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:01:04,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749189857] [2024-06-28 01:01:04,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:04,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:01:04,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:04,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:01:04,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:01:04,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:01:04,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 446 transitions, 6761 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:04,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:04,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:01:04,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:06,275 INFO L124 PetriNetUnfolderBase]: 2519/4586 cut-off events. [2024-06-28 01:01:06,276 INFO L125 PetriNetUnfolderBase]: For 205550/205550 co-relation queries the response was YES. [2024-06-28 01:01:06,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33475 conditions, 4586 events. 2519/4586 cut-off events. For 205550/205550 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 30739 event pairs, 708 based on Foata normal form. 2/4356 useless extension candidates. Maximal degree in co-relation 33280. Up to 4068 conditions per place. [2024-06-28 01:01:06,345 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 422 selfloop transitions, 52 changer transitions 0/481 dead transitions. [2024-06-28 01:01:06,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 481 transitions, 8009 flow [2024-06-28 01:01:06,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:01:06,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962703962703963 [2024-06-28 01:01:06,346 INFO L175 Difference]: Start difference. First operand has 417 places, 446 transitions, 6761 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:01:06,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 481 transitions, 8009 flow [2024-06-28 01:01:07,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 481 transitions, 7807 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-28 01:01:07,925 INFO L231 Difference]: Finished difference. Result has 419 places, 450 transitions, 6793 flow [2024-06-28 01:01:07,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6559, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6793, PETRI_PLACES=419, PETRI_TRANSITIONS=450} [2024-06-28 01:01:07,926 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 376 predicate places. [2024-06-28 01:01:07,926 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 450 transitions, 6793 flow [2024-06-28 01:01:07,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:07,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:07,926 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 01:01:07,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 01:01:07,927 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:07,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:07,927 INFO L85 PathProgramCache]: Analyzing trace with hash 972634635, now seen corresponding path program 8 times [2024-06-28 01:01:07,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:07,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022928145] [2024-06-28 01:01:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:07,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:10,454 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 01:01:10,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:10,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022928145] [2024-06-28 01:01:10,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022928145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:10,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:10,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:10,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056709693] [2024-06-28 01:01:10,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:10,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:10,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:10,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:10,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:10,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:01:10,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 450 transitions, 6793 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:10,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:10,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:01:10,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:12,459 INFO L124 PetriNetUnfolderBase]: 2553/4654 cut-off events. [2024-06-28 01:01:12,460 INFO L125 PetriNetUnfolderBase]: For 211611/211611 co-relation queries the response was YES. [2024-06-28 01:01:12,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33996 conditions, 4654 events. 2553/4654 cut-off events. For 211611/211611 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 31302 event pairs, 698 based on Foata normal form. 2/4423 useless extension candidates. Maximal degree in co-relation 33800. Up to 4048 conditions per place. [2024-06-28 01:01:12,532 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 432 selfloop transitions, 50 changer transitions 0/489 dead transitions. [2024-06-28 01:01:12,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 489 transitions, 8149 flow [2024-06-28 01:01:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:01:12,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-06-28 01:01:12,534 INFO L175 Difference]: Start difference. First operand has 419 places, 450 transitions, 6793 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:01:12,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 489 transitions, 8149 flow [2024-06-28 01:01:14,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 489 transitions, 7953 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 01:01:14,381 INFO L231 Difference]: Finished difference. Result has 421 places, 452 transitions, 6761 flow [2024-06-28 01:01:14,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6597, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6761, PETRI_PLACES=421, PETRI_TRANSITIONS=452} [2024-06-28 01:01:14,381 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 378 predicate places. [2024-06-28 01:01:14,381 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 452 transitions, 6761 flow [2024-06-28 01:01:14,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:14,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:14,382 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 01:01:14,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 01:01:14,382 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:14,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:14,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1130457831, now seen corresponding path program 9 times [2024-06-28 01:01:14,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:14,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526622162] [2024-06-28 01:01:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:14,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:16,717 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 01:01:16,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:16,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526622162] [2024-06-28 01:01:16,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526622162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:16,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:16,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:16,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689119935] [2024-06-28 01:01:16,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:16,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:16,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:16,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:16,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:16,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:01:16,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 452 transitions, 6761 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:16,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:16,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:01:16,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:18,577 INFO L124 PetriNetUnfolderBase]: 2588/4722 cut-off events. [2024-06-28 01:01:18,578 INFO L125 PetriNetUnfolderBase]: For 217686/217686 co-relation queries the response was YES. [2024-06-28 01:01:18,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34443 conditions, 4722 events. 2588/4722 cut-off events. For 217686/217686 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 31969 event pairs, 707 based on Foata normal form. 2/4485 useless extension candidates. Maximal degree in co-relation 34246. Up to 4125 conditions per place. [2024-06-28 01:01:18,653 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 432 selfloop transitions, 56 changer transitions 0/495 dead transitions. [2024-06-28 01:01:18,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 495 transitions, 8095 flow [2024-06-28 01:01:18,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:01:18,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-06-28 01:01:18,655 INFO L175 Difference]: Start difference. First operand has 421 places, 452 transitions, 6761 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:01:18,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 495 transitions, 8095 flow [2024-06-28 01:01:20,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 495 transitions, 7979 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 01:01:20,273 INFO L231 Difference]: Finished difference. Result has 424 places, 461 transitions, 6955 flow [2024-06-28 01:01:20,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6645, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6955, PETRI_PLACES=424, PETRI_TRANSITIONS=461} [2024-06-28 01:01:20,274 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 381 predicate places. [2024-06-28 01:01:20,274 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 461 transitions, 6955 flow [2024-06-28 01:01:20,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:20,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:20,274 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 01:01:20,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 01:01:20,275 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:20,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:20,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1650355257, now seen corresponding path program 2 times [2024-06-28 01:01:20,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:20,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064741105] [2024-06-28 01:01:20,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:20,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:24,121 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 01:01:24,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:24,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064741105] [2024-06-28 01:01:24,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064741105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:24,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:24,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:24,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722313210] [2024-06-28 01:01:24,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:24,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:24,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:24,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:24,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:24,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:01:24,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 461 transitions, 6955 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:24,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:24,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:01:24,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:26,467 INFO L124 PetriNetUnfolderBase]: 2606/4748 cut-off events. [2024-06-28 01:01:26,467 INFO L125 PetriNetUnfolderBase]: For 222552/222552 co-relation queries the response was YES. [2024-06-28 01:01:26,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34773 conditions, 4748 events. 2606/4748 cut-off events. For 222552/222552 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 32103 event pairs, 775 based on Foata normal form. 2/4505 useless extension candidates. Maximal degree in co-relation 34574. Up to 4233 conditions per place. [2024-06-28 01:01:26,538 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 428 selfloop transitions, 60 changer transitions 0/495 dead transitions. [2024-06-28 01:01:26,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 495 transitions, 8145 flow [2024-06-28 01:01:26,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:01:26,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:01:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 179 transitions. [2024-06-28 01:01:26,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38247863247863245 [2024-06-28 01:01:26,540 INFO L175 Difference]: Start difference. First operand has 424 places, 461 transitions, 6955 flow. Second operand 12 states and 179 transitions. [2024-06-28 01:01:26,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 495 transitions, 8145 flow [2024-06-28 01:01:28,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 495 transitions, 7951 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-28 01:01:28,331 INFO L231 Difference]: Finished difference. Result has 428 places, 465 transitions, 6988 flow [2024-06-28 01:01:28,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6761, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6988, PETRI_PLACES=428, PETRI_TRANSITIONS=465} [2024-06-28 01:01:28,332 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 385 predicate places. [2024-06-28 01:01:28,332 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 465 transitions, 6988 flow [2024-06-28 01:01:28,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:28,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:28,332 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 01:01:28,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 01:01:28,332 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:28,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:28,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1856299933, now seen corresponding path program 10 times [2024-06-28 01:01:28,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:28,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842956445] [2024-06-28 01:01:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:28,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:31,000 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 01:01:31,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:31,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842956445] [2024-06-28 01:01:31,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842956445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:31,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:31,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:31,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557056220] [2024-06-28 01:01:31,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:31,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:31,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:31,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:31,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:01:31,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 465 transitions, 6988 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:31,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:31,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:01:31,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:33,039 INFO L124 PetriNetUnfolderBase]: 2626/4790 cut-off events. [2024-06-28 01:01:33,040 INFO L125 PetriNetUnfolderBase]: For 224395/224395 co-relation queries the response was YES. [2024-06-28 01:01:33,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35103 conditions, 4790 events. 2626/4790 cut-off events. For 224395/224395 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 32453 event pairs, 742 based on Foata normal form. 2/4546 useless extension candidates. Maximal degree in co-relation 34903. Up to 4163 conditions per place. [2024-06-28 01:01:33,125 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 415 selfloop transitions, 77 changer transitions 0/499 dead transitions. [2024-06-28 01:01:33,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 499 transitions, 8256 flow [2024-06-28 01:01:33,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:33,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:01:33,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40093240093240096 [2024-06-28 01:01:33,127 INFO L175 Difference]: Start difference. First operand has 428 places, 465 transitions, 6988 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:01:33,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 499 transitions, 8256 flow [2024-06-28 01:01:35,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 499 transitions, 8093 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-28 01:01:35,083 INFO L231 Difference]: Finished difference. Result has 429 places, 466 transitions, 7030 flow [2024-06-28 01:01:35,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6825, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7030, PETRI_PLACES=429, PETRI_TRANSITIONS=466} [2024-06-28 01:01:35,083 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 386 predicate places. [2024-06-28 01:01:35,084 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 466 transitions, 7030 flow [2024-06-28 01:01:35,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:35,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:35,084 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 01:01:35,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 01:01:35,084 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:35,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1856293423, now seen corresponding path program 11 times [2024-06-28 01:01:35,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:35,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596369608] [2024-06-28 01:01:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:35,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:37,846 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 01:01:37,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:37,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596369608] [2024-06-28 01:01:37,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596369608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:37,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:37,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:37,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742035731] [2024-06-28 01:01:37,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:37,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:37,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:37,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:37,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:37,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:01:37,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 466 transitions, 7030 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:37,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:37,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:01:37,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:39,925 INFO L124 PetriNetUnfolderBase]: 2642/4819 cut-off events. [2024-06-28 01:01:39,925 INFO L125 PetriNetUnfolderBase]: For 230058/230058 co-relation queries the response was YES. [2024-06-28 01:01:39,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35549 conditions, 4819 events. 2642/4819 cut-off events. For 230058/230058 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32717 event pairs, 735 based on Foata normal form. 2/4574 useless extension candidates. Maximal degree in co-relation 35348. Up to 4187 conditions per place. [2024-06-28 01:01:39,995 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 420 selfloop transitions, 76 changer transitions 0/503 dead transitions. [2024-06-28 01:01:39,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 503 transitions, 8436 flow [2024-06-28 01:01:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:39,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:39,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:01:39,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-06-28 01:01:39,997 INFO L175 Difference]: Start difference. First operand has 429 places, 466 transitions, 7030 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:01:39,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 503 transitions, 8436 flow [2024-06-28 01:01:41,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 503 transitions, 8259 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 01:01:41,754 INFO L231 Difference]: Finished difference. Result has 432 places, 470 transitions, 7230 flow [2024-06-28 01:01:41,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6853, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7230, PETRI_PLACES=432, PETRI_TRANSITIONS=470} [2024-06-28 01:01:41,755 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 389 predicate places. [2024-06-28 01:01:41,755 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 470 transitions, 7230 flow [2024-06-28 01:01:41,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:41,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:41,756 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 01:01:41,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 01:01:41,756 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:41,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:41,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1628398783, now seen corresponding path program 12 times [2024-06-28 01:01:41,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:41,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504285869] [2024-06-28 01:01:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:41,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:44,756 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 01:01:44,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:44,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504285869] [2024-06-28 01:01:44,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504285869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:44,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:44,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:44,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648608409] [2024-06-28 01:01:44,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:44,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:44,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:44,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:44,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:01:44,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 470 transitions, 7230 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:44,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:44,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:01:44,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:46,778 INFO L124 PetriNetUnfolderBase]: 2658/4848 cut-off events. [2024-06-28 01:01:46,778 INFO L125 PetriNetUnfolderBase]: For 239029/239029 co-relation queries the response was YES. [2024-06-28 01:01:46,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35937 conditions, 4848 events. 2658/4848 cut-off events. For 239029/239029 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 32973 event pairs, 756 based on Foata normal form. 2/4602 useless extension candidates. Maximal degree in co-relation 35734. Up to 4298 conditions per place. [2024-06-28 01:01:46,866 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 435 selfloop transitions, 60 changer transitions 0/502 dead transitions. [2024-06-28 01:01:46,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 502 transitions, 8502 flow [2024-06-28 01:01:46,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:46,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:01:46,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 01:01:46,868 INFO L175 Difference]: Start difference. First operand has 432 places, 470 transitions, 7230 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:01:46,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 502 transitions, 8502 flow [2024-06-28 01:01:48,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 502 transitions, 8201 flow, removed 99 selfloop flow, removed 7 redundant places. [2024-06-28 01:01:48,911 INFO L231 Difference]: Finished difference. Result has 436 places, 472 transitions, 7181 flow [2024-06-28 01:01:48,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6929, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7181, PETRI_PLACES=436, PETRI_TRANSITIONS=472} [2024-06-28 01:01:48,912 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 393 predicate places. [2024-06-28 01:01:48,912 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 472 transitions, 7181 flow [2024-06-28 01:01:48,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:48,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:48,912 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 01:01:48,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 01:01:48,912 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:48,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:48,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1864574143, now seen corresponding path program 13 times [2024-06-28 01:01:48,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:48,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712543459] [2024-06-28 01:01:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:48,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:52,001 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 01:01:52,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:52,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712543459] [2024-06-28 01:01:52,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712543459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:52,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:52,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234570241] [2024-06-28 01:01:52,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:52,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:52,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:52,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:01:52,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 472 transitions, 7181 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:52,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:52,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:01:52,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:54,076 INFO L124 PetriNetUnfolderBase]: 2678/4890 cut-off events. [2024-06-28 01:01:54,077 INFO L125 PetriNetUnfolderBase]: For 243296/243296 co-relation queries the response was YES. [2024-06-28 01:01:54,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36253 conditions, 4890 events. 2678/4890 cut-off events. For 243296/243296 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 33314 event pairs, 754 based on Foata normal form. 2/4642 useless extension candidates. Maximal degree in co-relation 36048. Up to 4166 conditions per place. [2024-06-28 01:01:54,165 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 401 selfloop transitions, 99 changer transitions 0/507 dead transitions. [2024-06-28 01:01:54,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 507 transitions, 8481 flow [2024-06-28 01:01:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:54,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:54,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:01:54,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40559440559440557 [2024-06-28 01:01:54,166 INFO L175 Difference]: Start difference. First operand has 436 places, 472 transitions, 7181 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:01:54,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 507 transitions, 8481 flow [2024-06-28 01:01:56,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 507 transitions, 8233 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-28 01:01:56,025 INFO L231 Difference]: Finished difference. Result has 438 places, 473 transitions, 7188 flow [2024-06-28 01:01:56,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6933, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7188, PETRI_PLACES=438, PETRI_TRANSITIONS=473} [2024-06-28 01:01:56,026 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 395 predicate places. [2024-06-28 01:01:56,026 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 473 transitions, 7188 flow [2024-06-28 01:01:56,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:56,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:56,026 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 01:01:56,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 01:01:56,027 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:56,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:56,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1856539501, now seen corresponding path program 3 times [2024-06-28 01:01:56,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:56,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366696539] [2024-06-28 01:01:56,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:56,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:59,296 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 01:01:59,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366696539] [2024-06-28 01:01:59,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366696539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:59,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:59,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:59,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773219578] [2024-06-28 01:01:59,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:59,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:59,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:59,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:59,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:59,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:01:59,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 473 transitions, 7188 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:59,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:59,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:01:59,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:01,503 INFO L124 PetriNetUnfolderBase]: 2691/4909 cut-off events. [2024-06-28 01:02:01,503 INFO L125 PetriNetUnfolderBase]: For 242660/242660 co-relation queries the response was YES. [2024-06-28 01:02:01,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36298 conditions, 4909 events. 2691/4909 cut-off events. For 242660/242660 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 33469 event pairs, 758 based on Foata normal form. 2/4657 useless extension candidates. Maximal degree in co-relation 36092. Up to 4269 conditions per place. [2024-06-28 01:02:01,590 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 418 selfloop transitions, 82 changer transitions 0/507 dead transitions. [2024-06-28 01:02:01,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 507 transitions, 8404 flow [2024-06-28 01:02:01,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:02:01,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:02:01,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2024-06-28 01:02:01,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 01:02:01,592 INFO L175 Difference]: Start difference. First operand has 438 places, 473 transitions, 7188 flow. Second operand 12 states and 182 transitions. [2024-06-28 01:02:01,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 507 transitions, 8404 flow [2024-06-28 01:02:03,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 507 transitions, 8179 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 01:02:03,565 INFO L231 Difference]: Finished difference. Result has 441 places, 475 transitions, 7211 flow [2024-06-28 01:02:03,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6963, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7211, PETRI_PLACES=441, PETRI_TRANSITIONS=475} [2024-06-28 01:02:03,566 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 398 predicate places. [2024-06-28 01:02:03,566 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 475 transitions, 7211 flow [2024-06-28 01:02:03,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:03,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:03,566 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 01:02:03,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 01:02:03,567 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:03,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:03,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1864583071, now seen corresponding path program 4 times [2024-06-28 01:02:03,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:03,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990616734] [2024-06-28 01:02:03,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:03,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:07,173 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 01:02:07,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:07,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990616734] [2024-06-28 01:02:07,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990616734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:07,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:07,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:07,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342214084] [2024-06-28 01:02:07,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:07,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:07,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:07,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:07,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:07,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:02:07,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 475 transitions, 7211 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:07,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:07,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:02:07,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:09,441 INFO L124 PetriNetUnfolderBase]: 2704/4928 cut-off events. [2024-06-28 01:02:09,442 INFO L125 PetriNetUnfolderBase]: For 242843/242843 co-relation queries the response was YES. [2024-06-28 01:02:09,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36290 conditions, 4928 events. 2704/4928 cut-off events. For 242843/242843 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 33588 event pairs, 757 based on Foata normal form. 2/4673 useless extension candidates. Maximal degree in co-relation 36083. Up to 4199 conditions per place. [2024-06-28 01:02:09,524 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 399 selfloop transitions, 104 changer transitions 0/510 dead transitions. [2024-06-28 01:02:09,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 510 transitions, 8443 flow [2024-06-28 01:02:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:02:09,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:02:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-28 01:02:09,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39316239316239315 [2024-06-28 01:02:09,525 INFO L175 Difference]: Start difference. First operand has 441 places, 475 transitions, 7211 flow. Second operand 12 states and 184 transitions. [2024-06-28 01:02:09,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 510 transitions, 8443 flow [2024-06-28 01:02:11,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 510 transitions, 8225 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-28 01:02:11,447 INFO L231 Difference]: Finished difference. Result has 443 places, 477 transitions, 7289 flow [2024-06-28 01:02:11,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6993, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7289, PETRI_PLACES=443, PETRI_TRANSITIONS=477} [2024-06-28 01:02:11,448 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 400 predicate places. [2024-06-28 01:02:11,448 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 477 transitions, 7289 flow [2024-06-28 01:02:11,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:11,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:11,448 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 01:02:11,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 01:02:11,449 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:11,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:11,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1864871371, now seen corresponding path program 5 times [2024-06-28 01:02:11,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:11,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223114314] [2024-06-28 01:02:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:14,902 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 01:02:14,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:14,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223114314] [2024-06-28 01:02:14,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223114314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:14,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:14,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:14,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644624735] [2024-06-28 01:02:14,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:14,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:14,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:14,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:14,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:15,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:02:15,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 477 transitions, 7289 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:15,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:15,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:02:15,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:17,216 INFO L124 PetriNetUnfolderBase]: 2717/4947 cut-off events. [2024-06-28 01:02:17,216 INFO L125 PetriNetUnfolderBase]: For 246168/246168 co-relation queries the response was YES. [2024-06-28 01:02:17,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36522 conditions, 4947 events. 2717/4947 cut-off events. For 246168/246168 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 33711 event pairs, 751 based on Foata normal form. 2/4689 useless extension candidates. Maximal degree in co-relation 36314. Up to 4113 conditions per place. [2024-06-28 01:02:17,299 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 374 selfloop transitions, 132 changer transitions 0/513 dead transitions. [2024-06-28 01:02:17,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 513 transitions, 8537 flow [2024-06-28 01:02:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:02:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:02:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-28 01:02:17,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3974358974358974 [2024-06-28 01:02:17,301 INFO L175 Difference]: Start difference. First operand has 443 places, 477 transitions, 7289 flow. Second operand 12 states and 186 transitions. [2024-06-28 01:02:17,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 513 transitions, 8537 flow [2024-06-28 01:02:19,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 513 transitions, 8271 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-28 01:02:19,366 INFO L231 Difference]: Finished difference. Result has 445 places, 479 transitions, 7379 flow [2024-06-28 01:02:19,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7023, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7379, PETRI_PLACES=445, PETRI_TRANSITIONS=479} [2024-06-28 01:02:19,366 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 402 predicate places. [2024-06-28 01:02:19,367 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 479 transitions, 7379 flow [2024-06-28 01:02:19,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:19,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:19,367 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 01:02:19,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 01:02:19,367 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:19,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:19,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1332364669, now seen corresponding path program 1 times [2024-06-28 01:02:19,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:19,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479059398] [2024-06-28 01:02:19,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:19,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:22,500 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 01:02:22,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:22,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479059398] [2024-06-28 01:02:22,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479059398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:22,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:22,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:22,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046994527] [2024-06-28 01:02:22,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:22,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:22,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:22,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:22,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:22,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:02:22,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 479 transitions, 7379 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:22,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:22,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:02:22,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:24,756 INFO L124 PetriNetUnfolderBase]: 2733/4978 cut-off events. [2024-06-28 01:02:24,756 INFO L125 PetriNetUnfolderBase]: For 253640/253640 co-relation queries the response was YES. [2024-06-28 01:02:24,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37004 conditions, 4978 events. 2733/4978 cut-off events. For 253640/253640 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 34116 event pairs, 942 based on Foata normal form. 2/4723 useless extension candidates. Maximal degree in co-relation 36795. Up to 4419 conditions per place. [2024-06-28 01:02:24,827 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 452 selfloop transitions, 53 changer transitions 0/512 dead transitions. [2024-06-28 01:02:24,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 512 transitions, 8711 flow [2024-06-28 01:02:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:02:24,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:02:24,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-06-28 01:02:24,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782051282051282 [2024-06-28 01:02:24,829 INFO L175 Difference]: Start difference. First operand has 445 places, 479 transitions, 7379 flow. Second operand 12 states and 177 transitions. [2024-06-28 01:02:24,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 512 transitions, 8711 flow [2024-06-28 01:02:26,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 512 transitions, 8385 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-28 01:02:26,840 INFO L231 Difference]: Finished difference. Result has 447 places, 481 transitions, 7303 flow [2024-06-28 01:02:26,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7053, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7303, PETRI_PLACES=447, PETRI_TRANSITIONS=481} [2024-06-28 01:02:26,841 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 404 predicate places. [2024-06-28 01:02:26,841 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 481 transitions, 7303 flow [2024-06-28 01:02:26,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:26,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:26,841 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 01:02:26,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 01:02:26,842 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:26,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:26,843 INFO L85 PathProgramCache]: Analyzing trace with hash -670201179, now seen corresponding path program 14 times [2024-06-28 01:02:26,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:26,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833629752] [2024-06-28 01:02:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:26,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:29,319 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 01:02:29,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:29,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833629752] [2024-06-28 01:02:29,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833629752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:29,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:29,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:29,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665344906] [2024-06-28 01:02:29,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:29,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:29,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:29,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:29,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:29,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:02:29,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 481 transitions, 7303 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:29,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:29,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:02:29,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:31,346 INFO L124 PetriNetUnfolderBase]: 2753/5012 cut-off events. [2024-06-28 01:02:31,346 INFO L125 PetriNetUnfolderBase]: For 261325/261325 co-relation queries the response was YES. [2024-06-28 01:02:31,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37321 conditions, 5012 events. 2753/5012 cut-off events. For 261325/261325 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 34287 event pairs, 774 based on Foata normal form. 2/4754 useless extension candidates. Maximal degree in co-relation 37111. Up to 4429 conditions per place. [2024-06-28 01:02:31,433 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 455 selfloop transitions, 56 changer transitions 0/518 dead transitions. [2024-06-28 01:02:31,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 518 transitions, 8735 flow [2024-06-28 01:02:31,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:02:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:02:31,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:02:31,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-06-28 01:02:31,435 INFO L175 Difference]: Start difference. First operand has 447 places, 481 transitions, 7303 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:02:31,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 518 transitions, 8735 flow [2024-06-28 01:02:33,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 518 transitions, 8511 flow, removed 62 selfloop flow, removed 10 redundant places. [2024-06-28 01:02:33,542 INFO L231 Difference]: Finished difference. Result has 448 places, 482 transitions, 7249 flow [2024-06-28 01:02:33,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7079, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7249, PETRI_PLACES=448, PETRI_TRANSITIONS=482} [2024-06-28 01:02:33,542 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 405 predicate places. [2024-06-28 01:02:33,543 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 482 transitions, 7249 flow [2024-06-28 01:02:33,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:33,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:33,543 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 01:02:33,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 01:02:33,543 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:33,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:33,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1332364297, now seen corresponding path program 6 times [2024-06-28 01:02:33,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:33,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322276558] [2024-06-28 01:02:33,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:33,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:33,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:36,768 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 01:02:36,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:36,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322276558] [2024-06-28 01:02:36,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322276558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:36,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:36,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:36,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306403521] [2024-06-28 01:02:36,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:36,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:36,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:36,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:36,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:02:36,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 482 transitions, 7249 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:36,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:36,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:02:36,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:39,119 INFO L124 PetriNetUnfolderBase]: 2783/5062 cut-off events. [2024-06-28 01:02:39,119 INFO L125 PetriNetUnfolderBase]: For 278974/278974 co-relation queries the response was YES. [2024-06-28 01:02:39,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37871 conditions, 5062 events. 2783/5062 cut-off events. For 278974/278974 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 34664 event pairs, 768 based on Foata normal form. 2/4795 useless extension candidates. Maximal degree in co-relation 37660. Up to 4106 conditions per place. [2024-06-28 01:02:39,211 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 369 selfloop transitions, 146 changer transitions 0/522 dead transitions. [2024-06-28 01:02:39,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 522 transitions, 8853 flow [2024-06-28 01:02:39,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:02:39,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:02:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 01:02:39,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40384615384615385 [2024-06-28 01:02:39,212 INFO L175 Difference]: Start difference. First operand has 448 places, 482 transitions, 7249 flow. Second operand 12 states and 189 transitions. [2024-06-28 01:02:39,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 522 transitions, 8853 flow [2024-06-28 01:02:41,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 522 transitions, 8711 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 01:02:41,335 INFO L231 Difference]: Finished difference. Result has 451 places, 486 transitions, 7581 flow [2024-06-28 01:02:41,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7107, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7581, PETRI_PLACES=451, PETRI_TRANSITIONS=486} [2024-06-28 01:02:41,336 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 408 predicate places. [2024-06-28 01:02:41,336 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 486 transitions, 7581 flow [2024-06-28 01:02:41,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:41,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:41,336 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 01:02:41,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 01:02:41,337 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:41,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:41,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1095701989, now seen corresponding path program 15 times [2024-06-28 01:02:41,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:41,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651739137] [2024-06-28 01:02:41,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:41,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:43,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:43,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:43,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651739137] [2024-06-28 01:02:43,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651739137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:43,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:43,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:43,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136537187] [2024-06-28 01:02:43,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:43,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:43,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:43,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:43,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:43,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:02:43,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 486 transitions, 7581 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:43,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:43,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:02:43,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:45,828 INFO L124 PetriNetUnfolderBase]: 2803/5099 cut-off events. [2024-06-28 01:02:45,829 INFO L125 PetriNetUnfolderBase]: For 284499/284499 co-relation queries the response was YES. [2024-06-28 01:02:45,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38602 conditions, 5099 events. 2803/5099 cut-off events. For 284499/284499 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 34943 event pairs, 772 based on Foata normal form. 2/4832 useless extension candidates. Maximal degree in co-relation 38390. Up to 4504 conditions per place. [2024-06-28 01:02:45,908 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 463 selfloop transitions, 54 changer transitions 0/524 dead transitions. [2024-06-28 01:02:45,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 524 transitions, 9033 flow [2024-06-28 01:02:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:02:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:02:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:02:45,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40559440559440557 [2024-06-28 01:02:45,910 INFO L175 Difference]: Start difference. First operand has 451 places, 486 transitions, 7581 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:02:45,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 524 transitions, 9033 flow [2024-06-28 01:02:48,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 524 transitions, 8770 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 01:02:48,015 INFO L231 Difference]: Finished difference. Result has 454 places, 487 transitions, 7486 flow [2024-06-28 01:02:48,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7318, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7486, PETRI_PLACES=454, PETRI_TRANSITIONS=487} [2024-06-28 01:02:48,015 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 411 predicate places. [2024-06-28 01:02:48,016 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 487 transitions, 7486 flow [2024-06-28 01:02:48,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:48,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:48,016 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 01:02:48,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 01:02:48,016 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:48,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:48,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1634894461, now seen corresponding path program 7 times [2024-06-28 01:02:48,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:48,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084676986] [2024-06-28 01:02:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:48,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:51,674 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 01:02:51,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:51,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084676986] [2024-06-28 01:02:51,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084676986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:51,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:51,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:02:51,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959501465] [2024-06-28 01:02:51,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:51,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:02:51,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:51,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:02:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:02:51,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:02:51,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 487 transitions, 7486 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:51,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:51,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:02:51,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:54,179 INFO L124 PetriNetUnfolderBase]: 2799/5099 cut-off events. [2024-06-28 01:02:54,180 INFO L125 PetriNetUnfolderBase]: For 271884/271884 co-relation queries the response was YES. [2024-06-28 01:02:54,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38152 conditions, 5099 events. 2799/5099 cut-off events. For 271884/271884 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 34981 event pairs, 799 based on Foata normal form. 2/4829 useless extension candidates. Maximal degree in co-relation 37938. Up to 4518 conditions per place. [2024-06-28 01:02:54,257 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 447 selfloop transitions, 64 changer transitions 0/518 dead transitions. [2024-06-28 01:02:54,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 518 transitions, 8644 flow [2024-06-28 01:02:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:02:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:02:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-28 01:02:54,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-28 01:02:54,258 INFO L175 Difference]: Start difference. First operand has 454 places, 487 transitions, 7486 flow. Second operand 12 states and 180 transitions. [2024-06-28 01:02:54,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 518 transitions, 8644 flow [2024-06-28 01:02:56,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 518 transitions, 8466 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 01:02:56,428 INFO L231 Difference]: Finished difference. Result has 457 places, 487 transitions, 7442 flow [2024-06-28 01:02:56,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7308, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7442, PETRI_PLACES=457, PETRI_TRANSITIONS=487} [2024-06-28 01:02:56,429 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 414 predicate places. [2024-06-28 01:02:56,429 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 487 transitions, 7442 flow [2024-06-28 01:02:56,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:56,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:56,429 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 01:02:56,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 01:02:56,429 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:02:56,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:56,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1919595829, now seen corresponding path program 16 times [2024-06-28 01:02:56,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:56,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368114324] [2024-06-28 01:02:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:56,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:02:58,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:58,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368114324] [2024-06-28 01:02:58,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368114324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:58,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:58,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:02:58,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612716621] [2024-06-28 01:02:58,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:58,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:02:58,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:58,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:02:58,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:02:59,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:02:59,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 487 transitions, 7442 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:59,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:59,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:02:59,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:01,072 INFO L124 PetriNetUnfolderBase]: 2819/5147 cut-off events. [2024-06-28 01:03:01,073 INFO L125 PetriNetUnfolderBase]: For 274997/274997 co-relation queries the response was YES. [2024-06-28 01:03:01,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38485 conditions, 5147 events. 2819/5147 cut-off events. For 274997/274997 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 35491 event pairs, 903 based on Foata normal form. 2/4879 useless extension candidates. Maximal degree in co-relation 38270. Up to 4458 conditions per place. [2024-06-28 01:03:01,165 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 442 selfloop transitions, 68 changer transitions 0/517 dead transitions. [2024-06-28 01:03:01,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 517 transitions, 8748 flow [2024-06-28 01:03:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:03:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:03:01,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:03:01,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2024-06-28 01:03:01,167 INFO L175 Difference]: Start difference. First operand has 457 places, 487 transitions, 7442 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:03:01,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 517 transitions, 8748 flow [2024-06-28 01:03:03,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 517 transitions, 8567 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-28 01:03:03,614 INFO L231 Difference]: Finished difference. Result has 456 places, 488 transitions, 7467 flow [2024-06-28 01:03:03,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7261, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7467, PETRI_PLACES=456, PETRI_TRANSITIONS=488} [2024-06-28 01:03:03,615 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 413 predicate places. [2024-06-28 01:03:03,615 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 488 transitions, 7467 flow [2024-06-28 01:03:03,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:03,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:03,615 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 01:03:03,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 01:03:03,616 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:03,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:03,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1919602339, now seen corresponding path program 17 times [2024-06-28 01:03:03,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:03,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014149071] [2024-06-28 01:03:03,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:03,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:06,334 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 01:03:06,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:06,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014149071] [2024-06-28 01:03:06,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014149071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:06,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:06,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:03:06,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205804326] [2024-06-28 01:03:06,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:06,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:03:06,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:06,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:03:06,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:03:06,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:03:06,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 488 transitions, 7467 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:06,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:06,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:03:06,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:08,509 INFO L124 PetriNetUnfolderBase]: 2835/5174 cut-off events. [2024-06-28 01:03:08,510 INFO L125 PetriNetUnfolderBase]: For 281883/281883 co-relation queries the response was YES. [2024-06-28 01:03:08,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39021 conditions, 5174 events. 2835/5174 cut-off events. For 281883/281883 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 35716 event pairs, 876 based on Foata normal form. 2/4905 useless extension candidates. Maximal degree in co-relation 38805. Up to 4456 conditions per place. [2024-06-28 01:03:08,595 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 446 selfloop transitions, 68 changer transitions 0/521 dead transitions. [2024-06-28 01:03:08,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 521 transitions, 8915 flow [2024-06-28 01:03:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:03:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:03:08,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:03:08,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39487179487179486 [2024-06-28 01:03:08,596 INFO L175 Difference]: Start difference. First operand has 456 places, 488 transitions, 7467 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:03:08,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 521 transitions, 8915 flow [2024-06-28 01:03:11,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 521 transitions, 8749 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 01:03:11,189 INFO L231 Difference]: Finished difference. Result has 459 places, 492 transitions, 7703 flow [2024-06-28 01:03:11,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7303, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7703, PETRI_PLACES=459, PETRI_TRANSITIONS=492} [2024-06-28 01:03:11,189 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 416 predicate places. [2024-06-28 01:03:11,189 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 492 transitions, 7703 flow [2024-06-28 01:03:11,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:11,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:11,190 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 01:03:11,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 01:03:11,190 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:11,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1969200851, now seen corresponding path program 18 times [2024-06-28 01:03:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:11,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621430396] [2024-06-28 01:03:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:11,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:13,674 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 01:03:13,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:13,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621430396] [2024-06-28 01:03:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621430396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:13,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:13,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:13,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683751125] [2024-06-28 01:03:13,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:13,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:13,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:13,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:13,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:13,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:03:13,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 492 transitions, 7703 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:13,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:13,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:03:13,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:15,837 INFO L124 PetriNetUnfolderBase]: 2855/5203 cut-off events. [2024-06-28 01:03:15,837 INFO L125 PetriNetUnfolderBase]: For 288756/288756 co-relation queries the response was YES. [2024-06-28 01:03:15,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39587 conditions, 5203 events. 2855/5203 cut-off events. For 288756/288756 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 35927 event pairs, 821 based on Foata normal form. 2/4933 useless extension candidates. Maximal degree in co-relation 39369. Up to 4328 conditions per place. [2024-06-28 01:03:15,941 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 455 selfloop transitions, 65 changer transitions 0/527 dead transitions. [2024-06-28 01:03:15,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 527 transitions, 9159 flow [2024-06-28 01:03:15,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:03:15,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:03:15,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:03:15,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2024-06-28 01:03:15,942 INFO L175 Difference]: Start difference. First operand has 459 places, 492 transitions, 7703 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:03:15,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 527 transitions, 9159 flow [2024-06-28 01:03:18,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 527 transitions, 8884 flow, removed 102 selfloop flow, removed 6 redundant places. [2024-06-28 01:03:18,840 INFO L231 Difference]: Finished difference. Result has 463 places, 493 transitions, 7633 flow [2024-06-28 01:03:18,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7428, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7633, PETRI_PLACES=463, PETRI_TRANSITIONS=493} [2024-06-28 01:03:18,841 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 420 predicate places. [2024-06-28 01:03:18,841 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 493 transitions, 7633 flow [2024-06-28 01:03:18,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:18,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:18,841 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 01:03:18,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 01:03:18,842 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:18,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:18,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1978761499, now seen corresponding path program 19 times [2024-06-28 01:03:18,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:18,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368649146] [2024-06-28 01:03:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:18,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:18,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:21,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:21,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368649146] [2024-06-28 01:03:21,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368649146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:21,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:21,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:03:21,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594024392] [2024-06-28 01:03:21,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:21,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:03:21,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:03:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:03:21,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:03:21,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 493 transitions, 7633 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:21,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:21,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:03:21,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:23,374 INFO L124 PetriNetUnfolderBase]: 2879/5264 cut-off events. [2024-06-28 01:03:23,375 INFO L125 PetriNetUnfolderBase]: For 296775/296775 co-relation queries the response was YES. [2024-06-28 01:03:23,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40235 conditions, 5264 events. 2879/5264 cut-off events. For 296775/296775 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 36535 event pairs, 725 based on Foata normal form. 2/4990 useless extension candidates. Maximal degree in co-relation 40015. Up to 4269 conditions per place. [2024-06-28 01:03:23,468 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 450 selfloop transitions, 72 changer transitions 0/529 dead transitions. [2024-06-28 01:03:23,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 529 transitions, 9075 flow [2024-06-28 01:03:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:03:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:03:23,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:03:23,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40512820512820513 [2024-06-28 01:03:23,470 INFO L175 Difference]: Start difference. First operand has 463 places, 493 transitions, 7633 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:03:23,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 529 transitions, 9075 flow [2024-06-28 01:03:25,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 529 transitions, 8902 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 01:03:25,962 INFO L231 Difference]: Finished difference. Result has 466 places, 495 transitions, 7756 flow [2024-06-28 01:03:25,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7464, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7756, PETRI_PLACES=466, PETRI_TRANSITIONS=495} [2024-06-28 01:03:25,963 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 423 predicate places. [2024-06-28 01:03:25,963 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 495 transitions, 7756 flow [2024-06-28 01:03:25,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:25,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:25,963 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 01:03:25,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 01:03:25,963 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:25,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:25,964 INFO L85 PathProgramCache]: Analyzing trace with hash 802051589, now seen corresponding path program 8 times [2024-06-28 01:03:25,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:25,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615359961] [2024-06-28 01:03:25,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:25,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:30,031 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 01:03:30,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:30,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615359961] [2024-06-28 01:03:30,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615359961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:30,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:30,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:30,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35937649] [2024-06-28 01:03:30,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:30,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:30,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:30,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:30,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:30,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:03:30,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 495 transitions, 7756 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:30,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:30,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:03:30,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:32,303 INFO L124 PetriNetUnfolderBase]: 2892/5286 cut-off events. [2024-06-28 01:03:32,303 INFO L125 PetriNetUnfolderBase]: For 291620/291620 co-relation queries the response was YES. [2024-06-28 01:03:32,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40425 conditions, 5286 events. 2892/5286 cut-off events. For 291620/291620 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 36704 event pairs, 941 based on Foata normal form. 2/5006 useless extension candidates. Maximal degree in co-relation 40203. Up to 4575 conditions per place. [2024-06-28 01:03:32,399 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 434 selfloop transitions, 84 changer transitions 0/525 dead transitions. [2024-06-28 01:03:32,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 525 transitions, 9008 flow [2024-06-28 01:03:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:03:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:03:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-28 01:03:32,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37995337995337997 [2024-06-28 01:03:32,401 INFO L175 Difference]: Start difference. First operand has 466 places, 495 transitions, 7756 flow. Second operand 11 states and 163 transitions. [2024-06-28 01:03:32,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 525 transitions, 9008 flow [2024-06-28 01:03:34,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 525 transitions, 8816 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 01:03:34,926 INFO L231 Difference]: Finished difference. Result has 470 places, 497 transitions, 7842 flow [2024-06-28 01:03:34,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7564, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7842, PETRI_PLACES=470, PETRI_TRANSITIONS=497} [2024-06-28 01:03:34,927 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 427 predicate places. [2024-06-28 01:03:34,927 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 497 transitions, 7842 flow [2024-06-28 01:03:34,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:34,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:34,927 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 01:03:34,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 01:03:34,928 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:34,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:34,928 INFO L85 PathProgramCache]: Analyzing trace with hash 208640309, now seen corresponding path program 20 times [2024-06-28 01:03:34,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:34,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716371169] [2024-06-28 01:03:34,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:34,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:37,857 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 01:03:37,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:37,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716371169] [2024-06-28 01:03:37,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716371169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:37,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:37,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:37,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102054445] [2024-06-28 01:03:37,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:37,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:37,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:37,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:37,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:37,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:03:37,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 497 transitions, 7842 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:37,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:37,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:03:37,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:40,054 INFO L124 PetriNetUnfolderBase]: 2908/5309 cut-off events. [2024-06-28 01:03:40,054 INFO L125 PetriNetUnfolderBase]: For 291110/291110 co-relation queries the response was YES. [2024-06-28 01:03:40,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40687 conditions, 5309 events. 2908/5309 cut-off events. For 291110/291110 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 36854 event pairs, 827 based on Foata normal form. 2/5031 useless extension candidates. Maximal degree in co-relation 40464. Up to 4635 conditions per place. [2024-06-28 01:03:40,158 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 451 selfloop transitions, 68 changer transitions 0/526 dead transitions. [2024-06-28 01:03:40,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 526 transitions, 9170 flow [2024-06-28 01:03:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:03:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:03:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:03:40,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923076923076923 [2024-06-28 01:03:40,160 INFO L175 Difference]: Start difference. First operand has 470 places, 497 transitions, 7842 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:03:40,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 526 transitions, 9170 flow [2024-06-28 01:03:42,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 526 transitions, 8942 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 01:03:42,855 INFO L231 Difference]: Finished difference. Result has 471 places, 499 transitions, 7901 flow [2024-06-28 01:03:42,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7614, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7901, PETRI_PLACES=471, PETRI_TRANSITIONS=499} [2024-06-28 01:03:42,856 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 428 predicate places. [2024-06-28 01:03:42,856 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 499 transitions, 7901 flow [2024-06-28 01:03:42,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:42,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:42,857 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 01:03:42,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 01:03:42,857 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:42,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:42,857 INFO L85 PathProgramCache]: Analyzing trace with hash 780088605, now seen corresponding path program 21 times [2024-06-28 01:03:42,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:42,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475144219] [2024-06-28 01:03:42,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:42,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:03:45,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:45,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475144219] [2024-06-28 01:03:45,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475144219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:45,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:45,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:45,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35877020] [2024-06-28 01:03:45,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:45,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:45,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:45,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:03:45,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 499 transitions, 7901 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:45,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:45,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:03:45,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:47,629 INFO L124 PetriNetUnfolderBase]: 2928/5339 cut-off events. [2024-06-28 01:03:47,629 INFO L125 PetriNetUnfolderBase]: For 296790/296790 co-relation queries the response was YES. [2024-06-28 01:03:47,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41242 conditions, 5339 events. 2928/5339 cut-off events. For 296790/296790 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 37114 event pairs, 811 based on Foata normal form. 2/5063 useless extension candidates. Maximal degree in co-relation 41018. Up to 4616 conditions per place. [2024-06-28 01:03:47,718 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 464 selfloop transitions, 62 changer transitions 0/533 dead transitions. [2024-06-28 01:03:47,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 533 transitions, 9371 flow [2024-06-28 01:03:47,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:03:47,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:03:47,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:03:47,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025641025641026 [2024-06-28 01:03:47,720 INFO L175 Difference]: Start difference. First operand has 471 places, 499 transitions, 7901 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:03:47,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 533 transitions, 9371 flow [2024-06-28 01:03:50,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 533 transitions, 9104 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-28 01:03:50,223 INFO L231 Difference]: Finished difference. Result has 473 places, 500 transitions, 7826 flow [2024-06-28 01:03:50,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7634, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7826, PETRI_PLACES=473, PETRI_TRANSITIONS=500} [2024-06-28 01:03:50,224 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 430 predicate places. [2024-06-28 01:03:50,224 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 500 transitions, 7826 flow [2024-06-28 01:03:50,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:50,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:50,224 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 01:03:50,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 01:03:50,224 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:50,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash 779915625, now seen corresponding path program 22 times [2024-06-28 01:03:50,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:50,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069307370] [2024-06-28 01:03:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:50,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:03:52,737 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 01:03:52,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:03:52,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069307370] [2024-06-28 01:03:52,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069307370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:03:52,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:03:52,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:03:52,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881217853] [2024-06-28 01:03:52,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:03:52,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:03:52,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:03:52,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:03:52,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:03:52,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:03:52,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 500 transitions, 7826 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:52,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:03:52,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:03:52,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:03:55,008 INFO L124 PetriNetUnfolderBase]: 2944/5380 cut-off events. [2024-06-28 01:03:55,008 INFO L125 PetriNetUnfolderBase]: For 302839/302839 co-relation queries the response was YES. [2024-06-28 01:03:55,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41461 conditions, 5380 events. 2944/5380 cut-off events. For 302839/302839 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 37503 event pairs, 806 based on Foata normal form. 2/5099 useless extension candidates. Maximal degree in co-relation 41236. Up to 4663 conditions per place. [2024-06-28 01:03:55,110 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 467 selfloop transitions, 62 changer transitions 0/536 dead transitions. [2024-06-28 01:03:55,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 536 transitions, 9372 flow [2024-06-28 01:03:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:03:55,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:03:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:03:55,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 01:03:55,112 INFO L175 Difference]: Start difference. First operand has 473 places, 500 transitions, 7826 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:03:55,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 536 transitions, 9372 flow [2024-06-28 01:03:57,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 536 transitions, 9210 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 01:03:57,854 INFO L231 Difference]: Finished difference. Result has 476 places, 506 transitions, 8102 flow [2024-06-28 01:03:57,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7666, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8102, PETRI_PLACES=476, PETRI_TRANSITIONS=506} [2024-06-28 01:03:57,855 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 433 predicate places. [2024-06-28 01:03:57,856 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 506 transitions, 8102 flow [2024-06-28 01:03:57,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:03:57,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:03:57,856 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 01:03:57,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 01:03:57,856 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:03:57,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:03:57,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1016270475, now seen corresponding path program 23 times [2024-06-28 01:03:57,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:03:57,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600684899] [2024-06-28 01:03:57,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:03:57,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:03:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:00,537 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 01:04:00,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:00,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600684899] [2024-06-28 01:04:00,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600684899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:00,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:00,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:04:00,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466808325] [2024-06-28 01:04:00,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:00,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:04:00,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:00,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:04:00,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:04:00,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:04:00,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 506 transitions, 8102 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:00,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:00,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:04:00,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:02,642 INFO L124 PetriNetUnfolderBase]: 2964/5423 cut-off events. [2024-06-28 01:04:02,642 INFO L125 PetriNetUnfolderBase]: For 312113/312113 co-relation queries the response was YES. [2024-06-28 01:04:02,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42019 conditions, 5423 events. 2964/5423 cut-off events. For 312113/312113 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 37921 event pairs, 826 based on Foata normal form. 2/5139 useless extension candidates. Maximal degree in co-relation 41792. Up to 4460 conditions per place. [2024-06-28 01:04:02,750 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 411 selfloop transitions, 120 changer transitions 0/538 dead transitions. [2024-06-28 01:04:02,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 538 transitions, 9476 flow [2024-06-28 01:04:02,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:04:02,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:04:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:04:02,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40512820512820513 [2024-06-28 01:04:02,751 INFO L175 Difference]: Start difference. First operand has 476 places, 506 transitions, 8102 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:04:02,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 538 transitions, 9476 flow [2024-06-28 01:04:05,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 538 transitions, 9134 flow, removed 132 selfloop flow, removed 6 redundant places. [2024-06-28 01:04:05,307 INFO L231 Difference]: Finished difference. Result has 480 places, 507 transitions, 8071 flow [2024-06-28 01:04:05,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7760, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8071, PETRI_PLACES=480, PETRI_TRANSITIONS=507} [2024-06-28 01:04:05,307 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 437 predicate places. [2024-06-28 01:04:05,307 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 507 transitions, 8071 flow [2024-06-28 01:04:05,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:05,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:05,308 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 01:04:05,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 01:04:05,308 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:05,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:05,308 INFO L85 PathProgramCache]: Analyzing trace with hash 811908255, now seen corresponding path program 9 times [2024-06-28 01:04:05,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:05,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801624928] [2024-06-28 01:04:05,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:05,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:08,580 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 01:04:08,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:08,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801624928] [2024-06-28 01:04:08,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801624928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:08,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:08,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:04:08,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855305218] [2024-06-28 01:04:08,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:08,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:04:08,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:08,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:04:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:04:08,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:04:08,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 507 transitions, 8071 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:08,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:08,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:04:08,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:10,774 INFO L124 PetriNetUnfolderBase]: 2977/5442 cut-off events. [2024-06-28 01:04:10,774 INFO L125 PetriNetUnfolderBase]: For 304510/304510 co-relation queries the response was YES. [2024-06-28 01:04:10,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41792 conditions, 5442 events. 2977/5442 cut-off events. For 304510/304510 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 38024 event pairs, 851 based on Foata normal form. 2/5153 useless extension candidates. Maximal degree in co-relation 41563. Up to 4735 conditions per place. [2024-06-28 01:04:10,877 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 456 selfloop transitions, 74 changer transitions 0/537 dead transitions. [2024-06-28 01:04:10,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 537 transitions, 9345 flow [2024-06-28 01:04:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:04:10,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:04:10,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 01:04:10,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3822843822843823 [2024-06-28 01:04:10,879 INFO L175 Difference]: Start difference. First operand has 480 places, 507 transitions, 8071 flow. Second operand 11 states and 164 transitions. [2024-06-28 01:04:10,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 537 transitions, 9345 flow [2024-06-28 01:04:13,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 537 transitions, 9020 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-28 01:04:13,538 INFO L231 Difference]: Finished difference. Result has 483 places, 509 transitions, 7993 flow [2024-06-28 01:04:13,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7746, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7993, PETRI_PLACES=483, PETRI_TRANSITIONS=509} [2024-06-28 01:04:13,539 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 440 predicate places. [2024-06-28 01:04:13,539 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 509 transitions, 7993 flow [2024-06-28 01:04:13,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:13,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:13,539 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 01:04:13,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 01:04:13,539 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:13,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash -391109547, now seen corresponding path program 10 times [2024-06-28 01:04:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:13,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398511561] [2024-06-28 01:04:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:17,697 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 01:04:17,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:17,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398511561] [2024-06-28 01:04:17,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398511561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:17,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:17,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:04:17,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813224229] [2024-06-28 01:04:17,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:17,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:04:17,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:17,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:04:17,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:04:17,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:04:17,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 509 transitions, 7993 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:17,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:17,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:04:17,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:20,266 INFO L124 PetriNetUnfolderBase]: 3020/5505 cut-off events. [2024-06-28 01:04:20,266 INFO L125 PetriNetUnfolderBase]: For 336012/336012 co-relation queries the response was YES. [2024-06-28 01:04:20,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42398 conditions, 5505 events. 3020/5505 cut-off events. For 336012/336012 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 38454 event pairs, 818 based on Foata normal form. 4/5209 useless extension candidates. Maximal degree in co-relation 42168. Up to 4169 conditions per place. [2024-06-28 01:04:20,362 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 365 selfloop transitions, 175 changer transitions 0/547 dead transitions. [2024-06-28 01:04:20,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 547 transitions, 9743 flow [2024-06-28 01:04:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:04:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:04:20,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:04:20,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40559440559440557 [2024-06-28 01:04:20,364 INFO L175 Difference]: Start difference. First operand has 483 places, 509 transitions, 7993 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:04:20,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 547 transitions, 9743 flow [2024-06-28 01:04:23,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 547 transitions, 9528 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-28 01:04:23,293 INFO L231 Difference]: Finished difference. Result has 485 places, 515 transitions, 8435 flow [2024-06-28 01:04:23,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7780, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8435, PETRI_PLACES=485, PETRI_TRANSITIONS=515} [2024-06-28 01:04:23,293 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 442 predicate places. [2024-06-28 01:04:23,293 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 515 transitions, 8435 flow [2024-06-28 01:04:23,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:23,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:23,294 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 01:04:23,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 01:04:23,294 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:23,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:23,294 INFO L85 PathProgramCache]: Analyzing trace with hash 470440961, now seen corresponding path program 2 times [2024-06-28 01:04:23,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:23,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508161360] [2024-06-28 01:04:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:23,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:26,404 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 01:04:26,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:26,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508161360] [2024-06-28 01:04:26,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508161360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:26,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:26,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:04:26,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439189227] [2024-06-28 01:04:26,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:26,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:04:26,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:26,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:04:26,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:04:26,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:04:26,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 515 transitions, 8435 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:26,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:26,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:04:26,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:29,099 INFO L124 PetriNetUnfolderBase]: 3017/5502 cut-off events. [2024-06-28 01:04:29,099 INFO L125 PetriNetUnfolderBase]: For 306753/306753 co-relation queries the response was YES. [2024-06-28 01:04:29,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42431 conditions, 5502 events. 3017/5502 cut-off events. For 306753/306753 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 38539 event pairs, 1035 based on Foata normal form. 2/5211 useless extension candidates. Maximal degree in co-relation 42200. Up to 4744 conditions per place. [2024-06-28 01:04:29,187 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 466 selfloop transitions, 73 changer transitions 0/546 dead transitions. [2024-06-28 01:04:29,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 546 transitions, 9839 flow [2024-06-28 01:04:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:04:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:04:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-28 01:04:29,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37995337995337997 [2024-06-28 01:04:29,188 INFO L175 Difference]: Start difference. First operand has 485 places, 515 transitions, 8435 flow. Second operand 11 states and 163 transitions. [2024-06-28 01:04:29,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 546 transitions, 9839 flow [2024-06-28 01:04:31,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 546 transitions, 9513 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-28 01:04:31,744 INFO L231 Difference]: Finished difference. Result has 488 places, 517 transitions, 8415 flow [2024-06-28 01:04:31,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8109, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8415, PETRI_PLACES=488, PETRI_TRANSITIONS=517} [2024-06-28 01:04:31,744 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 445 predicate places. [2024-06-28 01:04:31,744 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 517 transitions, 8415 flow [2024-06-28 01:04:31,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:31,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:31,745 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 01:04:31,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 01:04:31,745 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:31,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:31,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1007996265, now seen corresponding path program 24 times [2024-06-28 01:04:31,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:31,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308457334] [2024-06-28 01:04:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:31,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:34,233 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 01:04:34,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:34,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308457334] [2024-06-28 01:04:34,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308457334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:34,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:34,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:04:34,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763300384] [2024-06-28 01:04:34,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:34,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:04:34,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:34,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:04:34,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:04:34,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:04:34,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 517 transitions, 8415 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:34,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:34,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:04:34,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:36,480 INFO L124 PetriNetUnfolderBase]: 3037/5542 cut-off events. [2024-06-28 01:04:36,480 INFO L125 PetriNetUnfolderBase]: For 306669/306669 co-relation queries the response was YES. [2024-06-28 01:04:36,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42894 conditions, 5542 events. 3037/5542 cut-off events. For 306669/306669 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 38815 event pairs, 850 based on Foata normal form. 2/5244 useless extension candidates. Maximal degree in co-relation 42663. Up to 4719 conditions per place. [2024-06-28 01:04:36,586 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 451 selfloop transitions, 90 changer transitions 0/548 dead transitions. [2024-06-28 01:04:36,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 548 transitions, 9805 flow [2024-06-28 01:04:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:04:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:04:36,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:04:36,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 01:04:36,587 INFO L175 Difference]: Start difference. First operand has 488 places, 517 transitions, 8415 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:04:36,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 548 transitions, 9805 flow [2024-06-28 01:04:39,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 548 transitions, 9525 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-28 01:04:39,688 INFO L231 Difference]: Finished difference. Result has 489 places, 518 transitions, 8390 flow [2024-06-28 01:04:39,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8139, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8390, PETRI_PLACES=489, PETRI_TRANSITIONS=518} [2024-06-28 01:04:39,689 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 446 predicate places. [2024-06-28 01:04:39,689 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 518 transitions, 8390 flow [2024-06-28 01:04:39,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:39,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:39,689 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 01:04:39,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 01:04:39,690 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:39,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:39,690 INFO L85 PathProgramCache]: Analyzing trace with hash 436534949, now seen corresponding path program 25 times [2024-06-28 01:04:39,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:39,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389613116] [2024-06-28 01:04:39,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:39,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:04:42,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:42,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389613116] [2024-06-28 01:04:42,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389613116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:42,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:42,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:04:42,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810761188] [2024-06-28 01:04:42,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:42,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:04:42,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:42,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:04:42,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:04:42,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:04:42,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 518 transitions, 8390 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:42,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:42,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:04:42,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:44,932 INFO L124 PetriNetUnfolderBase]: 3057/5585 cut-off events. [2024-06-28 01:04:44,933 INFO L125 PetriNetUnfolderBase]: For 301312/301312 co-relation queries the response was YES. [2024-06-28 01:04:45,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43155 conditions, 5585 events. 3057/5585 cut-off events. For 301312/301312 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 39238 event pairs, 841 based on Foata normal form. 2/5284 useless extension candidates. Maximal degree in co-relation 42923. Up to 4716 conditions per place. [2024-06-28 01:04:45,045 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 459 selfloop transitions, 87 changer transitions 0/553 dead transitions. [2024-06-28 01:04:45,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 553 transitions, 9910 flow [2024-06-28 01:04:45,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:04:45,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:04:45,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:04:45,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076923076923077 [2024-06-28 01:04:45,047 INFO L175 Difference]: Start difference. First operand has 489 places, 518 transitions, 8390 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:04:45,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 553 transitions, 9910 flow [2024-06-28 01:04:47,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 553 transitions, 9691 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 01:04:47,796 INFO L231 Difference]: Finished difference. Result has 491 places, 519 transitions, 8418 flow [2024-06-28 01:04:47,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8173, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8418, PETRI_PLACES=491, PETRI_TRANSITIONS=519} [2024-06-28 01:04:47,797 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 448 predicate places. [2024-06-28 01:04:47,797 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 519 transitions, 8418 flow [2024-06-28 01:04:47,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:47,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:47,798 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 01:04:47,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 01:04:47,798 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:47,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:47,798 INFO L85 PathProgramCache]: Analyzing trace with hash -917743701, now seen corresponding path program 11 times [2024-06-28 01:04:47,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:47,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917746848] [2024-06-28 01:04:47,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:47,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:04:51,389 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 01:04:51,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:04:51,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917746848] [2024-06-28 01:04:51,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917746848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:04:51,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:04:51,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:04:51,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497018603] [2024-06-28 01:04:51,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:04:51,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:04:51,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:04:51,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:04:51,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:04:51,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:04:51,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 519 transitions, 8418 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:51,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:04:51,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:04:51,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:04:53,797 INFO L124 PetriNetUnfolderBase]: 3070/5604 cut-off events. [2024-06-28 01:04:53,797 INFO L125 PetriNetUnfolderBase]: For 299685/299685 co-relation queries the response was YES. [2024-06-28 01:04:53,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43152 conditions, 5604 events. 3070/5604 cut-off events. For 299685/299685 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 39341 event pairs, 846 based on Foata normal form. 2/5298 useless extension candidates. Maximal degree in co-relation 42919. Up to 4621 conditions per place. [2024-06-28 01:04:53,912 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 416 selfloop transitions, 128 changer transitions 0/551 dead transitions. [2024-06-28 01:04:53,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 551 transitions, 9734 flow [2024-06-28 01:04:53,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:04:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:04:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-28 01:04:53,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2024-06-28 01:04:53,914 INFO L175 Difference]: Start difference. First operand has 491 places, 519 transitions, 8418 flow. Second operand 11 states and 168 transitions. [2024-06-28 01:04:53,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 551 transitions, 9734 flow [2024-06-28 01:04:56,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 551 transitions, 9523 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 01:04:56,687 INFO L231 Difference]: Finished difference. Result has 494 places, 521 transitions, 8564 flow [2024-06-28 01:04:56,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8207, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8564, PETRI_PLACES=494, PETRI_TRANSITIONS=521} [2024-06-28 01:04:56,687 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 451 predicate places. [2024-06-28 01:04:56,688 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 521 transitions, 8564 flow [2024-06-28 01:04:56,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:04:56,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:04:56,688 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 01:04:56,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 01:04:56,688 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:04:56,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:04:56,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1008235833, now seen corresponding path program 12 times [2024-06-28 01:04:56,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:04:56,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89195411] [2024-06-28 01:04:56,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:04:56,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:04:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:00,752 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 01:05:00,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:00,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89195411] [2024-06-28 01:05:00,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89195411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:00,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:00,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:05:00,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804400364] [2024-06-28 01:05:00,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:00,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:05:00,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:00,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:05:00,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:05:00,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:05:00,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 521 transitions, 8564 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:00,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:00,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:05:00,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:03,395 INFO L124 PetriNetUnfolderBase]: 3066/5598 cut-off events. [2024-06-28 01:05:03,396 INFO L125 PetriNetUnfolderBase]: For 277569/277569 co-relation queries the response was YES. [2024-06-28 01:05:03,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42705 conditions, 5598 events. 3066/5598 cut-off events. For 277569/277569 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 39368 event pairs, 852 based on Foata normal form. 2/5292 useless extension candidates. Maximal degree in co-relation 42471. Up to 4761 conditions per place. [2024-06-28 01:05:03,483 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 445 selfloop transitions, 98 changer transitions 0/550 dead transitions. [2024-06-28 01:05:03,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 550 transitions, 9784 flow [2024-06-28 01:05:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:05:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:05:03,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 01:05:03,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2024-06-28 01:05:03,484 INFO L175 Difference]: Start difference. First operand has 494 places, 521 transitions, 8564 flow. Second operand 11 states and 166 transitions. [2024-06-28 01:05:03,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 550 transitions, 9784 flow [2024-06-28 01:05:05,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 550 transitions, 9439 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 01:05:05,848 INFO L231 Difference]: Finished difference. Result has 496 places, 521 transitions, 8424 flow [2024-06-28 01:05:05,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8219, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8424, PETRI_PLACES=496, PETRI_TRANSITIONS=521} [2024-06-28 01:05:05,849 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 453 predicate places. [2024-06-28 01:05:05,849 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 521 transitions, 8424 flow [2024-06-28 01:05:05,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:05,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:05,849 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 01:05:05,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 01:05:05,850 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:05,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:05,851 INFO L85 PathProgramCache]: Analyzing trace with hash -419172153, now seen corresponding path program 26 times [2024-06-28 01:05:05,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:05,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291769880] [2024-06-28 01:05:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:05,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:09,325 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 01:05:09,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:09,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291769880] [2024-06-28 01:05:09,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291769880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:09,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:09,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:05:09,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878931728] [2024-06-28 01:05:09,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:09,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:05:09,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:05:09,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:05:09,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:05:09,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 521 transitions, 8424 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:09,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:09,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:05:09,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:11,636 INFO L124 PetriNetUnfolderBase]: 3082/5627 cut-off events. [2024-06-28 01:05:11,636 INFO L125 PetriNetUnfolderBase]: For 283786/283786 co-relation queries the response was YES. [2024-06-28 01:05:11,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42941 conditions, 5627 events. 3082/5627 cut-off events. For 283786/283786 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 39604 event pairs, 832 based on Foata normal form. 2/5321 useless extension candidates. Maximal degree in co-relation 42706. Up to 4893 conditions per place. [2024-06-28 01:05:11,753 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 481 selfloop transitions, 68 changer transitions 0/556 dead transitions. [2024-06-28 01:05:11,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 556 transitions, 9850 flow [2024-06-28 01:05:11,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:05:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:05:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:05:11,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-06-28 01:05:11,755 INFO L175 Difference]: Start difference. First operand has 496 places, 521 transitions, 8424 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:05:11,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 556 transitions, 9850 flow [2024-06-28 01:05:14,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 556 transitions, 9563 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 01:05:14,670 INFO L231 Difference]: Finished difference. Result has 497 places, 523 transitions, 8426 flow [2024-06-28 01:05:14,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8137, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8426, PETRI_PLACES=497, PETRI_TRANSITIONS=523} [2024-06-28 01:05:14,670 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 454 predicate places. [2024-06-28 01:05:14,671 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 523 transitions, 8426 flow [2024-06-28 01:05:14,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:14,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:14,671 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 01:05:14,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 01:05:14,671 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:14,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash -418864695, now seen corresponding path program 13 times [2024-06-28 01:05:14,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:14,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947933126] [2024-06-28 01:05:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:14,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:17,807 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 01:05:17,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:17,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947933126] [2024-06-28 01:05:17,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947933126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:17,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:17,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:05:17,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378650523] [2024-06-28 01:05:17,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:17,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:05:17,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:17,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:05:17,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:05:17,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:05:17,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 523 transitions, 8426 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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 01:05:17,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:17,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:05:17,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:20,150 INFO L124 PetriNetUnfolderBase]: 3112/5659 cut-off events. [2024-06-28 01:05:20,150 INFO L125 PetriNetUnfolderBase]: For 309080/309080 co-relation queries the response was YES. [2024-06-28 01:05:20,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43677 conditions, 5659 events. 3112/5659 cut-off events. For 309080/309080 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 39782 event pairs, 754 based on Foata normal form. 2/5349 useless extension candidates. Maximal degree in co-relation 43441. Up to 3845 conditions per place. [2024-06-28 01:05:20,269 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 295 selfloop transitions, 254 changer transitions 0/556 dead transitions. [2024-06-28 01:05:20,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 556 transitions, 10084 flow [2024-06-28 01:05:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:05:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:05:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:05:20,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4205128205128205 [2024-06-28 01:05:20,270 INFO L175 Difference]: Start difference. First operand has 497 places, 523 transitions, 8426 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:05:20,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 556 transitions, 10084 flow [2024-06-28 01:05:23,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 556 transitions, 9811 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-28 01:05:23,301 INFO L231 Difference]: Finished difference. Result has 498 places, 527 transitions, 8852 flow [2024-06-28 01:05:23,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8153, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8852, PETRI_PLACES=498, PETRI_TRANSITIONS=527} [2024-06-28 01:05:23,303 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 455 predicate places. [2024-06-28 01:05:23,304 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 527 transitions, 8852 flow [2024-06-28 01:05:23,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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 01:05:23,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:23,304 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 01:05:23,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 01:05:23,304 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:23,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:23,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1714013913, now seen corresponding path program 14 times [2024-06-28 01:05:23,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:23,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465186018] [2024-06-28 01:05:23,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:23,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:28,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:28,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465186018] [2024-06-28 01:05:28,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465186018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:28,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:28,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:05:28,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65567107] [2024-06-28 01:05:28,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:28,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:05:28,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:28,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:05:28,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:05:28,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:05:28,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 527 transitions, 8852 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:28,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:28,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:05:28,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:30,784 INFO L124 PetriNetUnfolderBase]: 3125/5678 cut-off events. [2024-06-28 01:05:30,784 INFO L125 PetriNetUnfolderBase]: For 307255/307255 co-relation queries the response was YES. [2024-06-28 01:05:30,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44415 conditions, 5678 events. 3125/5678 cut-off events. For 307255/307255 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 39933 event pairs, 801 based on Foata normal form. 2/5365 useless extension candidates. Maximal degree in co-relation 44178. Up to 4754 conditions per place. [2024-06-28 01:05:30,897 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 448 selfloop transitions, 105 changer transitions 0/560 dead transitions. [2024-06-28 01:05:30,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 560 transitions, 10196 flow [2024-06-28 01:05:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:05:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:05:30,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:05:30,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40326340326340326 [2024-06-28 01:05:30,898 INFO L175 Difference]: Start difference. First operand has 498 places, 527 transitions, 8852 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:05:30,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 560 transitions, 10196 flow [2024-06-28 01:05:33,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 560 transitions, 9644 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-28 01:05:33,981 INFO L231 Difference]: Finished difference. Result has 500 places, 529 transitions, 8609 flow [2024-06-28 01:05:33,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8304, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8609, PETRI_PLACES=500, PETRI_TRANSITIONS=529} [2024-06-28 01:05:33,982 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 457 predicate places. [2024-06-28 01:05:33,982 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 529 transitions, 8609 flow [2024-06-28 01:05:33,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:33,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:33,983 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 01:05:33,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 01:05:33,983 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:33,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash -418874925, now seen corresponding path program 15 times [2024-06-28 01:05:33,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:33,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855378532] [2024-06-28 01:05:33,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:33,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:37,642 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 01:05:37,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:37,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855378532] [2024-06-28 01:05:37,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855378532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:37,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:37,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:05:37,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567893918] [2024-06-28 01:05:37,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:37,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:05:37,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:37,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:05:37,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:05:37,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:05:37,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 529 transitions, 8609 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:37,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:37,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:05:37,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:39,998 INFO L124 PetriNetUnfolderBase]: 3138/5697 cut-off events. [2024-06-28 01:05:39,998 INFO L125 PetriNetUnfolderBase]: For 308945/308945 co-relation queries the response was YES. [2024-06-28 01:05:40,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43941 conditions, 5697 events. 3138/5697 cut-off events. For 308945/308945 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 39991 event pairs, 851 based on Foata normal form. 2/5381 useless extension candidates. Maximal degree in co-relation 43705. Up to 4918 conditions per place. [2024-06-28 01:05:40,122 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 480 selfloop transitions, 75 changer transitions 0/562 dead transitions. [2024-06-28 01:05:40,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 562 transitions, 9957 flow [2024-06-28 01:05:40,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:05:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:05:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:05:40,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40093240093240096 [2024-06-28 01:05:40,123 INFO L175 Difference]: Start difference. First operand has 500 places, 529 transitions, 8609 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:05:40,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 562 transitions, 9957 flow [2024-06-28 01:05:43,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 562 transitions, 9684 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 01:05:43,151 INFO L231 Difference]: Finished difference. Result has 502 places, 531 transitions, 8585 flow [2024-06-28 01:05:43,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8336, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8585, PETRI_PLACES=502, PETRI_TRANSITIONS=531} [2024-06-28 01:05:43,151 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 459 predicate places. [2024-06-28 01:05:43,151 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 531 transitions, 8585 flow [2024-06-28 01:05:43,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:43,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:43,152 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 01:05:43,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 01:05:43,152 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:43,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:43,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1714311141, now seen corresponding path program 27 times [2024-06-28 01:05:43,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:43,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271277267] [2024-06-28 01:05:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:43,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:46,023 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 01:05:46,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:46,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271277267] [2024-06-28 01:05:46,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271277267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:46,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:46,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:05:46,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383316697] [2024-06-28 01:05:46,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:46,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:05:46,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:46,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:05:46,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:05:46,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:05:46,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 531 transitions, 8585 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:46,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:46,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:05:46,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:48,315 INFO L124 PetriNetUnfolderBase]: 3158/5740 cut-off events. [2024-06-28 01:05:48,316 INFO L125 PetriNetUnfolderBase]: For 318906/318906 co-relation queries the response was YES. [2024-06-28 01:05:48,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44403 conditions, 5740 events. 3158/5740 cut-off events. For 318906/318906 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 40417 event pairs, 811 based on Foata normal form. 2/5422 useless extension candidates. Maximal degree in co-relation 44166. Up to 4847 conditions per place. [2024-06-28 01:05:48,425 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 459 selfloop transitions, 97 changer transitions 0/563 dead transitions. [2024-06-28 01:05:48,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 563 transitions, 10013 flow [2024-06-28 01:05:48,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:05:48,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:05:48,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:05:48,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128205128205128 [2024-06-28 01:05:48,427 INFO L175 Difference]: Start difference. First operand has 502 places, 531 transitions, 8585 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:05:48,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 563 transitions, 10013 flow [2024-06-28 01:05:51,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 563 transitions, 9796 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 01:05:51,312 INFO L231 Difference]: Finished difference. Result has 503 places, 532 transitions, 8632 flow [2024-06-28 01:05:51,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8368, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8632, PETRI_PLACES=503, PETRI_TRANSITIONS=532} [2024-06-28 01:05:51,313 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 460 predicate places. [2024-06-28 01:05:51,313 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 532 transitions, 8632 flow [2024-06-28 01:05:51,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:51,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:51,313 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 01:05:51,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 01:05:51,314 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:05:51,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:51,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1714302213, now seen corresponding path program 16 times [2024-06-28 01:05:51,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:51,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035041641] [2024-06-28 01:05:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:51,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:56,025 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 01:05:56,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:56,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035041641] [2024-06-28 01:05:56,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035041641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:56,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:56,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:05:56,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510216515] [2024-06-28 01:05:56,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:56,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:05:56,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:56,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:05:56,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:05:56,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:05:56,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 532 transitions, 8632 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:05:56,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:56,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:05:56,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:58,602 INFO L124 PetriNetUnfolderBase]: 3171/5758 cut-off events. [2024-06-28 01:05:58,603 INFO L125 PetriNetUnfolderBase]: For 322600/322600 co-relation queries the response was YES. [2024-06-28 01:05:58,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44644 conditions, 5758 events. 3171/5758 cut-off events. For 322600/322600 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 40592 event pairs, 807 based on Foata normal form. 2/5436 useless extension candidates. Maximal degree in co-relation 44406. Up to 4864 conditions per place. [2024-06-28 01:05:58,727 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 455 selfloop transitions, 104 changer transitions 0/566 dead transitions. [2024-06-28 01:05:58,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 566 transitions, 9993 flow [2024-06-28 01:05:58,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:05:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:05:58,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-28 01:05:58,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39316239316239315 [2024-06-28 01:05:58,728 INFO L175 Difference]: Start difference. First operand has 503 places, 532 transitions, 8632 flow. Second operand 12 states and 184 transitions. [2024-06-28 01:05:58,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 566 transitions, 9993 flow [2024-06-28 01:06:01,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 566 transitions, 9761 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 01:06:01,895 INFO L231 Difference]: Finished difference. Result has 507 places, 534 transitions, 8711 flow [2024-06-28 01:06:01,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8400, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8711, PETRI_PLACES=507, PETRI_TRANSITIONS=534} [2024-06-28 01:06:01,896 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 464 predicate places. [2024-06-28 01:06:01,896 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 534 transitions, 8711 flow [2024-06-28 01:06:01,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:01,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:01,897 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 01:06:01,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 01:06:01,897 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:06:01,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:01,897 INFO L85 PathProgramCache]: Analyzing trace with hash -419163225, now seen corresponding path program 17 times [2024-06-28 01:06:01,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:01,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628311405] [2024-06-28 01:06:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:01,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:05,611 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 01:06:05,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:05,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628311405] [2024-06-28 01:06:05,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628311405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:05,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:05,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:06:05,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344047686] [2024-06-28 01:06:05,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:05,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:06:05,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:06:05,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:06:05,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 39 [2024-06-28 01:06:05,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 534 transitions, 8711 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:06:05,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:05,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 39 [2024-06-28 01:06:05,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:08,142 INFO L124 PetriNetUnfolderBase]: 3184/5778 cut-off events. [2024-06-28 01:06:08,142 INFO L125 PetriNetUnfolderBase]: For 321489/321489 co-relation queries the response was YES. [2024-06-28 01:06:08,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44697 conditions, 5778 events. 3184/5778 cut-off events. For 321489/321489 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 40741 event pairs, 861 based on Foata normal form. 2/5453 useless extension candidates. Maximal degree in co-relation 44458. Up to 5041 conditions per place. [2024-06-28 01:06:08,264 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 491 selfloop transitions, 68 changer transitions 0/566 dead transitions. [2024-06-28 01:06:08,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 566 transitions, 10069 flow [2024-06-28 01:06:08,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:06:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:06:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:06:08,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962703962703963 [2024-06-28 01:06:08,265 INFO L175 Difference]: Start difference. First operand has 507 places, 534 transitions, 8711 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:06:08,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 566 transitions, 10069 flow Killed by 15