./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix052_pso.opt_rmo.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix052_pso.opt_rmo.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:40:38,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:40:38,919 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:40:38,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:40:38,922 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:40:38,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:40:38,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:40:38,936 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:40:38,937 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:40:38,937 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:40:38,937 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:40:38,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:40:38,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:40:38,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:40:38,939 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:40:38,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:40:38,939 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:40:38,940 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:40:38,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:40:38,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:40:38,941 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:40:38,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:40:38,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:40:38,942 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:40:38,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:40:38,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:40:38,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:40:38,943 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:40:38,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:40:38,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:40:38,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:40:38,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:40:38,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:40:38,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:40:38,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:40:38,945 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:40:38,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:40:38,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:40:38,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:40:38,945 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:40:38,946 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:40:38,946 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:40:38,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:40:38,946 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:40:39,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:40:39,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:40:39,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:40:39,227 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:40:39,228 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:40:39,229 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix052_pso.opt_rmo.opt_tso.opt.yml/witness.yml [2024-06-28 01:40:39,372 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:40:39,374 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:40:39,375 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i [2024-06-28 01:40:40,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:40:40,627 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:40:40,630 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix052_pso.opt_rmo.opt_tso.opt.i [2024-06-28 01:40:40,644 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0d76b546/f8e219e0b7fa4c6fa6f09714a3b676c4/FLAGed24b6c5a [2024-06-28 01:40:40,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0d76b546/f8e219e0b7fa4c6fa6f09714a3b676c4 [2024-06-28 01:40:40,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:40:40,656 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:40:40,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:40:40,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:40:40,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:40:40,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:40:39" (1/2) ... [2024-06-28 01:40:40,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6108fdbb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:40:40, skipping insertion in model container [2024-06-28 01:40:40,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:40:39" (1/2) ... [2024-06-28 01:40:40,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@59792ed3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:40:40, skipping insertion in model container [2024-06-28 01:40:40,664 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:40:40" (2/2) ... [2024-06-28 01:40:40,664 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6108fdbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:40, skipping insertion in model container [2024-06-28 01:40:40,665 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:40:40" (2/2) ... [2024-06-28 01:40:40,666 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:40:40,726 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:40:40,727 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] (((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:40:40,727 INFO L97 edCorrectnessWitness]: Location invariant before [L828-L828] (((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:40:40,727 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || y$r_buff1_thd1 == (_Bool)0) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:40:40,727 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:40:40,727 INFO L106 edCorrectnessWitness]: ghost_update [L824-L824] multithreaded = 1; [2024-06-28 01:40:40,764 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:40:40,912 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/mix052_pso.opt_rmo.opt_tso.opt.i[964,977] [2024-06-28 01:40:41,152 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:40:41,163 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:40:41,241 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/mix052_pso.opt_rmo.opt_tso.opt.i[964,977] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:40:41,337 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:40:41,381 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:40:41,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41 WrapperNode [2024-06-28 01:40:41,382 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:40:41,383 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:40:41,383 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:40:41,383 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:40:41,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (1/1) ... [2024-06-28 01:40:41,414 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (1/1) ... [2024-06-28 01:40:41,447 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 121 [2024-06-28 01:40:41,448 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:40:41,449 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:40:41,449 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:40:41,450 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:40:41,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (1/1) ... [2024-06-28 01:40:41,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (1/1) ... [2024-06-28 01:40:41,472 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (1/1) ... [2024-06-28 01:40:41,542 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:40:41,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (1/1) ... [2024-06-28 01:40:41,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (1/1) ... [2024-06-28 01:40:41,559 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (1/1) ... [2024-06-28 01:40:41,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (1/1) ... [2024-06-28 01:40:41,565 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (1/1) ... [2024-06-28 01:40:41,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (1/1) ... [2024-06-28 01:40:41,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:40:41,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:40:41,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:40:41,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:40:41,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (1/1) ... [2024-06-28 01:40:41,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:40:41,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:40:41,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:40:41,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:40:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:40:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:40:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:40:41,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:40:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:40:41,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:40:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:40:41,633 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:40:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:40:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:40:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:40:41,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:40:41,635 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:40:41,828 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:40:41,831 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:40:42,207 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:40:42,207 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:40:42,321 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:40:42,321 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:40:42,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:40:42 BoogieIcfgContainer [2024-06-28 01:40:42,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:40:42,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:40:42,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:40:42,325 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:40:42,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:40:39" (1/4) ... [2024-06-28 01:40:42,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c43c52 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:40:42, skipping insertion in model container [2024-06-28 01:40:42,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:40:40" (2/4) ... [2024-06-28 01:40:42,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c43c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:40:42, skipping insertion in model container [2024-06-28 01:40:42,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:40:41" (3/4) ... [2024-06-28 01:40:42,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c43c52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:40:42, skipping insertion in model container [2024-06-28 01:40:42,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:40:42" (4/4) ... [2024-06-28 01:40:42,327 INFO L112 eAbstractionObserver]: Analyzing ICFG mix052_pso.opt_rmo.opt_tso.opt.i [2024-06-28 01:40:42,340 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:40:42,340 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:40:42,341 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:40:42,385 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:40:42,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:40:42,438 INFO L124 PetriNetUnfolderBase]: 1/43 cut-off events. [2024-06-28 01:40:42,439 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:40:42,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 1/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-06-28 01:40:42,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 46 transitions, 104 flow [2024-06-28 01:40:42,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 95 flow [2024-06-28 01:40:42,457 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:40:42,463 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;@4eea5626, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:40:42,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:40:42,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:40:42,468 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:40:42,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:40:42,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:42,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:40:42,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:42,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash 338355012, now seen corresponding path program 1 times [2024-06-28 01:40:42,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:42,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170015062] [2024-06-28 01:40:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:42,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:43,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:43,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170015062] [2024-06-28 01:40:43,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170015062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:43,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:43,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:40:43,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418482781] [2024-06-28 01:40:43,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:40:43,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:43,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:40:43,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:40:43,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-06-28 01:40:43,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:43,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:43,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-06-28 01:40:43,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:44,053 INFO L124 PetriNetUnfolderBase]: 2575/3930 cut-off events. [2024-06-28 01:40:44,053 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-28 01:40:44,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7740 conditions, 3930 events. 2575/3930 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 22519 event pairs, 1492 based on Foata normal form. 151/3868 useless extension candidates. Maximal degree in co-relation 7728. Up to 3731 conditions per place. [2024-06-28 01:40:44,076 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 39 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-28 01:40:44,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 217 flow [2024-06-28 01:40:44,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:40:44,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:40:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-28 01:40:44,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028985507246377 [2024-06-28 01:40:44,088 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 95 flow. Second operand 3 states and 97 transitions. [2024-06-28 01:40:44,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 217 flow [2024-06-28 01:40:44,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:44,092 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 127 flow [2024-06-28 01:40:44,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-06-28 01:40:44,096 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-06-28 01:40:44,096 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 127 flow [2024-06-28 01:40:44,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:44,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:44,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:44,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:40:44,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:44,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:44,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1257853117, now seen corresponding path program 1 times [2024-06-28 01:40:44,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:44,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58060658] [2024-06-28 01:40:44,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:44,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:44,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:44,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58060658] [2024-06-28 01:40:44,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58060658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:44,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:44,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:40:44,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868326319] [2024-06-28 01:40:44,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:44,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:40:44,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:44,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:40:44,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:40:44,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-28 01:40:44,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:44,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:44,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-28 01:40:44,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:45,158 INFO L124 PetriNetUnfolderBase]: 2998/4542 cut-off events. [2024-06-28 01:40:45,158 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-06-28 01:40:45,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10052 conditions, 4542 events. 2998/4542 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26263 event pairs, 1576 based on Foata normal form. 3/4328 useless extension candidates. Maximal degree in co-relation 10040. Up to 4303 conditions per place. [2024-06-28 01:40:45,181 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 51 selfloop transitions, 9 changer transitions 0/72 dead transitions. [2024-06-28 01:40:45,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 313 flow [2024-06-28 01:40:45,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:40:45,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:40:45,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-28 01:40:45,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6684782608695652 [2024-06-28 01:40:45,183 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 127 flow. Second operand 4 states and 123 transitions. [2024-06-28 01:40:45,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 313 flow [2024-06-28 01:40:45,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:40:45,185 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 173 flow [2024-06-28 01:40:45,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2024-06-28 01:40:45,186 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-06-28 01:40:45,186 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 173 flow [2024-06-28 01:40:45,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:45,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:45,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:45,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:40:45,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:45,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:45,188 INFO L85 PathProgramCache]: Analyzing trace with hash -338739853, now seen corresponding path program 1 times [2024-06-28 01:40:45,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:45,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704456535] [2024-06-28 01:40:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:45,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:45,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:45,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704456535] [2024-06-28 01:40:45,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704456535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:45,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:45,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:40:45,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147119360] [2024-06-28 01:40:45,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:45,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:40:45,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:45,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:40:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:40:45,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-28 01:40:45,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:45,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:45,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-28 01:40:45,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:46,211 INFO L124 PetriNetUnfolderBase]: 3057/4517 cut-off events. [2024-06-28 01:40:46,212 INFO L125 PetriNetUnfolderBase]: For 1732/1732 co-relation queries the response was YES. [2024-06-28 01:40:46,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11237 conditions, 4517 events. 3057/4517 cut-off events. For 1732/1732 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24900 event pairs, 871 based on Foata normal form. 7/4327 useless extension candidates. Maximal degree in co-relation 11223. Up to 4167 conditions per place. [2024-06-28 01:40:46,233 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 71 selfloop transitions, 21 changer transitions 0/104 dead transitions. [2024-06-28 01:40:46,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 104 transitions, 525 flow [2024-06-28 01:40:46,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:40:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:40:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-06-28 01:40:46,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7130434782608696 [2024-06-28 01:40:46,235 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 173 flow. Second operand 5 states and 164 transitions. [2024-06-28 01:40:46,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 104 transitions, 525 flow [2024-06-28 01:40:46,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 104 transitions, 506 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:40:46,239 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 302 flow [2024-06-28 01:40:46,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=302, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2024-06-28 01:40:46,239 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-06-28 01:40:46,240 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 302 flow [2024-06-28 01:40:46,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:46,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:46,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:46,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:40:46,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:46,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:46,241 INFO L85 PathProgramCache]: Analyzing trace with hash 31461714, now seen corresponding path program 1 times [2024-06-28 01:40:46,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:46,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659696231] [2024-06-28 01:40:46,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:46,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:46,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:46,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659696231] [2024-06-28 01:40:46,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659696231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:46,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:46,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:40:46,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882771481] [2024-06-28 01:40:46,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:46,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:40:46,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:46,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:40:46,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:40:46,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-06-28 01:40:46,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:46,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:46,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-06-28 01:40:46,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:47,571 INFO L124 PetriNetUnfolderBase]: 3299/5513 cut-off events. [2024-06-28 01:40:47,571 INFO L125 PetriNetUnfolderBase]: For 5237/5237 co-relation queries the response was YES. [2024-06-28 01:40:47,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15179 conditions, 5513 events. 3299/5513 cut-off events. For 5237/5237 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 35788 event pairs, 1092 based on Foata normal form. 26/5110 useless extension candidates. Maximal degree in co-relation 15162. Up to 4211 conditions per place. [2024-06-28 01:40:47,610 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 83 selfloop transitions, 24 changer transitions 0/119 dead transitions. [2024-06-28 01:40:47,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 119 transitions, 680 flow [2024-06-28 01:40:47,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:40:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:40:47,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-06-28 01:40:47,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7028985507246377 [2024-06-28 01:40:47,613 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 302 flow. Second operand 6 states and 194 transitions. [2024-06-28 01:40:47,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 119 transitions, 680 flow [2024-06-28 01:40:47,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 119 transitions, 668 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 01:40:47,620 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 369 flow [2024-06-28 01:40:47,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=369, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2024-06-28 01:40:47,621 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2024-06-28 01:40:47,621 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 369 flow [2024-06-28 01:40:47,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:47,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:47,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:47,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:40:47,622 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:47,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:47,623 INFO L85 PathProgramCache]: Analyzing trace with hash -609339275, now seen corresponding path program 1 times [2024-06-28 01:40:47,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:47,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195645824] [2024-06-28 01:40:47,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:47,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:48,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:48,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:48,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195645824] [2024-06-28 01:40:48,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195645824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:48,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:48,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:40:48,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112992932] [2024-06-28 01:40:48,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:48,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:40:48,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:48,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:40:48,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:40:48,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:40:48,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 369 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:48,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:48,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:40:48,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:48,760 INFO L124 PetriNetUnfolderBase]: 3263/4998 cut-off events. [2024-06-28 01:40:48,760 INFO L125 PetriNetUnfolderBase]: For 6603/6603 co-relation queries the response was YES. [2024-06-28 01:40:48,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15953 conditions, 4998 events. 3263/4998 cut-off events. For 6603/6603 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 28642 event pairs, 885 based on Foata normal form. 4/4711 useless extension candidates. Maximal degree in co-relation 15932. Up to 4658 conditions per place. [2024-06-28 01:40:48,792 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 67 selfloop transitions, 10 changer transitions 0/88 dead transitions. [2024-06-28 01:40:48,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 88 transitions, 573 flow [2024-06-28 01:40:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:40:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:40:48,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-28 01:40:48,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739130434782609 [2024-06-28 01:40:48,794 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 369 flow. Second operand 5 states and 132 transitions. [2024-06-28 01:40:48,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 88 transitions, 573 flow [2024-06-28 01:40:48,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 512 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:48,803 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 337 flow [2024-06-28 01:40:48,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-06-28 01:40:48,804 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-06-28 01:40:48,804 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 337 flow [2024-06-28 01:40:48,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:48,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:48,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:48,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:40:48,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:48,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:48,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1724956916, now seen corresponding path program 1 times [2024-06-28 01:40:48,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:48,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498426680] [2024-06-28 01:40:48,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:48,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:48,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:48,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498426680] [2024-06-28 01:40:48,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498426680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:48,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:48,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:40:48,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929395651] [2024-06-28 01:40:48,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:48,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:40:48,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:48,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:40:48,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:40:48,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 46 [2024-06-28 01:40:48,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 337 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:48,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:48,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 46 [2024-06-28 01:40:48,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:49,069 INFO L124 PetriNetUnfolderBase]: 1055/2247 cut-off events. [2024-06-28 01:40:49,069 INFO L125 PetriNetUnfolderBase]: For 2229/2444 co-relation queries the response was YES. [2024-06-28 01:40:49,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5214 conditions, 2247 events. 1055/2247 cut-off events. For 2229/2444 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17021 event pairs, 395 based on Foata normal form. 4/2063 useless extension candidates. Maximal degree in co-relation 5192. Up to 1260 conditions per place. [2024-06-28 01:40:49,082 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 25 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2024-06-28 01:40:49,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 363 flow [2024-06-28 01:40:49,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:40:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:40:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-06-28 01:40:49,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7463768115942029 [2024-06-28 01:40:49,083 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 337 flow. Second operand 3 states and 103 transitions. [2024-06-28 01:40:49,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 363 flow [2024-06-28 01:40:49,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 67 transitions, 341 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:49,085 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 275 flow [2024-06-28 01:40:49,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2024-06-28 01:40:49,086 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-06-28 01:40:49,086 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 275 flow [2024-06-28 01:40:49,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:49,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:49,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:49,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:40:49,087 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:49,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash 155656020, now seen corresponding path program 1 times [2024-06-28 01:40:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:49,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177502585] [2024-06-28 01:40:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:49,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:49,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:49,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:49,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177502585] [2024-06-28 01:40:49,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177502585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:49,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:49,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:49,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766569544] [2024-06-28 01:40:49,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:49,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:49,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:49,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:49,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:49,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:40:49,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:49,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:49,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:40:49,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:50,265 INFO L124 PetriNetUnfolderBase]: 3488/5233 cut-off events. [2024-06-28 01:40:50,266 INFO L125 PetriNetUnfolderBase]: For 9108/9108 co-relation queries the response was YES. [2024-06-28 01:40:50,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16039 conditions, 5233 events. 3488/5233 cut-off events. For 9108/9108 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 29419 event pairs, 798 based on Foata normal form. 8/5227 useless extension candidates. Maximal degree in co-relation 16018. Up to 4567 conditions per place. [2024-06-28 01:40:50,309 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 79 selfloop transitions, 30 changer transitions 5/124 dead transitions. [2024-06-28 01:40:50,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 124 transitions, 753 flow [2024-06-28 01:40:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:50,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-28 01:40:50,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.593167701863354 [2024-06-28 01:40:50,311 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 275 flow. Second operand 7 states and 191 transitions. [2024-06-28 01:40:50,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 124 transitions, 753 flow [2024-06-28 01:40:50,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 124 transitions, 729 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:40:50,319 INFO L231 Difference]: Finished difference. Result has 70 places, 74 transitions, 452 flow [2024-06-28 01:40:50,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=452, PETRI_PLACES=70, PETRI_TRANSITIONS=74} [2024-06-28 01:40:50,320 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2024-06-28 01:40:50,320 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 74 transitions, 452 flow [2024-06-28 01:40:50,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:50,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:50,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:50,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:40:50,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:50,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:50,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1474868812, now seen corresponding path program 2 times [2024-06-28 01:40:50,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:50,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060084702] [2024-06-28 01:40:50,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:50,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:50,874 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 01:40:50,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:50,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060084702] [2024-06-28 01:40:50,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060084702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:50,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:50,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:50,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276851490] [2024-06-28 01:40:50,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:50,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:50,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:50,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:50,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:50,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:40:50,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 74 transitions, 452 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:50,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:50,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:40:50,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:51,648 INFO L124 PetriNetUnfolderBase]: 3126/4726 cut-off events. [2024-06-28 01:40:51,649 INFO L125 PetriNetUnfolderBase]: For 9931/9933 co-relation queries the response was YES. [2024-06-28 01:40:51,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15639 conditions, 4726 events. 3126/4726 cut-off events. For 9931/9933 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26430 event pairs, 730 based on Foata normal form. 12/4722 useless extension candidates. Maximal degree in co-relation 15614. Up to 4038 conditions per place. [2024-06-28 01:40:51,678 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 71 selfloop transitions, 34 changer transitions 0/115 dead transitions. [2024-06-28 01:40:51,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 115 transitions, 840 flow [2024-06-28 01:40:51,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:40:51,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:40:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-28 01:40:51,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688405797101449 [2024-06-28 01:40:51,680 INFO L175 Difference]: Start difference. First operand has 70 places, 74 transitions, 452 flow. Second operand 6 states and 157 transitions. [2024-06-28 01:40:51,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 115 transitions, 840 flow [2024-06-28 01:40:51,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 115 transitions, 801 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:51,691 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 552 flow [2024-06-28 01:40:51,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=552, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2024-06-28 01:40:51,692 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 20 predicate places. [2024-06-28 01:40:51,692 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 552 flow [2024-06-28 01:40:51,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:51,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:51,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:51,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:40:51,693 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:51,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:51,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1629291018, now seen corresponding path program 3 times [2024-06-28 01:40:51,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:51,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527696124] [2024-06-28 01:40:51,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:51,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:52,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:52,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:52,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527696124] [2024-06-28 01:40:52,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527696124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:52,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:52,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:52,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171979969] [2024-06-28 01:40:52,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:52,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:52,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:52,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:52,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:52,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:40:52,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 552 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:52,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:52,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:40:52,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:52,936 INFO L124 PetriNetUnfolderBase]: 3084/4646 cut-off events. [2024-06-28 01:40:52,937 INFO L125 PetriNetUnfolderBase]: For 12062/12064 co-relation queries the response was YES. [2024-06-28 01:40:52,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15758 conditions, 4646 events. 3084/4646 cut-off events. For 12062/12064 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25674 event pairs, 738 based on Foata normal form. 6/4631 useless extension candidates. Maximal degree in co-relation 15732. Up to 3982 conditions per place. [2024-06-28 01:40:52,960 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 67 selfloop transitions, 35 changer transitions 0/112 dead transitions. [2024-06-28 01:40:52,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 112 transitions, 858 flow [2024-06-28 01:40:52,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:40:52,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:40:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-28 01:40:52,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543478260869565 [2024-06-28 01:40:52,961 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 552 flow. Second operand 6 states and 153 transitions. [2024-06-28 01:40:52,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 112 transitions, 858 flow [2024-06-28 01:40:52,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 112 transitions, 805 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:52,975 INFO L231 Difference]: Finished difference. Result has 75 places, 79 transitions, 579 flow [2024-06-28 01:40:52,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=579, PETRI_PLACES=75, PETRI_TRANSITIONS=79} [2024-06-28 01:40:52,976 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 23 predicate places. [2024-06-28 01:40:52,976 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 79 transitions, 579 flow [2024-06-28 01:40:52,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:52,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:52,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:52,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:40:52,977 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:52,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:52,977 INFO L85 PathProgramCache]: Analyzing trace with hash 673292626, now seen corresponding path program 1 times [2024-06-28 01:40:52,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:52,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808763294] [2024-06-28 01:40:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:52,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:53,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:53,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808763294] [2024-06-28 01:40:53,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808763294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:53,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:53,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:53,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839397953] [2024-06-28 01:40:53,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:53,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:53,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:53,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:53,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:53,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:40:53,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 579 flow. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:53,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:53,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:40:53,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:54,462 INFO L124 PetriNetUnfolderBase]: 2646/4208 cut-off events. [2024-06-28 01:40:54,463 INFO L125 PetriNetUnfolderBase]: For 11611/11613 co-relation queries the response was YES. [2024-06-28 01:40:54,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14143 conditions, 4208 events. 2646/4208 cut-off events. For 11611/11613 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 24573 event pairs, 692 based on Foata normal form. 4/4196 useless extension candidates. Maximal degree in co-relation 14116. Up to 3773 conditions per place. [2024-06-28 01:40:54,485 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 96 selfloop transitions, 13 changer transitions 0/120 dead transitions. [2024-06-28 01:40:54,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 120 transitions, 936 flow [2024-06-28 01:40:54,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:54,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:40:54,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:40:54,487 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 579 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:40:54,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 120 transitions, 936 flow [2024-06-28 01:40:54,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 120 transitions, 816 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:54,501 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 541 flow [2024-06-28 01:40:54,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=541, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2024-06-28 01:40:54,503 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2024-06-28 01:40:54,503 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 541 flow [2024-06-28 01:40:54,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:54,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:54,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:54,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:40:54,504 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:54,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:54,504 INFO L85 PathProgramCache]: Analyzing trace with hash 173762047, now seen corresponding path program 1 times [2024-06-28 01:40:54,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245414546] [2024-06-28 01:40:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:54,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:55,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:55,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245414546] [2024-06-28 01:40:55,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245414546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:55,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:55,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:55,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412101271] [2024-06-28 01:40:55,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:55,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:55,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:55,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:55,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:55,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:40:55,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 541 flow. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:55,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:55,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:40:55,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:55,576 INFO L124 PetriNetUnfolderBase]: 2648/4521 cut-off events. [2024-06-28 01:40:55,577 INFO L125 PetriNetUnfolderBase]: For 10454/10456 co-relation queries the response was YES. [2024-06-28 01:40:55,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14525 conditions, 4521 events. 2648/4521 cut-off events. For 10454/10456 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 28878 event pairs, 981 based on Foata normal form. 1/4416 useless extension candidates. Maximal degree in co-relation 14496. Up to 3837 conditions per place. [2024-06-28 01:40:55,603 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 85 selfloop transitions, 9 changer transitions 0/105 dead transitions. [2024-06-28 01:40:55,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 105 transitions, 820 flow [2024-06-28 01:40:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:40:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:40:55,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-28 01:40:55,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:40:55,606 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 541 flow. Second operand 5 states and 120 transitions. [2024-06-28 01:40:55,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 105 transitions, 820 flow [2024-06-28 01:40:55,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 105 transitions, 781 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:40:55,619 INFO L231 Difference]: Finished difference. Result has 79 places, 91 transitions, 596 flow [2024-06-28 01:40:55,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=596, PETRI_PLACES=79, PETRI_TRANSITIONS=91} [2024-06-28 01:40:55,619 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-06-28 01:40:55,619 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 91 transitions, 596 flow [2024-06-28 01:40:55,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:55,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:55,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:55,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:40:55,620 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:55,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:55,621 INFO L85 PathProgramCache]: Analyzing trace with hash -285328841, now seen corresponding path program 1 times [2024-06-28 01:40:55,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:55,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832033028] [2024-06-28 01:40:55,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:55,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:56,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:56,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832033028] [2024-06-28 01:40:56,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832033028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:56,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:56,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:56,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282715822] [2024-06-28 01:40:56,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:56,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:56,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:56,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:56,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:56,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:40:56,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 91 transitions, 596 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:56,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:56,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:40:56,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:57,122 INFO L124 PetriNetUnfolderBase]: 3368/5469 cut-off events. [2024-06-28 01:40:57,122 INFO L125 PetriNetUnfolderBase]: For 16820/16824 co-relation queries the response was YES. [2024-06-28 01:40:57,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18764 conditions, 5469 events. 3368/5469 cut-off events. For 16820/16824 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 33253 event pairs, 623 based on Foata normal form. 16/5351 useless extension candidates. Maximal degree in co-relation 18733. Up to 3533 conditions per place. [2024-06-28 01:40:57,220 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 97 selfloop transitions, 36 changer transitions 0/143 dead transitions. [2024-06-28 01:40:57,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 143 transitions, 1074 flow [2024-06-28 01:40:57,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:57,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-06-28 01:40:57,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577639751552795 [2024-06-28 01:40:57,223 INFO L175 Difference]: Start difference. First operand has 79 places, 91 transitions, 596 flow. Second operand 7 states and 186 transitions. [2024-06-28 01:40:57,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 143 transitions, 1074 flow [2024-06-28 01:40:57,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 143 transitions, 1051 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-28 01:40:57,238 INFO L231 Difference]: Finished difference. Result has 84 places, 93 transitions, 677 flow [2024-06-28 01:40:57,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=677, PETRI_PLACES=84, PETRI_TRANSITIONS=93} [2024-06-28 01:40:57,239 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-06-28 01:40:57,240 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 93 transitions, 677 flow [2024-06-28 01:40:57,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:57,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:57,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:57,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:40:57,240 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:57,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:57,241 INFO L85 PathProgramCache]: Analyzing trace with hash -282471881, now seen corresponding path program 2 times [2024-06-28 01:40:57,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:57,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994402373] [2024-06-28 01:40:57,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:57,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:57,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:57,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994402373] [2024-06-28 01:40:57,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994402373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:57,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:57,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:40:57,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101160484] [2024-06-28 01:40:57,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:57,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:40:57,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:57,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:40:57,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:40:57,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:40:57,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 93 transitions, 677 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:57,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:57,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:40:57,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:58,817 INFO L124 PetriNetUnfolderBase]: 3482/5708 cut-off events. [2024-06-28 01:40:58,818 INFO L125 PetriNetUnfolderBase]: For 21037/21041 co-relation queries the response was YES. [2024-06-28 01:40:58,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20207 conditions, 5708 events. 3482/5708 cut-off events. For 21037/21041 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 35467 event pairs, 906 based on Foata normal form. 24/5578 useless extension candidates. Maximal degree in co-relation 20174. Up to 4280 conditions per place. [2024-06-28 01:40:58,856 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 91 selfloop transitions, 40 changer transitions 0/141 dead transitions. [2024-06-28 01:40:58,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 141 transitions, 1107 flow [2024-06-28 01:40:58,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:40:58,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:40:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:40:58,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683229813664596 [2024-06-28 01:40:58,858 INFO L175 Difference]: Start difference. First operand has 84 places, 93 transitions, 677 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:40:58,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 141 transitions, 1107 flow [2024-06-28 01:40:58,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 141 transitions, 1062 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:40:58,883 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 748 flow [2024-06-28 01:40:58,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=748, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2024-06-28 01:40:58,883 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2024-06-28 01:40:58,883 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 748 flow [2024-06-28 01:40:58,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:58,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:58,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:58,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:40:58,884 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:40:58,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:58,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1333276040, now seen corresponding path program 1 times [2024-06-28 01:40:58,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:58,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375234056] [2024-06-28 01:40:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:58,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:59,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:59,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375234056] [2024-06-28 01:40:59,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375234056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:59,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:59,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:40:59,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065188756] [2024-06-28 01:40:59,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:59,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:40:59,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:59,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:40:59,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:40:59,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:40:59,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 748 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:40:59,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:59,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:40:59,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:00,203 INFO L124 PetriNetUnfolderBase]: 3499/5822 cut-off events. [2024-06-28 01:41:00,203 INFO L125 PetriNetUnfolderBase]: For 22864/22870 co-relation queries the response was YES. [2024-06-28 01:41:00,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21263 conditions, 5822 events. 3499/5822 cut-off events. For 22864/22870 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 37540 event pairs, 1279 based on Foata normal form. 7/5686 useless extension candidates. Maximal degree in co-relation 21228. Up to 5064 conditions per place. [2024-06-28 01:41:00,237 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 104 selfloop transitions, 15 changer transitions 0/129 dead transitions. [2024-06-28 01:41:00,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 1147 flow [2024-06-28 01:41:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:41:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:41:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-28 01:41:00,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5144927536231884 [2024-06-28 01:41:00,239 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 748 flow. Second operand 6 states and 142 transitions. [2024-06-28 01:41:00,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 1147 flow [2024-06-28 01:41:00,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 129 transitions, 1055 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:00,268 INFO L231 Difference]: Finished difference. Result has 90 places, 104 transitions, 795 flow [2024-06-28 01:41:00,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=795, PETRI_PLACES=90, PETRI_TRANSITIONS=104} [2024-06-28 01:41:00,269 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 38 predicate places. [2024-06-28 01:41:00,269 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 104 transitions, 795 flow [2024-06-28 01:41:00,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:00,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:00,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:00,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:41:00,269 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:00,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:00,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1514395983, now seen corresponding path program 1 times [2024-06-28 01:41:00,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:00,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777832383] [2024-06-28 01:41:00,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:00,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:01,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:01,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777832383] [2024-06-28 01:41:01,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777832383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:01,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:01,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:01,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371505333] [2024-06-28 01:41:01,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:01,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:01,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:01,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:01,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:01,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:01,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 104 transitions, 795 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:01,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:01,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:01,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:02,262 INFO L124 PetriNetUnfolderBase]: 3578/5880 cut-off events. [2024-06-28 01:41:02,262 INFO L125 PetriNetUnfolderBase]: For 24250/24252 co-relation queries the response was YES. [2024-06-28 01:41:02,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22065 conditions, 5880 events. 3578/5880 cut-off events. For 24250/24252 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 37239 event pairs, 1003 based on Foata normal form. 4/5729 useless extension candidates. Maximal degree in co-relation 22028. Up to 4667 conditions per place. [2024-06-28 01:41:02,302 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 101 selfloop transitions, 62 changer transitions 0/173 dead transitions. [2024-06-28 01:41:02,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 173 transitions, 1477 flow [2024-06-28 01:41:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:02,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:41:02,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461956521739131 [2024-06-28 01:41:02,304 INFO L175 Difference]: Start difference. First operand has 90 places, 104 transitions, 795 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:41:02,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 173 transitions, 1477 flow [2024-06-28 01:41:02,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 173 transitions, 1441 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:02,342 INFO L231 Difference]: Finished difference. Result has 96 places, 123 transitions, 1097 flow [2024-06-28 01:41:02,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1097, PETRI_PLACES=96, PETRI_TRANSITIONS=123} [2024-06-28 01:41:02,343 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2024-06-28 01:41:02,343 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 123 transitions, 1097 flow [2024-06-28 01:41:02,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:02,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:02,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:02,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:41:02,343 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:02,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:02,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1505825103, now seen corresponding path program 2 times [2024-06-28 01:41:02,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:02,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367600797] [2024-06-28 01:41:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:02,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:03,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:03,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367600797] [2024-06-28 01:41:03,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367600797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:03,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:03,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:03,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353694441] [2024-06-28 01:41:03,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:03,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:03,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:03,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:03,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:03,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:03,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 123 transitions, 1097 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:03,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:03,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:03,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:04,134 INFO L124 PetriNetUnfolderBase]: 3663/6004 cut-off events. [2024-06-28 01:41:04,135 INFO L125 PetriNetUnfolderBase]: For 29193/29195 co-relation queries the response was YES. [2024-06-28 01:41:04,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23844 conditions, 6004 events. 3663/6004 cut-off events. For 29193/29195 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38013 event pairs, 830 based on Foata normal form. 4/5862 useless extension candidates. Maximal degree in co-relation 23805. Up to 4424 conditions per place. [2024-06-28 01:41:04,176 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 104 selfloop transitions, 69 changer transitions 0/183 dead transitions. [2024-06-28 01:41:04,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 183 transitions, 1743 flow [2024-06-28 01:41:04,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:04,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-06-28 01:41:04,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 01:41:04,179 INFO L175 Difference]: Start difference. First operand has 96 places, 123 transitions, 1097 flow. Second operand 8 states and 207 transitions. [2024-06-28 01:41:04,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 183 transitions, 1743 flow [2024-06-28 01:41:04,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 183 transitions, 1648 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:04,238 INFO L231 Difference]: Finished difference. Result has 102 places, 128 transitions, 1240 flow [2024-06-28 01:41:04,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1240, PETRI_PLACES=102, PETRI_TRANSITIONS=128} [2024-06-28 01:41:04,238 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2024-06-28 01:41:04,239 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 128 transitions, 1240 flow [2024-06-28 01:41:04,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:04,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:04,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:04,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:41:04,239 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:04,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:04,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1742297133, now seen corresponding path program 3 times [2024-06-28 01:41:04,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:04,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459008480] [2024-06-28 01:41:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:04,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:05,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:05,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459008480] [2024-06-28 01:41:05,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459008480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:05,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:05,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:05,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126624396] [2024-06-28 01:41:05,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:05,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:05,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:05,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:05,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:05,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:05,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 128 transitions, 1240 flow. Second operand has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:05,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:05,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:05,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:06,143 INFO L124 PetriNetUnfolderBase]: 3655/6027 cut-off events. [2024-06-28 01:41:06,143 INFO L125 PetriNetUnfolderBase]: For 33566/33568 co-relation queries the response was YES. [2024-06-28 01:41:06,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24338 conditions, 6027 events. 3655/6027 cut-off events. For 33566/33568 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 38367 event pairs, 1058 based on Foata normal form. 4/5873 useless extension candidates. Maximal degree in co-relation 24297. Up to 4790 conditions per place. [2024-06-28 01:41:06,181 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 106 selfloop transitions, 62 changer transitions 0/178 dead transitions. [2024-06-28 01:41:06,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 178 transitions, 1759 flow [2024-06-28 01:41:06,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:06,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:06,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 201 transitions. [2024-06-28 01:41:06,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461956521739131 [2024-06-28 01:41:06,183 INFO L175 Difference]: Start difference. First operand has 102 places, 128 transitions, 1240 flow. Second operand 8 states and 201 transitions. [2024-06-28 01:41:06,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 178 transitions, 1759 flow [2024-06-28 01:41:06,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 178 transitions, 1600 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:06,249 INFO L231 Difference]: Finished difference. Result has 106 places, 129 transitions, 1235 flow [2024-06-28 01:41:06,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1235, PETRI_PLACES=106, PETRI_TRANSITIONS=129} [2024-06-28 01:41:06,250 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 54 predicate places. [2024-06-28 01:41:06,250 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 129 transitions, 1235 flow [2024-06-28 01:41:06,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.333333333333334) internal successors, (129), 9 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:06,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:06,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:06,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:41:06,251 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:06,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:06,251 INFO L85 PathProgramCache]: Analyzing trace with hash 999011574, now seen corresponding path program 2 times [2024-06-28 01:41:06,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:06,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75078431] [2024-06-28 01:41:06,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:06,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:06,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:06,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:06,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75078431] [2024-06-28 01:41:06,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75078431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:06,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:06,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:41:06,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129266954] [2024-06-28 01:41:06,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:06,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:41:06,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:06,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:41:06,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:41:06,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:06,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 129 transitions, 1235 flow. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:06,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:06,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:06,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:07,620 INFO L124 PetriNetUnfolderBase]: 3657/6143 cut-off events. [2024-06-28 01:41:07,620 INFO L125 PetriNetUnfolderBase]: For 34693/34719 co-relation queries the response was YES. [2024-06-28 01:41:07,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24352 conditions, 6143 events. 3657/6143 cut-off events. For 34693/34719 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 40324 event pairs, 1215 based on Foata normal form. 21/6009 useless extension candidates. Maximal degree in co-relation 24309. Up to 5283 conditions per place. [2024-06-28 01:41:07,660 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 127 selfloop transitions, 20 changer transitions 0/157 dead transitions. [2024-06-28 01:41:07,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 157 transitions, 1649 flow [2024-06-28 01:41:07,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:41:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:41:07,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:41:07,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036231884057971 [2024-06-28 01:41:07,662 INFO L175 Difference]: Start difference. First operand has 106 places, 129 transitions, 1235 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:41:07,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 157 transitions, 1649 flow [2024-06-28 01:41:07,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 157 transitions, 1517 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:07,710 INFO L231 Difference]: Finished difference. Result has 108 places, 135 transitions, 1210 flow [2024-06-28 01:41:07,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1210, PETRI_PLACES=108, PETRI_TRANSITIONS=135} [2024-06-28 01:41:07,710 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 56 predicate places. [2024-06-28 01:41:07,710 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 135 transitions, 1210 flow [2024-06-28 01:41:07,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:07,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:07,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:07,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:41:07,711 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:07,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:07,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1327556168, now seen corresponding path program 1 times [2024-06-28 01:41:07,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:07,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285321656] [2024-06-28 01:41:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:07,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:08,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:08,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285321656] [2024-06-28 01:41:08,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285321656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:08,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:08,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:41:08,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565220410] [2024-06-28 01:41:08,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:08,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:41:08,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:41:08,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:41:08,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:41:08,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 135 transitions, 1210 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:08,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:08,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:41:08,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:08,991 INFO L124 PetriNetUnfolderBase]: 3424/5861 cut-off events. [2024-06-28 01:41:08,991 INFO L125 PetriNetUnfolderBase]: For 37700/37702 co-relation queries the response was YES. [2024-06-28 01:41:09,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23704 conditions, 5861 events. 3424/5861 cut-off events. For 37700/37702 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 39031 event pairs, 1095 based on Foata normal form. 3/5712 useless extension candidates. Maximal degree in co-relation 23659. Up to 4923 conditions per place. [2024-06-28 01:41:09,031 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 136 selfloop transitions, 13 changer transitions 0/163 dead transitions. [2024-06-28 01:41:09,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 163 transitions, 1628 flow [2024-06-28 01:41:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:41:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:41:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-28 01:41:09,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253623188405797 [2024-06-28 01:41:09,032 INFO L175 Difference]: Start difference. First operand has 108 places, 135 transitions, 1210 flow. Second operand 6 states and 145 transitions. [2024-06-28 01:41:09,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 163 transitions, 1628 flow [2024-06-28 01:41:09,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 163 transitions, 1592 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:09,150 INFO L231 Difference]: Finished difference. Result has 113 places, 142 transitions, 1279 flow [2024-06-28 01:41:09,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1279, PETRI_PLACES=113, PETRI_TRANSITIONS=142} [2024-06-28 01:41:09,150 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 61 predicate places. [2024-06-28 01:41:09,150 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 142 transitions, 1279 flow [2024-06-28 01:41:09,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:09,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:09,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:09,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:41:09,151 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:09,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:09,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1321812488, now seen corresponding path program 2 times [2024-06-28 01:41:09,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:09,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080721234] [2024-06-28 01:41:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:09,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:09,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:09,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:09,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080721234] [2024-06-28 01:41:09,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080721234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:09,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:09,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:41:09,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163844029] [2024-06-28 01:41:09,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:09,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:41:09,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:09,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:41:09,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:41:09,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:41:09,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 142 transitions, 1279 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:09,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:09,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:41:09,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:10,517 INFO L124 PetriNetUnfolderBase]: 3469/6047 cut-off events. [2024-06-28 01:41:10,517 INFO L125 PetriNetUnfolderBase]: For 41122/41128 co-relation queries the response was YES. [2024-06-28 01:41:10,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24924 conditions, 6047 events. 3469/6047 cut-off events. For 41122/41128 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 40853 event pairs, 1108 based on Foata normal form. 7/5870 useless extension candidates. Maximal degree in co-relation 24876. Up to 4953 conditions per place. [2024-06-28 01:41:10,559 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 132 selfloop transitions, 20 changer transitions 0/166 dead transitions. [2024-06-28 01:41:10,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 166 transitions, 1679 flow [2024-06-28 01:41:10,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:41:10,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:41:10,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 01:41:10,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-28 01:41:10,568 INFO L175 Difference]: Start difference. First operand has 113 places, 142 transitions, 1279 flow. Second operand 6 states and 146 transitions. [2024-06-28 01:41:10,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 166 transitions, 1679 flow [2024-06-28 01:41:10,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 166 transitions, 1646 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:10,636 INFO L231 Difference]: Finished difference. Result has 116 places, 145 transitions, 1323 flow [2024-06-28 01:41:10,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1323, PETRI_PLACES=116, PETRI_TRANSITIONS=145} [2024-06-28 01:41:10,636 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 64 predicate places. [2024-06-28 01:41:10,637 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 145 transitions, 1323 flow [2024-06-28 01:41:10,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:10,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:10,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:10,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:41:10,639 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:10,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash -518340290, now seen corresponding path program 1 times [2024-06-28 01:41:10,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:10,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168776356] [2024-06-28 01:41:10,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:10,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:11,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:11,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168776356] [2024-06-28 01:41:11,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168776356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:11,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:11,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:11,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697052699] [2024-06-28 01:41:11,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:11,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:11,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:11,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:11,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:11,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:11,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 145 transitions, 1323 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:11,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:11,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:11,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:12,319 INFO L124 PetriNetUnfolderBase]: 3760/6428 cut-off events. [2024-06-28 01:41:12,319 INFO L125 PetriNetUnfolderBase]: For 44127/44129 co-relation queries the response was YES. [2024-06-28 01:41:12,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26881 conditions, 6428 events. 3760/6428 cut-off events. For 44127/44129 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 42768 event pairs, 1220 based on Foata normal form. 1/6238 useless extension candidates. Maximal degree in co-relation 26832. Up to 5441 conditions per place. [2024-06-28 01:41:12,367 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 146 selfloop transitions, 23 changer transitions 0/179 dead transitions. [2024-06-28 01:41:12,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 179 transitions, 1851 flow [2024-06-28 01:41:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 01:41:12,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937888198757764 [2024-06-28 01:41:12,369 INFO L175 Difference]: Start difference. First operand has 116 places, 145 transitions, 1323 flow. Second operand 7 states and 159 transitions. [2024-06-28 01:41:12,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 179 transitions, 1851 flow [2024-06-28 01:41:12,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 179 transitions, 1798 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:12,447 INFO L231 Difference]: Finished difference. Result has 121 places, 154 transitions, 1455 flow [2024-06-28 01:41:12,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1455, PETRI_PLACES=121, PETRI_TRANSITIONS=154} [2024-06-28 01:41:12,447 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 69 predicate places. [2024-06-28 01:41:12,447 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 154 transitions, 1455 flow [2024-06-28 01:41:12,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:12,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:12,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:12,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:41:12,448 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:12,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:12,449 INFO L85 PathProgramCache]: Analyzing trace with hash 90620552, now seen corresponding path program 1 times [2024-06-28 01:41:12,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159681876] [2024-06-28 01:41:12,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:12,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:13,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:13,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159681876] [2024-06-28 01:41:13,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159681876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:13,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:13,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:13,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372925732] [2024-06-28 01:41:13,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:13,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:13,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:13,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:13,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:13,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:13,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 154 transitions, 1455 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:13,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:13,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:13,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:14,013 INFO L124 PetriNetUnfolderBase]: 3811/6418 cut-off events. [2024-06-28 01:41:14,013 INFO L125 PetriNetUnfolderBase]: For 49176/49190 co-relation queries the response was YES. [2024-06-28 01:41:14,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27879 conditions, 6418 events. 3811/6418 cut-off events. For 49176/49190 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 42561 event pairs, 1176 based on Foata normal form. 17/6273 useless extension candidates. Maximal degree in co-relation 27827. Up to 5321 conditions per place. [2024-06-28 01:41:14,067 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 167 selfloop transitions, 39 changer transitions 0/216 dead transitions. [2024-06-28 01:41:14,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 216 transitions, 2259 flow [2024-06-28 01:41:14,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-06-28 01:41:14,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2024-06-28 01:41:14,070 INFO L175 Difference]: Start difference. First operand has 121 places, 154 transitions, 1455 flow. Second operand 7 states and 174 transitions. [2024-06-28 01:41:14,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 216 transitions, 2259 flow [2024-06-28 01:41:14,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 216 transitions, 2159 flow, removed 41 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:14,168 INFO L231 Difference]: Finished difference. Result has 127 places, 180 transitions, 1791 flow [2024-06-28 01:41:14,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1791, PETRI_PLACES=127, PETRI_TRANSITIONS=180} [2024-06-28 01:41:14,169 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 75 predicate places. [2024-06-28 01:41:14,169 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 180 transitions, 1791 flow [2024-06-28 01:41:14,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:14,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:14,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:14,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:41:14,170 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:14,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:14,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1124075409, now seen corresponding path program 1 times [2024-06-28 01:41:14,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:14,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444794462] [2024-06-28 01:41:14,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:14,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:14,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:14,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444794462] [2024-06-28 01:41:14,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444794462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:14,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:14,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:14,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606672961] [2024-06-28 01:41:14,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:14,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:14,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:14,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:14,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:15,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:15,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 180 transitions, 1791 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:15,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:15,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:15,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:16,094 INFO L124 PetriNetUnfolderBase]: 4076/6884 cut-off events. [2024-06-28 01:41:16,094 INFO L125 PetriNetUnfolderBase]: For 60324/60330 co-relation queries the response was YES. [2024-06-28 01:41:16,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31963 conditions, 6884 events. 4076/6884 cut-off events. For 60324/60330 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 46268 event pairs, 1163 based on Foata normal form. 13/6724 useless extension candidates. Maximal degree in co-relation 31908. Up to 4804 conditions per place. [2024-06-28 01:41:16,153 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 155 selfloop transitions, 78 changer transitions 0/243 dead transitions. [2024-06-28 01:41:16,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 243 transitions, 2579 flow [2024-06-28 01:41:16,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-06-28 01:41:16,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5597826086956522 [2024-06-28 01:41:16,155 INFO L175 Difference]: Start difference. First operand has 127 places, 180 transitions, 1791 flow. Second operand 8 states and 206 transitions. [2024-06-28 01:41:16,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 243 transitions, 2579 flow [2024-06-28 01:41:16,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 243 transitions, 2497 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:16,260 INFO L231 Difference]: Finished difference. Result has 134 places, 189 transitions, 2044 flow [2024-06-28 01:41:16,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2044, PETRI_PLACES=134, PETRI_TRANSITIONS=189} [2024-06-28 01:41:16,261 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 82 predicate places. [2024-06-28 01:41:16,261 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 189 transitions, 2044 flow [2024-06-28 01:41:16,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:16,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:16,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:16,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:41:16,262 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:16,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:16,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1618117503, now seen corresponding path program 1 times [2024-06-28 01:41:16,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:16,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032201450] [2024-06-28 01:41:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:16,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:16,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:16,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032201450] [2024-06-28 01:41:16,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032201450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:16,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:16,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:16,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034686047] [2024-06-28 01:41:16,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:16,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:16,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:16,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:16,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:16,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:16,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 189 transitions, 2044 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:16,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:16,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:16,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:17,760 INFO L124 PetriNetUnfolderBase]: 4093/6918 cut-off events. [2024-06-28 01:41:17,760 INFO L125 PetriNetUnfolderBase]: For 65945/65959 co-relation queries the response was YES. [2024-06-28 01:41:17,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33435 conditions, 6918 events. 4093/6918 cut-off events. For 65945/65959 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 46727 event pairs, 1267 based on Foata normal form. 15/6756 useless extension candidates. Maximal degree in co-relation 33377. Up to 5931 conditions per place. [2024-06-28 01:41:17,817 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 194 selfloop transitions, 18 changer transitions 0/222 dead transitions. [2024-06-28 01:41:17,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 222 transitions, 2626 flow [2024-06-28 01:41:17,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:17,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-28 01:41:17,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062111801242236 [2024-06-28 01:41:17,820 INFO L175 Difference]: Start difference. First operand has 134 places, 189 transitions, 2044 flow. Second operand 7 states and 163 transitions. [2024-06-28 01:41:17,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 222 transitions, 2626 flow [2024-06-28 01:41:17,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 222 transitions, 2536 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:17,928 INFO L231 Difference]: Finished difference. Result has 137 places, 192 transitions, 2046 flow [2024-06-28 01:41:17,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2046, PETRI_PLACES=137, PETRI_TRANSITIONS=192} [2024-06-28 01:41:17,936 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 85 predicate places. [2024-06-28 01:41:17,936 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 192 transitions, 2046 flow [2024-06-28 01:41:17,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:17,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:17,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:17,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:41:17,936 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:17,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:17,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1618117100, now seen corresponding path program 2 times [2024-06-28 01:41:17,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:17,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104406272] [2024-06-28 01:41:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:17,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:18,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:18,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104406272] [2024-06-28 01:41:18,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104406272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:18,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:18,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:18,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728361969] [2024-06-28 01:41:18,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:18,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:18,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:18,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:18,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:18,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:18,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 192 transitions, 2046 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:18,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:18,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:18,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:19,590 INFO L124 PetriNetUnfolderBase]: 4366/7372 cut-off events. [2024-06-28 01:41:19,590 INFO L125 PetriNetUnfolderBase]: For 73400/73406 co-relation queries the response was YES. [2024-06-28 01:41:19,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35619 conditions, 7372 events. 4366/7372 cut-off events. For 73400/73406 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 50259 event pairs, 1296 based on Foata normal form. 9/7193 useless extension candidates. Maximal degree in co-relation 35561. Up to 5938 conditions per place. [2024-06-28 01:41:19,661 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 189 selfloop transitions, 55 changer transitions 0/254 dead transitions. [2024-06-28 01:41:19,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 254 transitions, 3063 flow [2024-06-28 01:41:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-06-28 01:41:19,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-06-28 01:41:19,663 INFO L175 Difference]: Start difference. First operand has 137 places, 192 transitions, 2046 flow. Second operand 8 states and 188 transitions. [2024-06-28 01:41:19,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 254 transitions, 3063 flow [2024-06-28 01:41:19,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 254 transitions, 2976 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:19,790 INFO L231 Difference]: Finished difference. Result has 143 places, 218 transitions, 2429 flow [2024-06-28 01:41:19,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2429, PETRI_PLACES=143, PETRI_TRANSITIONS=218} [2024-06-28 01:41:19,792 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 91 predicate places. [2024-06-28 01:41:19,792 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 218 transitions, 2429 flow [2024-06-28 01:41:19,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:19,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:19,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:19,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:41:19,793 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:19,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:19,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1743929692, now seen corresponding path program 3 times [2024-06-28 01:41:19,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:19,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955581118] [2024-06-28 01:41:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:19,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:20,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955581118] [2024-06-28 01:41:20,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955581118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:20,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:20,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:20,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426799467] [2024-06-28 01:41:20,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:20,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:20,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:20,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:20,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:20,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:20,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 218 transitions, 2429 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:20,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:20,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:20,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:21,754 INFO L124 PetriNetUnfolderBase]: 4704/7906 cut-off events. [2024-06-28 01:41:21,755 INFO L125 PetriNetUnfolderBase]: For 87910/87916 co-relation queries the response was YES. [2024-06-28 01:41:21,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40371 conditions, 7906 events. 4704/7906 cut-off events. For 87910/87916 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 54120 event pairs, 1435 based on Foata normal form. 9/7718 useless extension candidates. Maximal degree in co-relation 40309. Up to 6276 conditions per place. [2024-06-28 01:41:21,824 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 200 selfloop transitions, 76 changer transitions 0/286 dead transitions. [2024-06-28 01:41:21,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 286 transitions, 3538 flow [2024-06-28 01:41:21,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:21,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:41:21,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-06-28 01:41:21,825 INFO L175 Difference]: Start difference. First operand has 143 places, 218 transitions, 2429 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:41:21,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 286 transitions, 3538 flow [2024-06-28 01:41:22,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 286 transitions, 3438 flow, removed 49 selfloop flow, removed 1 redundant places. [2024-06-28 01:41:22,006 INFO L231 Difference]: Finished difference. Result has 152 places, 247 transitions, 2919 flow [2024-06-28 01:41:22,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2919, PETRI_PLACES=152, PETRI_TRANSITIONS=247} [2024-06-28 01:41:22,007 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-06-28 01:41:22,007 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 247 transitions, 2919 flow [2024-06-28 01:41:22,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:22,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:22,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:22,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:41:22,008 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:22,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash 335158203, now seen corresponding path program 2 times [2024-06-28 01:41:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:22,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044896570] [2024-06-28 01:41:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:22,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:22,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:22,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044896570] [2024-06-28 01:41:22,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044896570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:22,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:22,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:22,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444215367] [2024-06-28 01:41:22,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:22,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:22,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:22,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:22,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:22,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:22,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 247 transitions, 2919 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:22,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:22,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:22,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:24,167 INFO L124 PetriNetUnfolderBase]: 4684/8027 cut-off events. [2024-06-28 01:41:24,167 INFO L125 PetriNetUnfolderBase]: For 99207/99213 co-relation queries the response was YES. [2024-06-28 01:41:24,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42072 conditions, 8027 events. 4684/8027 cut-off events. For 99207/99213 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 55650 event pairs, 875 based on Foata normal form. 13/7809 useless extension candidates. Maximal degree in co-relation 42005. Up to 4724 conditions per place. [2024-06-28 01:41:24,248 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 196 selfloop transitions, 85 changer transitions 0/291 dead transitions. [2024-06-28 01:41:24,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 291 transitions, 3671 flow [2024-06-28 01:41:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:24,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-28 01:41:24,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683229813664596 [2024-06-28 01:41:24,251 INFO L175 Difference]: Start difference. First operand has 152 places, 247 transitions, 2919 flow. Second operand 7 states and 183 transitions. [2024-06-28 01:41:24,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 291 transitions, 3671 flow [2024-06-28 01:41:24,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 291 transitions, 3606 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:24,579 INFO L231 Difference]: Finished difference. Result has 157 places, 247 transitions, 3033 flow [2024-06-28 01:41:24,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2854, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3033, PETRI_PLACES=157, PETRI_TRANSITIONS=247} [2024-06-28 01:41:24,580 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 105 predicate places. [2024-06-28 01:41:24,580 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 247 transitions, 3033 flow [2024-06-28 01:41:24,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:24,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:24,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:24,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:41:24,581 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:24,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:24,581 INFO L85 PathProgramCache]: Analyzing trace with hash 344354973, now seen corresponding path program 3 times [2024-06-28 01:41:24,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:24,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147248667] [2024-06-28 01:41:24,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:24,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:25,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:25,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147248667] [2024-06-28 01:41:25,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147248667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:25,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:25,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:25,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650905009] [2024-06-28 01:41:25,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:25,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:25,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:25,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:25,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:25,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:25,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 247 transitions, 3033 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:25,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:25,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:25,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:26,788 INFO L124 PetriNetUnfolderBase]: 4664/7918 cut-off events. [2024-06-28 01:41:26,789 INFO L125 PetriNetUnfolderBase]: For 102115/102121 co-relation queries the response was YES. [2024-06-28 01:41:26,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42390 conditions, 7918 events. 4664/7918 cut-off events. For 102115/102121 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 54086 event pairs, 731 based on Foata normal form. 13/7716 useless extension candidates. Maximal degree in co-relation 42321. Up to 4486 conditions per place. [2024-06-28 01:41:26,854 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 195 selfloop transitions, 81 changer transitions 0/286 dead transitions. [2024-06-28 01:41:26,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 286 transitions, 3729 flow [2024-06-28 01:41:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:26,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-28 01:41:26,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2024-06-28 01:41:26,856 INFO L175 Difference]: Start difference. First operand has 157 places, 247 transitions, 3033 flow. Second operand 7 states and 175 transitions. [2024-06-28 01:41:26,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 286 transitions, 3729 flow [2024-06-28 01:41:27,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 286 transitions, 3516 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:27,023 INFO L231 Difference]: Finished difference. Result has 157 places, 246 transitions, 2954 flow [2024-06-28 01:41:27,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2788, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2954, PETRI_PLACES=157, PETRI_TRANSITIONS=246} [2024-06-28 01:41:27,024 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 105 predicate places. [2024-06-28 01:41:27,024 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 246 transitions, 2954 flow [2024-06-28 01:41:27,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:27,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:27,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:27,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:41:27,025 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:27,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:27,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1111306167, now seen corresponding path program 2 times [2024-06-28 01:41:27,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:27,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796009194] [2024-06-28 01:41:27,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:27,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:27,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:27,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796009194] [2024-06-28 01:41:27,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796009194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:27,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:27,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:27,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977327215] [2024-06-28 01:41:27,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:27,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:27,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:27,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:27,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:27,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:27,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 246 transitions, 2954 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:27,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:27,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:27,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:29,051 INFO L124 PetriNetUnfolderBase]: 4681/8139 cut-off events. [2024-06-28 01:41:29,051 INFO L125 PetriNetUnfolderBase]: For 100229/100231 co-relation queries the response was YES. [2024-06-28 01:41:29,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42500 conditions, 8139 events. 4681/8139 cut-off events. For 100229/100231 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 57594 event pairs, 1971 based on Foata normal form. 1/7883 useless extension candidates. Maximal degree in co-relation 42430. Up to 6737 conditions per place. [2024-06-28 01:41:29,140 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 246 selfloop transitions, 16 changer transitions 0/272 dead transitions. [2024-06-28 01:41:29,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 272 transitions, 3626 flow [2024-06-28 01:41:29,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 01:41:29,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48757763975155277 [2024-06-28 01:41:29,142 INFO L175 Difference]: Start difference. First operand has 157 places, 246 transitions, 2954 flow. Second operand 7 states and 157 transitions. [2024-06-28 01:41:29,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 272 transitions, 3626 flow [2024-06-28 01:41:29,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 272 transitions, 3408 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:29,351 INFO L231 Difference]: Finished difference. Result has 158 places, 249 transitions, 2838 flow [2024-06-28 01:41:29,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2736, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2838, PETRI_PLACES=158, PETRI_TRANSITIONS=249} [2024-06-28 01:41:29,354 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 106 predicate places. [2024-06-28 01:41:29,354 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 249 transitions, 2838 flow [2024-06-28 01:41:29,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:29,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:29,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:29,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:41:29,355 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:29,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:29,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1110860697, now seen corresponding path program 3 times [2024-06-28 01:41:29,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:29,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350128509] [2024-06-28 01:41:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:29,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:29,984 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 01:41:29,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:29,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350128509] [2024-06-28 01:41:29,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350128509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:29,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:29,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:29,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448175232] [2024-06-28 01:41:29,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:29,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:29,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:29,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:29,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:30,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:30,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 249 transitions, 2838 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:30,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:30,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:30,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:31,110 INFO L124 PetriNetUnfolderBase]: 4683/8146 cut-off events. [2024-06-28 01:41:31,110 INFO L125 PetriNetUnfolderBase]: For 99217/99259 co-relation queries the response was YES. [2024-06-28 01:41:31,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41497 conditions, 8146 events. 4683/8146 cut-off events. For 99217/99259 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 57504 event pairs, 1270 based on Foata normal form. 35/7915 useless extension candidates. Maximal degree in co-relation 41427. Up to 6638 conditions per place. [2024-06-28 01:41:31,185 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 233 selfloop transitions, 35 changer transitions 0/278 dead transitions. [2024-06-28 01:41:31,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 278 transitions, 3559 flow [2024-06-28 01:41:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:31,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:31,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 161 transitions. [2024-06-28 01:41:31,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:41:31,186 INFO L175 Difference]: Start difference. First operand has 158 places, 249 transitions, 2838 flow. Second operand 7 states and 161 transitions. [2024-06-28 01:41:31,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 278 transitions, 3559 flow [2024-06-28 01:41:31,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 278 transitions, 3467 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:31,372 INFO L231 Difference]: Finished difference. Result has 160 places, 252 transitions, 2892 flow [2024-06-28 01:41:31,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2746, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2892, PETRI_PLACES=160, PETRI_TRANSITIONS=252} [2024-06-28 01:41:31,373 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 108 predicate places. [2024-06-28 01:41:31,373 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 252 transitions, 2892 flow [2024-06-28 01:41:31,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:31,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:31,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:31,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:41:31,374 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:31,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1973302700, now seen corresponding path program 4 times [2024-06-28 01:41:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:31,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063041416] [2024-06-28 01:41:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:31,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:31,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063041416] [2024-06-28 01:41:31,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063041416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:31,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:31,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:31,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785431557] [2024-06-28 01:41:31,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:31,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:31,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:31,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:31,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:32,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:32,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 252 transitions, 2892 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:32,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:32,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:32,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:33,149 INFO L124 PetriNetUnfolderBase]: 4773/8275 cut-off events. [2024-06-28 01:41:33,149 INFO L125 PetriNetUnfolderBase]: For 108844/108850 co-relation queries the response was YES. [2024-06-28 01:41:33,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42953 conditions, 8275 events. 4773/8275 cut-off events. For 108844/108850 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 58377 event pairs, 1312 based on Foata normal form. 7/8011 useless extension candidates. Maximal degree in co-relation 42882. Up to 6035 conditions per place. [2024-06-28 01:41:33,226 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 192 selfloop transitions, 91 changer transitions 0/293 dead transitions. [2024-06-28 01:41:33,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 293 transitions, 3844 flow [2024-06-28 01:41:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:33,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:41:33,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531055900621118 [2024-06-28 01:41:33,227 INFO L175 Difference]: Start difference. First operand has 160 places, 252 transitions, 2892 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:41:33,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 293 transitions, 3844 flow [2024-06-28 01:41:33,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 293 transitions, 3720 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:33,415 INFO L231 Difference]: Finished difference. Result has 164 places, 265 transitions, 3197 flow [2024-06-28 01:41:33,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2768, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3197, PETRI_PLACES=164, PETRI_TRANSITIONS=265} [2024-06-28 01:41:33,416 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 112 predicate places. [2024-06-28 01:41:33,416 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 265 transitions, 3197 flow [2024-06-28 01:41:33,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:33,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:33,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:33,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:41:33,417 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:33,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:33,417 INFO L85 PathProgramCache]: Analyzing trace with hash 178901986, now seen corresponding path program 1 times [2024-06-28 01:41:33,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:33,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112785519] [2024-06-28 01:41:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:33,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:34,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:34,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112785519] [2024-06-28 01:41:34,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112785519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:34,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:34,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:34,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822867117] [2024-06-28 01:41:34,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:34,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:34,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:34,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:34,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:34,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-06-28 01:41:34,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 265 transitions, 3197 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:34,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:34,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-06-28 01:41:34,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:35,266 INFO L124 PetriNetUnfolderBase]: 4595/7981 cut-off events. [2024-06-28 01:41:35,267 INFO L125 PetriNetUnfolderBase]: For 138426/138755 co-relation queries the response was YES. [2024-06-28 01:41:35,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44485 conditions, 7981 events. 4595/7981 cut-off events. For 138426/138755 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 57340 event pairs, 1849 based on Foata normal form. 38/7706 useless extension candidates. Maximal degree in co-relation 44411. Up to 6427 conditions per place. [2024-06-28 01:41:35,347 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 250 selfloop transitions, 18 changer transitions 0/297 dead transitions. [2024-06-28 01:41:35,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 297 transitions, 3908 flow [2024-06-28 01:41:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:35,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:41:35,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-28 01:41:35,349 INFO L175 Difference]: Start difference. First operand has 164 places, 265 transitions, 3197 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:41:35,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 297 transitions, 3908 flow [2024-06-28 01:41:35,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 297 transitions, 3763 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:35,568 INFO L231 Difference]: Finished difference. Result has 170 places, 272 transitions, 3206 flow [2024-06-28 01:41:35,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3206, PETRI_PLACES=170, PETRI_TRANSITIONS=272} [2024-06-28 01:41:35,568 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 118 predicate places. [2024-06-28 01:41:35,569 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 272 transitions, 3206 flow [2024-06-28 01:41:35,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:35,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:35,569 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 01:41:35,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:41:35,569 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:35,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:35,570 INFO L85 PathProgramCache]: Analyzing trace with hash 393719209, now seen corresponding path program 1 times [2024-06-28 01:41:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:35,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19429227] [2024-06-28 01:41:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:35,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:36,371 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 01:41:36,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:36,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19429227] [2024-06-28 01:41:36,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19429227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:36,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:36,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:36,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940552600] [2024-06-28 01:41:36,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:36,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:36,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:36,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:36,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:36,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:36,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 272 transitions, 3206 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:36,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:36,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:36,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:37,825 INFO L124 PetriNetUnfolderBase]: 4949/8316 cut-off events. [2024-06-28 01:41:37,825 INFO L125 PetriNetUnfolderBase]: For 124652/124660 co-relation queries the response was YES. [2024-06-28 01:41:37,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46083 conditions, 8316 events. 4949/8316 cut-off events. For 124652/124660 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 57418 event pairs, 1457 based on Foata normal form. 11/8116 useless extension candidates. Maximal degree in co-relation 46006. Up to 6346 conditions per place. [2024-06-28 01:41:37,907 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 240 selfloop transitions, 80 changer transitions 0/330 dead transitions. [2024-06-28 01:41:37,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 330 transitions, 4355 flow [2024-06-28 01:41:37,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:37,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 01:41:37,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-28 01:41:37,909 INFO L175 Difference]: Start difference. First operand has 170 places, 272 transitions, 3206 flow. Second operand 9 states and 222 transitions. [2024-06-28 01:41:37,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 330 transitions, 4355 flow [2024-06-28 01:41:38,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 330 transitions, 4284 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:38,184 INFO L231 Difference]: Finished difference. Result has 176 places, 282 transitions, 3478 flow [2024-06-28 01:41:38,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3135, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3478, PETRI_PLACES=176, PETRI_TRANSITIONS=282} [2024-06-28 01:41:38,186 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 124 predicate places. [2024-06-28 01:41:38,186 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 282 transitions, 3478 flow [2024-06-28 01:41:38,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:38,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:38,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:38,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:41:38,187 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:38,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1111322039, now seen corresponding path program 1 times [2024-06-28 01:41:38,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:38,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105251349] [2024-06-28 01:41:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:38,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:39,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:39,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105251349] [2024-06-28 01:41:39,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105251349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:39,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:39,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:39,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896740491] [2024-06-28 01:41:39,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:39,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:39,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:39,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:39,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:39,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:39,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 282 transitions, 3478 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:39,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:39,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:39,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:40,401 INFO L124 PetriNetUnfolderBase]: 4944/8572 cut-off events. [2024-06-28 01:41:40,402 INFO L125 PetriNetUnfolderBase]: For 141716/141718 co-relation queries the response was YES. [2024-06-28 01:41:40,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48001 conditions, 8572 events. 4944/8572 cut-off events. For 141716/141718 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 60950 event pairs, 2041 based on Foata normal form. 2/8308 useless extension candidates. Maximal degree in co-relation 47922. Up to 7063 conditions per place. [2024-06-28 01:41:40,490 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 278 selfloop transitions, 26 changer transitions 0/314 dead transitions. [2024-06-28 01:41:40,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 314 transitions, 4262 flow [2024-06-28 01:41:40,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:40,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:40,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 01:41:40,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641304347826086 [2024-06-28 01:41:40,492 INFO L175 Difference]: Start difference. First operand has 176 places, 282 transitions, 3478 flow. Second operand 8 states and 179 transitions. [2024-06-28 01:41:40,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 314 transitions, 4262 flow [2024-06-28 01:41:40,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 314 transitions, 4095 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:40,781 INFO L231 Difference]: Finished difference. Result has 179 places, 284 transitions, 3424 flow [2024-06-28 01:41:40,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3311, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3424, PETRI_PLACES=179, PETRI_TRANSITIONS=284} [2024-06-28 01:41:40,782 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 127 predicate places. [2024-06-28 01:41:40,782 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 284 transitions, 3424 flow [2024-06-28 01:41:40,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:40,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:40,782 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 01:41:40,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:41:40,782 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:40,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1832627883, now seen corresponding path program 2 times [2024-06-28 01:41:40,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:40,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119605276] [2024-06-28 01:41:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:40,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:41,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:41,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:41,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119605276] [2024-06-28 01:41:41,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119605276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:41,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:41,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:41,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846949574] [2024-06-28 01:41:41,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:41,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:41,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:41,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:41,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:41,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:41,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 284 transitions, 3424 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:41,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:41,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:41,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:42,897 INFO L124 PetriNetUnfolderBase]: 5158/8683 cut-off events. [2024-06-28 01:41:42,897 INFO L125 PetriNetUnfolderBase]: For 144133/144159 co-relation queries the response was YES. [2024-06-28 01:41:42,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50077 conditions, 8683 events. 5158/8683 cut-off events. For 144133/144159 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 60456 event pairs, 1513 based on Foata normal form. 29/8488 useless extension candidates. Maximal degree in co-relation 49996. Up to 7038 conditions per place. [2024-06-28 01:41:42,982 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 262 selfloop transitions, 78 changer transitions 0/350 dead transitions. [2024-06-28 01:41:42,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 350 transitions, 4604 flow [2024-06-28 01:41:42,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:41:42,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533816425120773 [2024-06-28 01:41:42,997 INFO L175 Difference]: Start difference. First operand has 179 places, 284 transitions, 3424 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:41:42,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 350 transitions, 4604 flow [2024-06-28 01:41:43,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 350 transitions, 4507 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:43,339 INFO L231 Difference]: Finished difference. Result has 184 places, 309 transitions, 3906 flow [2024-06-28 01:41:43,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3906, PETRI_PLACES=184, PETRI_TRANSITIONS=309} [2024-06-28 01:41:43,340 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 132 predicate places. [2024-06-28 01:41:43,340 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 309 transitions, 3906 flow [2024-06-28 01:41:43,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:43,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:43,341 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 01:41:43,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:41:43,341 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:43,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:43,341 INFO L85 PathProgramCache]: Analyzing trace with hash -447667601, now seen corresponding path program 3 times [2024-06-28 01:41:43,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:43,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055937765] [2024-06-28 01:41:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:43,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:44,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:44,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055937765] [2024-06-28 01:41:44,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055937765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:44,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:44,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:41:44,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817369903] [2024-06-28 01:41:44,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:44,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:41:44,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:41:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:41:44,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:44,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 309 transitions, 3906 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:44,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:44,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:44,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:45,590 INFO L124 PetriNetUnfolderBase]: 5336/8948 cut-off events. [2024-06-28 01:41:45,590 INFO L125 PetriNetUnfolderBase]: For 157006/157024 co-relation queries the response was YES. [2024-06-28 01:41:45,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53527 conditions, 8948 events. 5336/8948 cut-off events. For 157006/157024 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 62153 event pairs, 1548 based on Foata normal form. 21/8738 useless extension candidates. Maximal degree in co-relation 53443. Up to 7169 conditions per place. [2024-06-28 01:41:45,681 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 268 selfloop transitions, 96 changer transitions 0/374 dead transitions. [2024-06-28 01:41:45,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 374 transitions, 5264 flow [2024-06-28 01:41:45,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:45,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-28 01:41:45,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314009661835749 [2024-06-28 01:41:45,683 INFO L175 Difference]: Start difference. First operand has 184 places, 309 transitions, 3906 flow. Second operand 9 states and 220 transitions. [2024-06-28 01:41:45,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 374 transitions, 5264 flow [2024-06-28 01:41:46,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 374 transitions, 4989 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:46,056 INFO L231 Difference]: Finished difference. Result has 191 places, 335 transitions, 4422 flow [2024-06-28 01:41:46,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3717, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4422, PETRI_PLACES=191, PETRI_TRANSITIONS=335} [2024-06-28 01:41:46,057 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 139 predicate places. [2024-06-28 01:41:46,057 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 335 transitions, 4422 flow [2024-06-28 01:41:46,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:46,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:46,057 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 01:41:46,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:41:46,058 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:46,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:46,058 INFO L85 PathProgramCache]: Analyzing trace with hash -496266697, now seen corresponding path program 1 times [2024-06-28 01:41:46,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:46,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377933917] [2024-06-28 01:41:46,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:46,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:46,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:46,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377933917] [2024-06-28 01:41:46,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377933917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:46,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:46,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:46,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62833989] [2024-06-28 01:41:46,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:46,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:46,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:46,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:46,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:46,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 335 transitions, 4422 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:46,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:46,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:46,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:48,320 INFO L124 PetriNetUnfolderBase]: 5488/9213 cut-off events. [2024-06-28 01:41:48,321 INFO L125 PetriNetUnfolderBase]: For 168514/168520 co-relation queries the response was YES. [2024-06-28 01:41:48,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56134 conditions, 9213 events. 5488/9213 cut-off events. For 168514/168520 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 64322 event pairs, 1587 based on Foata normal form. 10/8976 useless extension candidates. Maximal degree in co-relation 56046. Up to 7506 conditions per place. [2024-06-28 01:41:48,432 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 287 selfloop transitions, 94 changer transitions 0/391 dead transitions. [2024-06-28 01:41:48,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 391 transitions, 5695 flow [2024-06-28 01:41:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-28 01:41:48,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5265700483091788 [2024-06-28 01:41:48,434 INFO L175 Difference]: Start difference. First operand has 191 places, 335 transitions, 4422 flow. Second operand 9 states and 218 transitions. [2024-06-28 01:41:48,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 391 transitions, 5695 flow [2024-06-28 01:41:48,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 391 transitions, 5467 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:48,919 INFO L231 Difference]: Finished difference. Result has 196 places, 356 transitions, 4812 flow [2024-06-28 01:41:48,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4214, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4812, PETRI_PLACES=196, PETRI_TRANSITIONS=356} [2024-06-28 01:41:48,920 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 144 predicate places. [2024-06-28 01:41:48,920 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 356 transitions, 4812 flow [2024-06-28 01:41:48,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:48,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:48,921 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 01:41:48,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:41:48,921 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:48,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:48,922 INFO L85 PathProgramCache]: Analyzing trace with hash -444124425, now seen corresponding path program 2 times [2024-06-28 01:41:48,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:48,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743963057] [2024-06-28 01:41:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:48,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:49,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:49,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743963057] [2024-06-28 01:41:49,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743963057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:49,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:49,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:49,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079259493] [2024-06-28 01:41:49,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:49,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:49,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:49,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:49,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:49,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:49,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 356 transitions, 4812 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:49,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:49,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:49,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:50,935 INFO L124 PetriNetUnfolderBase]: 5624/9450 cut-off events. [2024-06-28 01:41:50,935 INFO L125 PetriNetUnfolderBase]: For 180704/180710 co-relation queries the response was YES. [2024-06-28 01:41:50,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58453 conditions, 9450 events. 5624/9450 cut-off events. For 180704/180710 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 66320 event pairs, 1568 based on Foata normal form. 14/9209 useless extension candidates. Maximal degree in co-relation 58363. Up to 7610 conditions per place. [2024-06-28 01:41:51,201 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 286 selfloop transitions, 100 changer transitions 0/396 dead transitions. [2024-06-28 01:41:51,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 396 transitions, 5873 flow [2024-06-28 01:41:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:51,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:51,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:41:51,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:41:51,207 INFO L175 Difference]: Start difference. First operand has 196 places, 356 transitions, 4812 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:41:51,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 396 transitions, 5873 flow [2024-06-28 01:41:51,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 396 transitions, 5694 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:51,606 INFO L231 Difference]: Finished difference. Result has 200 places, 364 transitions, 5028 flow [2024-06-28 01:41:51,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4633, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5028, PETRI_PLACES=200, PETRI_TRANSITIONS=364} [2024-06-28 01:41:51,607 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 148 predicate places. [2024-06-28 01:41:51,607 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 364 transitions, 5028 flow [2024-06-28 01:41:51,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:51,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:51,607 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 01:41:51,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:41:51,608 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:51,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:51,608 INFO L85 PathProgramCache]: Analyzing trace with hash 365082525, now seen corresponding path program 3 times [2024-06-28 01:41:51,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:51,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538179350] [2024-06-28 01:41:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:51,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:52,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:52,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538179350] [2024-06-28 01:41:52,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538179350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:52,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:52,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:52,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584976135] [2024-06-28 01:41:52,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:52,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:52,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:52,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:52,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:52,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:52,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 364 transitions, 5028 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:52,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:52,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:52,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:53,740 INFO L124 PetriNetUnfolderBase]: 5676/9544 cut-off events. [2024-06-28 01:41:53,740 INFO L125 PetriNetUnfolderBase]: For 188321/188327 co-relation queries the response was YES. [2024-06-28 01:41:53,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59447 conditions, 9544 events. 5676/9544 cut-off events. For 188321/188327 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 67161 event pairs, 1523 based on Foata normal form. 14/9307 useless extension candidates. Maximal degree in co-relation 59356. Up to 7211 conditions per place. [2024-06-28 01:41:53,861 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 261 selfloop transitions, 132 changer transitions 0/403 dead transitions. [2024-06-28 01:41:53,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 403 transitions, 6130 flow [2024-06-28 01:41:53,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:53,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-28 01:41:53,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5353260869565217 [2024-06-28 01:41:53,862 INFO L175 Difference]: Start difference. First operand has 200 places, 364 transitions, 5028 flow. Second operand 8 states and 197 transitions. [2024-06-28 01:41:53,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 403 transitions, 6130 flow [2024-06-28 01:41:54,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 403 transitions, 5870 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:54,372 INFO L231 Difference]: Finished difference. Result has 203 places, 369 transitions, 5210 flow [2024-06-28 01:41:54,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4778, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5210, PETRI_PLACES=203, PETRI_TRANSITIONS=369} [2024-06-28 01:41:54,373 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2024-06-28 01:41:54,373 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 369 transitions, 5210 flow [2024-06-28 01:41:54,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:54,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:54,374 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 01:41:54,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:41:54,374 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:54,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:54,374 INFO L85 PathProgramCache]: Analyzing trace with hash 365091453, now seen corresponding path program 1 times [2024-06-28 01:41:54,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:54,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983453745] [2024-06-28 01:41:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:54,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:55,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:55,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983453745] [2024-06-28 01:41:55,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983453745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:55,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:55,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:55,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511294850] [2024-06-28 01:41:55,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:55,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:55,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:55,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:55,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:55,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:55,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 369 transitions, 5210 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:55,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:55,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:55,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:56,727 INFO L124 PetriNetUnfolderBase]: 5693/9615 cut-off events. [2024-06-28 01:41:56,727 INFO L125 PetriNetUnfolderBase]: For 186875/186887 co-relation queries the response was YES. [2024-06-28 01:41:56,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60380 conditions, 9615 events. 5693/9615 cut-off events. For 186875/186887 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 68063 event pairs, 1929 based on Foata normal form. 13/9362 useless extension candidates. Maximal degree in co-relation 60287. Up to 8065 conditions per place. [2024-06-28 01:41:56,844 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 370 selfloop transitions, 31 changer transitions 0/411 dead transitions. [2024-06-28 01:41:56,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 411 transitions, 6280 flow [2024-06-28 01:41:56,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:56,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-06-28 01:41:56,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:41:56,845 INFO L175 Difference]: Start difference. First operand has 203 places, 369 transitions, 5210 flow. Second operand 9 states and 207 transitions. [2024-06-28 01:41:56,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 411 transitions, 6280 flow [2024-06-28 01:41:57,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 411 transitions, 6020 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:57,276 INFO L231 Difference]: Finished difference. Result has 209 places, 375 transitions, 5150 flow [2024-06-28 01:41:57,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=4954, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5150, PETRI_PLACES=209, PETRI_TRANSITIONS=375} [2024-06-28 01:41:57,277 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 157 predicate places. [2024-06-28 01:41:57,277 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 375 transitions, 5150 flow [2024-06-28 01:41:57,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:57,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:57,277 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 01:41:57,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:41:57,277 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:41:57,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:57,278 INFO L85 PathProgramCache]: Analyzing trace with hash 365078929, now seen corresponding path program 4 times [2024-06-28 01:41:57,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:57,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024133545] [2024-06-28 01:41:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:57,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:57,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:57,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024133545] [2024-06-28 01:41:57,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024133545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:57,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:57,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:57,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767041222] [2024-06-28 01:41:57,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:57,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:57,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:57,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:57,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:57,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:41:57,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 375 transitions, 5150 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:57,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:57,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:41:57,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:59,448 INFO L124 PetriNetUnfolderBase]: 5728/9633 cut-off events. [2024-06-28 01:41:59,449 INFO L125 PetriNetUnfolderBase]: For 188799/188805 co-relation queries the response was YES. [2024-06-28 01:41:59,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60058 conditions, 9633 events. 5728/9633 cut-off events. For 188799/188805 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 67896 event pairs, 1525 based on Foata normal form. 9/9382 useless extension candidates. Maximal degree in co-relation 59962. Up to 6772 conditions per place. [2024-06-28 01:41:59,571 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 264 selfloop transitions, 145 changer transitions 0/419 dead transitions. [2024-06-28 01:41:59,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 419 transitions, 6321 flow [2024-06-28 01:41:59,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:59,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 01:41:59,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-28 01:41:59,573 INFO L175 Difference]: Start difference. First operand has 209 places, 375 transitions, 5150 flow. Second operand 9 states and 222 transitions. [2024-06-28 01:41:59,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 419 transitions, 6321 flow [2024-06-28 01:42:00,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 419 transitions, 6205 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:00,034 INFO L231 Difference]: Finished difference. Result has 214 places, 379 transitions, 5427 flow [2024-06-28 01:42:00,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5034, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5427, PETRI_PLACES=214, PETRI_TRANSITIONS=379} [2024-06-28 01:42:00,034 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 162 predicate places. [2024-06-28 01:42:00,034 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 379 transitions, 5427 flow [2024-06-28 01:42:00,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:00,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:00,035 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 01:42:00,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:42:00,035 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:00,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1476791101, now seen corresponding path program 5 times [2024-06-28 01:42:00,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:00,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885685138] [2024-06-28 01:42:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:00,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:00,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885685138] [2024-06-28 01:42:00,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885685138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:00,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:00,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:00,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195554962] [2024-06-28 01:42:00,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:00,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:00,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:00,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:00,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:00,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:00,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 379 transitions, 5427 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:00,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:00,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:00,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:02,288 INFO L124 PetriNetUnfolderBase]: 5779/9708 cut-off events. [2024-06-28 01:42:02,288 INFO L125 PetriNetUnfolderBase]: For 202206/202224 co-relation queries the response was YES. [2024-06-28 01:42:02,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61803 conditions, 9708 events. 5779/9708 cut-off events. For 202206/202224 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 68558 event pairs, 1673 based on Foata normal form. 21/9475 useless extension candidates. Maximal degree in co-relation 61706. Up to 7601 conditions per place. [2024-06-28 01:42:02,398 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 285 selfloop transitions, 124 changer transitions 0/419 dead transitions. [2024-06-28 01:42:02,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 419 transitions, 6503 flow [2024-06-28 01:42:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:42:02,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:42:02,420 INFO L175 Difference]: Start difference. First operand has 214 places, 379 transitions, 5427 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:42:02,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 419 transitions, 6503 flow [2024-06-28 01:42:03,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 419 transitions, 6210 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:03,050 INFO L231 Difference]: Finished difference. Result has 216 places, 383 transitions, 5505 flow [2024-06-28 01:42:03,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5134, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5505, PETRI_PLACES=216, PETRI_TRANSITIONS=383} [2024-06-28 01:42:03,052 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 164 predicate places. [2024-06-28 01:42:03,052 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 383 transitions, 5505 flow [2024-06-28 01:42:03,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:03,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:03,052 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 01:42:03,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:42:03,053 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:03,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:03,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1482185225, now seen corresponding path program 4 times [2024-06-28 01:42:03,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:03,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685530416] [2024-06-28 01:42:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:03,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:03,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685530416] [2024-06-28 01:42:03,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685530416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:03,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:03,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:03,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123876577] [2024-06-28 01:42:03,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:03,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:03,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:03,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:03,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:03,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:03,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 383 transitions, 5505 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:03,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:03,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:03,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:05,294 INFO L124 PetriNetUnfolderBase]: 5875/9863 cut-off events. [2024-06-28 01:42:05,295 INFO L125 PetriNetUnfolderBase]: For 217036/217042 co-relation queries the response was YES. [2024-06-28 01:42:05,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63544 conditions, 9863 events. 5875/9863 cut-off events. For 217036/217042 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 69840 event pairs, 1419 based on Foata normal form. 14/9613 useless extension candidates. Maximal degree in co-relation 63446. Up to 7870 conditions per place. [2024-06-28 01:42:05,402 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 303 selfloop transitions, 108 changer transitions 0/421 dead transitions. [2024-06-28 01:42:05,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 421 transitions, 6643 flow [2024-06-28 01:42:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:05,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:05,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-06-28 01:42:05,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2024-06-28 01:42:05,403 INFO L175 Difference]: Start difference. First operand has 216 places, 383 transitions, 5505 flow. Second operand 7 states and 170 transitions. [2024-06-28 01:42:05,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 421 transitions, 6643 flow [2024-06-28 01:42:06,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 421 transitions, 6393 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:06,148 INFO L231 Difference]: Finished difference. Result has 218 places, 392 transitions, 5685 flow [2024-06-28 01:42:06,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5257, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5685, PETRI_PLACES=218, PETRI_TRANSITIONS=392} [2024-06-28 01:42:06,149 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 166 predicate places. [2024-06-28 01:42:06,149 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 392 transitions, 5685 flow [2024-06-28 01:42:06,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:06,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:06,150 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 01:42:06,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:42:06,150 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:06,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:06,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1476441545, now seen corresponding path program 5 times [2024-06-28 01:42:06,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:06,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680397187] [2024-06-28 01:42:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:06,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:06,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:06,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680397187] [2024-06-28 01:42:06,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680397187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:06,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:06,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:06,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21503114] [2024-06-28 01:42:06,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:06,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:06,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:06,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:06,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:06,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:06,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 392 transitions, 5685 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:06,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:06,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:06,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:08,574 INFO L124 PetriNetUnfolderBase]: 5903/9910 cut-off events. [2024-06-28 01:42:08,574 INFO L125 PetriNetUnfolderBase]: For 220440/220446 co-relation queries the response was YES. [2024-06-28 01:42:08,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64053 conditions, 9910 events. 5903/9910 cut-off events. For 220440/220446 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 70307 event pairs, 1378 based on Foata normal form. 10/9666 useless extension candidates. Maximal degree in co-relation 63954. Up to 7277 conditions per place. [2024-06-28 01:42:08,693 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 265 selfloop transitions, 149 changer transitions 0/424 dead transitions. [2024-06-28 01:42:08,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 424 transitions, 6787 flow [2024-06-28 01:42:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:08,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-28 01:42:08,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531055900621118 [2024-06-28 01:42:08,694 INFO L175 Difference]: Start difference. First operand has 218 places, 392 transitions, 5685 flow. Second operand 7 states and 171 transitions. [2024-06-28 01:42:08,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 424 transitions, 6787 flow [2024-06-28 01:42:09,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 424 transitions, 6616 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:09,374 INFO L231 Difference]: Finished difference. Result has 222 places, 395 transitions, 5897 flow [2024-06-28 01:42:09,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5516, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5897, PETRI_PLACES=222, PETRI_TRANSITIONS=395} [2024-06-28 01:42:09,374 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 170 predicate places. [2024-06-28 01:42:09,375 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 395 transitions, 5897 flow [2024-06-28 01:42:09,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:09,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:09,375 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 01:42:09,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:42:09,375 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:09,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:09,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1393412431, now seen corresponding path program 6 times [2024-06-28 01:42:09,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:09,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611060059] [2024-06-28 01:42:09,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:09,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:10,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:10,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611060059] [2024-06-28 01:42:10,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611060059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:10,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:10,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:10,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395809570] [2024-06-28 01:42:10,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:10,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:10,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:10,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:10,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:10,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 395 transitions, 5897 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:10,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:10,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:10,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:11,971 INFO L124 PetriNetUnfolderBase]: 6058/10167 cut-off events. [2024-06-28 01:42:11,971 INFO L125 PetriNetUnfolderBase]: For 234377/234383 co-relation queries the response was YES. [2024-06-28 01:42:12,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66686 conditions, 10167 events. 6058/10167 cut-off events. For 234377/234383 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 72420 event pairs, 1364 based on Foata normal form. 9/9900 useless extension candidates. Maximal degree in co-relation 66586. Up to 6724 conditions per place. [2024-06-28 01:42:12,089 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 258 selfloop transitions, 172 changer transitions 0/440 dead transitions. [2024-06-28 01:42:12,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 440 transitions, 7315 flow [2024-06-28 01:42:12,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:12,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:12,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:42:12,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:42:12,091 INFO L175 Difference]: Start difference. First operand has 222 places, 395 transitions, 5897 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:42:12,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 440 transitions, 7315 flow [2024-06-28 01:42:12,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 440 transitions, 7088 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:12,741 INFO L231 Difference]: Finished difference. Result has 227 places, 403 transitions, 6271 flow [2024-06-28 01:42:12,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5670, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6271, PETRI_PLACES=227, PETRI_TRANSITIONS=403} [2024-06-28 01:42:12,742 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 175 predicate places. [2024-06-28 01:42:12,742 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 403 transitions, 6271 flow [2024-06-28 01:42:12,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:12,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:12,742 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 01:42:12,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:42:12,742 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:12,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:12,743 INFO L85 PathProgramCache]: Analyzing trace with hash 643358553, now seen corresponding path program 2 times [2024-06-28 01:42:12,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:12,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317493407] [2024-06-28 01:42:12,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:12,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:13,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:13,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317493407] [2024-06-28 01:42:13,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317493407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:13,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:13,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:13,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738364967] [2024-06-28 01:42:13,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:13,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:13,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:13,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:13,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:13,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 403 transitions, 6271 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:13,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:13,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:13,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:15,514 INFO L124 PetriNetUnfolderBase]: 6085/10258 cut-off events. [2024-06-28 01:42:15,515 INFO L125 PetriNetUnfolderBase]: For 261531/261543 co-relation queries the response was YES. [2024-06-28 01:42:15,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69208 conditions, 10258 events. 6085/10258 cut-off events. For 261531/261543 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 73380 event pairs, 1923 based on Foata normal form. 13/9992 useless extension candidates. Maximal degree in co-relation 69106. Up to 8547 conditions per place. [2024-06-28 01:42:15,649 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 388 selfloop transitions, 47 changer transitions 0/445 dead transitions. [2024-06-28 01:42:15,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 445 transitions, 7575 flow [2024-06-28 01:42:15,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:15,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:15,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 01:42:15,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027173913043478 [2024-06-28 01:42:15,650 INFO L175 Difference]: Start difference. First operand has 227 places, 403 transitions, 6271 flow. Second operand 8 states and 185 transitions. [2024-06-28 01:42:15,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 445 transitions, 7575 flow [2024-06-28 01:42:16,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 445 transitions, 7290 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:16,614 INFO L231 Difference]: Finished difference. Result has 233 places, 412 transitions, 6412 flow [2024-06-28 01:42:16,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6000, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6412, PETRI_PLACES=233, PETRI_TRANSITIONS=412} [2024-06-28 01:42:16,615 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 181 predicate places. [2024-06-28 01:42:16,615 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 412 transitions, 6412 flow [2024-06-28 01:42:16,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:16,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:16,616 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 01:42:16,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:42:16,616 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:16,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:16,616 INFO L85 PathProgramCache]: Analyzing trace with hash -415655207, now seen corresponding path program 7 times [2024-06-28 01:42:16,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:16,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183836928] [2024-06-28 01:42:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:16,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:17,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:17,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183836928] [2024-06-28 01:42:17,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183836928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:17,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:17,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:17,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770346427] [2024-06-28 01:42:17,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:17,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:17,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:17,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:17,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:17,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:17,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 412 transitions, 6412 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:17,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:17,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:17,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:19,207 INFO L124 PetriNetUnfolderBase]: 6120/10264 cut-off events. [2024-06-28 01:42:19,207 INFO L125 PetriNetUnfolderBase]: For 247282/247288 co-relation queries the response was YES. [2024-06-28 01:42:19,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68912 conditions, 10264 events. 6120/10264 cut-off events. For 247282/247288 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 73094 event pairs, 1424 based on Foata normal form. 9/10009 useless extension candidates. Maximal degree in co-relation 68806. Up to 6794 conditions per place. [2024-06-28 01:42:19,342 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 268 selfloop transitions, 173 changer transitions 0/451 dead transitions. [2024-06-28 01:42:19,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 451 transitions, 7647 flow [2024-06-28 01:42:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-28 01:42:19,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:42:19,343 INFO L175 Difference]: Start difference. First operand has 233 places, 412 transitions, 6412 flow. Second operand 8 states and 196 transitions. [2024-06-28 01:42:19,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 451 transitions, 7647 flow [2024-06-28 01:42:20,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 451 transitions, 7402 flow, removed 110 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:20,384 INFO L231 Difference]: Finished difference. Result has 238 places, 416 transitions, 6627 flow [2024-06-28 01:42:20,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6167, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6627, PETRI_PLACES=238, PETRI_TRANSITIONS=416} [2024-06-28 01:42:20,385 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 186 predicate places. [2024-06-28 01:42:20,385 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 416 transitions, 6627 flow [2024-06-28 01:42:20,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:20,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:20,385 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 01:42:20,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:42:20,386 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:20,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1243278231, now seen corresponding path program 6 times [2024-06-28 01:42:20,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:20,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060096120] [2024-06-28 01:42:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:20,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:20,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:20,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:20,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060096120] [2024-06-28 01:42:20,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060096120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:20,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:20,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:20,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046180102] [2024-06-28 01:42:20,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:20,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:20,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:20,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:20,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:20,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:20,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 416 transitions, 6627 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:20,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:20,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:20,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:22,775 INFO L124 PetriNetUnfolderBase]: 6092/10213 cut-off events. [2024-06-28 01:42:22,775 INFO L125 PetriNetUnfolderBase]: For 256466/256466 co-relation queries the response was YES. [2024-06-28 01:42:22,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69932 conditions, 10213 events. 6092/10213 cut-off events. For 256466/256466 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 72598 event pairs, 1513 based on Foata normal form. 4/9940 useless extension candidates. Maximal degree in co-relation 69824. Up to 8347 conditions per place. [2024-06-28 01:42:22,930 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 342 selfloop transitions, 91 changer transitions 0/443 dead transitions. [2024-06-28 01:42:22,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 443 transitions, 7635 flow [2024-06-28 01:42:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:22,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-28 01:42:22,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186335403726708 [2024-06-28 01:42:22,934 INFO L175 Difference]: Start difference. First operand has 238 places, 416 transitions, 6627 flow. Second operand 7 states and 167 transitions. [2024-06-28 01:42:22,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 443 transitions, 7635 flow [2024-06-28 01:42:24,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 443 transitions, 7290 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:24,010 INFO L231 Difference]: Finished difference. Result has 240 places, 416 transitions, 6474 flow [2024-06-28 01:42:24,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6282, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6474, PETRI_PLACES=240, PETRI_TRANSITIONS=416} [2024-06-28 01:42:24,011 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 188 predicate places. [2024-06-28 01:42:24,011 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 416 transitions, 6474 flow [2024-06-28 01:42:24,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:24,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:24,011 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 01:42:24,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:42:24,012 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:24,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:24,012 INFO L85 PathProgramCache]: Analyzing trace with hash -176148329, now seen corresponding path program 7 times [2024-06-28 01:42:24,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:24,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201268596] [2024-06-28 01:42:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:24,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:24,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:24,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201268596] [2024-06-28 01:42:24,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201268596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:24,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:24,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:24,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182605985] [2024-06-28 01:42:24,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:24,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:24,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:24,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:24,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:24,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:24,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 416 transitions, 6474 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:24,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:24,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:24,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:26,646 INFO L124 PetriNetUnfolderBase]: 6126/10279 cut-off events. [2024-06-28 01:42:26,646 INFO L125 PetriNetUnfolderBase]: For 249882/249882 co-relation queries the response was YES. [2024-06-28 01:42:26,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68919 conditions, 10279 events. 6126/10279 cut-off events. For 249882/249882 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 73231 event pairs, 1439 based on Foata normal form. 2/10004 useless extension candidates. Maximal degree in co-relation 68810. Up to 8121 conditions per place. [2024-06-28 01:42:26,811 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 316 selfloop transitions, 120 changer transitions 0/446 dead transitions. [2024-06-28 01:42:26,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 446 transitions, 7537 flow [2024-06-28 01:42:26,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 01:42:26,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-06-28 01:42:26,812 INFO L175 Difference]: Start difference. First operand has 240 places, 416 transitions, 6474 flow. Second operand 7 states and 168 transitions. [2024-06-28 01:42:26,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 446 transitions, 7537 flow [2024-06-28 01:42:27,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 446 transitions, 7093 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 01:42:27,748 INFO L231 Difference]: Finished difference. Result has 240 places, 420 transitions, 6387 flow [2024-06-28 01:42:27,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6030, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6387, PETRI_PLACES=240, PETRI_TRANSITIONS=420} [2024-06-28 01:42:27,749 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 188 predicate places. [2024-06-28 01:42:27,749 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 420 transitions, 6387 flow [2024-06-28 01:42:27,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:27,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:27,750 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 01:42:27,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:42:27,750 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:27,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:27,750 INFO L85 PathProgramCache]: Analyzing trace with hash 82650045, now seen corresponding path program 8 times [2024-06-28 01:42:27,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:27,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321541196] [2024-06-28 01:42:27,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:27,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:28,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:28,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321541196] [2024-06-28 01:42:28,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321541196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:28,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:28,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:42:28,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650676191] [2024-06-28 01:42:28,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:28,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:42:28,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:28,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:42:28,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:42:28,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:28,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 420 transitions, 6387 flow. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:28,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:28,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:28,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:30,386 INFO L124 PetriNetUnfolderBase]: 6160/10522 cut-off events. [2024-06-28 01:42:30,386 INFO L125 PetriNetUnfolderBase]: For 250095/250101 co-relation queries the response was YES. [2024-06-28 01:42:30,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70045 conditions, 10522 events. 6160/10522 cut-off events. For 250095/250101 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 75974 event pairs, 1370 based on Foata normal form. 8/10209 useless extension candidates. Maximal degree in co-relation 69934. Up to 7402 conditions per place. [2024-06-28 01:42:30,536 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 272 selfloop transitions, 168 changer transitions 0/450 dead transitions. [2024-06-28 01:42:30,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 450 transitions, 7543 flow [2024-06-28 01:42:30,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:42:30,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-28 01:42:30,538 INFO L175 Difference]: Start difference. First operand has 240 places, 420 transitions, 6387 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:42:30,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 450 transitions, 7543 flow [2024-06-28 01:42:31,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 450 transitions, 7295 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:31,402 INFO L231 Difference]: Finished difference. Result has 242 places, 423 transitions, 6533 flow [2024-06-28 01:42:31,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6141, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6533, PETRI_PLACES=242, PETRI_TRANSITIONS=423} [2024-06-28 01:42:31,403 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 190 predicate places. [2024-06-28 01:42:31,403 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 423 transitions, 6533 flow [2024-06-28 01:42:31,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:31,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:31,403 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 01:42:31,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:42:31,404 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:31,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:31,404 INFO L85 PathProgramCache]: Analyzing trace with hash 82442655, now seen corresponding path program 9 times [2024-06-28 01:42:31,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:31,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086382277] [2024-06-28 01:42:31,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:31,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:31,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:32,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:32,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:32,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086382277] [2024-06-28 01:42:32,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086382277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:32,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:32,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:32,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173822955] [2024-06-28 01:42:32,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:32,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:32,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:32,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:32,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:32,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:32,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 423 transitions, 6533 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:32,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:32,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:32,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:33,790 INFO L124 PetriNetUnfolderBase]: 6144/10522 cut-off events. [2024-06-28 01:42:33,790 INFO L125 PetriNetUnfolderBase]: For 253688/253694 co-relation queries the response was YES. [2024-06-28 01:42:33,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70171 conditions, 10522 events. 6144/10522 cut-off events. For 253688/253694 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 76209 event pairs, 1370 based on Foata normal form. 10/10203 useless extension candidates. Maximal degree in co-relation 70060. Up to 7389 conditions per place. [2024-06-28 01:42:33,963 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 283 selfloop transitions, 156 changer transitions 0/449 dead transitions. [2024-06-28 01:42:33,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 449 transitions, 7551 flow [2024-06-28 01:42:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:42:33,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:42:33,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-28 01:42:33,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5248447204968945 [2024-06-28 01:42:33,964 INFO L175 Difference]: Start difference. First operand has 242 places, 423 transitions, 6533 flow. Second operand 7 states and 169 transitions. [2024-06-28 01:42:33,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 449 transitions, 7551 flow [2024-06-28 01:42:34,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 449 transitions, 7128 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:34,924 INFO L231 Difference]: Finished difference. Result has 244 places, 423 transitions, 6430 flow [2024-06-28 01:42:34,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6110, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6430, PETRI_PLACES=244, PETRI_TRANSITIONS=423} [2024-06-28 01:42:34,925 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 192 predicate places. [2024-06-28 01:42:34,925 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 423 transitions, 6430 flow [2024-06-28 01:42:34,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:34,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:34,925 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 01:42:34,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:42:34,926 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:34,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:34,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1056665433, now seen corresponding path program 3 times [2024-06-28 01:42:34,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:34,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53992576] [2024-06-28 01:42:34,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:34,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:35,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:35,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53992576] [2024-06-28 01:42:35,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53992576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:35,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:35,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:35,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310527234] [2024-06-28 01:42:35,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:35,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:35,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:35,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:35,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:35,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:35,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 423 transitions, 6430 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:35,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:35,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:35,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:37,832 INFO L124 PetriNetUnfolderBase]: 6161/10612 cut-off events. [2024-06-28 01:42:37,832 INFO L125 PetriNetUnfolderBase]: For 260691/260691 co-relation queries the response was YES. [2024-06-28 01:42:37,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69778 conditions, 10612 events. 6161/10612 cut-off events. For 260691/260691 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 77474 event pairs, 2265 based on Foata normal form. 1/10263 useless extension candidates. Maximal degree in co-relation 69667. Up to 8732 conditions per place. [2024-06-28 01:42:37,987 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 425 selfloop transitions, 19 changer transitions 0/454 dead transitions. [2024-06-28 01:42:37,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 454 transitions, 7550 flow [2024-06-28 01:42:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-28 01:42:37,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2024-06-28 01:42:37,988 INFO L175 Difference]: Start difference. First operand has 244 places, 423 transitions, 6430 flow. Second operand 8 states and 178 transitions. [2024-06-28 01:42:37,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 454 transitions, 7550 flow [2024-06-28 01:42:38,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 454 transitions, 7228 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:38,870 INFO L231 Difference]: Finished difference. Result has 246 places, 426 transitions, 6246 flow [2024-06-28 01:42:38,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6108, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6246, PETRI_PLACES=246, PETRI_TRANSITIONS=426} [2024-06-28 01:42:38,871 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 194 predicate places. [2024-06-28 01:42:38,871 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 426 transitions, 6246 flow [2024-06-28 01:42:38,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:38,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:38,871 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 01:42:38,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:42:38,872 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:38,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash 90754189, now seen corresponding path program 8 times [2024-06-28 01:42:38,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:38,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81192359] [2024-06-28 01:42:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:38,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:39,544 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 01:42:39,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:39,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81192359] [2024-06-28 01:42:39,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81192359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:39,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:39,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:39,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47427503] [2024-06-28 01:42:39,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:39,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:39,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:39,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:39,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:39,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 426 transitions, 6246 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:39,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:39,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:39,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:41,517 INFO L124 PetriNetUnfolderBase]: 6296/10824 cut-off events. [2024-06-28 01:42:41,517 INFO L125 PetriNetUnfolderBase]: For 271065/271071 co-relation queries the response was YES. [2024-06-28 01:42:41,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70927 conditions, 10824 events. 6296/10824 cut-off events. For 271065/271071 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 79092 event pairs, 2244 based on Foata normal form. 9/10481 useless extension candidates. Maximal degree in co-relation 70815. Up to 8693 conditions per place. [2024-06-28 01:42:41,688 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 421 selfloop transitions, 36 changer transitions 0/467 dead transitions. [2024-06-28 01:42:41,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 467 transitions, 7618 flow [2024-06-28 01:42:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-28 01:42:41,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135869565217391 [2024-06-28 01:42:41,690 INFO L175 Difference]: Start difference. First operand has 246 places, 426 transitions, 6246 flow. Second operand 8 states and 189 transitions. [2024-06-28 01:42:41,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 467 transitions, 7618 flow [2024-06-28 01:42:42,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 467 transitions, 7502 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:42,525 INFO L231 Difference]: Finished difference. Result has 249 places, 434 transitions, 6422 flow [2024-06-28 01:42:42,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6130, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6422, PETRI_PLACES=249, PETRI_TRANSITIONS=434} [2024-06-28 01:42:42,525 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 197 predicate places. [2024-06-28 01:42:42,526 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 434 transitions, 6422 flow [2024-06-28 01:42:42,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:42,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:42,526 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 01:42:42,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:42:42,526 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:42,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:42,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1042843339, now seen corresponding path program 9 times [2024-06-28 01:42:42,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:42,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097737733] [2024-06-28 01:42:42,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:42,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:43,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:43,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097737733] [2024-06-28 01:42:43,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097737733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:43,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:43,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:43,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644643797] [2024-06-28 01:42:43,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:43,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:43,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:43,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:43,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:43,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 434 transitions, 6422 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:43,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:43,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:43,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:45,266 INFO L124 PetriNetUnfolderBase]: 6442/10950 cut-off events. [2024-06-28 01:42:45,266 INFO L125 PetriNetUnfolderBase]: For 295127/295133 co-relation queries the response was YES. [2024-06-28 01:42:45,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74228 conditions, 10950 events. 6442/10950 cut-off events. For 295127/295133 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 78994 event pairs, 1498 based on Foata normal form. 9/10622 useless extension candidates. Maximal degree in co-relation 74114. Up to 6625 conditions per place. [2024-06-28 01:42:45,427 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 280 selfloop transitions, 191 changer transitions 0/481 dead transitions. [2024-06-28 01:42:45,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 481 transitions, 8136 flow [2024-06-28 01:42:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:42:45,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-06-28 01:42:45,428 INFO L175 Difference]: Start difference. First operand has 249 places, 434 transitions, 6422 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:42:45,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 481 transitions, 8136 flow [2024-06-28 01:42:46,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 481 transitions, 7697 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:46,320 INFO L231 Difference]: Finished difference. Result has 253 places, 446 transitions, 6732 flow [2024-06-28 01:42:46,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=5983, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6732, PETRI_PLACES=253, PETRI_TRANSITIONS=446} [2024-06-28 01:42:46,321 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 201 predicate places. [2024-06-28 01:42:46,321 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 446 transitions, 6732 flow [2024-06-28 01:42:46,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:46,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:46,321 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 01:42:46,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:42:46,321 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:46,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:46,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1160052631, now seen corresponding path program 10 times [2024-06-28 01:42:46,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:46,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138691465] [2024-06-28 01:42:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:46,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:46,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:46,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138691465] [2024-06-28 01:42:46,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138691465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:46,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:46,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:46,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212280861] [2024-06-28 01:42:46,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:46,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:46,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:46,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:46,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:47,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:47,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 446 transitions, 6732 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:47,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:47,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:47,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:49,111 INFO L124 PetriNetUnfolderBase]: 6437/10952 cut-off events. [2024-06-28 01:42:49,111 INFO L125 PetriNetUnfolderBase]: For 305137/305143 co-relation queries the response was YES. [2024-06-28 01:42:49,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74406 conditions, 10952 events. 6437/10952 cut-off events. For 305137/305143 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 79032 event pairs, 1490 based on Foata normal form. 9/10627 useless extension candidates. Maximal degree in co-relation 74291. Up to 6623 conditions per place. [2024-06-28 01:42:49,243 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 285 selfloop transitions, 186 changer transitions 0/481 dead transitions. [2024-06-28 01:42:49,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 481 transitions, 8132 flow [2024-06-28 01:42:49,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:49,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:49,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-28 01:42:49,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2024-06-28 01:42:49,245 INFO L175 Difference]: Start difference. First operand has 253 places, 446 transitions, 6732 flow. Second operand 8 states and 198 transitions. [2024-06-28 01:42:49,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 481 transitions, 8132 flow [2024-06-28 01:42:50,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 481 transitions, 7728 flow, removed 114 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:50,236 INFO L231 Difference]: Finished difference. Result has 258 places, 446 transitions, 6708 flow [2024-06-28 01:42:50,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6328, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6708, PETRI_PLACES=258, PETRI_TRANSITIONS=446} [2024-06-28 01:42:50,236 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 206 predicate places. [2024-06-28 01:42:50,237 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 446 transitions, 6708 flow [2024-06-28 01:42:50,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:50,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:50,237 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 01:42:50,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:42:50,237 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:50,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:50,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1042855863, now seen corresponding path program 4 times [2024-06-28 01:42:50,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:50,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914892843] [2024-06-28 01:42:50,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:50,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:50,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:50,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914892843] [2024-06-28 01:42:50,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914892843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:50,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:50,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:50,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992323486] [2024-06-28 01:42:50,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:50,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:50,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:51,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:51,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 446 transitions, 6708 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:51,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:51,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:51,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:53,091 INFO L124 PetriNetUnfolderBase]: 6459/10985 cut-off events. [2024-06-28 01:42:53,092 INFO L125 PetriNetUnfolderBase]: For 297025/297043 co-relation queries the response was YES. [2024-06-28 01:42:53,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74535 conditions, 10985 events. 6459/10985 cut-off events. For 297025/297043 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 79356 event pairs, 1970 based on Foata normal form. 19/10678 useless extension candidates. Maximal degree in co-relation 74418. Up to 8996 conditions per place. [2024-06-28 01:42:53,253 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 412 selfloop transitions, 63 changer transitions 0/485 dead transitions. [2024-06-28 01:42:53,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 485 transitions, 8144 flow [2024-06-28 01:42:53,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:53,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 01:42:53,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-28 01:42:53,255 INFO L175 Difference]: Start difference. First operand has 258 places, 446 transitions, 6708 flow. Second operand 8 states and 183 transitions. [2024-06-28 01:42:53,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 485 transitions, 8144 flow [2024-06-28 01:42:54,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 485 transitions, 7695 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 01:42:54,303 INFO L231 Difference]: Finished difference. Result has 258 places, 456 transitions, 6756 flow [2024-06-28 01:42:54,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6259, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6756, PETRI_PLACES=258, PETRI_TRANSITIONS=456} [2024-06-28 01:42:54,303 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 206 predicate places. [2024-06-28 01:42:54,304 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 456 transitions, 6756 flow [2024-06-28 01:42:54,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:54,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:54,304 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 01:42:54,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:42:54,304 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:54,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:54,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1057140663, now seen corresponding path program 5 times [2024-06-28 01:42:54,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:54,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573288726] [2024-06-28 01:42:54,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:54,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:55,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:55,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573288726] [2024-06-28 01:42:55,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573288726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:55,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:55,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:55,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270259631] [2024-06-28 01:42:55,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:55,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:55,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:55,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:55,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:55,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:55,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 456 transitions, 6756 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:55,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:55,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:55,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:57,218 INFO L124 PetriNetUnfolderBase]: 6461/11048 cut-off events. [2024-06-28 01:42:57,218 INFO L125 PetriNetUnfolderBase]: For 303650/303650 co-relation queries the response was YES. [2024-06-28 01:42:57,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73377 conditions, 11048 events. 6461/11048 cut-off events. For 303650/303650 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 80422 event pairs, 2312 based on Foata normal form. 1/10706 useless extension candidates. Maximal degree in co-relation 73261. Up to 9102 conditions per place. [2024-06-28 01:42:57,375 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 449 selfloop transitions, 39 changer transitions 0/498 dead transitions. [2024-06-28 01:42:57,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 498 transitions, 8208 flow [2024-06-28 01:42:57,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:57,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:57,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-28 01:42:57,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2024-06-28 01:42:57,377 INFO L175 Difference]: Start difference. First operand has 258 places, 456 transitions, 6756 flow. Second operand 9 states and 201 transitions. [2024-06-28 01:42:57,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 498 transitions, 8208 flow [2024-06-28 01:42:58,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 498 transitions, 7771 flow, removed 182 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:58,357 INFO L231 Difference]: Finished difference. Result has 263 places, 464 transitions, 6723 flow [2024-06-28 01:42:58,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6391, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6723, PETRI_PLACES=263, PETRI_TRANSITIONS=464} [2024-06-28 01:42:58,358 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 211 predicate places. [2024-06-28 01:42:58,358 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 464 transitions, 6723 flow [2024-06-28 01:42:58,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:58,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:58,358 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 01:42:58,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:42:58,359 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:42:58,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:58,359 INFO L85 PathProgramCache]: Analyzing trace with hash -176133449, now seen corresponding path program 1 times [2024-06-28 01:42:58,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:58,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259739612] [2024-06-28 01:42:58,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:58,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:59,341 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 01:42:59,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:59,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259739612] [2024-06-28 01:42:59,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259739612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:59,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:59,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:59,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249055906] [2024-06-28 01:42:59,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:59,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:59,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:59,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:59,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:59,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:42:59,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 464 transitions, 6723 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:59,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:59,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:42:59,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:01,392 INFO L124 PetriNetUnfolderBase]: 6495/10872 cut-off events. [2024-06-28 01:43:01,393 INFO L125 PetriNetUnfolderBase]: For 305938/305938 co-relation queries the response was YES. [2024-06-28 01:43:01,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73356 conditions, 10872 events. 6495/10872 cut-off events. For 305938/305938 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 78164 event pairs, 2344 based on Foata normal form. 2/10588 useless extension candidates. Maximal degree in co-relation 73239. Up to 9145 conditions per place. [2024-06-28 01:43:01,557 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 468 selfloop transitions, 21 changer transitions 0/499 dead transitions. [2024-06-28 01:43:01,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 499 transitions, 7921 flow [2024-06-28 01:43:01,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:01,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:01,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 01:43:01,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49728260869565216 [2024-06-28 01:43:01,559 INFO L175 Difference]: Start difference. First operand has 263 places, 464 transitions, 6723 flow. Second operand 8 states and 183 transitions. [2024-06-28 01:43:01,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 499 transitions, 7921 flow [2024-06-28 01:43:02,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 499 transitions, 7705 flow, removed 95 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:02,597 INFO L231 Difference]: Finished difference. Result has 267 places, 468 transitions, 6626 flow [2024-06-28 01:43:02,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6507, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6626, PETRI_PLACES=267, PETRI_TRANSITIONS=468} [2024-06-28 01:43:02,598 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 215 predicate places. [2024-06-28 01:43:02,598 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 468 transitions, 6626 flow [2024-06-28 01:43:02,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:02,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:02,598 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 01:43:02,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:43:02,599 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:02,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:02,599 INFO L85 PathProgramCache]: Analyzing trace with hash 173613471, now seen corresponding path program 2 times [2024-06-28 01:43:02,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:02,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969431352] [2024-06-28 01:43:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:02,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:03,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:03,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969431352] [2024-06-28 01:43:03,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969431352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:03,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:03,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:03,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736407687] [2024-06-28 01:43:03,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:03,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:03,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:03,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:03,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:03,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:43:03,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 468 transitions, 6626 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:03,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:03,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:43:03,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:05,736 INFO L124 PetriNetUnfolderBase]: 6563/11263 cut-off events. [2024-06-28 01:43:05,737 INFO L125 PetriNetUnfolderBase]: For 316788/316794 co-relation queries the response was YES. [2024-06-28 01:43:05,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75240 conditions, 11263 events. 6563/11263 cut-off events. For 316788/316794 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 82697 event pairs, 2301 based on Foata normal form. 8/10907 useless extension candidates. Maximal degree in co-relation 75121. Up to 9145 conditions per place. [2024-06-28 01:43:05,941 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 463 selfloop transitions, 33 changer transitions 0/506 dead transitions. [2024-06-28 01:43:05,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 506 transitions, 7882 flow [2024-06-28 01:43:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:05,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:05,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:43:05,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054347826086957 [2024-06-28 01:43:05,942 INFO L175 Difference]: Start difference. First operand has 267 places, 468 transitions, 6626 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:43:05,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 506 transitions, 7882 flow [2024-06-28 01:43:07,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 506 transitions, 7753 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:07,021 INFO L231 Difference]: Finished difference. Result has 269 places, 475 transitions, 6668 flow [2024-06-28 01:43:07,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6497, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6668, PETRI_PLACES=269, PETRI_TRANSITIONS=475} [2024-06-28 01:43:07,021 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 217 predicate places. [2024-06-28 01:43:07,021 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 475 transitions, 6668 flow [2024-06-28 01:43:07,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:07,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:07,022 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 01:43:07,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:43:07,022 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:07,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:07,023 INFO L85 PathProgramCache]: Analyzing trace with hash 91235805, now seen corresponding path program 3 times [2024-06-28 01:43:07,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:07,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328108477] [2024-06-28 01:43:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:07,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:07,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:07,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328108477] [2024-06-28 01:43:07,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328108477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:07,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:07,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:07,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000870001] [2024-06-28 01:43:07,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:07,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:07,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:07,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:07,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:08,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:43:08,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 475 transitions, 6668 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:08,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:08,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:43:08,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:10,464 INFO L124 PetriNetUnfolderBase]: 6587/11292 cut-off events. [2024-06-28 01:43:10,464 INFO L125 PetriNetUnfolderBase]: For 324843/324849 co-relation queries the response was YES. [2024-06-28 01:43:10,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76556 conditions, 11292 events. 6587/11292 cut-off events. For 324843/324849 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 82920 event pairs, 2291 based on Foata normal form. 8/10935 useless extension candidates. Maximal degree in co-relation 76436. Up to 9117 conditions per place. [2024-06-28 01:43:10,612 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 463 selfloop transitions, 45 changer transitions 0/518 dead transitions. [2024-06-28 01:43:10,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 518 transitions, 7994 flow [2024-06-28 01:43:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-06-28 01:43:10,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024154589371981 [2024-06-28 01:43:10,613 INFO L175 Difference]: Start difference. First operand has 269 places, 475 transitions, 6668 flow. Second operand 9 states and 208 transitions. [2024-06-28 01:43:10,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 518 transitions, 7994 flow [2024-06-28 01:43:11,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 518 transitions, 7875 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:11,632 INFO L231 Difference]: Finished difference. Result has 274 places, 482 transitions, 6777 flow [2024-06-28 01:43:11,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6549, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6777, PETRI_PLACES=274, PETRI_TRANSITIONS=482} [2024-06-28 01:43:11,633 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 222 predicate places. [2024-06-28 01:43:11,633 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 482 transitions, 6777 flow [2024-06-28 01:43:11,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:11,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:11,634 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 01:43:11,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:43:11,634 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:11,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:11,634 INFO L85 PathProgramCache]: Analyzing trace with hash 282624843, now seen corresponding path program 1 times [2024-06-28 01:43:11,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:11,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283972368] [2024-06-28 01:43:11,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:11,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:12,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:12,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283972368] [2024-06-28 01:43:12,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283972368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:12,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:12,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:12,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035356908] [2024-06-28 01:43:12,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:12,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:12,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:12,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:12,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:12,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:43:12,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 482 transitions, 6777 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:12,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:12,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:43:12,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:14,716 INFO L124 PetriNetUnfolderBase]: 6765/11274 cut-off events. [2024-06-28 01:43:14,716 INFO L125 PetriNetUnfolderBase]: For 337432/337450 co-relation queries the response was YES. [2024-06-28 01:43:14,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79132 conditions, 11274 events. 6765/11274 cut-off events. For 337432/337450 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 80788 event pairs, 1904 based on Foata normal form. 20/11009 useless extension candidates. Maximal degree in co-relation 79010. Up to 9145 conditions per place. [2024-06-28 01:43:14,922 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 430 selfloop transitions, 103 changer transitions 0/543 dead transitions. [2024-06-28 01:43:14,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 543 transitions, 8233 flow [2024-06-28 01:43:14,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:14,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-06-28 01:43:14,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347826086956522 [2024-06-28 01:43:14,923 INFO L175 Difference]: Start difference. First operand has 274 places, 482 transitions, 6777 flow. Second operand 10 states and 246 transitions. [2024-06-28 01:43:14,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 543 transitions, 8233 flow [2024-06-28 01:43:16,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 543 transitions, 8085 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:16,406 INFO L231 Difference]: Finished difference. Result has 280 places, 494 transitions, 7050 flow [2024-06-28 01:43:16,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6629, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7050, PETRI_PLACES=280, PETRI_TRANSITIONS=494} [2024-06-28 01:43:16,407 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 228 predicate places. [2024-06-28 01:43:16,407 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 494 transitions, 7050 flow [2024-06-28 01:43:16,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:16,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:16,407 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 01:43:16,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:43:16,407 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:16,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:16,408 INFO L85 PathProgramCache]: Analyzing trace with hash 710855725, now seen corresponding path program 2 times [2024-06-28 01:43:16,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:16,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343024031] [2024-06-28 01:43:16,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:16,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:17,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:17,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:17,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343024031] [2024-06-28 01:43:17,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343024031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:17,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:17,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:17,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61166404] [2024-06-28 01:43:17,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:17,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:17,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:17,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:17,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:17,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:43:17,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 494 transitions, 7050 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:17,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:17,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:43:17,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:19,498 INFO L124 PetriNetUnfolderBase]: 6893/11506 cut-off events. [2024-06-28 01:43:19,498 INFO L125 PetriNetUnfolderBase]: For 375468/375486 co-relation queries the response was YES. [2024-06-28 01:43:19,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83631 conditions, 11506 events. 6893/11506 cut-off events. For 375468/375486 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 82652 event pairs, 1913 based on Foata normal form. 28/11239 useless extension candidates. Maximal degree in co-relation 83506. Up to 9201 conditions per place. [2024-06-28 01:43:19,688 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 428 selfloop transitions, 103 changer transitions 0/541 dead transitions. [2024-06-28 01:43:19,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 541 transitions, 8420 flow [2024-06-28 01:43:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:19,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-28 01:43:19,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5410628019323671 [2024-06-28 01:43:19,689 INFO L175 Difference]: Start difference. First operand has 280 places, 494 transitions, 7050 flow. Second operand 9 states and 224 transitions. [2024-06-28 01:43:19,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 541 transitions, 8420 flow [2024-06-28 01:43:21,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 541 transitions, 8180 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:21,038 INFO L231 Difference]: Finished difference. Result has 284 places, 496 transitions, 7106 flow [2024-06-28 01:43:21,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6810, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7106, PETRI_PLACES=284, PETRI_TRANSITIONS=496} [2024-06-28 01:43:21,038 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 232 predicate places. [2024-06-28 01:43:21,039 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 496 transitions, 7106 flow [2024-06-28 01:43:21,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:21,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:21,039 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 01:43:21,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:43:21,039 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:21,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:21,040 INFO L85 PathProgramCache]: Analyzing trace with hash 976879435, now seen corresponding path program 3 times [2024-06-28 01:43:21,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:21,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460616257] [2024-06-28 01:43:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:21,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:21,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:21,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460616257] [2024-06-28 01:43:21,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460616257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:21,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:21,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:21,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935028035] [2024-06-28 01:43:21,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:21,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:21,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:21,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:21,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:43:21,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 496 transitions, 7106 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:21,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:21,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:43:21,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:24,163 INFO L124 PetriNetUnfolderBase]: 7049/11757 cut-off events. [2024-06-28 01:43:24,164 INFO L125 PetriNetUnfolderBase]: For 391013/391031 co-relation queries the response was YES. [2024-06-28 01:43:24,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85922 conditions, 11757 events. 7049/11757 cut-off events. For 391013/391031 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 84647 event pairs, 1992 based on Foata normal form. 30/11490 useless extension candidates. Maximal degree in co-relation 85795. Up to 9439 conditions per place. [2024-06-28 01:43:24,400 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 427 selfloop transitions, 106 changer transitions 0/543 dead transitions. [2024-06-28 01:43:24,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 543 transitions, 8524 flow [2024-06-28 01:43:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:24,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:43:24,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538647342995169 [2024-06-28 01:43:24,402 INFO L175 Difference]: Start difference. First operand has 284 places, 496 transitions, 7106 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:43:24,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 543 transitions, 8524 flow [2024-06-28 01:43:25,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 543 transitions, 8276 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:25,875 INFO L231 Difference]: Finished difference. Result has 287 places, 498 transitions, 7167 flow [2024-06-28 01:43:25,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6862, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7167, PETRI_PLACES=287, PETRI_TRANSITIONS=498} [2024-06-28 01:43:25,875 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 235 predicate places. [2024-06-28 01:43:25,876 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 498 transitions, 7167 flow [2024-06-28 01:43:25,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:25,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:25,876 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 01:43:25,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:43:25,876 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:25,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:25,877 INFO L85 PathProgramCache]: Analyzing trace with hash -624879957, now seen corresponding path program 4 times [2024-06-28 01:43:25,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:25,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234821547] [2024-06-28 01:43:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:25,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:26,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:26,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234821547] [2024-06-28 01:43:26,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234821547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:26,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:26,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:26,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939845795] [2024-06-28 01:43:26,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:26,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:26,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:26,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:26,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:43:26,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 498 transitions, 7167 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:26,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:26,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:43:26,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:29,060 INFO L124 PetriNetUnfolderBase]: 7230/12067 cut-off events. [2024-06-28 01:43:29,060 INFO L125 PetriNetUnfolderBase]: For 394083/394101 co-relation queries the response was YES. [2024-06-28 01:43:29,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87481 conditions, 12067 events. 7230/12067 cut-off events. For 394083/394101 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 87115 event pairs, 1764 based on Foata normal form. 28/11784 useless extension candidates. Maximal degree in co-relation 87353. Up to 9572 conditions per place. [2024-06-28 01:43:29,220 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 435 selfloop transitions, 111 changer transitions 0/556 dead transitions. [2024-06-28 01:43:29,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 556 transitions, 8707 flow [2024-06-28 01:43:29,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:43:29,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538647342995169 [2024-06-28 01:43:29,222 INFO L175 Difference]: Start difference. First operand has 287 places, 498 transitions, 7167 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:43:29,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 556 transitions, 8707 flow [2024-06-28 01:43:30,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 556 transitions, 8440 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:30,429 INFO L231 Difference]: Finished difference. Result has 291 places, 510 transitions, 7394 flow [2024-06-28 01:43:30,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=6900, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7394, PETRI_PLACES=291, PETRI_TRANSITIONS=510} [2024-06-28 01:43:30,431 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 239 predicate places. [2024-06-28 01:43:30,431 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 510 transitions, 7394 flow [2024-06-28 01:43:30,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:30,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:30,431 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 01:43:30,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:43:30,432 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:30,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:30,432 INFO L85 PathProgramCache]: Analyzing trace with hash 976891339, now seen corresponding path program 1 times [2024-06-28 01:43:30,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:30,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662091304] [2024-06-28 01:43:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:30,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:31,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:31,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662091304] [2024-06-28 01:43:31,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662091304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:31,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:31,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:31,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478345325] [2024-06-28 01:43:31,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:31,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:31,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:31,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:31,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:31,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:43:31,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 510 transitions, 7394 flow. Second operand has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:31,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:31,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:43:31,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:33,971 INFO L124 PetriNetUnfolderBase]: 7294/12214 cut-off events. [2024-06-28 01:43:33,971 INFO L125 PetriNetUnfolderBase]: For 410060/410078 co-relation queries the response was YES. [2024-06-28 01:43:34,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91097 conditions, 12214 events. 7294/12214 cut-off events. For 410060/410078 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 88711 event pairs, 2061 based on Foata normal form. 20/11912 useless extension candidates. Maximal degree in co-relation 90966. Up to 9849 conditions per place. [2024-06-28 01:43:34,139 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 447 selfloop transitions, 131 changer transitions 0/588 dead transitions. [2024-06-28 01:43:34,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 588 transitions, 9490 flow [2024-06-28 01:43:34,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-28 01:43:34,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-06-28 01:43:34,141 INFO L175 Difference]: Start difference. First operand has 291 places, 510 transitions, 7394 flow. Second operand 10 states and 245 transitions. [2024-06-28 01:43:34,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 588 transitions, 9490 flow [2024-06-28 01:43:35,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 588 transitions, 9239 flow, removed 72 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:35,455 INFO L231 Difference]: Finished difference. Result has 299 places, 540 transitions, 8202 flow [2024-06-28 01:43:35,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7143, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8202, PETRI_PLACES=299, PETRI_TRANSITIONS=540} [2024-06-28 01:43:35,456 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 247 predicate places. [2024-06-28 01:43:35,456 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 540 transitions, 8202 flow [2024-06-28 01:43:35,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:35,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:35,456 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 01:43:35,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:43:35,456 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:35,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:35,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1001404473, now seen corresponding path program 5 times [2024-06-28 01:43:35,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:35,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938096699] [2024-06-28 01:43:35,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:35,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:36,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:36,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938096699] [2024-06-28 01:43:36,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938096699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:36,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:36,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:36,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404818745] [2024-06-28 01:43:36,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:36,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:36,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:36,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:36,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:36,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:43:36,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 540 transitions, 8202 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:36,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:36,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:43:36,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:38,799 INFO L124 PetriNetUnfolderBase]: 7931/13238 cut-off events. [2024-06-28 01:43:38,799 INFO L125 PetriNetUnfolderBase]: For 454073/454091 co-relation queries the response was YES. [2024-06-28 01:43:39,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99060 conditions, 13238 events. 7931/13238 cut-off events. For 454073/454091 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 96673 event pairs, 2084 based on Foata normal form. 28/12921 useless extension candidates. Maximal degree in co-relation 98925. Up to 10409 conditions per place. [2024-06-28 01:43:39,304 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 487 selfloop transitions, 113 changer transitions 0/610 dead transitions. [2024-06-28 01:43:39,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 610 transitions, 9991 flow [2024-06-28 01:43:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:39,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-06-28 01:43:39,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538647342995169 [2024-06-28 01:43:39,305 INFO L175 Difference]: Start difference. First operand has 299 places, 540 transitions, 8202 flow. Second operand 9 states and 223 transitions. [2024-06-28 01:43:39,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 610 transitions, 9991 flow [2024-06-28 01:43:41,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 610 transitions, 9621 flow, removed 149 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:41,034 INFO L231 Difference]: Finished difference. Result has 306 places, 564 transitions, 8467 flow [2024-06-28 01:43:41,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=7838, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8467, PETRI_PLACES=306, PETRI_TRANSITIONS=564} [2024-06-28 01:43:41,035 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 254 predicate places. [2024-06-28 01:43:41,035 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 564 transitions, 8467 flow [2024-06-28 01:43:41,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:41,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:41,035 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 01:43:41,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:43:41,036 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:41,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash -992803833, now seen corresponding path program 6 times [2024-06-28 01:43:41,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:41,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815750883] [2024-06-28 01:43:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:41,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:41,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:41,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815750883] [2024-06-28 01:43:41,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815750883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:41,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:41,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:41,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162102481] [2024-06-28 01:43:41,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:41,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:41,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:41,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:41,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:41,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:43:41,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 564 transitions, 8467 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:41,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:41,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:43:41,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:44,792 INFO L124 PetriNetUnfolderBase]: 8243/13753 cut-off events. [2024-06-28 01:43:44,792 INFO L125 PetriNetUnfolderBase]: For 470749/470767 co-relation queries the response was YES. [2024-06-28 01:43:45,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101906 conditions, 13753 events. 8243/13753 cut-off events. For 470749/470767 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 100979 event pairs, 2264 based on Foata normal form. 30/13433 useless extension candidates. Maximal degree in co-relation 101769. Up to 11003 conditions per place. [2024-06-28 01:43:45,077 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 491 selfloop transitions, 111 changer transitions 0/612 dead transitions. [2024-06-28 01:43:45,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 612 transitions, 10078 flow [2024-06-28 01:43:45,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 01:43:45,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-28 01:43:45,079 INFO L175 Difference]: Start difference. First operand has 306 places, 564 transitions, 8467 flow. Second operand 9 states and 222 transitions. [2024-06-28 01:43:45,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 612 transitions, 10078 flow [2024-06-28 01:43:46,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 612 transitions, 9867 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:46,935 INFO L231 Difference]: Finished difference. Result has 310 places, 568 transitions, 8614 flow [2024-06-28 01:43:46,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8256, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8614, PETRI_PLACES=310, PETRI_TRANSITIONS=568} [2024-06-28 01:43:46,935 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 258 predicate places. [2024-06-28 01:43:46,936 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 568 transitions, 8614 flow [2024-06-28 01:43:46,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:46,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:46,936 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 01:43:46,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:43:46,936 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:46,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:46,937 INFO L85 PathProgramCache]: Analyzing trace with hash -705022773, now seen corresponding path program 7 times [2024-06-28 01:43:46,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:46,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964709880] [2024-06-28 01:43:46,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:46,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:47,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:47,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964709880] [2024-06-28 01:43:47,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964709880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:47,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:47,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:47,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974865504] [2024-06-28 01:43:47,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:47,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:47,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:47,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:47,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:47,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:43:47,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 568 transitions, 8614 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:47,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:47,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:43:47,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:51,640 INFO L124 PetriNetUnfolderBase]: 8399/14097 cut-off events. [2024-06-28 01:43:51,641 INFO L125 PetriNetUnfolderBase]: For 492148/492154 co-relation queries the response was YES. [2024-06-28 01:43:51,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104280 conditions, 14097 events. 8399/14097 cut-off events. For 492148/492154 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 104655 event pairs, 2239 based on Foata normal form. 18/13742 useless extension candidates. Maximal degree in co-relation 104142. Up to 10887 conditions per place. [2024-06-28 01:43:51,854 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 454 selfloop transitions, 150 changer transitions 0/614 dead transitions. [2024-06-28 01:43:51,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 614 transitions, 10247 flow [2024-06-28 01:43:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:43:51,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533816425120773 [2024-06-28 01:43:51,855 INFO L175 Difference]: Start difference. First operand has 310 places, 568 transitions, 8614 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:43:51,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 614 transitions, 10247 flow [2024-06-28 01:43:53,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 614 transitions, 9965 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:53,770 INFO L231 Difference]: Finished difference. Result has 312 places, 570 transitions, 8742 flow [2024-06-28 01:43:53,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8332, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8742, PETRI_PLACES=312, PETRI_TRANSITIONS=570} [2024-06-28 01:43:53,770 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 260 predicate places. [2024-06-28 01:43:53,771 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 570 transitions, 8742 flow [2024-06-28 01:43:53,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:53,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:53,771 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 01:43:53,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:43:53,771 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:43:53,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1870477501, now seen corresponding path program 1 times [2024-06-28 01:43:53,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:53,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473767480] [2024-06-28 01:43:53,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:53,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:54,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:54,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473767480] [2024-06-28 01:43:54,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473767480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:54,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:54,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:54,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887844724] [2024-06-28 01:43:54,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:54,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:54,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:54,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:54,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:43:54,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 570 transitions, 8742 flow. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:54,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:54,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:43:54,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:58,133 INFO L124 PetriNetUnfolderBase]: 8433/14158 cut-off events. [2024-06-28 01:43:58,133 INFO L125 PetriNetUnfolderBase]: For 483784/483790 co-relation queries the response was YES. [2024-06-28 01:43:58,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104876 conditions, 14158 events. 8433/14158 cut-off events. For 483784/483790 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 105285 event pairs, 2373 based on Foata normal form. 4/13770 useless extension candidates. Maximal degree in co-relation 104737. Up to 11343 conditions per place. [2024-06-28 01:43:58,350 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 495 selfloop transitions, 124 changer transitions 0/629 dead transitions. [2024-06-28 01:43:58,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 629 transitions, 10462 flow [2024-06-28 01:43:58,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:58,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-28 01:43:58,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483091787439613 [2024-06-28 01:43:58,351 INFO L175 Difference]: Start difference. First operand has 312 places, 570 transitions, 8742 flow. Second operand 9 states and 227 transitions. [2024-06-28 01:43:58,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 629 transitions, 10462 flow [2024-06-28 01:44:00,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 629 transitions, 10086 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:00,198 INFO L231 Difference]: Finished difference. Result has 315 places, 575 transitions, 8779 flow [2024-06-28 01:44:00,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8366, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8779, PETRI_PLACES=315, PETRI_TRANSITIONS=575} [2024-06-28 01:44:00,199 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 263 predicate places. [2024-06-28 01:44:00,199 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 575 transitions, 8779 flow [2024-06-28 01:44:00,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 9 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:00,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:00,201 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 01:44:00,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:44:00,201 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:00,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:00,201 INFO L85 PathProgramCache]: Analyzing trace with hash -882953504, now seen corresponding path program 1 times [2024-06-28 01:44:00,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:00,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202100076] [2024-06-28 01:44:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:00,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:00,943 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 01:44:00,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:00,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202100076] [2024-06-28 01:44:00,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202100076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:00,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:00,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509252861] [2024-06-28 01:44:00,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:00,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:00,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:01,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:44:01,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 575 transitions, 8779 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:01,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:01,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:44:01,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:04,649 INFO L124 PetriNetUnfolderBase]: 8501/14263 cut-off events. [2024-06-28 01:44:04,650 INFO L125 PetriNetUnfolderBase]: For 488519/488525 co-relation queries the response was YES. [2024-06-28 01:44:04,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105625 conditions, 14263 events. 8501/14263 cut-off events. For 488519/488525 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 106094 event pairs, 2375 based on Foata normal form. 10/13887 useless extension candidates. Maximal degree in co-relation 105484. Up to 11585 conditions per place. [2024-06-28 01:44:04,880 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 499 selfloop transitions, 108 changer transitions 0/617 dead transitions. [2024-06-28 01:44:04,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 617 transitions, 10322 flow [2024-06-28 01:44:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:04,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-28 01:44:04,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2024-06-28 01:44:04,882 INFO L175 Difference]: Start difference. First operand has 315 places, 575 transitions, 8779 flow. Second operand 9 states and 219 transitions. [2024-06-28 01:44:04,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 617 transitions, 10322 flow [2024-06-28 01:44:06,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 617 transitions, 9985 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:06,990 INFO L231 Difference]: Finished difference. Result has 318 places, 579 transitions, 8773 flow [2024-06-28 01:44:06,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8442, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8773, PETRI_PLACES=318, PETRI_TRANSITIONS=579} [2024-06-28 01:44:06,991 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 266 predicate places. [2024-06-28 01:44:06,991 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 579 transitions, 8773 flow [2024-06-28 01:44:06,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:06,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:06,991 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 01:44:06,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:44:06,992 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:06,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:06,992 INFO L85 PathProgramCache]: Analyzing trace with hash -704632514, now seen corresponding path program 2 times [2024-06-28 01:44:06,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:06,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512969899] [2024-06-28 01:44:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:06,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:07,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512969899] [2024-06-28 01:44:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512969899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:07,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:07,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:07,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861798051] [2024-06-28 01:44:07,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:07,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:07,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:07,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:07,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:07,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:44:07,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 579 transitions, 8773 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:07,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:07,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:44:07,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:11,722 INFO L124 PetriNetUnfolderBase]: 8569/14402 cut-off events. [2024-06-28 01:44:11,723 INFO L125 PetriNetUnfolderBase]: For 499768/499774 co-relation queries the response was YES. [2024-06-28 01:44:11,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106605 conditions, 14402 events. 8569/14402 cut-off events. For 499768/499774 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 107551 event pairs, 2249 based on Foata normal form. 10/14013 useless extension candidates. Maximal degree in co-relation 106463. Up to 10706 conditions per place. [2024-06-28 01:44:11,924 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 443 selfloop transitions, 172 changer transitions 0/625 dead transitions. [2024-06-28 01:44:11,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 625 transitions, 10526 flow [2024-06-28 01:44:11,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:11,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:11,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-06-28 01:44:11,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.533816425120773 [2024-06-28 01:44:11,932 INFO L175 Difference]: Start difference. First operand has 318 places, 579 transitions, 8773 flow. Second operand 9 states and 221 transitions. [2024-06-28 01:44:11,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 625 transitions, 10526 flow [2024-06-28 01:44:13,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 625 transitions, 10266 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:13,780 INFO L231 Difference]: Finished difference. Result has 320 places, 583 transitions, 8976 flow [2024-06-28 01:44:13,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8513, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8976, PETRI_PLACES=320, PETRI_TRANSITIONS=583} [2024-06-28 01:44:13,782 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 268 predicate places. [2024-06-28 01:44:13,782 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 583 transitions, 8976 flow [2024-06-28 01:44:13,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:13,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:13,782 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 01:44:13,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:44:13,783 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:13,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:13,783 INFO L85 PathProgramCache]: Analyzing trace with hash -704899424, now seen corresponding path program 3 times [2024-06-28 01:44:13,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:13,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484218756] [2024-06-28 01:44:13,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:13,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:14,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:14,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:14,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484218756] [2024-06-28 01:44:14,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484218756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:14,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:14,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:14,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879477177] [2024-06-28 01:44:14,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:14,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:14,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:14,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:14,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:14,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:44:14,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 583 transitions, 8976 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:14,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:14,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:44:14,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:18,122 INFO L124 PetriNetUnfolderBase]: 8637/14497 cut-off events. [2024-06-28 01:44:18,122 INFO L125 PetriNetUnfolderBase]: For 515382/515388 co-relation queries the response was YES. [2024-06-28 01:44:18,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108370 conditions, 14497 events. 8637/14497 cut-off events. For 515382/515388 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 108061 event pairs, 2321 based on Foata normal form. 10/14116 useless extension candidates. Maximal degree in co-relation 108227. Up to 10754 conditions per place. [2024-06-28 01:44:18,360 INFO L140 encePairwiseOnDemand]: 30/46 looper letters, 454 selfloop transitions, 165 changer transitions 0/629 dead transitions. [2024-06-28 01:44:18,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 629 transitions, 10747 flow [2024-06-28 01:44:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:18,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-06-28 01:44:18,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-06-28 01:44:18,361 INFO L175 Difference]: Start difference. First operand has 320 places, 583 transitions, 8976 flow. Second operand 9 states and 222 transitions. [2024-06-28 01:44:18,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 629 transitions, 10747 flow [2024-06-28 01:44:20,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 629 transitions, 10404 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:20,636 INFO L231 Difference]: Finished difference. Result has 323 places, 587 transitions, 9086 flow [2024-06-28 01:44:20,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8636, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9086, PETRI_PLACES=323, PETRI_TRANSITIONS=587} [2024-06-28 01:44:20,637 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 271 predicate places. [2024-06-28 01:44:20,637 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 587 transitions, 9086 flow [2024-06-28 01:44:20,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:20,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:20,637 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 01:44:20,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:44:20,637 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:44:20,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:20,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1340950823, now seen corresponding path program 2 times [2024-06-28 01:44:20,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:20,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068232543] [2024-06-28 01:44:20,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:20,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:21,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:21,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068232543] [2024-06-28 01:44:21,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068232543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:21,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:21,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:21,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589455790] [2024-06-28 01:44:21,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:21,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:21,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:21,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:21,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:21,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-06-28 01:44:21,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 587 transitions, 9086 flow. Second operand has 11 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:21,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:21,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-06-28 01:44:21,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:25,566 INFO L124 PetriNetUnfolderBase]: 8755/14671 cut-off events. [2024-06-28 01:44:25,566 INFO L125 PetriNetUnfolderBase]: For 526106/526124 co-relation queries the response was YES. [2024-06-28 01:44:25,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109799 conditions, 14671 events. 8755/14671 cut-off events. For 526106/526124 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 109412 event pairs, 2431 based on Foata normal form. 20/14289 useless extension candidates. Maximal degree in co-relation 109655. Up to 11907 conditions per place. [2024-06-28 01:44:25,868 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 516 selfloop transitions, 147 changer transitions 0/673 dead transitions. [2024-06-28 01:44:25,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 673 transitions, 11459 flow [2024-06-28 01:44:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2024-06-28 01:44:25,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304347826086957 [2024-06-28 01:44:25,869 INFO L175 Difference]: Start difference. First operand has 323 places, 587 transitions, 9086 flow. Second operand 10 states and 244 transitions. [2024-06-28 01:44:25,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 673 transitions, 11459 flow